* [PATCH] [IPSEC] IPV6: Fix to add tunnel mode SA correctly.
From: Masahide NAKAMURA @ 2007-10-22 6:09 UTC (permalink / raw)
To: Herbert Xu, David Miller; +Cc: netdev, Masahide NAKAMURA
In-Reply-To: <20071017.213523.58458049.davem@davemloft.net>
Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
---
net/ipv6/ah6.c | 1 +
net/ipv6/esp6.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 67cd066..66a9139 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -483,6 +483,7 @@ static int ah6_init_state(struct xfrm_state *x)
break;
case XFRM_MODE_TUNNEL:
x->props.header_len += sizeof(struct ipv6hdr);
+ break;
default:
goto error;
}
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index b071543..72a6598 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -360,6 +360,7 @@ static int esp6_init_state(struct xfrm_state *x)
break;
case XFRM_MODE_TUNNEL:
x->props.header_len += sizeof(struct ipv6hdr);
+ break;
default:
goto error;
}
--
1.4.4.2
^ permalink raw reply related
* [RFC][PATCH 3/3][XFRM]: Add packet processing statistics option.
From: Masahide NAKAMURA @ 2007-10-22 6:11 UTC (permalink / raw)
To: Herbert Xu, David Miller; +Cc: netdev, Masahide NAKAMURA
In-Reply-To: <20071017.213523.58458049.davem@davemloft.net>
Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
---
net/xfrm/Kconfig | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index 577a4f8..6b5b50f 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -35,6 +35,16 @@ config XFRM_MIGRATE
If unsure, say N.
+config XFRM_STATISTICS
+ bool "Transformation statistics (EXPERIMENTAL)"
+ depends on XFRM && PROC_FS && EXPERIMENTAL
+ ---help---
+ This statistics is not a SNMP/MIB specification but shows
+ statistics about transformation error (or almost error) factor
+ at packet processing for developer.
+
+ If unsure, say N.
+
config NET_KEY
tristate "PF_KEY sockets"
select XFRM
--
1.4.4.2
^ permalink raw reply related
* [RFC][PATCH 0/3][XFRM]: Support packet processing error statistics.
From: Masahide NAKAMURA @ 2007-10-22 6:11 UTC (permalink / raw)
To: Herbert Xu, David Miller; +Cc: netdev, Masahide NAKAMURA
In-Reply-To: <20071017.213523.58458049.davem@davemloft.net>
This patch introduces statistics about transformation error (or almost error)
factor at packet processing for developer.
It is not a SNMP/MIB specification from IPsec/MIPv6 but a counter
designed from current transformation source code.
Comment please.
^ permalink raw reply
* [RFC][PATCH 1/3][XFRM]: Define packet processing statistics.
From: Masahide NAKAMURA @ 2007-10-22 6:11 UTC (permalink / raw)
To: Herbert Xu, David Miller; +Cc: netdev, Masahide NAKAMURA
In-Reply-To: <20071017.213523.58458049.davem@davemloft.net>
This statistics is shown as /proc/net/xfrm_stat about transformation
error (or almost error) factor at packet processing for developer.
It is not a SNMP/MIB specification but a counter designed from
current transformation source code.
- Inbound errors
XfrmInError - all errors which is not matched others
XfrmInBufferError - no buffer is left
XfrmInHdrError - header error
XfrmInNoStates - no state is found
XfrmInStateProtoError - error at transformation protocol
XfrmInStateModeError - error at transformation mode
XfrmInSeqOutOfWindow - sequence out of window
XfrmInStateExpired - state is expired
XfrmInStateMismatch - state has mismatch option
XfrmInStateInvalid - state is invalid
XfrmInTmplMismatch - no matching template for states
XfrmInNoPols - no policy is found for states
XfrmInPolBlock - policy discards
XfrmInPolError - policy error
- Outbound errors
XfrmOutError - all errors which is not matched others
XfrmOutLengthError - length error
XfrmOutBundleError - error at bundle
XfrmOutNoStates - no state is found
XfrmOutStateProtoError - error at transformation protocol
XfrmOutStateModeError - error at transformation mode
XfrmOutStateExpired - state expired
XfrmOutPolBlock - policy discards
XfrmOutPolError - policy error
Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
---
include/linux/snmp.h | 30 +++++++++++++++
include/net/snmp.h | 5 ++
include/net/xfrm.h | 17 ++++++++
net/xfrm/Makefile | 1 +
net/xfrm/xfrm_policy.c | 35 +++++++++++++++++
net/xfrm/xfrm_proc.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 184 insertions(+), 0 deletions(-)
diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index 89f0c2b..3fc89f4 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -217,4 +217,34 @@ enum
__LINUX_MIB_MAX
};
+/* xfrm mib definitions */
+enum
+{
+ XFRM_MIB_NUM = 0,
+ XFRM_MIB_INERROR, /* XfrmInError */
+ XFRM_MIB_INBUFFERERROR, /* XfrmInBufferError */
+ XFRM_MIB_INHDRERROR, /* XfrmInHdrError */
+ XFRM_MIB_INNOSTATES, /* XfrmInNoStates */
+ XFRM_MIB_INSTATEPROTOERROR, /* XfrmInStateProtoError */
+ XFRM_MIB_INSTATEMODEERROR, /* XfrmInStateModeError */
+ XFRM_MIB_INSEQOUTOFWINDOW, /* XfrmInSeqOutOfWindow */
+ XFRM_MIB_INSTATEEXPIRED, /* XfrmInStateExpired */
+ XFRM_MIB_INSTATEMISMATCH, /* XfrmInStateMismatch */
+ XFRM_MIB_INSTATEINVALID, /* XfrmInStateInvalid */
+ XFRM_MIB_INTMPLMISMATCH, /* XfrmInTmplMismatch */
+ XFRM_MIB_INNOPOLS, /* XfrmInNoPols */
+ XFRM_MIB_INPOLBLOCK, /* XfrmInPolBlock */
+ XFRM_MIB_INPOLERROR, /* XfrmInPolError */
+ XFRM_MIB_OUTERROR, /* XfrmOutError */
+ XFRM_MIB_OUTLENGTHERROR, /* XfrmOutLengthError */
+ XFRM_MIB_OUTBUNDLEERROR, /* XfrmOutBundleError */
+ XFRM_MIB_OUTNOSTATES, /* XfrmOutNoStates */
+ XFRM_MIB_OUTSTATEPROTOERROR, /* XfrmOutStateProtoError */
+ XFRM_MIB_OUTSTATEMODEERROR, /* XfrmOutStateModeError */
+ XFRM_MIB_OUTSTATEEXPIRED, /* XfrmOutStateExpired */
+ XFRM_MIB_OUTPOLBLOCK, /* XfrmOutPolBlock */
+ XFRM_MIB_OUTPOLERROR, /* XfrmOutPolError */
+ __XFRM_MIB_MAX
+};
+
#endif /* _LINUX_SNMP_H */
diff --git a/include/net/snmp.h b/include/net/snmp.h
index ea206bf..37bcf19 100644
--- a/include/net/snmp.h
+++ b/include/net/snmp.h
@@ -117,6 +117,11 @@ struct linux_mib {
unsigned long mibs[LINUX_MIB_MAX];
};
+/* Xfrm */
+#define XFRM_MIB_MAX __XFRM_MIB_MAX
+struct xfrm_mib {
+ unsigned long mibs[XFRM_MIB_MAX];
+};
/*
* FIXME: On x86 and some other CPUs the split into user and softirq parts
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 688f6f5..679d915 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -19,6 +19,9 @@
#include <net/route.h>
#include <net/ipv6.h>
#include <net/ip6_fib.h>
+#ifdef CONFIG_XFRM_STATISTICS
+#include <net/snmp.h>
+#endif
#define XFRM_PROTO_ESP 50
#define XFRM_PROTO_AH 51
@@ -34,6 +37,17 @@
#define MODULE_ALIAS_XFRM_TYPE(family, proto) \
MODULE_ALIAS("xfrm-type-" __stringify(family) "-" __stringify(proto))
+#ifdef CONFIG_XFRM_STATISTICS
+DECLARE_SNMP_STAT(struct xfrm_mib, xfrm_statistics);
+#define XFRM_INC_STATS(field) SNMP_INC_STATS(xfrm_statistics, field)
+#define XFRM_INC_STATS_BH(field) SNMP_INC_STATS_BH(xfrm_statistics, field)
+#define XFRM_INC_STATS_USER(field) SNMP_INC_STATS_USER(xfrm_statistics, field)
+#else
+#define XFRM_INC_STATS(field)
+#define XFRM_INC_STATS_BH(field)
+#define XFRM_INC_STATS_USER(field)
+#endif
+
extern struct sock *xfrm_nl;
extern u32 sysctl_xfrm_aevent_etime;
extern u32 sysctl_xfrm_aevent_rseqth;
@@ -985,6 +999,9 @@ extern void xfrm_state_init(void);
extern void xfrm4_state_init(void);
extern void xfrm6_state_init(void);
extern void xfrm6_state_fini(void);
+#ifdef CONFIG_XFRM_STATISTICS
+extern int xfrm_proc_init(void);
+#endif
extern int xfrm_state_walk(u8 proto, int (*func)(struct xfrm_state *, int, void*), void *);
extern struct xfrm_state *xfrm_state_alloc(void);
diff --git a/net/xfrm/Makefile b/net/xfrm/Makefile
index 45744a3..332cfb0 100644
--- a/net/xfrm/Makefile
+++ b/net/xfrm/Makefile
@@ -4,5 +4,6 @@
obj-$(CONFIG_XFRM) := xfrm_policy.o xfrm_state.o xfrm_hash.o \
xfrm_input.o xfrm_output.o xfrm_algo.o
+obj-$(CONFIG_XFRM_STATISTICS) += xfrm_proc.o
obj-$(CONFIG_XFRM_USER) += xfrm_user.o
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index b702bd8..e770998 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -25,11 +25,19 @@
#include <linux/cache.h>
#include <net/xfrm.h>
#include <net/ip.h>
+#ifdef CONFIG_XFRM_STATISTICS
+#include <net/snmp.h>
+#endif
#include "xfrm_hash.h"
int sysctl_xfrm_larval_drop __read_mostly;
+#ifdef CONFIG_XFRM_STATISTICS
+DEFINE_SNMP_STAT(struct xfrm_mib, xfrm_statistics) __read_mostly;
+EXPORT_SYMBOL(xfrm_statistics);
+#endif
+
DEFINE_MUTEX(xfrm_cfg_mutex);
EXPORT_SYMBOL(xfrm_cfg_mutex);
@@ -2078,6 +2086,27 @@ static struct notifier_block xfrm_dev_notifier = {
0
};
+#ifdef CONFIG_XFRM_STATISTICS
+static int __init xfrm_statistics_init(void)
+{
+ xfrm_statistics[0] = alloc_percpu(struct xfrm_mib);
+ if (!xfrm_statistics[0])
+ goto err0;
+
+ xfrm_statistics[1] = alloc_percpu(struct xfrm_mib);
+ if (!xfrm_statistics[1])
+ goto err1;
+
+ return 0;
+
+err1:
+ free_percpu(xfrm_statistics[0]);
+ xfrm_statistics[0] = NULL;
+err0:
+ return -ENOMEM;
+}
+#endif
+
static void __init xfrm_policy_init(void)
{
unsigned int hmask, sz;
@@ -2114,9 +2143,15 @@ static void __init xfrm_policy_init(void)
void __init xfrm_init(void)
{
+#ifdef CONFIG_XFRM_STATISTICS
+ xfrm_statistics_init();
+#endif
xfrm_state_init();
xfrm_policy_init();
xfrm_input_init();
+#ifdef CONFIG_XFRM_STATISTICS
+ xfrm_proc_init();
+#endif
}
#ifdef CONFIG_AUDITSYSCALL
diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c
new file mode 100644
index 0000000..7a44a12
--- /dev/null
+++ b/net/xfrm/xfrm_proc.c
@@ -0,0 +1,96 @@
+/*
+ * xfrm_proc.c
+ *
+ * Copyright (C)2006-2007 USAGI/WIDE Project
+ *
+ * Authors: Masahide NAKAMURA <nakam@linux-ipv6.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/net_namespace.h>
+#include <net/snmp.h>
+#include <net/xfrm.h>
+
+static struct snmp_mib xfrm_mib_list[] = {
+ SNMP_MIB_ITEM("XfrmInError", XFRM_MIB_INERROR),
+ SNMP_MIB_ITEM("XfrmInBufferError", XFRM_MIB_INBUFFERERROR),
+ SNMP_MIB_ITEM("XfrmInHdrError", XFRM_MIB_INHDRERROR),
+ SNMP_MIB_ITEM("XfrmInNoStates", XFRM_MIB_INNOSTATES),
+ SNMP_MIB_ITEM("XfrmInStateProtoError", XFRM_MIB_INSTATEPROTOERROR),
+ SNMP_MIB_ITEM("XfrmInStateModeError", XFRM_MIB_INSTATEMODEERROR),
+ SNMP_MIB_ITEM("XfrmInSeqOutOfWindow", XFRM_MIB_INSEQOUTOFWINDOW),
+ SNMP_MIB_ITEM("XfrmInStateExpired", XFRM_MIB_INSTATEEXPIRED),
+ SNMP_MIB_ITEM("XfrmInStateMismatch", XFRM_MIB_INSTATEMISMATCH),
+ SNMP_MIB_ITEM("XfrmInStateInvalid", XFRM_MIB_INSTATEINVALID),
+ SNMP_MIB_ITEM("XfrmInTmplMismatch", XFRM_MIB_INTMPLMISMATCH),
+ SNMP_MIB_ITEM("XfrmInNoPols", XFRM_MIB_INNOPOLS),
+ SNMP_MIB_ITEM("XfrmInPolBlock", XFRM_MIB_INPOLBLOCK),
+ SNMP_MIB_ITEM("XfrmInPolError", XFRM_MIB_INPOLERROR),
+ SNMP_MIB_ITEM("XfrmOutError", XFRM_MIB_OUTERROR),
+ SNMP_MIB_ITEM("XfrmOutLengthError", XFRM_MIB_OUTLENGTHERROR),
+ SNMP_MIB_ITEM("XfrmOutBundleError", XFRM_MIB_OUTBUNDLEERROR),
+ SNMP_MIB_ITEM("XfrmOutNoStates", XFRM_MIB_OUTNOSTATES),
+ SNMP_MIB_ITEM("XfrmOutStateProtoError", XFRM_MIB_OUTSTATEPROTOERROR),
+ SNMP_MIB_ITEM("XfrmOutStateModeError", XFRM_MIB_OUTSTATEMODEERROR),
+ SNMP_MIB_ITEM("XfrmOutStateExpired", XFRM_MIB_OUTSTATEEXPIRED),
+ SNMP_MIB_ITEM("XfrmOutPolBlock", XFRM_MIB_OUTPOLBLOCK),
+ SNMP_MIB_ITEM("XfrmOutPolError", XFRM_MIB_OUTPOLERROR),
+ SNMP_MIB_SENTINEL
+};
+
+static unsigned long
+fold_field(void *mib[], int offt)
+{
+ unsigned long res = 0;
+ int i;
+
+ for_each_possible_cpu(i) {
+ res += *(((unsigned long *)per_cpu_ptr(mib[0], i)) + offt);
+ res += *(((unsigned long *)per_cpu_ptr(mib[1], i)) + offt);
+ }
+ return res;
+}
+
+static int xfrm_statistics_seq_show(struct seq_file *seq, void *v)
+{
+ int i;
+ for (i=0; xfrm_mib_list[i].name; i++)
+ seq_printf(seq, "%-24s\t%lu\n", xfrm_mib_list[i].name,
+ fold_field((void **)xfrm_statistics,
+ xfrm_mib_list[i].entry));
+ return 0;
+}
+
+static int xfrm_statistics_seq_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, xfrm_statistics_seq_show, NULL);
+}
+
+static struct file_operations xfrm_statistics_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = xfrm_statistics_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+int __init xfrm_proc_init(void)
+{
+ int rc = 0;
+
+ if (!proc_net_fops_create(&init_net, "xfrm_stat", S_IRUGO,
+ &xfrm_statistics_seq_fops))
+ goto stat_fail;
+
+ out:
+ return rc;
+
+ stat_fail:
+ rc = -ENOMEM;
+ goto out;
+}
--
1.4.4.2
^ permalink raw reply related
* [RFC][PATCH 2/3][XFRM]: Support to increment packet processing statistics.
From: Masahide NAKAMURA @ 2007-10-22 6:11 UTC (permalink / raw)
To: Herbert Xu, David Miller; +Cc: netdev, Masahide NAKAMURA
In-Reply-To: <20071017.213523.58458049.davem@davemloft.net>
Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
---
net/ipv4/xfrm4_input.c | 48 +++++++++++++++++++++++++++---------
net/ipv4/xfrm4_output.c | 4 ++-
net/ipv6/xfrm6_input.c | 56 ++++++++++++++++++++++++++++++++----------
net/ipv6/xfrm6_output.c | 4 ++-
net/xfrm/xfrm_output.c | 19 +++++++++++---
net/xfrm/xfrm_policy.c | 61 +++++++++++++++++++++++++++++++++++++---------
6 files changed, 148 insertions(+), 44 deletions(-)
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index 5e95c8a..956e093 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -45,36 +45,52 @@ int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
unsigned int nhoff = offsetof(struct iphdr, protocol);
seq = 0;
- if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0)
+ if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0) {
+ XFRM_INC_STATS(XFRM_MIB_INHDRERROR);
goto drop;
+ }
do {
const struct iphdr *iph = ip_hdr(skb);
- if (xfrm_nr == XFRM_MAX_DEPTH)
+ if (xfrm_nr == XFRM_MAX_DEPTH) {
+ XFRM_INC_STATS(XFRM_MIB_INBUFFERERROR);
goto drop;
+ }
x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, spi,
nexthdr, AF_INET);
- if (x == NULL)
+ if (x == NULL) {
+ XFRM_INC_STATS(XFRM_MIB_INNOSTATES);
goto drop;
+ }
spin_lock(&x->lock);
- if (unlikely(x->km.state != XFRM_STATE_VALID))
+ if (unlikely(x->km.state != XFRM_STATE_VALID)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEINVALID);
goto drop_unlock;
+ }
- if ((x->encap ? x->encap->encap_type : 0) != encap_type)
+ if ((x->encap ? x->encap->encap_type : 0) != encap_type) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEMISMATCH);
goto drop_unlock;
+ }
- if (x->props.replay_window && xfrm_replay_check(x, seq))
+ if (x->props.replay_window && xfrm_replay_check(x, seq)) {
+ XFRM_INC_STATS(XFRM_MIB_INSEQOUTOFWINDOW);
goto drop_unlock;
+ }
- if (xfrm_state_check_expire(x))
+ if (xfrm_state_check_expire(x)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEEXPIRED);
goto drop_unlock;
+ }
nexthdr = x->type->input(x, skb);
- if (nexthdr <= 0)
+ if (nexthdr <= 0) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEPROTOERROR);
goto drop_unlock;
+ }
skb_network_header(skb)[nhoff] = nexthdr;
@@ -91,8 +107,10 @@ int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
xfrm_vec[xfrm_nr++] = x;
- if (x->outer_mode->input(x, skb))
+ if (x->outer_mode->input(x, skb)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEMODEERROR);
goto drop;
+ }
if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) {
decaps = 1;
@@ -100,8 +118,10 @@ int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
}
err = xfrm_parse_spi(skb, nexthdr, &spi, &seq);
- if (err < 0)
+ if (err < 0) {
+ XFRM_INC_STATS(XFRM_MIB_INHDRERROR);
goto drop;
+ }
} while (!err);
/* Allocate new secpath or COW existing one. */
@@ -109,14 +129,18 @@ int xfrm4_rcv_encap(struct sk_buff *skb, int nexthdr, __be32 spi,
if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) {
struct sec_path *sp;
sp = secpath_dup(skb->sp);
- if (!sp)
+ if (!sp) {
+ XFRM_INC_STATS(XFRM_MIB_INERROR);
goto drop;
+ }
if (skb->sp)
secpath_put(skb->sp);
skb->sp = sp;
}
- if (xfrm_nr + skb->sp->len > XFRM_MAX_DEPTH)
+ if (xfrm_nr + skb->sp->len > XFRM_MAX_DEPTH) {
+ XFRM_INC_STATS(XFRM_MIB_INBUFFERERROR);
goto drop;
+ }
memcpy(skb->sp->xvec + skb->sp->len, xfrm_vec,
xfrm_nr * sizeof(xfrm_vec[0]));
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index c4a7156..9d1d7b9 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -49,8 +49,10 @@ static inline int xfrm4_output_one(struct sk_buff *skb)
if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) {
err = xfrm4_tunnel_check_size(skb);
- if (err)
+ if (err) {
+ XFRM_INC_STATS(XFRM_MIB_OUTLENGTHERROR);
goto error_nolock;
+ }
}
err = xfrm_output(skb);
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index 5157837..4cf2206 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -29,32 +29,46 @@ int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
nhoff = IP6CB(skb)->nhoff;
seq = 0;
- if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0)
+ if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0) {
+ XFRM_INC_STATS(XFRM_MIB_INHDRERROR);
goto drop;
+ }
do {
struct ipv6hdr *iph = ipv6_hdr(skb);
- if (xfrm_nr == XFRM_MAX_DEPTH)
+ if (xfrm_nr == XFRM_MAX_DEPTH) {
+ XFRM_INC_STATS(XFRM_MIB_INBUFFERERROR);
goto drop;
+ }
x = xfrm_state_lookup((xfrm_address_t *)&iph->daddr, spi,
nexthdr, AF_INET6);
- if (x == NULL)
+ if (x == NULL) {
+ XFRM_INC_STATS(XFRM_MIB_INNOSTATES);
goto drop;
+ }
spin_lock(&x->lock);
- if (unlikely(x->km.state != XFRM_STATE_VALID))
+ if (unlikely(x->km.state != XFRM_STATE_VALID)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEINVALID);
goto drop_unlock;
+ }
- if (x->props.replay_window && xfrm_replay_check(x, seq))
+ if (x->props.replay_window && xfrm_replay_check(x, seq)) {
+ XFRM_INC_STATS(XFRM_MIB_INSEQOUTOFWINDOW);
goto drop_unlock;
+ }
- if (xfrm_state_check_expire(x))
+ if (xfrm_state_check_expire(x)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEEXPIRED);
goto drop_unlock;
+ }
nexthdr = x->type->input(x, skb);
- if (nexthdr <= 0)
+ if (nexthdr <= 0) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEPROTOERROR);
goto drop_unlock;
+ }
skb_network_header(skb)[nhoff] = nexthdr;
@@ -68,31 +82,39 @@ int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
xfrm_vec[xfrm_nr++] = x;
- if (x->outer_mode->input(x, skb))
+ if (x->outer_mode->input(x, skb)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEMODEERROR);
goto drop;
+ }
if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) {
decaps = 1;
break;
}
- if ((err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) < 0)
+ if ((err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) < 0) {
+ XFRM_INC_STATS(XFRM_MIB_INHDRERROR);
goto drop;
+ }
} while (!err);
/* Allocate new secpath or COW existing one. */
if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) {
struct sec_path *sp;
sp = secpath_dup(skb->sp);
- if (!sp)
+ if (!sp) {
+ XFRM_INC_STATS(XFRM_MIB_INERROR);
goto drop;
+ }
if (skb->sp)
secpath_put(skb->sp);
skb->sp = sp;
}
- if (xfrm_nr + skb->sp->len > XFRM_MAX_DEPTH)
+ if (xfrm_nr + skb->sp->len > XFRM_MAX_DEPTH) {
+ XFRM_INC_STATS(XFRM_MIB_INBUFFERERROR);
goto drop;
+ }
memcpy(skb->sp->xvec + skb->sp->len, xfrm_vec,
xfrm_nr * sizeof(xfrm_vec[0]));
@@ -217,22 +239,28 @@ int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
break;
}
- if (!xfrm_vec_one)
+ if (!xfrm_vec_one) {
+ XFRM_INC_STATS(XFRM_MIB_INNOSTATES);
goto drop;
+ }
/* Allocate new secpath or COW existing one. */
if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) {
struct sec_path *sp;
sp = secpath_dup(skb->sp);
- if (!sp)
+ if (!sp) {
+ XFRM_INC_STATS(XFRM_MIB_INERROR);
goto drop;
+ }
if (skb->sp)
secpath_put(skb->sp);
skb->sp = sp;
}
- if (1 + skb->sp->len > XFRM_MAX_DEPTH)
+ if (1 + skb->sp->len > XFRM_MAX_DEPTH) {
+ XFRM_INC_STATS(XFRM_MIB_INBUFFERERROR);
goto drop;
+ }
skb->sp->xvec[skb->sp->len] = xfrm_vec_one;
skb->sp->len ++;
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index 6569767..6dfc74d 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -52,8 +52,10 @@ static inline int xfrm6_output_one(struct sk_buff *skb)
if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) {
err = xfrm6_tunnel_check_size(skb);
- if (err)
+ if (err) {
+ XFRM_INC_STATS(XFRM_MIB_OUTLENGTHERROR);
goto error_nolock;
+ }
}
err = xfrm_output(skb);
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index f4bfd6c..39e40ac 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -32,9 +32,13 @@ static int xfrm_state_check_space(struct xfrm_state *x, struct sk_buff *skb)
static int xfrm_state_check(struct xfrm_state *x, struct sk_buff *skb)
{
int err = xfrm_state_check_expire(x);
- if (err < 0)
+ if (err < 0) {
+ XFRM_INC_STATS(XFRM_MIB_OUTSTATEEXPIRED);
goto err;
+ }
err = xfrm_state_check_space(x, skb);
+ if (err)
+ XFRM_INC_STATS(XFRM_MIB_OUTLENGTHERROR);
err:
return err;
}
@@ -47,8 +51,10 @@ int xfrm_output(struct sk_buff *skb)
if (skb->ip_summed == CHECKSUM_PARTIAL) {
err = skb_checksum_help(skb);
- if (err)
+ if (err) {
+ XFRM_INC_STATS(XFRM_MIB_OUTERROR);
goto error_nolock;
+ }
}
do {
@@ -64,8 +70,10 @@ int xfrm_output(struct sk_buff *skb)
}
err = x->outer_mode->output(x, skb);
- if (err)
+ if (err) {
+ XFRM_INC_STATS(XFRM_MIB_OUTSTATEMODEERROR);
goto error;
+ }
x->curlft.bytes += skb->len;
x->curlft.packets++;
@@ -73,10 +81,13 @@ int xfrm_output(struct sk_buff *skb)
spin_unlock_bh(&x->lock);
err = x->type->output(x, skb);
- if (err)
+ if (err) {
+ XFRM_INC_STATS(XFRM_MIB_OUTSTATEPROTOERROR);
goto error_nolock;
+ }
if (!(skb->dst = dst_pop(dst))) {
+ XFRM_INC_STATS(XFRM_MIB_OUTERROR);
err = -EHOSTUNREACH;
goto error_nolock;
}
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index e770998..2f6a1ec 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -1326,8 +1326,10 @@ restart:
if (sk && sk->sk_policy[XFRM_POLICY_OUT]) {
policy = xfrm_sk_policy_lookup(sk, XFRM_POLICY_OUT, fl);
- if (IS_ERR(policy))
+ if (IS_ERR(policy)) {
+ XFRM_INC_STATS(XFRM_MIB_OUTPOLERROR);
return PTR_ERR(policy);
+ }
}
if (!policy) {
@@ -1338,8 +1340,10 @@ restart:
policy = flow_cache_lookup(fl, dst_orig->ops->family,
dir, xfrm_policy_lookup);
- if (IS_ERR(policy))
+ if (IS_ERR(policy)) {
+ XFRM_INC_STATS(XFRM_MIB_OUTPOLERROR);
return PTR_ERR(policy);
+ }
}
if (!policy)
@@ -1354,6 +1358,7 @@ restart:
switch (policy->action) {
case XFRM_POLICY_BLOCK:
/* Prohibit the flow */
+ XFRM_INC_STATS(XFRM_MIB_OUTPOLBLOCK);
err = -EPERM;
goto error;
@@ -1373,6 +1378,7 @@ restart:
*/
dst = xfrm_find_bundle(fl, policy, family);
if (IS_ERR(dst)) {
+ XFRM_INC_STATS(XFRM_MIB_OUTBUNDLEERROR);
err = PTR_ERR(dst);
goto error;
}
@@ -1387,10 +1393,12 @@ restart:
XFRM_POLICY_OUT);
if (pols[1]) {
if (IS_ERR(pols[1])) {
+ XFRM_INC_STATS(XFRM_MIB_OUTPOLERROR);
err = PTR_ERR(pols[1]);
goto error;
}
if (pols[1]->action == XFRM_POLICY_BLOCK) {
+ XFRM_INC_STATS(XFRM_MIB_OUTPOLBLOCK);
err = -EPERM;
goto error;
}
@@ -1436,6 +1444,7 @@ restart:
nx = xfrm_tmpl_resolve(pols, npols, fl, xfrm, family);
if (nx == -EAGAIN && signal_pending(current)) {
+ XFRM_INC_STATS(XFRM_MIB_OUTNOSTATES);
err = -ERESTART;
goto error;
}
@@ -1446,8 +1455,10 @@ restart:
}
err = nx;
}
- if (err < 0)
+ if (err < 0) {
+ XFRM_INC_STATS(XFRM_MIB_OUTNOSTATES);
goto error;
+ }
}
if (nx == 0) {
/* Flow passes not transformed. */
@@ -1462,6 +1473,7 @@ restart:
int i;
for (i=0; i<nx; i++)
xfrm_state_put(xfrm[i]);
+ XFRM_INC_STATS(XFRM_MIB_OUTBUNDLEERROR);
goto error;
}
@@ -1482,6 +1494,7 @@ restart:
if (dst)
dst_free(dst);
+ XFRM_INC_STATS(XFRM_MIB_OUTBUNDLEERROR);
err = -EHOSTUNREACH;
goto error;
}
@@ -1494,6 +1507,7 @@ restart:
write_unlock_bh(&policy->lock);
if (dst)
dst_free(dst);
+ XFRM_INC_STATS(XFRM_MIB_OUTBUNDLEERROR);
goto error;
}
@@ -1635,8 +1649,11 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
u8 fl_dir = policy_to_flow_dir(dir);
int xerr_idx = -1;
- if (xfrm_decode_session(skb, &fl, family) < 0)
+ if (xfrm_decode_session(skb, &fl, family) < 0) {
+ XFRM_INC_STATS(XFRM_MIB_INHDRERROR);
return 0;
+ }
+
nf_nat_decode_session(skb, &fl, family);
/* First, check used SA against their selectors. */
@@ -1645,28 +1662,35 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
for (i=skb->sp->len-1; i>=0; i--) {
struct xfrm_state *x = skb->sp->xvec[i];
- if (!xfrm_selector_match(&x->sel, &fl, family))
+ if (!xfrm_selector_match(&x->sel, &fl, family)) {
+ XFRM_INC_STATS(XFRM_MIB_INSTATEMISMATCH);
return 0;
+ }
}
}
pol = NULL;
if (sk && sk->sk_policy[dir]) {
pol = xfrm_sk_policy_lookup(sk, dir, &fl);
- if (IS_ERR(pol))
+ if (IS_ERR(pol)) {
+ XFRM_INC_STATS(XFRM_MIB_INPOLERROR);
return 0;
+ }
}
if (!pol)
pol = flow_cache_lookup(&fl, family, fl_dir,
xfrm_policy_lookup);
- if (IS_ERR(pol))
+ if (IS_ERR(pol)) {
+ XFRM_INC_STATS(XFRM_MIB_INPOLERROR);
return 0;
+ }
if (!pol) {
if (skb->sp && secpath_has_nontransport(skb->sp, 0, &xerr_idx)) {
xfrm_secpath_reject(xerr_idx, skb, &fl);
+ XFRM_INC_STATS(XFRM_MIB_INNOPOLS);
return 0;
}
return 1;
@@ -1682,8 +1706,10 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
&fl, family,
XFRM_POLICY_IN);
if (pols[1]) {
- if (IS_ERR(pols[1]))
+ if (IS_ERR(pols[1])) {
+ XFRM_INC_STATS(XFRM_MIB_INPOLERROR);
return 0;
+ }
pols[1]->curlft.use_time = get_seconds();
npols ++;
}
@@ -1704,10 +1730,14 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
for (pi = 0; pi < npols; pi++) {
if (pols[pi] != pol &&
- pols[pi]->action != XFRM_POLICY_ALLOW)
+ pols[pi]->action != XFRM_POLICY_ALLOW) {
+ XFRM_INC_STATS(XFRM_MIB_INPOLBLOCK);
goto reject;
- if (ti + pols[pi]->xfrm_nr >= XFRM_MAX_DEPTH)
+ }
+ if (ti + pols[pi]->xfrm_nr >= XFRM_MAX_DEPTH) {
+ XFRM_INC_STATS(XFRM_MIB_INBUFFERERROR);
goto reject_error;
+ }
for (i = 0; i < pols[pi]->xfrm_nr; i++)
tpp[ti++] = &pols[pi]->xfrm_vec[i];
}
@@ -1729,16 +1759,20 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
if (k < -1)
/* "-2 - errored_index" returned */
xerr_idx = -(2+k);
+ XFRM_INC_STATS(XFRM_MIB_INTMPLMISMATCH);
goto reject;
}
}
- if (secpath_has_nontransport(sp, k, &xerr_idx))
+ if (secpath_has_nontransport(sp, k, &xerr_idx)) {
+ XFRM_INC_STATS(XFRM_MIB_INTMPLMISMATCH);
goto reject;
+ }
xfrm_pols_put(pols, npols);
return 1;
}
+ XFRM_INC_STATS(XFRM_MIB_INPOLBLOCK);
reject:
xfrm_secpath_reject(xerr_idx, skb, &fl);
@@ -1752,8 +1786,11 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family)
{
struct flowi fl;
- if (xfrm_decode_session(skb, &fl, family) < 0)
+ if (xfrm_decode_session(skb, &fl, family) < 0) {
+ /* XXX: we should have something like FWDHDRERROR here. */
+ XFRM_INC_STATS(XFRM_MIB_INHDRERROR);
return 0;
+ }
return xfrm_lookup(&skb->dst, &fl, NULL, 0) == 0;
}
--
1.4.4.2
^ permalink raw reply related
* Re: [PATCH 2.4.35.3] Fix the "InAddrErrors" increasing problem
From: Gui Jianfeng @ 2007-10-22 6:45 UTC (permalink / raw)
To: Krishna Kumar2; +Cc: davem, netdev
In-Reply-To: <OF2D84A661.11AB43B8-ON6525737C.002349E6-6525737C.00238C77@in.ibm.com>
Krishna Kumar2 写道:
> Gui Jianfeng wrote on 10/22/2007 11:37:07 AM:
>
>> @@ -310,8 +310,12 @@ static inline int ip_rcv_finish(struct s
>> * how the packet travels inside Linux networking.
>> */
>> if (skb->dst == NULL) {
>> - if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev))
>> - goto drop;
>> + int err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
> dev);
>> + if (unlikely(err)) {
>> + if (err == -EHOSTUNREACH)
>> + IP_INC_STATS_BH(IpInAddrErrors);
>> + }
>> + goto drop;
>> }
>
> Shouldn't the "goto drop" be inside the "if (unlikely(err)) {" case?
yes, you are right :-)
> And normally it is nice to have a blank line after variable declaration.
>
> - KK
>
>
>
--
Regards
Gui Jianfeng
--------------------------------------------------
Gui Jianfeng
Development Dept.I
Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
8/F., Civil Defense Building, No.189 Guangzhou Road,
Nanjing, 210029, China
TEL: +86+25-86630566-851
COINS: 79955-851
FAX: +86+25-83317685
MAIL:guijianfeng@cn.fujitsu.com
--------------------------------------------------
^ permalink raw reply
* Re: [PATCH] netdev: Reset ipv4 flags during bundle creation on interfamily ipsec
From: Joakim Koskela @ 2007-10-22 6:55 UTC (permalink / raw)
To: Herbert Xu; +Cc: netdev, davem, kaber
In-Reply-To: <E1IisnN-0003rh-00@gondolin.me.apana.org.au>
On Friday 19 October 2007 17:25:49 Herbert Xu wrote:
> Joakim Koskela <joakim.koskela@hiit.fi> wrote:
> > I'm not sure I follow. This affects the ipv6 bundling only where the
> > struct (fl_tunnel) has previously been used for ipv6 addresses. Not that
> > we are using the same block for holding the ipv4 info, the tos-value is
> > really undefined before we reset it.
>
> You're right. But sure the same bug could affect IPv4 as well
> if you had a 4-6-4 configuration. Let me think about this one
> a bit more.
Hi, and thanks for the feedback. True, this one affects only one level of
inter-family, and supporting more would require a lot more changes in the
bundle creation (perhaps combining both versions and taking better into
account the outer family of the last transformation..).
Another quite annoying example of this is that 6 in 4 actually crashes the
kernel on 64 bit, as xfrm_dst_lookup around xfrm6_policy.c:197 changes rt
from a rt6_info to a rtable. On 64 bit, rt->rt61i_node will usually contain
something (due to the larger pointer size), making the path_cookie assignment
on line 208 crash.
I've been trying address this in a proper manner, but it hasn't really
progressed quite the way I've wanted (..thus this shallow patch, just to make
6-4 inter-work in most cases on the standard kernel). Needless to say, any
work done for this would be greatly appreciated :)
^ permalink raw reply
* Re: [PATCH] netdev: Interfamily support for IPSEC BEET
From: Joakim Koskela @ 2007-10-22 6:59 UTC (permalink / raw)
To: Herbert Xu; +Cc: netdev, davem, kaber
In-Reply-To: <E1Iisk2-0003qj-00@gondolin.me.apana.org.au>
On Friday 19 October 2007 17:22:22 Herbert Xu wrote:
>
> Please hold onto this. I've got a more generic version of this
> that doesn't duplicate the inter-family logic between BEET mode
> and tunnel mode.
>
> Instead I've created a generic function that reads info from the
> inner header and puts them in an address-neutral format which is
> then picked up by either BEET or tunnel mode.
Ok, this really sounds like a good development. Do you think it could make it
in time for 2.6.24?
Thanks,
Joakim
^ permalink raw reply
* Re: [PATCH 2.4.35.3] Fix the "InAddrErrors" increasing problem
From: Gui Jianfeng @ 2007-10-22 7:10 UTC (permalink / raw)
To: Krishna Kumar2; +Cc: davem, netdev
In-Reply-To: <OF2D84A661.11AB43B8-ON6525737C.002349E6-6525737C.00238C77@in.ibm.com>
Krishna Kumar2 写道:
> Gui Jianfeng wrote on 10/22/2007 11:37:07 AM:
>
>> @@ -310,8 +310,12 @@ static inline int ip_rcv_finish(struct s
>> * how the packet travels inside Linux networking.
>> */
>> if (skb->dst == NULL) {
>> - if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev))
>> - goto drop;
>> + int err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos,
> dev);
>> + if (unlikely(err)) {
>> + if (err == -EHOSTUNREACH)
>> + IP_INC_STATS_BH(IpInAddrErrors);
>> + }
>> + goto drop;
>> }
>
> Shouldn't the "goto drop" be inside the "if (unlikely(err)) {" case?
> And normally it is nice to have a blank line after variable declaration.
sorry for my careless, here is the correct one
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
-------
diff -Narup linux-2.4.35.3/net/ipv4/ip_input.c linux-2.4.35.3-prep/net/ipv4/ip_input.c
--- linux-2.4.35.3/net/ipv4/ip_input.c 2007-09-24 06:02:58.000000000 +0800
+++ linux-2.4.35.3-prep/net/ipv4/ip_input.c 2007-09-26 11:30:22.000000000 +0800
@@ -310,8 +310,13 @@ static inline int ip_rcv_finish(struct s
* how the packet travels inside Linux networking.
*/
if (skb->dst == NULL) {
- if (ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev))
+ int err = ip_route_input(skb, iph->daddr, iph->saddr, iph->tos, dev);
+
+ if (unlikely(err)) {
+ if (err == -EHOSTUNREACH)
+ IP_INC_STATS_BH(IpInAddrErrors);
goto drop;
+ }
}
#ifdef CONFIG_NET_CLS_ROUTE
diff -Narup linux-2.4.35.3/net/ipv4/route.c linux-2.4.35.3-prep/net/ipv4/route.c
--- linux-2.4.35.3/net/ipv4/route.c 2007-09-24 06:02:58.000000000 +0800
+++ linux-2.4.35.3-prep/net/ipv4/route.c 2007-09-26 11:29:19.000000000 +0800
@@ -1450,7 +1450,7 @@ int ip_route_input_slow(struct sk_buff *
*/
if ((err = fib_lookup(&key, &res)) != 0) {
if (!IN_DEV_FORWARD(in_dev))
- goto e_inval;
+ goto e_hostunreach;
goto no_route;
}
free_res = 1;
@@ -1499,7 +1499,7 @@ int ip_route_input_slow(struct sk_buff *
}
if (!IN_DEV_FORWARD(in_dev))
- goto e_inval;
+ goto e_hostunreach;
if (res.type != RTN_UNICAST)
goto martian_destination;
@@ -1668,6 +1668,11 @@ martian_destination:
"%u.%u.%u.%u, dev %s\n",
NIPQUAD(daddr), NIPQUAD(saddr), dev->name);
#endif
+
+e_hostunreach:
+ err = -EHOSTUNREACH;
+ goto done;
+
e_inval:
err = -EINVAL;
goto done;
>
> - KK
>
>
>
^ permalink raw reply
* Re: [PATCH 2.4.35.3] Fix the "InAddrErrors" increasing problem
From: David Miller @ 2007-10-22 7:23 UTC (permalink / raw)
To: guijianfeng; +Cc: krkumar2, netdev
In-Reply-To: <471C4CF6.1000206@cn.fujitsu.com>
From: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Date: Mon, 22 Oct 2007 15:10:46 +0800
> sorry for my careless, here is the correct one
>
> Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
BTW, I would also like to say that I think a statistics correction is
totally inappropriate for the 2.4.x kernel series which is in super
maintainence mode.
Only crash fixes and fixes for bugs that severely harm functionality
should go into that tree.
These obscure statistic counter cases absolutely do not qualify.
^ permalink raw reply
* Re: net: alignment problem in icmp code
From: Pierre Ossman @ 2007-10-22 7:23 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <20071021.221524.49830652.davem@davemloft.net>
[-- Attachment #1: Type: text/plain, Size: 1854 bytes --]
On Sun, 21 Oct 2007 22:15:24 -0700 (PDT)
David Miller <davem@davemloft.net> wrote:
>
> Sure. But the language defines that the types in question
> must be 64-bit aligned, so it is legal for the compiler to
> emit this code.
>
> It's not a GCC bug.
>
I've confirmed this behaviour on the AVR32 arch, and had a second look in the spec. The only way GCC can get away with this is by using a very creative interpretation of the result of casting a pointer to one type to a pointer to another type (which ISO C leaves undefined). Basically:
1. A cast from a pointer to one type to a pointer to a second type does not change the value. (GCC behaviour which we rely on heavily, even in your suggested patch).
2. A cast from a pointer to one type to a pointer to a second type changes the value so that it properly aligns with the second type. (As a cast to void*, which memcpy() requires, is safe according to ISO C, the pointer modification must be from char* to struct icmphdr*).
As 1 and 2 conflict, GCC's behaviour for pointer casts is still rather undefined. So although within the requirements of ISO C, it's rather user hostile. And it casts doubt on every pointer cast used.
> If you want to let the compiler know that a pointer to a type might
> not be aligned, you have to tell it so.
Which you can't do within the confines of ISO C. The get_unaligned() macro uses some GCC trickery (even outside what GCC documents as defined behaviour). To stay "clean", you have to avoid casting char* to foo*.
With all that said, as GCC does what it does, we can't really rely on a memcpy() anyway, so I support your patch.
As for other instances of unaligned accesses, is there any active work on getting rid of those? And would you accept more patches for fixing them? (Code complexity being the downside)
Rgds
Pierre
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^ permalink raw reply
* Re: [patch 0/1] remove header_ops bug in qeth driver
From: Heiko Carstens @ 2007-10-22 7:24 UTC (permalink / raw)
To: Ursula Braun
Cc: jgarzik, netdev, linux-s390, mschwid2, apw, linux-kernel,
kamalesh, kaber, Stephen Hemminger
In-Reply-To: <20071019215538.395133000@linux.vnet.ibm.com>
On Fri, Oct 19, 2007 at 11:55:38PM +0200, Ursula Braun wrote:
> --
> Remove qeth driver bug introduced by this commit:
>
> commit 3b04ddde02cf1b6f14f2697da5c20eca5715017f
> Author: Stephen Hemminger <shemminger@linux-foundation.org>
> Date: Tue Oct 9 01:40:57 2007 -0700
>
> [NET]: Move hardware header operations out of netdevice.
Still broken:
Kernel BUG at 0000000000000002 [verbose debug info unavailable]
illegal operation: 0001 [#1]
Modules linked in:
CPU: 1 Not tainted
Process ip (pid: 2170, task: 0000000001f1d038, ksp: 0000000002d87b30)
Krnl PSW : 0704200180000000 0000000000000002 (0x2)
R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:2 PM:0 EA:3
Krnl GPRS: 0000000000000000 0000000000000038 00000000027c2800 00000000016d6000
00000000000086dd 00000000029f8b78 0000000000000000 00000000029f8b00
00000000029f8b40 00000000027c2800 0000000000000000 0000000002d874c8
00000000016d6000 00000000003cb960 00000000002c58d2 0000000002d874c8
Krnl Code:>0000000000000002: 0000 unknown
0000000000000004: 0000 unknown
0000000000000006: 0000 unknown
0000000000000008: 0000 unknown
000000000000000a: 0000 unknown
000000000000000c: 0000 unknown
000000000000000e: 0000 unknown
0000000000000010: 0000 unknown
Call Trace:
([<00000000002c588e>] neigh_connected_output+0x76/0x118)
[<0000000000339e00>] ip6_output2+0x22c/0x478
[<000000000033a46c>] ip6_output+0x250/0x10fc
[<000000000034d65e>] __ndisc_send+0x416/0x768
[<000000000034da1c>] ndisc_send_rs+0x6c/0x7c
[<0000000000340776>] addrconf_dad_completed+0xb2/0x100
[<000000000034269c>] addrconf_dad_start+0xa4/0x134
[<000000000034279e>] addrconf_add_linklocal+0x72/0xa4
[<00000000003439d4>] addrconf_notify+0x6ec/0x8bc
[<000000000039905a>] notifier_call_chain+0x5e/0xa4
[<0000000000062832>] __raw_notifier_call_chain+0x26/0x38
[<0000000000062872>] raw_notifier_call_chain+0x2e/0x40
[<00000000002beaa8>] call_netdevice_notifiers+0x34/0x48
[<00000000002c0288>] dev_open+0xd4/0xe0
[<00000000002bed42>] dev_change_flags+0x14e/0x1c4
[<0000000000316cb2>] devinet_ioctl+0x5d2/0x724
[<000000000031753c>] inet_ioctl+0xf4/0x130
[<00000000002ac6fa>] sock_ioctl+0x86/0x300
[<00000000000c8124>] do_ioctl+0x50/0xe0
[<00000000000c8440>] vfs_ioctl+0x28c/0x3e4
[<00000000000c85e8>] sys_ioctl+0x50/0x8c
[<00000000000ff744>] dev_ifsioc+0xb8/0x4c8
[<00000000000fc15c>] compat_sys_ioctl+0x11c/0x444
[<00000000000229d0>] sysc_noemu+0x10/0x16
[<0000000077f3b9ca>] 0x77f3b9ca
^ permalink raw reply
* Re: Bluetooth patches for 2.6.24
From: Marcel Holtmann @ 2007-10-22 7:56 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <20071021.162614.58462652.davem@davemloft.net>
Hi Dave,
> > > these are the Bluetooth patches for the 2.6.24 kernel release. Please
> > > pull and send them to Linus.
> >
> > one of the cleanup patches slipped through the net. If you already
> > pulled my tree, then please re-pull. I pushed it on top of it.
>
> I think I got it all, thanks.
>
> Please get Bluetooth updates to me much sooner than 8
> days after the merge window opens up.
sorry for that, but I wanted to make sure that the new generic Bluetooth
SDIO driver makes it in and is working with the SDIO framework merge.
For the next releases, I don't see any dependencies on other merges, so
that should be no longer problem. Thanks for pulling.
Regards
Marcel
^ permalink raw reply
* Re: net: alignment problem in icmp code
From: David Miller @ 2007-10-22 8:31 UTC (permalink / raw)
To: drzeus; +Cc: netdev
In-Reply-To: <20071022092350.5c75b3bd@poseidon.drzeus.cx>
From: Pierre Ossman <drzeus@drzeus.cx>
Date: Mon, 22 Oct 2007 09:23:50 +0200
> As for other instances of unaligned accesses, is there any active
> work on getting rid of those? And would you accept more patches for
> fixing them? (Code complexity being the downside)
On fast paths we aren't going to add things like get_unaligned()
calls.
Every architecture should handle unaligned accesses properly, and for
the fast paths the network driver should provide the packet fully
aligned or take steps to make it so if it can't DMA directly into
2-byte offset buffers (such as copying the packet).
What is the specific reason why you see packet headers unaligned?
It's probably just some AVR networking driver that needs tweaks.
^ permalink raw reply
* Re: [PATCH] [IPSEC] IPV6: Fix to add tunnel mode SA correctly.
From: Herbert Xu @ 2007-10-22 8:37 UTC (permalink / raw)
To: Masahide NAKAMURA; +Cc: David Miller, netdev
In-Reply-To: <11930333741879-git-send-email-nakam@linux-ipv6.org>
On Mon, Oct 22, 2007 at 03:09:34PM +0900, Masahide NAKAMURA wrote:
> Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org>
Thanks for catching my silly bug!
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply
* Re: net: alignment problem in icmp code
From: Pierre Ossman @ 2007-10-22 8:42 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <20071022.013105.74746322.davem@davemloft.net>
[-- Attachment #1: Type: text/plain, Size: 1205 bytes --]
On Mon, 22 Oct 2007 01:31:05 -0700 (PDT)
David Miller <davem@davemloft.net> wrote:
>
> On fast paths we aren't going to add things like get_unaligned()
> calls.
>
> Every architecture should handle unaligned accesses properly, and for
> the fast paths the network driver should provide the packet fully
> aligned or take steps to make it so if it can't DMA directly into
> 2-byte offset buffers (such as copying the packet).
>
This seems like a rather evil layering violation. The hardware driver needs to be aware of every layer between itself and the IP stack for this to work. And what does "aligned" mean in this context? 32-bit aligned? 64-bit aligned? The entire thing is severely underdocumented (which is why I got hit by the problem in the first place).
Also, since I developed the code on a forgiving platform (x86), I didn't notice this requirement. Perhaps a WARN_ON(NET_IP_ALIGN && (skb->data & 0x3));?
> What is the specific reason why you see packet headers unaligned?
> It's probably just some AVR networking driver that needs tweaks.
It's my own driver (if_sdio for libertas), which did not reserve two bytes as that voodoo was unknown to me.
Rgds
Pierre
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^ permalink raw reply
* Re: [RFC][PATCH 0/3][XFRM]: Support packet processing error statistics.
From: Herbert Xu @ 2007-10-22 8:50 UTC (permalink / raw)
To: Masahide NAKAMURA; +Cc: David Miller, netdev
In-Reply-To: <11930334662094-git-send-email-nakam@linux-ipv6.org>
On Mon, Oct 22, 2007 at 03:11:06PM +0900, Masahide NAKAMURA wrote:
> This patch introduces statistics about transformation error (or almost error)
> factor at packet processing for developer.
> It is not a SNMP/MIB specification from IPsec/MIPv6 but a counter
> designed from current transformation source code.
>
> Comment please.
Looks fine to me. But could you hold onto this for a few days?
I'm in the process of merging the input paths of IPv4 and IPv6.
Once that's done you'll only need to count things once rather
than once for IPv4 and again for IPv6.
Thanks,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply
* Re: [PATCH] netdev: Reset ipv4 flags during bundle creation on interfamily ipsec
From: Herbert Xu @ 2007-10-22 8:51 UTC (permalink / raw)
To: Joakim Koskela; +Cc: netdev, davem, kaber
In-Reply-To: <200710220955.53895.joakim.koskela@hiit.fi>
On Mon, Oct 22, 2007 at 09:55:53AM +0300, Joakim Koskela wrote:
>
> Hi, and thanks for the feedback. True, this one affects only one level of
> inter-family, and supporting more would require a lot more changes in the
> bundle creation (perhaps combining both versions and taking better into
> account the outer family of the last transformation..).
I think I should have this fixed with my current tree. I'll
either post that tonight or tomorrow.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply
* Re: [PATCH] netdev: Interfamily support for IPSEC BEET
From: Herbert Xu @ 2007-10-22 8:52 UTC (permalink / raw)
To: Joakim Koskela; +Cc: netdev, davem, kaber
In-Reply-To: <200710220959.02544.joakim.koskela@hiit.fi>
On Mon, Oct 22, 2007 at 09:59:02AM +0300, Joakim Koskela wrote:
>
> Ok, this really sounds like a good development. Do you think it could make it
> in time for 2.6.24?
Sorry, I think it's 2.6.25 material.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
^ permalink raw reply
* Re: [RFC][PATCH 0/3][XFRM]: Support packet processing error statistics.
From: Masahide NAKAMURA @ 2007-10-22 8:42 UTC (permalink / raw)
To: Herbert Xu; +Cc: David Miller, netdev
In-Reply-To: <20071022085040.GA17954@gondor.apana.org.au>
Monday 22 October 2007 17:50, Herbert Xu wrote:
> On Mon, Oct 22, 2007 at 03:11:06PM +0900, Masahide NAKAMURA wrote:
> > This patch introduces statistics about transformation error (or almost error)
> > factor at packet processing for developer.
> > It is not a SNMP/MIB specification from IPsec/MIPv6 but a counter
> > designed from current transformation source code.
> >
> > Comment please.
>
> Looks fine to me. But could you hold onto this for a few days?
> I'm in the process of merging the input paths of IPv4 and IPv6.
> Once that's done you'll only need to count things once rather
> than once for IPv4 and again for IPv6.
No problem, I'll fix my patches upon your work and resend them.
Regards,
--
Masahide NAKAMURA
^ permalink raw reply
* Re: net: alignment problem in icmp code
From: David Miller @ 2007-10-22 9:05 UTC (permalink / raw)
To: drzeus; +Cc: netdev
In-Reply-To: <20071022104208.78c79467@poseidon.drzeus.cx>
From: Pierre Ossman <drzeus@drzeus.cx>
Date: Mon, 22 Oct 2007 10:42:08 +0200
> This seems like a rather evil layering violation.
This has a 10+ year precedence and it's why the Linux networking stack
is so fast. If you read any other driver you would have seen the
skb_reserve() call every one of them do to align the headers.
I think I've tolerated this long enough.
Are you going keep teaching me how the C language works, how GCC
interprets it, and how evil the Linux networking is, or are you going
to fix the bug in your driver? :-)
^ permalink raw reply
* Re: about multiple network interface
From: Evgeniy Polyakov @ 2007-10-22 9:14 UTC (permalink / raw)
To: wit; +Cc: netdev
In-Reply-To: <105610bf0710211909r6ab2b63fo8a4f67eba6c05bc7@mail.gmail.com>
On Mon, Oct 22, 2007 at 10:09:38AM +0800, wit (is01kzh@gmail.com) wrote:
> But this does work until I add a ifcfg-eth0 in
> sysconfig/network-script with the following content:
> DEVICE=eth0
> ONBOOT=yes
>
> What is the relationship between these two files? And sometimes, I see
It depends on your distro - when script calls "modprobe $DEVICE"
this ends up with modprobe eth0, which will check modprobe.conf.
> this message:
> Bringing up interface eth0: e100 device does not seem to be present, delaying e
> th0 initialization.
> Why??
This is fedora, right? Check you kernel config, scripts and whatever is
needed to load driver first and only then try to setup an address.
--
Evgeniy Polyakov
^ permalink raw reply
* Re: Regression in current git - Network Manager fails (bisected)
From: Denis V. Lunev @ 2007-10-22 9:22 UTC (permalink / raw)
To: netdev, Denis V. Lunev, David S. Miller, Alexey Kuznetsov
In-Reply-To: <20071022005857.GA6317@nineveh.local>
We have spent some time with the problem with Alexey and there are no
guesses for now.
Is it possible to name exact version of Network Manager and all
libraries related + provide us an output of strace with full buffers
send/received from netlink. Something like
strace -v -x -s 32768 <nm>
Regards,
Den
Joseph Fannin wrote:
> Network Manager (the freedesktop.org one) fails to work with Linus's
> current git on a couple of different boxes I have here. All the boxes
> have different NIC types, with different drivers.
>
> I've bisected it down to cd40b7d3983c708aabe3d3008ec64ffce56d33b0 ,
> "[NET]: make netlink user -> kernel interface synchronious". I've
> double checked this by testing the kernel as of the immediately
> previous commit; Network Manager works with that one, as it did on all
> my machines in 2.6.23-mm1.
>
> The netlink change seems to confuse N-M, and it somehow decides that
> there's no link beat, so doesn't try to bring up the interface. If I
> run "ifconfig eth0 up", N-M will decide there's a carrier after all
> and takes over. Ethtool detects the link state correctly even with
> the interface down.
>
> If I down the interface again with ifconfig, N-M brings it right back
> up without a problem, but if I kill N-M, it'll down the interface
> before it exits, and fail in the same way as before when restarted.
>
> N-M also emits this error:
>
> "-- Error: Invalid message: type=DONE length=20 flags=<MULTI> sequence-nr=1193012574 pid=1185943630"
>
> ...which it doesn't do on kernels where it works normally.
> strace'ing NetworkManager shows that it prints that message just after
> talking over a netlink socket.
>
> Networking otherwise works fine here with the latest git and N-M, if I
> use the ifconfig "trick" to get the link up.
>
> --
> Joseph Fannin
> jfannin@gmail.com
>
>
^ permalink raw reply
* [PATCH] wan: new driver retina
From: Matti Linnanvuori @ 2007-10-22 9:15 UTC (permalink / raw)
To: akpm, jgarzik, netdev
Retina G.703 and G.SHDSL drivers.
Signed-off-by: Matti Linnanvuori <mattilinnanvuori@yahoo.com>
---
diff -Napur linux-2.6.23/drivers/net/wan/Kconfig linux-2.6.24/drivers/net/wan/Kconfig
--- linux-2.6.23/drivers/net/wan/Kconfig 2007-10-09 23:31:38.000000000 +0300
+++ linux-2.6.24/drivers/net/wan/Kconfig 2007-10-22 11:58:36.776467534 +0300
@@ -494,4 +494,15 @@ config SBNI_MULTILINE
If unsure, say N.
+config RETINA
+ tristate "Retina support"
+ depends on m && HDLC_PPP
+ help
+ Driver for Retina C5400 and E2200 network cards, which
+ support G.703, G.SHDSL, Ethernet and PPP.
+
+ The driver will be compiled as a module: the
+ module will be called retina.
+
+
endif # WAN
diff -Napur linux-2.6.23/drivers/net/wan/Makefile linux-2.6.24/drivers/net/wan/Makefile
--- linux-2.6.23/drivers/net/wan/Makefile 2007-10-09 23:31:38.000000000 +0300
+++ linux-2.6.24/drivers/net/wan/Makefile 2007-10-22 12:05:57.638172823 +0300
@@ -42,6 +42,7 @@ obj-$(CONFIG_C101) += c101.o
obj-$(CONFIG_WANXL) += wanxl.o
obj-$(CONFIG_PCI200SYN) += pci200syn.o
obj-$(CONFIG_PC300TOO) += pc300too.o
+obj-$(CONFIG_RETINA) += retina.o
clean-files := wanxlfw.inc
$(obj)/wanxl.o: $(obj)/wanxlfw.inc
diff -Napur linux-2.6.23/drivers/net/wan/retina.c linux-2.6.24/drivers/net/wan/retina.c
--- linux-2.6.23/drivers/net/wan/retina.c 1970-01-01 02:00:00.000000000 +0200
+++ linux-2.6.24/drivers/net/wan/retina.c 2007-10-22 12:01:44.856033562 +0300
@@ -0,0 +1,4503 @@
+/* V1.2.4 */
+
+/* retina.c: */
+
+/*
+ This driver is based on:
+
+ /drivers/net/fepci.c
+ FEPCI (Frame Engine for PCI) driver for Linux operating system
+
+ Copyright (C) 2002-2003 Jouni Kujala, Flexibilis Oy.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ All the drivers derived from or based on this code fall under the
+ GPL and must retain the copyright and license notice.
+
+ CHANGES
+ -------
+
+ v1.0.0 (JK) - May 27, 2003:
+ * Original driver.
+
+ v1.1.0 (JK) - June, 2003:
+ * final Flexibilis driver
+
+ v1.2.0: NO_ARP option back again
+
+ v1.2.1: (JT) - Aug 21, 2003:
+ * Added support for Retina C5400 card including PROC stuff.
+
+ v1.2.2: (Petri Ahonen) - Sep 19, 2003:
+ * PtP changes:
+ * Added retina_ptp_interfaces module parameter for initializing
+ * interfaces in PtP mode.
+ * for example:
+ * insmod ./retina.o retina_ptp_interfaces=dcp00,dcp01
+ * Added retina_noarp_with_ptp module parameter to set/clear
+ * NOARP flag on PtP interfaces
+ * for example:
+ * insmod ./retina.o retina_ptp_interfaces=dcp00 retina_noarp_with_ptp=0
+
+ v1.2.3: (JT) - Nov 14, 2003:
+ * Fixed PROC packet counters.
+
+ v1.2.4: (JT) - May 14, 2004:
+ * Made initializing MACs safer.
+*/
+
+#define DRV_NAME "retina"
+#define DRV_VERSION "1.2.5"
+#define DRV_RELDATE "November 14, 2003"
+
+#define DBG_PRINT(xyz...)
+/* printk(KERN_DEBUG xyz) */
+
+/* uncomment this if you want to have debug files in /proc */
+/* #define DEBUG_PROC_FILES */
+
+/* obsolete
+ see retina_noarp_with_ptp
+define FEPCI_NO_ARP */
+
+/* uncomment this if you want to have point-to-point links
+ ! Only interfaces listed in retina_ptp_interfaces will
+ be created in PtP mode
+ see retina_ptp_interfaces */
+#define FEPCI_POINT_TO_POINT
+
+/* need to update MODULE_PARM also */
+#define MAX_DEVICES 32u
+
+#define MAX_TX_UNITS 256u
+#define MAX_RX_UNITS 256u
+
+#define MAX_UNIT_SZ_ORDER 10u
+
+#define TX_RING_SIZE 8u
+#define RX_RING_SIZE 8u
+
+/* need to update MODULE_PARM also */
+#define CHANNELS 4u
+
+#define RX_FIFO_THRESHOLD_PACKET_MODE 0x4
+#define TX_FIFO_THRESHOLD_PACKET_MODE 0x4
+#define TX_DESC_THRESHOLD_PACKET_MODE 0x4
+
+#define RX_FIFO_THRESHOLD_STREAM_MODE 0x4
+#define TX_FIFO_THRESHOLD_STREAM_MODE 0x7
+#define TX_DESC_THRESHOLD_STREAM_MODE 0x1
+
+/* need to update MODULE_PARM also */
+#define MAX_INTERFACES (CHANNELS*MAX_DEVICES)
+
+const char fepci_name[] = "retina";
+const char fepci_alarm_manager_name[] = "retina alarm manager";
+const char fepci_NAME[] = "RETINA";
+const char fepci_netdev_name[] = "dcpxx";
+const char fepci_proc_entry_name[] = "driver/retina";
+
+static unsigned int find_cnt;
+
+#ifdef FEPCI_POINT_TO_POINT
+static char *retina_ptp_interfaces[MAX_INTERFACES];
+static int retina_noarp_with_ptp = 1;
+#endif /* FEPCI_POINT_TO_POINT */
+
+#define fepci_features_proc_entry_name "driver/retina/%02x:%02x.%02x/features"
+#define fepci_settings_proc_entry_name "driver/retina/%02x:%02x.%02x/settings"
+#define fepci_status_proc_entry_name "driver/retina/%02x:%02x.%02x/status"
+
+#ifdef DEBUG_PROC_FILES
+#define fepci_counters_proc_entry_name \
+"driver/retina/%02x:%02x.%02x/counters_ch%d"
+#define fepci_descriptors_proc_entry_name \
+"driver/retina/%02x:%02x.%02x/descriptors_ch%d"
+#define fepci_stream_counters_proc_entry_name \
+"driver/retina/%02x:%02x.%02x/stream_counters_ch%d"
+#define fepci_registers_proc_entry_name \
+"driver/retina/%02x:%02x.%02x/registers_ch%d"
+#endif /* DEBUG_PROC_FILES */
+
+/* Time in jiffies before concluding that the transmitter is hung */
+#define TX_TIMEOUT (20*HZ)
+
+#if !defined(__OPTIMIZE__)
+#warning You must compile this file with correct options.
+#warning See the last lines of the source file.
+#error You have to compile this driver with "-O".
+#endif
+#include "retina.h"
+
+#include <linux/mm.h>
+#include <linux/random.h>
+#include <linux/proc_fs.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+#include <linux/version.h>
+#include <linux/pfn.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
+
+#include <asm/unaligned.h>
+#include <asm/pgtable.h>
+
+MODULE_VERSION(DRV_VERSION);
+
+#undef inb
+#undef inw
+#undef inl
+#undef outb
+#undef outw
+#undef outl
+#define inb nonexistent /* force using only 32bit access */
+#define inw nonexistent /* force using only 32bit access */
+#define inl(x) le32_to_cpu(readl(x))
+#define outb nonexistent /* force using only 32bit access */
+#define outw nonexistent /* force using only 32bit access */
+#define outl(value, address) writel(cpu_to_le32(value), address)
+
+#define VMA_OFFSET(vma) ((vma)->vm_pgoff << PAGE_SHIFT)
+
+enum pci_id_flags_bits {
+ /* Set PCI command register bits before calling probe */
+ PCI_USES_IO = 1, PCI_USES_MEM = 2, PCI_USES_MASTER = 4,
+ /* Read and map the single following PCI BAR */
+ PCI_ADDR0 = 0 << 4, PCI_ADDR1 = 1 << 4, PCI_ADDR2 =
+ 2 << 4, PCI_ADDR3 = 3 << 4,
+ PCI_ADDR_64BITS = 0x100, PCI_NO_ACPI_WAKE =
+ 0x200, PCI_NO_MIN_LATENCY = 0x400,
+ PCI_UNUSED_IRQ = 0x800,
+};
+
+/* PCI I/O space extent */
+#define FEPCI_SIZE 0x20000
+#define PCI_IOTYPE (PCI_USES_MASTER | PCI_USES_MEM | PCI_ADDR0)
+
+struct pci_id_info {
+ const char *name;
+ struct match_info {
+ int pci, pci_mask, subsystem, subsystem_mask;
+ int revision, revision_mask; /* Only 8 bits. */
+ } id;
+ enum pci_id_flags_bits pci_flags;
+ int io_size; /* Needed for I/O region check or ioremap */
+ int drv_flags; /* Driver use, intended as capability flags */
+};
+
+static struct pci_id_info pci_id_tbl[] = {
+ {"Frame Engine for PCI (FEPCI)",
+ {0x1FC00300, 0x1FC00301, 0xffffffff},
+ PCI_IOTYPE, FEPCI_SIZE},
+ {0,},
+};
+
+static struct pci_device_id fepci_pci_tbl[] __devinitdata = {
+ {0x1FC0, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0x1FC0, 0x0301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0,}
+};
+
+MODULE_DESCRIPTION("Frame Engine for PCI (FEPCI)");
+MODULE_AUTHOR("Jouni Kujala");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, fepci_pci_tbl);
+
+/* Linux 2.4 appears to drop POINTOPOINT,BROADCAST and NOARP flags in SIOCSFLAGS
+ * This workaround allows load time per interface ptp mode configuration.
+ * Runtime ptp mode changes would either require changes to 2.4 or
+ * use of proprietary ioctls, which ifconfig knows nothing about anyway
+ */
+
+static unsigned interfaces = MAX_INTERFACES;
+#ifdef FEPCI_POINT_TO_POINT
+module_param_array(retina_ptp_interfaces, charp, &interfaces, S_IRUGO);
+module_param(retina_noarp_with_ptp, bool, S_IRUGO);
+MODULE_PARM_DESC(retina_noarp_with_ptp,
+ "0 to disable NOARP, "
+ "1 to enable NOARP on pointopoint interfaces");
+#endif
+
+struct fepci_ch_private {
+ unsigned int channel_number;
+ struct net_device *this_dev;
+
+ struct fepci_card_private *this_card_priv;
+
+ unsigned int reg_rxctrl;
+ unsigned int reg_txctrl;
+
+ struct fepci_desc *rx_desc; /* rx_ring start */
+ struct fepci_desc *tx_desc; /* tx_ring start */
+ struct sk_buff *rx_skbuff[RX_RING_SIZE];
+ struct sk_buff *tx_skbuff[TX_RING_SIZE];
+
+ struct timer_list timer;
+ struct net_device_stats stats;
+
+ unsigned drv_flags;
+
+ unsigned int rx_buf_sz; /* MTU+slack */
+ unsigned int cur_tx; /* the next filled tx_descriptor */
+ /* in stream mode the desc which is being transmitted */
+ /* rx_descriptor where next packet transferred */
+ unsigned int cur_rx;
+ /* in stream mode the desc which is being received */
+
+/* stream mode: */
+ bool in_eth_mode;
+ bool in_stream_mode;
+ bool stream_on;
+ u32 *rx_buffer;
+ u32 *tx_buffer;
+ unsigned bufsize_order; /* 10=1kB,11=2kB,12=4kB...16=64kB */
+ u32 bufsize;
+ unsigned unit_sz_order; /* 8=256B...14=16kB */
+ u32 unit_sz;
+ unsigned units; /* 2,4,8,16,...,256 */
+ /* fake units (and pointers) are for faking larger unit sizes to
+ * the user than what is the maximum internal unit size in FEPCI */
+ unsigned fake_unit_sz_order;
+ u32 fake_unit_sz;
+ unsigned fake_units;
+ u32 *tx_unit[MAX_TX_UNITS];
+ u32 *rx_unit[MAX_RX_UNITS];
+ unsigned cur_tx_unit; /* last sent tx_unit */
+ /* rx_unit where to next packet is transferred */
+ unsigned cur_rx_unit;
+/* char device: */
+ unsigned minor; /* currently the same as card_nuber */
+/* debugging stuff for packet mode: */
+ /* rx-errors in descriptors */
+ unsigned int rx_desc_fifo_err;
+ unsigned int rx_desc_size_err;
+ unsigned int rx_desc_crc_err;
+ unsigned int rx_desc_octet_err;
+ unsigned rx_desc_line_err;
+ /* tx-errors in descriptors */
+ unsigned tx_desc_fifo_err;
+ /* rx-errors in interrupts */
+ unsigned rx_int_fifo_err;
+ unsigned rx_int_frame_dropped_err;
+ /* tx-errors in interrupts */
+ unsigned tx_int_fifo_err;
+ /* ints */
+ unsigned interrupts;
+ unsigned rx_interrupts;
+ unsigned tx_interrupts;
+ /* error combination tables */
+ /* fifo,size,crc,octet,line */
+ unsigned rx_desc_err_table[2][2][2][2][2];
+ unsigned int_err_table[2][2]; /* fifo,frame_dropped */
+ /* skbuff counters */
+ unsigned rx_skbuffs_in;
+ unsigned rx_skbuffs_out;
+ unsigned tx_skbuffs_in;
+ unsigned tx_skbuffs_out;
+/* debugging stuff for stream mode: */
+ /* rx-errors in descriptors */
+ unsigned rx_desc_fifo_err_stream;
+ unsigned rx_desc_size_err_stream;
+ unsigned rx_desc_crc_err_stream;
+ unsigned rx_desc_octet_err_stream;
+ unsigned rx_desc_line_err_stream;
+ /* tx-errors in descriptors */
+ unsigned tx_desc_fifo_err_stream;
+ /* rx-errors in interrupts */
+ unsigned rx_int_fifo_err_stream;
+ unsigned rx_int_frame_dropped_err_stream;
+ /* tx-errors in interrupts */
+ unsigned tx_int_fifo_err_stream;
+ /* ints */
+ unsigned interrupts_stream;
+ unsigned rx_interrupts_stream;
+ unsigned tx_interrupts_stream;
+ /* error combination tables */
+ /* fifo,size,crc,octet,line */
+ unsigned rx_desc_err_table_stream[2][2][2][2][2];
+ unsigned int_err_table_stream[2][2]; /* fifo,frame_dropped */
+/* other: */
+ /* tx interrupts since last timer interrupt */
+ unsigned tx_interrupts_since_last_timer;
+/* small packet counters: */
+ unsigned rx_packets_of_size_0;
+ unsigned rx_packets_of_size_1;
+ unsigned rx_packets_of_size_2;
+ unsigned rx_packets_of_size_3;
+ unsigned rx_packets_of_size_4_7;
+ unsigned rx_packets_of_size_8_15;
+ unsigned rx_packets_of_size_16_31;
+/* small packet counters for stream: */
+ unsigned rx_packets_of_size_0_stream;
+ unsigned rx_packets_of_size_1_stream;
+ unsigned rx_packets_of_size_2_stream;
+ unsigned rx_packets_of_size_3_stream;
+ unsigned rx_packets_of_size_4_7_stream;
+ unsigned rx_packets_of_size_8_15_stream;
+ unsigned rx_packets_of_size_16_31_stream;
+};
+
+struct fepci_card_private {
+ unsigned int card_number;
+ u8 *ioaddr;
+ /* Process ID of the current mailbox user
+ * (for whom it is reserved for) */
+ unsigned int ioctl_saved_pid;
+ struct pci_dev *pci_dev;
+ struct fepci_ch_private *ch_privates[CHANNELS];
+
+ wait_queue_head_t alarm_manager_wait_q;
+ struct timer_list mailbox_timer;
+
+ wait_queue_head_t stream_receive_q;
+ wait_queue_head_t stream_transmit_q;
+ wait_queue_head_t stream_both_q;
+
+ struct rw_semaphore semaphore;
+};
+
+/* Offsets to the FEPCI registers */
+enum fepci_offsets {
+ reg_custom = 0x40,
+
+ reg_first_int_mask = 0x80,
+ reg_first_int_status = 0xc0,
+
+ reg_first_rxctrl = 0x4000,
+ to_next_rxctrl = 0x80,
+
+ reg_first_txctrl = 0x6000,
+ to_next_txctrl = 0x80,
+
+ first_rx_desc = 0x10000,
+ to_next_ch_rx_desc = 0x200,
+
+ first_tx_desc = 0x18000,
+ to_next_ch_tx_desc = 0x200,
+};
+
+enum reg_custom_bits {
+ AM_interrupt_mask = 0x1,
+ AM_interrupt_status = 0x100,
+};
+
+enum reg_receive_control {
+ Rx_fifo_threshold = 0x7,
+ Receive_enable = 0x80000000,
+};
+
+enum reg_transmit_control {
+ Tx_fifo_threshold = 0x7,
+ Tx_desc_threshold = 0x700,
+ Transmit_enable = 0x80000000,
+};
+
+enum int_bits {
+ MaskFrameReceived = 0x01, MaskRxFifoError =
+ 0x02, MaskRxFrameDroppedError = 0x04,
+ MaskFrameTransmitted = 0x40, MaskTxFifoError = 0x80,
+ MaskAllInts = 0xc7,
+ IntrFrameReceived = 0x01, IntrRxFifoError =
+ 0x02, IntrRxFrameDroppedError = 0x04,
+ IntrFrameTransmitted = 0x40, IntrTxFifoError = 0x80,
+ IntrAllInts = 0xc7,
+};
+
+/* The FEPCI Rx and Tx buffer descriptors
+ * Elements are written as 32 bit for endian portability */
+
+struct fepci_desc {
+ u32 desc_a;
+ u32 desc_b;
+};
+
+enum desc_b_bits {
+ frame_length = 0xFFF,
+ fifo_error = 0x10000,
+ size_error = 0x20000,
+ crc_error = 0x40000,
+ octet_error = 0x80000,
+ line_error = 0x100000,
+ enable_transfer = 0x80000000,
+ transfer_not_done = 0x80000000,
+};
+
+/* global variables (common to whole driver, all the cards): */
+int major; /* char device major number */
+struct fepci_card_private card_privates[MAX_DEVICES];
+u32 stream_pointers;
+struct proc_dir_entry *proc_root_entry;
+
+void set_int_mask(int channel, u_char value, struct fepci_card_private *cp)
+{
+ void *address;
+ u32 shift, oldvalue;
+ DBG_PRINT("set_int_mask\n");
+ address = (cp->ioaddr) + reg_first_int_mask + (channel / 4L) * 4L;
+ shift = 8L * (channel % 4L);
+ oldvalue = inl((void *)address);
+ oldvalue &= ~(u32) (0xff << shift); /* clear bits */
+ oldvalue |= (value << shift); /* set bits */
+ outl(oldvalue, (void *)address);
+}
+
+u_char get_int_mask(int channel, void *ioaddr)
+{
+ void *address;
+ u32 shift, oldvalue;
+ DBG_PRINT("get_int_mask\n");
+ address = ioaddr + reg_first_int_mask + (channel / 4L) * 4L;
+ shift = 8L * (channel % 4L);
+ oldvalue = inl((void *)address);
+ oldvalue &= (0xff << shift); /* clear other bits */
+ return (oldvalue >> shift);
+}
+
+void clear_int(int channel, u_char value, void *ioaddr)
+{
+ void *address;
+ u32 shift, longvalue;
+ DBG_PRINT("clear_int\n");
+ address = ioaddr + reg_first_int_status + (channel / 4L) * 4L;
+ shift = 8L * (channel % 4L);
+ longvalue = value << shift;
+ outl(~longvalue, (void *)address);
+}
+
+u_char get_int_status(int channel, void *ioaddr)
+{
+ void *address;
+ u32 shift, oldvalue;
+ DBG_PRINT("get_int_status\n");
+ address = ioaddr + reg_first_int_status + (channel / 4L) * 4L;
+ shift = 8L * (channel % 4L);
+ oldvalue = inl((void *)address);
+ oldvalue &= (0xff << shift); /* clear other bits */
+ return (oldvalue >> shift);
+}
+
+void fillregisterswith_00(void *ioaddr)
+{
+ DBG_PRINT("fillregisterswith_00\n");
+ outl(0x0, (void *)(ioaddr + reg_first_rxctrl));
+ outl(0x0, (void *)(ioaddr + reg_first_txctrl));
+ outl(0x0, (void *)(ioaddr + reg_first_int_mask));
+ outl(0x0, (void *)(ioaddr + reg_first_int_status));
+ outl(0x0, (void *)(ioaddr + first_rx_desc));
+ outl(0x0, (void *)(ioaddr + first_tx_desc));
+}
+
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static int fepci_open(struct net_device *dev);
+static void fepci_timer(unsigned long data);
+static void fepci_tx_timeout(struct net_device *dev);
+static void fepci_init_ring(struct net_device *dev);
+static int fepci_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static irqreturn_t fepci_interrupt(int irq, void *dev_instance);
+static int fepci_rx(struct net_device *dev);
+static int fepci_close(struct net_device *dev);
+static struct net_device_stats *fepci_get_stats(struct net_device *dev);
+static void set_rx_mode(struct net_device *dev);
+static void fepci_remove_one(struct pci_dev *pdev);
+
+/* proc filesystem functions introduced: */
+
+static int fepci_proc_init_driver(void);
+static void fepci_proc_cleanup_driver(void);
+static void fepci_proc_init_card(int card_number, void *card_data);
+static void fepci_proc_cleanup_card(int card_number);
+#ifdef DEBUG_PROC_FILES
+static void fepci_proc_init_channel(int card_number, int channel_number,
+ void *channel_data);
+static void fepci_proc_cleanup_channel(int card_number, int channel_number);
+#endif /* DEBUG_PROC_FILES */
+
+/* char device operations: */
+
+ssize_t fepci_char_read(struct file *filp, char *buf, size_t count,
+ loff_t *f_pos);
+int fepci_char_open(struct inode *inode, struct file *filp);
+int fepci_char_release(struct inode *inode, struct file *filp);
+int fepci_char_mmap(struct file *filp, struct vm_area_struct *vma);
+int fepci_char_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg);
+
+struct file_operations fepci_char_fops = {
+ read:fepci_char_read,
+ ioctl:fepci_char_ioctl,
+ open:fepci_char_open,
+ release:fepci_char_release,
+ mmap:fepci_char_mmap,
+};
+
+int fepci_char_open(struct inode *inode, struct file *filp)
+{
+ unsigned int minor = MINOR(inode->i_rdev);
+ DBG_PRINT("fepci_char_open\n");
+ if (unlikely(minor >= find_cnt || card_privates[minor].pci_dev == NULL))
+ return -ENXIO;
+ filp->f_op = &fepci_char_fops;
+ if (unlikely(!try_module_get(THIS_MODULE)))
+ return -EBUSY;
+ return 0;
+}
+
+int fepci_char_release(struct inode *inode, struct file *filp)
+{
+ DBG_PRINT("fepci_char_release\n");
+ module_put(THIS_MODULE);
+ return 0;
+}
+
+void fepci_vma_open(struct vm_area_struct *vma)
+{
+ DBG_PRINT("fepci_vma_open\n");
+}
+
+void fepci_vma_close(struct vm_area_struct *vma)
+{
+ DBG_PRINT("fepci_vma_close\n");
+ module_put(THIS_MODULE);
+}
+
+static struct vm_operations_struct fepci_vm_ops = {
+ open:fepci_vma_open,
+ close:fepci_vma_close,
+};
+
+int fepci_char_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+ unsigned long offset = VMA_OFFSET(vma);
+ unsigned long size = vma->vm_end - vma->vm_start;
+
+ u32 virtual_address = 0;
+
+ vma->vm_flags |= VM_IO | VM_RESERVED;
+ vma->vm_ops = &fepci_vm_ops;
+ vma->vm_file = filp;
+
+ if (offset == STREAM_BUFFER_POINTER_AREA) {
+ virtual_address = stream_pointers;
+ if (virtual_address == 0) {
+ printk(KERN_WARNING "%s: mmap: internal error.\n",
+ fepci_name);
+ return -ENOMEM;
+ }
+ if (size > (1 << PAGE_SHIFT)) {
+ printk(KERN_WARNING
+ "%s: mmap: area size over range.\n", fepci_name);
+ return -EINVAL;
+ }
+ } else {
+ unsigned int page;
+
+ unsigned int card;
+ unsigned int channel;
+ unsigned int area; /* 0=rx, 1=tx */
+
+ card = (offset >> CARD_ADDRESS_SHIFT) & 0xf;
+ channel = (offset >> CHANNEL_ADDRESS_SHIFT) & 0xf;
+ area = (offset >> AREA_ADDRESS_SHIFT) & 0xf;
+ page = (offset & 0xffff); /* >> PAGE_SHIFT; */
+
+ if (area == 0) {
+ /* if there really is such card */
+ if (card < find_cnt && card_privates[card].pci_dev)
+ virtual_address =
+ (u32) card_privates[card].
+ ch_privates[channel]->rx_buffer;
+ else
+ goto INVALID;
+ } else if (area == 1) {
+ /* if there really is such card */
+ if (card < find_cnt && card_privates[card].pci_dev)
+ virtual_address =
+ (u32) card_privates[card].
+ ch_privates[channel]->tx_buffer;
+ else
+ goto INVALID;
+ } else {
+ INVALID:
+ DBG_PRINT("%s: mmap: invalid address 0x%x\n",
+ fepci_NAME, virtual_address);
+ return -EINVAL;
+ }
+ if (virtual_address == 0)
+ goto INVALID;
+ }
+
+ if (!try_module_get(THIS_MODULE))
+ return -EBUSY;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ {
+ unsigned pfn = PFN_DOWN(virt_to_phys((void *)virtual_address));
+ int error = io_remap_pfn_range(vma, vma->vm_start, pfn,
+ size, vma->vm_page_prot);
+ if (unlikely(error))
+ return error;
+ }
+ fepci_vma_open(vma);
+ return 0;
+}
+
+/* mmap operations end */
+
+/* char operations start */
+
+void fepci_copy_to_user(unsigned long to, void *from, unsigned long len,
+ int shrink)
+{
+ unsigned int i;
+ DBG_PRINT("fepci_copy_to_user\n");
+ if (shrink) {
+ for (i = 0; i < len; i += 2) {
+ put_user((((unsigned long *)from)[i / 2]) & 0xff,
+ (unsigned char *)(to + i));
+ put_user((((unsigned long *)from)[i / 2]) >> 8,
+ (unsigned char *)(to + i + 1));
+ }
+ } else {
+ for (i = 0; i < len; i += 4)
+ put_user(((unsigned long *)from)[i / 4],
+ (unsigned long *)(to + i));
+ }
+}
+
+void fepci_copy_from_user(void *to, unsigned long from, unsigned long len,
+ int enlarge)
+{
+ unsigned int i;
+ if (enlarge) {
+ for (i = 0; i < len; i += 2) {
+ unsigned char temp1;
+ unsigned char temp2;
+ get_user(temp1, (unsigned char *)(from + i));
+ get_user(temp2, (unsigned char *)(from + i + 1));
+ *((unsigned long *)(to + i * 2)) = temp1 + (temp2 << 8);
+ }
+ } else {
+ for (i = 0; i < len; i += 4)
+ get_user(((unsigned long *)to)[i / 4],
+ (unsigned long *)(from + i));
+ }
+}
+
+unsigned get_semafore(struct fepci_real_mailbox *mailbox)
+{
+ unsigned semafore = readb(&mailbox->Semafore_Mail_number);
+ DBG_PRINT("get_semafore = %x\n", semafore);
+ return semafore;
+}
+
+int set_semafore(struct fepci_real_mailbox *mailbox, unsigned semafore)
+{
+ u32 number = inl(&mailbox->Semafore_Mail_number);
+ DBG_PRINT("got number %u at %p.\n", number,
+ &mailbox->Semafore_Mail_number);
+ number = ((number & ~0xFF) | semafore) + (1 << 8);
+ DBG_PRINT
+ ("increases the mail number to %u at the same time at %p.\n",
+ number, &mailbox->Semafore_Mail_number);
+ outl(number, &mailbox->Semafore_Mail_number);
+ DBG_PRINT("set_semafore %p, %u returns 0.\n", mailbox, semafore);
+ return 0;
+}
+
+static void fepci_mailbox_timer(unsigned long data)
+{
+ int card_number = data;
+ unsigned int *saved_pid = &card_privates[card_number].ioctl_saved_pid;
+ void *ioaddr = card_privates[card_number].ioaddr;
+ struct fepci_real_mailbox *real_mailbox =
+ (struct fepci_real_mailbox *)(ioaddr + FEPCI_MAILBOX_OFFSETT);
+
+ set_semafore(real_mailbox, 0x0);
+ *saved_pid = 0;
+}
+
+int fepci_char_ioctl(struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg)
+{
+ unsigned int minor = MINOR(inode->i_rdev);
+ void *ioaddr;
+ struct fepci_real_mailbox *real_mailbox;
+ int retval = 0;
+ unsigned int *saved_pid;
+ unsigned int my_pid;
+
+ if (minor >= find_cnt || card_privates[minor].pci_dev == NULL) {
+ printk(KERN_WARNING
+ "%s: trying to access a card that does not exist.\n",
+ fepci_NAME);
+ /* if trying to access a card that does not exist */
+ return -ENXIO;
+ }
+
+ DBG_PRINT("fepci_char_ioctl minor %u.\n", minor);
+
+ if (_IOC_DIR(cmd) & _IOC_READ)
+ if (!access_ok(VERIFY_WRITE, (void *)arg, _IOC_SIZE(cmd)))
+ return -EFAULT;
+ if (_IOC_DIR(cmd) & _IOC_WRITE)
+ if (!access_ok(VERIFY_READ, (void *)arg, _IOC_SIZE(cmd)))
+ return -EFAULT;
+
+ ioaddr = card_privates[minor].ioaddr;
+ real_mailbox =
+ (struct fepci_real_mailbox *)(ioaddr + FEPCI_MAILBOX_OFFSETT);
+ saved_pid = &card_privates[minor].ioctl_saved_pid;
+ my_pid = current->pid;
+
+ switch (cmd) {
+ case FEPCI_IOCTL_STREAM_TRANSMIT_POLL:
+ /* here: arg == channel number */
+ if (arg < 0 || arg >= CHANNELS
+ || !(card_privates[minor].ch_privates[arg]->stream_on))
+ return 0x2;
+ {
+ u32 pointer = *USER_TX_S_FAKE_POINTER(minor, arg,
+ stream_pointers);
+ wait_event_interruptible((card_privates[minor].
+ stream_transmit_q)
+ ,
+ (pointer !=
+ *USER_TX_S_FAKE_POINTER
+ (minor, arg,
+ stream_pointers)));
+ return 0x1;
+ }
+ return retval;
+ case FEPCI_IOCTL_STREAM_RECEIVE_POLL:
+ /* here: arg == channel number */
+ if (arg < 0 || arg >= CHANNELS
+ || !(card_privates[minor].ch_privates[arg]->stream_on))
+ return 0x2;
+ {
+ u32 pointer = *USER_RX_S_FAKE_POINTER(minor, arg,
+ stream_pointers);
+ wait_event_interruptible((card_privates[minor].
+ stream_receive_q)
+ ,
+ (pointer !=
+ *USER_RX_S_FAKE_POINTER
+ (minor, arg,
+ stream_pointers)));
+ retval = 0x1;
+ }
+ return retval;
+ case FEPCI_IOCTL_STREAM_BOTH_POLL:
+ /* here: arg == channel number */
+ if (arg < 0 || arg >= CHANNELS
+ || !(card_privates[minor].ch_privates[arg]->stream_on))
+ return 0x2;
+ {
+ u32 temp_tx_pointer =
+ *USER_TX_S_FAKE_POINTER(minor, arg,
+ stream_pointers);
+ u32 temp_rx_pointer =
+ *USER_RX_S_FAKE_POINTER(minor, arg,
+ stream_pointers);
+
+ wait_event_interruptible((card_privates[minor].
+ stream_both_q)
+ ,
+ (temp_tx_pointer !=
+ *USER_TX_S_FAKE_POINTER
+ (minor, arg, stream_pointers))
+ || (temp_rx_pointer !=
+ *USER_RX_S_FAKE_POINTER
+ (minor, arg,
+ stream_pointers)));
+ retval = 0x1;
+ }
+ return retval;
+ case FEPCI_IOCTL_R_SHARED_MEM:
+ DBG_PRINT(" %s: ioctl read shared mem commanded.\n",
+ fepci_NAME);
+ fepci_copy_to_user(arg, ioaddr + FEPCI_SHARED_MEM_OFFSETT,
+ _IOC_SIZE(cmd), 0);
+ break;
+ case FEPCI_IOCTL_W_SHARED_MEM:
+ DBG_PRINT(" %s: ioctl write shared mem commanded.\n",
+ fepci_NAME);
+ fepci_copy_from_user(ioaddr + FEPCI_SHARED_MEM_OFFSETT,
+ arg, _IOC_SIZE(cmd), 0);
+ break;
+ case FEPCI_IOCTL_G_IDENTIFICATION:
+ DBG_PRINT(" %s: IOCTL_G_IDENTIFICATION commanded.\n",
+ fepci_NAME);
+ fepci_copy_to_user(arg,
+ ioaddr + FEPCI_IDENTIFICATION_OFFSETT,
+ _IOC_SIZE(cmd), 1);
+ break;
+ case FEPCI_IOCTL_G_FEATURES:
+ DBG_PRINT(" %s: IOCTL_G_FEATURES commanded.\n", fepci_NAME);
+ fepci_copy_to_user(arg, ioaddr + FEPCI_FEATURES_OFFSETT,
+ _IOC_SIZE(cmd), 1);
+ break;
+ case FEPCI_IOCTL_G_SETTINGS:
+ DBG_PRINT(" %s: IOCTL_G_SETTINGS commanded.\n", fepci_NAME);
+ fepci_copy_to_user(arg, ioaddr + FEPCI_SETTINGS_OFFSETT,
+ _IOC_SIZE(cmd), 1);
+ break;
+ case FEPCI_IOCTL_G_STATUS:
+ DBG_PRINT(" %s: IOCTL_G_STATUS commanded.\n", fepci_NAME);
+ fepci_copy_to_user(arg, ioaddr + FEPCI_STATUS_OFFSETT,
+ _IOC_SIZE(cmd), 1);
+ break;
+ case FEPCI_IOCTL_B_POLL:
+ DBG_PRINT(" %s: IOCTL_B_POLL commanded.\n", fepci_NAME);
+ retval = get_semafore(real_mailbox);
+ if ((retval == 0x20 || retval == 0x21 || retval == 0x40)
+ && *saved_pid != my_pid)
+ retval = 0x7;
+ del_timer_sync(&card_privates[minor].mailbox_timer);
+ card_privates[minor].mailbox_timer.expires = jiffies + 20 * HZ;
+ card_privates[minor].mailbox_timer.data = minor;
+ card_privates[minor].mailbox_timer.function =
+ &fepci_mailbox_timer;
+ add_timer(&card_privates[minor].mailbox_timer);
+ break;
+ case FEPCI_IOCTL_B_GRAB:
+ DBG_PRINT("%s: IOCTL_B_GRAB commanded.\n", fepci_NAME);
+ if ((my_pid != *saved_pid) && (*saved_pid != 0)) {
+ retval = 0x2;
+ break;
+ }
+ DBG_PRINT("%s: IOCTL_B_GRAB getting semaphore.\n", fepci_NAME);
+ if (get_semafore(real_mailbox) == 0x0) {
+ DBG_PRINT("%s: IOCTL_B_GRAB setting semaphore.\n",
+ fepci_NAME);
+ set_semafore(real_mailbox, 0x40);
+ DBG_PRINT("%s: IOCTL_B_GRAB sleeping.\n", fepci_NAME);
+ msleep(1); /* delay at least 1 millisecond */
+ DBG_PRINT
+ ("%s: IOCTL_B_GRAB getting semaphore again.\n",
+ fepci_NAME);
+ switch (get_semafore(real_mailbox)) {
+ case 0x40:
+ retval = 0x0;
+ DBG_PRINT
+ ("%s: IOCTL_B_GRAB saving pid to %p.\n",
+ fepci_NAME, saved_pid);
+ *saved_pid = my_pid;
+ DBG_PRINT
+ ("%s: IOCTL_B_GRAB deleting timer at %p.\n",
+ fepci_NAME,
+ &card_privates[minor].mailbox_timer);
+ del_timer_sync(&card_privates[minor].
+ mailbox_timer);
+ card_privates[minor].mailbox_timer.
+ expires = jiffies + 20 * HZ;
+ card_privates[minor].mailbox_timer.data = minor;
+ card_privates[minor].mailbox_timer.
+ function = &fepci_mailbox_timer;
+ add_timer(&card_privates[minor].mailbox_timer);
+ break;
+ case 0x10:
+ case 0x11:
+ case 0x80:
+ retval = 0x1;
+ break;
+ default:
+ retval = 0xff;
+ }
+ } else {
+ switch (get_semafore(real_mailbox)) {
+ case 0x10:
+ case 0x11:
+ case 0x80:
+ retval = 0x1;
+ break;
+ default:
+ retval = 0xff;
+ }
+ }
+ break;
+ case FEPCI_IOCTL_B_RELEASE:
+ DBG_PRINT(" %s: IOCTL_B_RELEASE commanded.\n", fepci_NAME);
+ if (my_pid != *saved_pid) {
+ retval = 0x2;
+ break;
+ }
+ switch (get_semafore(real_mailbox)) {
+ case 0x40:
+ case 0x20:
+ retval = 0x0;
+ set_semafore(real_mailbox, 0x0);
+ *saved_pid = 0;
+ del_timer(&card_privates[minor].mailbox_timer);
+ break;
+ case 0x21:
+ retval = 0x04;
+ break;
+ case 0x10:
+ case 0x11:
+ case 0x80:
+ retval = 0x1;
+ break;
+ default:
+ retval = 0xff;
+ }
+ break;
+ case FEPCI_IOCTL_B_S_CMAIL:
+ DBG_PRINT(" %s: IOCTL_B_S_CMAIL commanded.\n", fepci_NAME);
+ if (my_pid != *saved_pid) {
+ retval = 0x2;
+ break;
+ }
+ switch (get_semafore(real_mailbox)) {
+ case 0x40:
+ case 0x20:
+ case 0x21:
+ /* copy the mailbox */
+ fepci_copy_from_user(ioaddr +
+ FEPCI_MAILBOX_OFFSETT + 4,
+ arg + 2, _IOC_SIZE(cmd) - 2, 1);
+ /* semafore -> 10 */
+ set_semafore(real_mailbox, 0x10);
+ retval = 0x0;
+
+ del_timer_sync(&card_privates[minor].mailbox_timer);
+ card_privates[minor].mailbox_timer.expires =
+ jiffies + 20 * HZ;
+ card_privates[minor].mailbox_timer.data = minor;
+ card_privates[minor].mailbox_timer.function =
+ &fepci_mailbox_timer;
+ add_timer(&card_privates[minor].mailbox_timer);
+
+ break;
+
+ case 0x10:
+ case 0x11:
+ case 0x80:
+ retval = 0x1;
+ break;
+ case 0x0:
+ retval = 0x3;
+ break;
+ default:
+ retval = 0xff;
+ }
+ break;
+ case FEPCI_IOCTL_B_S_QMAIL:
+ DBG_PRINT(" %s: IOCTL_B_S_QMAIL commanded.\n", fepci_NAME);
+ if (my_pid != *saved_pid) {
+ retval = 0x2;
+ break;
+ }
+ switch (get_semafore(real_mailbox)) {
+ case 0x40:
+ case 0x20:
+ case 0x21:
+ /* copy the mailbox; */
+ fepci_copy_from_user(ioaddr +
+ FEPCI_MAILBOX_OFFSETT + 4,
+ arg + 2, _IOC_SIZE(cmd) - 2, 1);
+ /* semafore -> 11 */
+ set_semafore(real_mailbox, 0x11);
+ retval = 0x0;
+
+ del_timer_sync(&card_privates[minor].mailbox_timer);
+ card_privates[minor].mailbox_timer.expires =
+ jiffies + 20 * HZ;
+ card_privates[minor].mailbox_timer.data = minor;
+ card_privates[minor].mailbox_timer.function =
+ &fepci_mailbox_timer;
+ add_timer(&card_privates[minor].mailbox_timer);
+
+ break;
+
+ case 0x10:
+ case 0x11:
+ case 0x80:
+ retval = 0x1;
+ break;
+ case 0x0:
+ retval = 0x3;
+ break;
+ default:
+ retval = 0xff;
+ }
+ break;
+ case FEPCI_IOCTL_B_G_MAIL:
+ DBG_PRINT(" %s: IOCTL_B_G_MAIL commanded.\n", fepci_NAME);
+ if (my_pid != *saved_pid) {
+ retval = 0x2;
+ } else {
+ switch (get_semafore(real_mailbox)) {
+ case 0x10:
+ case 0x11:
+ case 0x80:
+ retval = 0x1;
+ break;
+ case 0x40:
+ case 0x20:
+ case 0x21:
+ retval = 0x0;
+ fepci_copy_to_user(arg,
+ ioaddr +
+ FEPCI_MAILBOX_OFFSETT,
+ _IOC_SIZE(cmd), 1);
+
+ del_timer_sync(&card_privates[minor].
+ mailbox_timer);
+ card_privates[minor].mailbox_timer.
+ expires = jiffies + 20 * HZ;
+ card_privates[minor].mailbox_timer.data = minor;
+ card_privates[minor].mailbox_timer.
+ function = &fepci_mailbox_timer;
+ add_timer(&card_privates[minor].mailbox_timer);
+
+ break;
+ case 0x0:
+ retval = 0x3;
+ break;
+ default:
+ retval = 0xff;
+ }
+ }
+ if (retval != 0) {
+ static unsigned char seven = 7;
+ /* copy four lowest bytes from the mailbox */
+ fepci_copy_to_user(arg,
+ ioaddr + FEPCI_MAILBOX_OFFSETT,
+ 4, 1);
+ /* lowest byte = 0x7 */
+ __put_user(arg, &seven);
+ }
+ break;
+ case FEPCI_IOCTL_ALARM_MANAGER:
+ DBG_PRINT(" %s: IOCTL_ALARM_MANAGER commanded.\n", fepci_NAME);
+ interruptible_sleep_on(&
+ (card_privates[minor].
+ alarm_manager_wait_q));
+ return retval;
+ default:
+ DBG_PRINT(" %s: Unknown ioctl command 0x%x.\n", fepci_NAME,
+ cmd);
+ return -ENOTTY;
+ }
+ return retval;
+}
+
+ssize_t fepci_char_read(struct file *filp, char *buf, size_t count,
+ loff_t *f_pos)
+{
+ DBG_PRINT("fepci_char_read\n");
+ if (count > 1)
+ count = 1;
+ if (copy_to_user(buf, "\n", count))
+ return -EFAULT;
+ return count;
+}
+
+static int fepci_register_char_device(void)
+{
+ int error =
+ register_chrdev(0 /* dynamic */ , fepci_name, &fepci_char_fops);
+ if (error < 0)
+ printk(KERN_WARNING
+ "%s: unable to register char device.\n", fepci_NAME);
+ else
+ DBG_PRINT("%s: registered char device, major:0x%x.\n",
+ fepci_NAME, error);
+ return error;
+}
+
+void fepci_unregister_char_device(void)
+{
+ unregister_chrdev(major, fepci_name);
+}
+
+/* char operations end */
+
+/* stream operations start */
+
+static irqreturn_t fepci_stream_interrupt(int irq, void *dev_instance);
+static int fepci_stream_close(struct net_device *dev);
+
+static int fepci_stream_open(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ unsigned tx_pages, rx_pages, tx_order, rx_order;
+ unsigned page_number;
+ unsigned int i;
+
+ down_write(&fp->this_card_priv->semaphore);
+ if (fp->in_eth_mode) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: Interface is in Ethernet mode, "
+ "cannot open stream interface.\n", fepci_NAME);
+ BUSY:
+ return -EBUSY;
+ }
+ if (fp->in_stream_mode) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: Interface is already in stream mode, "
+ "cannot open stream interface.\n", fepci_NAME);
+ goto BUSY;
+ }
+
+ if (fp->this_card_priv->pci_dev == NULL) {
+ up_write(&fp->this_card_priv->semaphore);
+ return -ENXIO;
+ }
+
+ fp->bufsize = 1 << fp->bufsize_order;
+
+ if (fp->fake_unit_sz_order < 5) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: Unit size has to be at least 32 Bytes.\n",
+ fepci_NAME);
+ INVALID:
+ return (-EINVAL);
+ }
+
+ if (fp->fake_unit_sz_order >= fp->bufsize_order) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: Bufsize has to be greater than unit size.\n",
+ fepci_NAME);
+ goto INVALID;
+ }
+
+ if (fp->fake_unit_sz_order >= MAX_UNIT_SZ_ORDER) {
+ fp->unit_sz_order = MAX_UNIT_SZ_ORDER;
+ } else {
+ fp->unit_sz_order = fp->fake_unit_sz_order;
+ }
+
+ fp->fake_unit_sz = 1 << fp->fake_unit_sz_order;
+ fp->unit_sz = 1 << fp->unit_sz_order;
+ fp->units = 1 << (fp->bufsize_order - fp->unit_sz_order);
+ fp->fake_units = 1 << (fp->bufsize_order - fp->fake_unit_sz_order);
+
+ /* reserve memory */
+ if (fp->bufsize_order < PAGE_SHIFT) {
+ tx_order = rx_order = 0;
+ tx_pages = rx_pages = 1;
+ } else {
+ tx_order = fp->bufsize_order - PAGE_SHIFT;
+ tx_pages = 1 << tx_order;
+ rx_order = tx_order + 1;
+ rx_pages = 1 << rx_order;
+ }
+ fp->in_stream_mode = 1;
+ fp->tx_buffer = (u32 *) __get_dma_pages(GFP_KERNEL, tx_order);
+ if (!fp->tx_buffer)
+ goto NO_MEMORY;
+ fp->rx_buffer = (u32 *) __get_dma_pages(GFP_KERNEL, rx_order);
+ if (!fp->rx_buffer) {
+ NO_MEMORY:
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: unable to allocate memory for buffers.\n",
+ fepci_NAME);
+ fepci_stream_close(dev);
+ return (-ENOMEM);
+ }
+
+ for (page_number = 0; page_number < rx_pages; page_number++)
+ /* make pages reserved to allow remappping pages
+ with io_remap_pfn_range */
+ SetPageReserved(virt_to_page
+ ((unsigned long)fp->rx_buffer +
+ (page_number << PAGE_SHIFT)));
+ for (page_number = 0; page_number < tx_pages; page_number++)
+ /* make pages reserved to allow remappping pages
+ with io_remap_pfn_range */
+ SetPageReserved(virt_to_page
+ ((unsigned long)fp->tx_buffer +
+ (page_number << PAGE_SHIFT)));
+
+ for (i = 0; i < (fp->bufsize) / 4; i++)
+ fp->tx_buffer[i] = 0xffffffff;
+
+ /* + fp->channel_number; */
+ *USER_RX_S_POINTER(fp->this_card_priv->card_number, fp->channel_number,
+ stream_pointers) = 0;
+ /* + fp->channel_number; */
+ *USER_TX_S_POINTER(fp->this_card_priv->card_number, fp->channel_number,
+ stream_pointers) = 0;
+ /* + fp->channel_number; */
+ *USER_RX_S_FAKE_POINTER(fp->this_card_priv->card_number,
+ fp->channel_number, stream_pointers) = 0;
+ /* + fp->channel_number; */
+ *USER_TX_S_FAKE_POINTER(fp->this_card_priv->card_number,
+ fp->channel_number, stream_pointers) = 0;
+
+ DBG_PRINT("%s: Bufsize is 0x%x.\n", fepci_NAME, fp->bufsize);
+ DBG_PRINT("%s: Unit_size is 0x%x.\n", fepci_NAME, fp->unit_sz);
+ DBG_PRINT("%s: Number of units is 0x%x.\n", fepci_NAME, fp->units);
+
+ DBG_PRINT("%s: Fake_unit_size is 0x%x.\n", fepci_NAME,
+ fp->fake_unit_sz);
+ DBG_PRINT("%s: Number of fake units is 0x%x.\n", fepci_NAME,
+ fp->fake_units);
+
+ /* init ring buffers */
+ for (i = 0; i < MAX_RX_UNITS; i++)
+ fp->rx_unit[i] =
+ (u32 *) ((u32) (fp->rx_buffer) + (fp->unit_sz * i));
+ for (i = 0; i < MAX_TX_UNITS; i++)
+ fp->tx_unit[i] =
+ (u32 *) ((u32) (fp->tx_buffer) + (fp->unit_sz * i));
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ outl(0, &fp->rx_desc[i].desc_a);
+ outl(0, &fp->rx_desc[i].desc_b);
+ }
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ outl(0, &fp->tx_desc[i].desc_a);
+ outl(0, &fp->tx_desc[i].desc_b);
+ }
+
+ up_write(&fp->this_card_priv->semaphore);
+ return 0;
+}
+
+static int fepci_stream_start(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ unsigned i;
+ down_write(&fp->this_card_priv->semaphore);
+
+ if (fp->in_stream_mode == 0) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: Interface is not in stream mode, "
+ "streaming cannot be started.\n", fepci_NAME);
+ return (-EBUSY);
+ }
+ if (fp->stream_on) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: Streaming is already on, "
+ "streaming cannot be started.\n", fepci_NAME);
+ return (-EBUSY);
+ }
+
+ {
+ /* reserve irq */
+ int error = request_irq(dev->irq, &fepci_stream_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (error) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: unable to allocate IRQ %d, error 0x%x\n",
+ fepci_NAME, dev->irq, error);
+ return -ENOMEM;
+ }
+ }
+
+ fp->stream_on = 1;
+
+ /* sending &receiving on, start from the beginning of the buffer */
+ fp->cur_tx_unit = 0;
+ fp->cur_rx_unit = 0;
+ fp->cur_tx = 0;
+ fp->cur_rx = 0;
+
+ /* all the descriptors ready to go: */
+ for (i = 0; i < min(RX_RING_SIZE, TX_RING_SIZE); i++) {
+ u32 bus_address = pci_map_single(fp->this_card_priv->pci_dev,
+ fp->
+ rx_unit[(fp->cur_rx_unit +
+ i) % fp->units],
+ fp->unit_sz,
+ PCI_DMA_FROMDEVICE);
+ outl(bus_address,
+ &fp->
+ rx_desc[(fp->cur_rx + i) & (RX_RING_SIZE - 1)].desc_a);
+ if (unlikely(pci_dma_mapping_error(bus_address)))
+ printk(KERN_WARNING
+ "%s: failed to map DMA buffer.\n", fepci_NAME);
+ else {
+ if (!
+ (inl
+ (&fp->
+ rx_desc[(fp->cur_rx + i) & (RX_RING_SIZE -
+ 1)].
+ desc_b) & enable_transfer))
+ outl(enable_transfer,
+ &fp->rx_desc[(fp->cur_rx + i) %
+ RX_RING_SIZE].desc_b);
+ }
+ bus_address =
+ pci_map_single(fp->this_card_priv->pci_dev,
+ fp->tx_unit[(fp->cur_tx_unit + i) %
+ fp->units], fp->unit_sz,
+ PCI_DMA_TODEVICE);
+ outl(bus_address,
+ &fp->
+ tx_desc[(fp->cur_tx + i) & (TX_RING_SIZE - 1)].desc_a);
+ if (unlikely(pci_dma_mapping_error(bus_address)))
+ printk(KERN_WARNING
+ "%s: failed to map DMA buffer.\n", fepci_NAME);
+ else {
+ if (!
+ (inl
+ (&fp->
+ tx_desc[(fp->cur_tx + i) & (TX_RING_SIZE -
+ 1)].
+ desc_b) & enable_transfer))
+ outl(enable_transfer |
+ (fp->unit_sz & frame_length),
+ &fp->
+ tx_desc[(fp->cur_tx +
+ i) & (TX_RING_SIZE - 1)].desc_b);
+ }
+ }
+
+ /* irq on */
+ set_int_mask(fp->channel_number,
+ MaskFrameReceived | MaskFrameTransmitted |
+ MaskRxFifoError | MaskRxFrameDroppedError |
+ MaskTxFifoError, fp->this_card_priv);
+ {
+ void *ioaddr = (void *)dev->base_addr;
+ /* Start Rx and Tx channels */
+ outl(Receive_enable |
+ (Rx_fifo_threshold & RX_FIFO_THRESHOLD_STREAM_MODE),
+ (void *)(ioaddr + fp->reg_rxctrl));
+ outl((Transmit_enable |
+ (Tx_desc_threshold &
+ (TX_DESC_THRESHOLD_STREAM_MODE << 8)) |
+ (Tx_fifo_threshold & TX_FIFO_THRESHOLD_STREAM_MODE)),
+ (void *)(ioaddr + fp->reg_txctrl));
+ }
+ up_write(&fp->this_card_priv->semaphore);
+
+ return 0;
+}
+
+static int fepci_stream_stop(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ void *ioaddr = (void *)dev->base_addr;
+ down_write(&fp->this_card_priv->semaphore);
+ if (fp->in_stream_mode == 0) {
+ up_write(&fp->this_card_priv->semaphore);
+ return (1);
+ }
+ fp->stream_on = 0;
+ /* Stop Rx and Tx channels. */
+ outl(0x0, (void *)(ioaddr + fp->reg_rxctrl));
+ outl(0x0, (void *)(ioaddr + fp->reg_txctrl));
+
+ /* Disable interrupts by clearing the interrupt mask. */
+ set_int_mask(fp->channel_number, 0x0, fp->this_card_priv);
+
+ /* unregister irq */
+ free_irq(dev->irq, dev);
+
+ {
+ unsigned i = min(RX_RING_SIZE, TX_RING_SIZE) - 1;
+ do {
+ u32 bus_address;
+ if (likely
+ (!pci_dma_mapping_error
+ (bus_address = inl(&fp->rx_desc[i].desc_a))))
+ pci_unmap_single(fp->this_card_priv->
+ pci_dev, bus_address,
+ fp->unit_sz,
+ PCI_DMA_FROMDEVICE);
+ if (likely
+ (!pci_dma_mapping_error
+ (bus_address = inl(&fp->tx_desc[i].desc_a))))
+ pci_unmap_single(fp->this_card_priv->
+ pci_dev, bus_address,
+ fp->unit_sz, PCI_DMA_TODEVICE);
+ }
+ while (i--);
+ }
+
+ up_write(&fp->this_card_priv->semaphore);
+ return 0;
+}
+
+static int fepci_stream_close(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ unsigned rx_pages, tx_pages, rx_order, tx_order;
+
+ if (fepci_stream_stop(dev))
+ return -ENODEV;
+ down_write(&fp->this_card_priv->semaphore);
+ if (!(fp->in_stream_mode)) {
+ up_write(&fp->this_card_priv->semaphore);
+ return -ENODEV;
+ }
+ /* release memory */
+ if (fp->bufsize_order < PAGE_SHIFT) {
+ tx_order = rx_order = 0;
+ tx_pages = rx_pages = 1;
+ } else {
+ rx_order = (int)((fp->bufsize_order) - PAGE_SHIFT + 1);
+ rx_pages = 1 << rx_order;
+ tx_order = (int)((fp->bufsize_order) - PAGE_SHIFT);
+ tx_pages = 1 << tx_order;
+ }
+ if (fp->rx_buffer) {
+ unsigned page_number;
+ for (page_number = 0; page_number < rx_pages; page_number++)
+ /* turn pages back to non-reserved */
+ ClearPageReserved(virt_to_page
+ ((unsigned long)fp->rx_buffer +
+ (page_number << PAGE_SHIFT)));
+ free_pages((u32) fp->rx_buffer, rx_order);
+ fp->rx_buffer = NULL;
+ }
+ if (fp->tx_buffer) {
+ unsigned page_number;
+ for (page_number = 0; page_number < tx_pages; page_number++)
+ /* turn pages back to non-reserved */
+ ClearPageReserved(virt_to_page
+ ((unsigned long)fp->tx_buffer +
+ (page_number << PAGE_SHIFT)));
+ free_pages((u32) fp->tx_buffer, tx_order);
+ fp->tx_buffer = NULL;
+ }
+
+ fp->in_stream_mode = 0;
+ up_write(&fp->this_card_priv->semaphore);
+ return 0;
+}
+
+static irqreturn_t fepci_stream_interrupt(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ struct fepci_ch_private *fp = dev->priv;
+ void *ioaddr = (void *)dev->base_addr;
+ u32 intr_status = get_int_status(fp->channel_number, ioaddr);
+ bool fifo, dropped;
+ unsigned int temp_rx;
+ unsigned int temp_rx_unit;
+ unsigned int temp_tx;
+ unsigned int temp_tx_unit;
+
+ clear_int(fp->channel_number, intr_status, ioaddr);
+
+ /* debugging */
+ fp->interrupts_stream++;
+ fifo = (intr_status & IntrRxFifoError) != 0;
+ dropped = (intr_status & IntrRxFrameDroppedError) != 0;
+ fp->int_err_table_stream[fifo][dropped]++;
+ if (intr_status & IntrFrameReceived)
+ fp->rx_interrupts_stream++;
+ if (intr_status & IntrFrameTransmitted)
+ fp->tx_interrupts_stream++;
+ if (fifo)
+ fp->rx_int_fifo_err_stream++;
+ if (dropped)
+ fp->rx_int_frame_dropped_err_stream++;
+ if (intr_status & IntrTxFifoError)
+ fp->tx_int_fifo_err_stream++;
+ /* first update cur_rx, and do stuff if it has moved
+ (+ packets have been received) */
+ {
+ temp_rx = fp->cur_rx;
+ /* has been received */
+ while ((inl(&fp->rx_desc[fp->cur_rx].desc_b) &
+ transfer_not_done) == 0
+ /* stop if made one round */
+ && temp_rx != ((fp->cur_rx + 1) & (RX_RING_SIZE - 1))) {
+ u32 bus_address;
+ if (likely(!pci_dma_mapping_error(bus_address =
+ inl(&fp->
+ rx_desc[fp->
+ cur_rx].
+ desc_a))))
+ pci_unmap_single(fp->this_card_priv->
+ pci_dev, bus_address,
+ fp->unit_sz,
+ PCI_DMA_FROMDEVICE);
+ fp->cur_rx = (fp->cur_rx + 1) & (RX_RING_SIZE - 1);
+ fp->cur_rx_unit = (fp->cur_rx_unit + 1);
+ fp->cur_rx_unit *= fp->cur_rx_unit < fp->units;
+
+ *USER_RX_S_POINTER(fp->this_card_priv->
+ card_number,
+ fp->channel_number,
+ stream_pointers) = fp->cur_rx_unit;
+ *USER_RX_S_FAKE_POINTER(fp->this_card_priv->
+ card_number,
+ fp->channel_number,
+ stream_pointers) =
+ fp->cur_rx_unit * fp->unit_sz / fp->fake_unit_sz;
+ wake_up_interruptible(&
+ (fp->this_card_priv->
+ stream_receive_q));
+ wake_up_interruptible(&
+ (fp->this_card_priv->
+ stream_both_q));
+ }
+ }
+ /* from the first uninitialized descriptor to cur_rx */
+ temp_rx = (fp->cur_rx + 1) & (RX_RING_SIZE - 1);
+ temp_rx_unit = (fp->cur_rx_unit + 1);
+ temp_rx_unit *= temp_rx_unit < fp->units;
+
+ while (temp_rx != fp->cur_rx) {
+ u32 desc_b = inl(&fp->rx_desc[temp_rx].desc_b);
+ if ((desc_b & transfer_not_done) == 0) {
+ bool fifo = (desc_b & fifo_error) != 0;
+ bool size = (desc_b & size_error) != 0;
+ bool crc = (desc_b & crc_error) != 0;
+ bool octet = (desc_b & octet_error) != 0;
+ bool line = (desc_b & line_error) != 0;
+ u32 length = desc_b & frame_length;
+ u32 bus_address;
+ /* update debug counters */
+ fp->rx_desc_err_table_stream[fifo]
+ [size]
+ [crc]
+ [octet]
+ [line]++;
+ if (length == 0) {
+ fp->rx_packets_of_size_0_stream++;
+ } else if (length == 1) {
+ fp->rx_packets_of_size_1_stream++;
+ } else if (length == 2) {
+ fp->rx_packets_of_size_2_stream++;
+ } else if (length == 3) {
+ fp->rx_packets_of_size_3_stream++;
+ } else if (length < 8) {
+ fp->rx_packets_of_size_4_7_stream++;
+ } else if (length < 16) {
+ fp->rx_packets_of_size_8_15_stream++;
+ } else if (length < 32) {
+ fp->rx_packets_of_size_16_31_stream++;
+ }
+ if (fifo) {
+ fp->rx_desc_fifo_err_stream++;
+ } else if (size) {
+ fp->rx_desc_size_err_stream++;
+ } else if (crc) {
+ fp->rx_desc_crc_err_stream++;
+ } else if (octet) {
+ fp->rx_desc_octet_err_stream++;
+ } else if (line) {
+ fp->rx_desc_line_err_stream++;
+ }
+ /* initialize the descriptor for transfer */
+ bus_address =
+ pci_map_single(fp->this_card_priv->pci_dev,
+ fp->rx_unit[temp_rx_unit],
+ fp->unit_sz, PCI_DMA_FROMDEVICE);
+ outl(bus_address, &fp->rx_desc[temp_rx].desc_a);
+ if (likely(!pci_dma_mapping_error(bus_address)))
+ outl(enable_transfer,
+ &fp->rx_desc[temp_rx].desc_b);
+ else
+ printk(KERN_WARNING
+ "%s: failed to map DMA for reception.\n",
+ fepci_NAME);
+ }
+ temp_rx = (temp_rx + 1) & (RX_RING_SIZE - 1);
+ temp_rx_unit = (temp_rx_unit + 1);
+ temp_rx_unit *= temp_rx_unit < fp->units;
+ }
+
+ /* first update cur_tx, and do stuff if it has moved
+ (+ packets have been transmitted) */
+ {
+ temp_tx = fp->cur_tx;
+ /* has been transmitted */
+ while ((inl(&fp->tx_desc[fp->cur_tx].desc_b) &
+ transfer_not_done) == 0
+ /* stop if made one round */
+ && temp_tx != ((fp->cur_tx + 1) & (TX_RING_SIZE - 1))) {
+ u32 bus_address;
+ if (likely(!pci_dma_mapping_error(bus_address =
+ inl(&fp->
+ tx_desc[fp->
+ cur_tx].
+ desc_a))))
+ pci_unmap_single(fp->this_card_priv->
+ pci_dev, bus_address,
+ fp->unit_sz, PCI_DMA_TODEVICE);
+ fp->cur_tx = (fp->cur_tx + 1) & (TX_RING_SIZE - 1);
+ fp->cur_tx_unit = (fp->cur_tx_unit + 1);
+ fp->cur_tx_unit *= fp->cur_tx_unit < fp->units;
+
+ *USER_TX_S_POINTER(fp->this_card_priv->
+ card_number,
+ fp->channel_number,
+ stream_pointers) = fp->cur_tx_unit;
+ *USER_TX_S_FAKE_POINTER(fp->this_card_priv->
+ card_number,
+ fp->channel_number,
+ stream_pointers) =
+ fp->cur_tx_unit * fp->unit_sz / fp->fake_unit_sz;
+ wake_up_interruptible(&
+ (fp->this_card_priv->
+ stream_transmit_q));
+ wake_up_interruptible(&
+ (fp->this_card_priv->
+ stream_both_q));
+ }
+ }
+ /* from the first uninitialized descriptor to cur_tx */
+ temp_tx = (fp->cur_tx + 1) & (TX_RING_SIZE - 1);
+ temp_tx_unit = (fp->cur_tx_unit + 1);
+ temp_tx_unit *= temp_tx_unit < fp->units;
+
+ while (temp_tx != fp->cur_tx) {
+ u32 desc_b = inl(&fp->tx_desc[temp_tx].desc_b);
+ if ((desc_b & transfer_not_done) == 0) {
+ u32 bus_address;
+ /* update debug counters */
+ if (desc_b & fifo_error)
+ fp->tx_desc_fifo_err_stream++;
+ /* initialize the desctiptor for transfer */
+ bus_address =
+ pci_map_single(fp->this_card_priv->pci_dev,
+ fp->tx_unit[temp_tx_unit],
+ fp->unit_sz, PCI_DMA_TODEVICE);
+ outl(bus_address, &fp->tx_desc[temp_tx].desc_a);
+ if (likely(!pci_dma_mapping_error(bus_address)))
+ outl(enable_transfer |
+ (fp->unit_sz & frame_length),
+ &fp->tx_desc[temp_tx].desc_b);
+ else
+ printk(KERN_WARNING
+ "%s: failed to map tranmission DMA.\n",
+ fepci_NAME);
+ }
+ temp_tx = (temp_tx + 1) & (TX_RING_SIZE - 1);
+ temp_tx_unit = (temp_tx_unit + 1);
+ temp_tx_unit *= temp_tx_unit < fp->units;
+ }
+
+ return IRQ_HANDLED;
+}
+
+/* stream operations end */
+
+int fepci_rebuild_header(struct sk_buff *skb)
+{
+ DBG_PRINT("fepci_rebuild_header\n");
+ return 0;
+}
+
+static inline u16 get_common_reg_word(void *ioaddr, unsigned long offsett)
+{
+ u16 word;
+ DBG_PRINT("get_common_reg_word ioaddr %p, offsett %lu\n", ioaddr,
+ offsett);
+ __clear_bit(0, &offsett);
+ DBG_PRINT("get_common_reg_word %p\n",
+ ioaddr + FEPCI_IDENTIFICATION_OFFSETT + (offsett << 1));
+ word = le16_to_cpu(readw
+ (ioaddr + FEPCI_IDENTIFICATION_OFFSETT +
+ (offsett << 1)));
+ DBG_PRINT("get_common_reg_word %p: %hu\n",
+ ioaddr + FEPCI_IDENTIFICATION_OFFSETT + (offsett << 1), word);
+ return word;
+}
+
+static irqreturn_t alarm_manager_interrupt(int irq, void *pointer)
+{
+ struct fepci_card_private *card_private = pointer;
+ void *ioaddr = card_private->ioaddr;
+ /* check int status */
+ if (inl((void *)(ioaddr + reg_custom)) & AM_interrupt_status) {
+ /* clear int (zero everything, but the mask bit) */
+ outl(inl((void *)(ioaddr + reg_custom)) &
+ AM_interrupt_mask, (void *)(ioaddr + reg_custom));
+ /* wake queue */
+ wake_up(&(card_private->alarm_manager_wait_q));
+ }
+
+ return IRQ_HANDLED;
+}
+
+#ifdef FEPCI_POINT_TO_POINT
+static int is_ptp_interface(struct net_device *dev)
+{
+ char **p_ptp_if_name = retina_ptp_interfaces;
+ unsigned int i = interfaces;
+ while (i > 0 && *p_ptp_if_name != NULL) {
+ if (!strncmp(dev->name, *p_ptp_if_name, sizeof(dev->name))) {
+ return 1;
+ } else {
+ }
+ p_ptp_if_name++;
+ i--;
+ }
+ return 0;
+}
+#endif /* FEPCI_POINT_TO_POINT */
+
+static int __devinit fepci_init_one(struct pci_dev *pdev,
+ const struct pci_device_id *ent)
+{
+ struct net_device *dev = NULL;
+ struct fepci_ch_private *fp = NULL;
+ int chip_idx = ent->driver_data;
+ int drv_flags = pci_id_tbl[chip_idx].drv_flags;
+ int i = pci_enable_device(pdev);
+ u32 j;
+ resource_size_t real_ioaddr;
+ void *ioaddr;
+ unsigned position;
+
+ if (i) {
+ printk(KERN_WARNING "%s: pci_enable_device returned %x.\n",
+ fepci_NAME, i);
+ return i;
+ }
+
+ pci_set_master(pdev);
+
+ i = pci_request_regions(pdev, (char *)fepci_name);
+ if (i) {
+ printk(KERN_WARNING
+ "%s: pci_request_regions returned %x.\n", fepci_NAME, i);
+ pci_disable_device(pdev);
+ return i;
+ }
+
+ /* make sure above region is MMIO */
+ if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
+ printk(KERN_WARNING "%s: region not MMIO region\n", fepci_NAME);
+ goto err_1;
+ }
+
+ j = pci_resource_len(pdev, 0);
+ if (j < FEPCI_SIZE) {
+ printk(KERN_WARNING
+ "%s: resource length %u less than required %u.\n",
+ fepci_NAME, j, FEPCI_SIZE);
+ goto err_1;
+ }
+
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+ printk(KERN_WARNING "%s: no suitable DMA available.\n",
+ fepci_NAME);
+ goto err_1;
+ }
+
+ real_ioaddr = pci_resource_start(pdev, 0);
+ DBG_PRINT("pci_resource_start %lu.\n", real_ioaddr);
+ ioaddr = ioremap_nocache(real_ioaddr, FEPCI_SIZE);
+ DBG_PRINT("ioremap_nocache = %p.\n", ioaddr);
+ if (!ioaddr) {
+ printk(KERN_WARNING "%s: remapping failed.\n", fepci_NAME);
+ goto err_1_5;
+ }
+ position = 0;
+ for (; position < MAX_DEVICES; position++) {
+ down_write(&card_privates[position].semaphore);
+ if (card_privates[position].pci_dev == NULL) {
+ card_privates[position].pci_dev = pdev;
+ if (position == find_cnt)
+ find_cnt++;
+ goto FOUND;
+ }
+ up_write(&card_privates[position].semaphore);
+ }
+ printk(KERN_WARNING
+ "%s: no space to inialize device #%u.\n",
+ fepci_NAME, MAX_DEVICES + 1);
+ goto err_2;
+ FOUND:
+ card_privates[position].card_number = position;
+ card_privates[position].ioaddr = ioaddr;
+ card_privates[position].pci_dev = pdev;
+ DBG_PRINT("fillregisterswith_00 %p.\n", ioaddr);
+ fillregisterswith_00(ioaddr);
+
+ fepci_proc_init_card(position, (void *)&(card_privates[position]));
+
+ init_waitqueue_head(&(card_privates[position].alarm_manager_wait_q));
+ init_waitqueue_head(&(card_privates[position].stream_transmit_q));
+ init_waitqueue_head(&(card_privates[position].stream_receive_q));
+ init_waitqueue_head(&(card_privates[position].stream_both_q));
+
+ init_timer(&card_privates[position].mailbox_timer);
+
+ DBG_PRINT("request_irq %d, %s.\n", pdev->irq, fepci_alarm_manager_name);
+ i = request_irq(pdev->irq, &alarm_manager_interrupt,
+ IRQF_SHARED,
+ fepci_alarm_manager_name, &card_privates[position]);
+ if (i) {
+ up_write(&card_privates[position].semaphore);
+ printk(KERN_WARNING
+ "%s: unable to allocate IRQ %d alarm manager: 0x%x\n",
+ fepci_NAME, pdev->irq, i);
+ goto err_2;
+ }
+ DBG_PRINT("alarm manager int on %p.\n", (void *)(ioaddr + reg_custom));
+ outl(AM_interrupt_mask, (void *)(ioaddr + reg_custom));
+ /* alarm manager int on */
+
+ for (j = 0; j < CHANNELS; j++) {
+ DBG_PRINT("alloc_etherdev %u.\n", j);
+ dev = alloc_etherdev(sizeof(struct fepci_ch_private));
+ if (!dev) {
+ printk(KERN_WARNING
+ "%s: cannot allocate ethernet device\n",
+ fepci_NAME);
+ continue;
+ }
+
+ fp = dev->priv;
+ fp->minor = position; /* * CHANNELS + j; */
+ /* name := xxx01..xxxnn */
+ memcpy(dev->name, fepci_netdev_name, 6);
+ /* dev->name[3]= j+0x30; channel number -> ascii */
+ /* minor number -> ascii */
+ dev->name[4] = ((fp->minor * CHANNELS + j) % 10) + 0x30;
+ /* minor number -> ascii */
+ dev->name[3] = ((fp->minor * CHANNELS + j) / 10) + 0x30;
+
+ SET_MODULE_OWNER(dev);
+ DBG_PRINT("clear_int %u, %x, %p.\n", j, IntrAllInts, ioaddr);
+ clear_int(j, IntrAllInts, ioaddr);
+ DBG_PRINT("ether_setup %p.\n", dev);
+ ether_setup(dev);
+
+ /* HW_ADDR: 00:rnd:rnd:rnd:rnd:05 */
+ dev->dev_addr[0] = 0;
+ get_random_bytes(&(dev->dev_addr[1]), 4);
+ dev->dev_addr[5] = 5;
+ /* HW_ADDR is got using the mailbox: */
+ {
+ struct fepci_real_mailbox *real_mailbox =
+ (struct fepci_real_mailbox *)
+ (ioaddr + FEPCI_MAILBOX_OFFSETT);
+ unsigned long waituntil;
+
+ set_semafore(real_mailbox, 0x40);
+ outl(0x1 /*size */ +
+ (0x8 << 8) /* get mac command */ ,
+ &real_mailbox->Size_Command);
+ set_semafore(real_mailbox, 0x11);
+
+ waituntil = jiffies + HZ;
+ while (time_before(jiffies, waituntil) &&
+ get_semafore(real_mailbox) != 0x20) {
+ DBG_PRINT("jiffies %lu < waituntil %lu.\n",
+ jiffies, waituntil);
+ msleep(0);
+ }
+
+ /* 14.5.2004 JT: Made this safer. */
+ if (get_semafore(real_mailbox) == 0x20) {
+ dev->dev_addr[5] =
+ readb(&real_mailbox->Data[0 + 3 * j]);
+ dev->dev_addr[4] =
+ readb(((u8 *) & real_mailbox->
+ Data[0 + 3 * j]) + 1);
+ dev->dev_addr[3] =
+ readb(&real_mailbox->Data[1 + 3 * j]);
+ dev->dev_addr[2] =
+ readb(((u8 *) & real_mailbox->
+ Data[1 + 3 * j]) + 1);
+ dev->dev_addr[1] =
+ readb(&real_mailbox->Data[2 + 3 * j]);
+ dev->dev_addr[0] =
+ readb(((u8 *) & real_mailbox->
+ Data[2 + 3 * j]) + 1);
+ }
+
+ set_semafore(real_mailbox, 0x0);
+ }
+ dev->addr_len = 6;
+
+ dev->base_addr = (unsigned long)ioaddr;
+ dev->irq = pdev->irq;
+ DBG_PRINT("alarm pci_set_drvdata %p, %p.\n", pdev, dev);
+ if (j == 0)
+ pci_set_drvdata(pdev, dev);
+
+ fp->drv_flags = drv_flags;
+
+ fp->rx_desc =
+ (struct fepci_desc *)(dev->base_addr + first_rx_desc +
+ j * to_next_ch_rx_desc);
+ fp->tx_desc =
+ (struct fepci_desc *)(dev->base_addr + first_tx_desc +
+ j * to_next_ch_tx_desc);
+
+ fp->channel_number = j; /*channel in this device */
+ fp->this_dev = dev;
+
+ fp->this_card_priv = &card_privates[position];
+ fp->this_card_priv->ch_privates[j] = fp;
+
+ fp->cur_tx = 0;
+
+ fp->in_stream_mode = 0;
+ fp->in_eth_mode = 0;
+
+ fp->reg_rxctrl = reg_first_rxctrl + j * to_next_rxctrl;
+ fp->reg_txctrl = reg_first_txctrl + j * to_next_txctrl;
+
+ /* The FEPCI specific entries in the device structure */
+ dev->open = &fepci_open;
+ dev->hard_start_xmit = &fepci_start_xmit;
+ dev->stop = &fepci_close;
+ dev->get_stats = &fepci_get_stats;
+ dev->set_multicast_list = &set_rx_mode;
+ dev->do_ioctl = &netdev_ioctl;
+ dev->tx_timeout = fepci_tx_timeout;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+#ifdef FEPCI_POINT_TO_POINT
+ if (is_ptp_interface(dev)) {
+ dev->flags |= (IFF_POINTOPOINT);
+ dev->flags &= ~(IFF_BROADCAST | IFF_MULTICAST);
+ if (retina_noarp_with_ptp) {
+ dev->rebuild_header = fepci_rebuild_header;
+ dev->flags |= (IFF_NOARP);
+ }
+ }
+#endif
+ DBG_PRINT("register_netdev %p.\n", dev);
+ i = register_netdev(dev);
+ if (i) {
+ printk(KERN_WARNING
+ "%s: register_netdev failed 0x%x.\n",
+ fepci_NAME, i);
+ continue;
+ }
+
+ printk("%s: %s type %x at %p, ",
+ dev->name, pci_id_tbl[chip_idx].name,
+ 0x0 /* inl(ioaddr + ChipRev) */ , ioaddr);
+ for (i = 0; i < 5; i++)
+ printk("%2.2x:", dev->dev_addr[i]);
+ printk("%2.2x, IRQ %d.\n", dev->dev_addr[i], pdev->irq);
+#ifdef DEBUG_PROC_FILES
+ fepci_proc_init_channel(position, j, fp);
+#endif /* DEBUG_PROC_FILES */
+ }
+ up_write(&card_privates[position].semaphore);
+ DBG_PRINT("fepci_init_one %u.\n", position);
+ return 0;
+
+ err_2:
+ iounmap(ioaddr);
+ err_1_5:
+ pci_set_drvdata(pdev, NULL);
+ err_1:
+ pci_disable_device(pdev);
+ pci_release_regions(pdev);
+ return -ENODEV;
+}
+
+static int fepci_open(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+
+ down_write(&fp->this_card_priv->semaphore);
+
+ if (fp->this_card_priv->pci_dev == NULL) {
+ up_write(&fp->this_card_priv->semaphore);
+ fepci_close(dev);
+ return -ENXIO;
+ }
+
+ while (fp->in_stream_mode) {
+ up_write(&fp->this_card_priv->semaphore);
+ fepci_stream_close(dev);
+ down_write(&fp->this_card_priv->semaphore);
+ }
+
+ {
+ int i = request_irq(dev->irq, &fepci_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (i) {
+ up_write(&fp->this_card_priv->semaphore);
+ printk(KERN_WARNING
+ "%s: unable to allocate IRQ %d, error 0x%x",
+ fepci_NAME, dev->irq, i);
+ return i;
+ }
+ }
+
+ fp->in_eth_mode = 1;
+
+ fepci_init_ring(dev);
+ set_rx_mode(dev);
+
+ fp->cur_rx = 0;
+ fp->cur_tx = 0;
+
+ netif_carrier_off(dev);
+
+ /* Enable interrupts by setting the interrupt mask. */
+
+ set_int_mask(fp->channel_number,
+ MaskFrameReceived | MaskFrameTransmitted |
+ MaskRxFifoError | MaskRxFrameDroppedError |
+ MaskTxFifoError, fp->this_card_priv);
+
+ {
+ void *ioaddr = (void *)dev->base_addr;
+
+ /* Start Rx and Tx channels. */
+ outl(Receive_enable |
+ (Rx_fifo_threshold & RX_FIFO_THRESHOLD_PACKET_MODE),
+ (void *)(ioaddr + fp->reg_rxctrl));
+
+ outl((Transmit_enable |
+ (Tx_desc_threshold &
+ (TX_DESC_THRESHOLD_PACKET_MODE << 8)) |
+ (Tx_fifo_threshold & TX_FIFO_THRESHOLD_PACKET_MODE)),
+ (void *)(ioaddr + fp->reg_txctrl));
+ }
+
+ netif_start_queue(dev);
+
+ /* Set timer */
+ init_timer(&fp->timer);
+ fp->timer.expires = jiffies + HZ;
+ fp->timer.data = (unsigned long)dev;
+ fp->timer.function = &fepci_timer; /* timer handler */
+ add_timer(&fp->timer);
+
+ up_write(&fp->this_card_priv->semaphore);
+
+ return 0;
+}
+
+static void fepci_timer(unsigned long data)
+{
+ struct net_device *dev = (struct net_device *)data;
+ struct fepci_ch_private *fp = dev->priv;
+
+ /* just to make it absolutely sure the sending starts again
+ * if the system jams: free already sent skbuffs */
+
+ if (netif_tx_trylock(dev)) {
+ if (!(fp->tx_interrupts_since_last_timer)) {
+ unsigned i = TX_RING_SIZE - 1;
+ do {
+ u32 desc_b;
+ if ((fp->tx_skbuff[i] != NULL)
+ &&
+ (((desc_b =
+ inl(&fp->tx_desc[i].
+ desc_b)) & transfer_not_done) ==
+ 0)) {
+ /* has been sent */
+ pci_unmap_single(fp->
+ this_card_priv->
+ pci_dev,
+ inl(&fp->
+ tx_desc[i].
+ desc_a),
+ desc_b &
+ frame_length,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb(fp->tx_skbuff[i]);
+ fp->tx_skbuffs_out++;
+
+ fp->tx_skbuff[i] = NULL;
+
+ if (desc_b & fifo_error) {
+ fp->stats.tx_fifo_errors++;
+ fp->tx_desc_fifo_err++;
+ } else
+ fp->stats.tx_packets++;
+ }
+ }
+ while (i--);
+ }
+ /* if the next descriptor is free, continue taking new ones */
+ if (!(inl(&fp->tx_desc[fp->cur_tx].desc_b) & transfer_not_done))
+ netif_wake_queue(dev);
+ netif_tx_unlock(dev);
+ }
+
+ fp->tx_interrupts_since_last_timer = 0;
+
+ if ((get_common_reg_word(fp->this_card_priv->ioaddr, 0x72) >> fp->
+ channel_number) & 1) {
+ netif_carrier_off(dev);
+ } else {
+ netif_carrier_on(dev);
+ }
+
+ if (fp->in_eth_mode)
+ mod_timer(&fp->timer, jiffies + 5 * HZ);
+}
+
+static void fepci_tx_timeout(struct net_device *dev)
+{
+ DBG_PRINT("%s: transmit timed out!\n", dev->name);
+}
+
+/* Initialize the rx and tx rings */
+static void fepci_init_ring(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ unsigned i;
+
+ fp->rx_buf_sz = 2000;
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ struct sk_buff *skb =
+ __dev_alloc_skb(fp->rx_buf_sz, GFP_KERNEL);
+
+ if (skb == NULL) {
+ ZERO:
+ outl(0, &fp->rx_desc[i].desc_a);
+ outl(0, &fp->rx_desc[i].desc_b);
+ continue;
+ } else {
+ u32 bus_address;
+ bus_address =
+ pci_map_single(fp->this_card_priv->pci_dev,
+ skb->data, fp->rx_buf_sz,
+ PCI_DMA_FROMDEVICE);
+ if (likely(!pci_dma_mapping_error(bus_address))) {
+ fp->rx_skbuffs_in++;
+ /* Mark as being used by this device */
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ fp->rx_skbuff[i] = skb;
+ outl(bus_address, &fp->rx_desc[i].desc_a);
+ outl(enable_transfer, &fp->rx_desc[i].desc_b);
+ } else {
+ dev_kfree_skb(skb);
+ goto ZERO;
+ }
+ }
+ }
+
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ fp->tx_skbuff[i] = NULL;
+ outl(0, &fp->tx_desc[i].desc_a); /* no skbuff */
+ /* no transfer enable, no int enable */
+ outl(0, &fp->tx_desc[i].desc_b);
+ }
+
+ return;
+}
+
+static int fepci_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ const unsigned cur_tx = fp->cur_tx;
+
+ fp->tx_skbuffs_in++;
+
+ {
+ u32 tx_length = skb->len;
+ u32 bus_address;
+ struct sk_buff *old;
+ if (unlikely(tx_length < ETH_ZLEN)) {
+ struct sk_buff *bigger =
+ skb_copy_expand(skb, 0, ETH_ZLEN - tx_length,
+ GFP_ATOMIC);
+ if (unlikely(!bigger))
+ return NET_XMIT_CN;
+ tx_length = ETH_ZLEN;
+ old = skb;
+ skb = bigger;
+ } else
+ old = NULL;
+ bus_address =
+ pci_map_single(fp->this_card_priv->pci_dev, skb->data,
+ tx_length, PCI_DMA_TODEVICE);
+ if (likely(!pci_dma_mapping_error(bus_address))) {
+ struct fepci_desc *descriptor;
+ if (old)
+ dev_kfree_skb(old);
+ descriptor = &fp->tx_desc[cur_tx];
+ outl(bus_address, &descriptor->desc_a);
+ outl((tx_length & frame_length) | enable_transfer,
+ &descriptor->desc_b);
+ } else {
+ if (old)
+ dev_kfree_skb(skb);
+ return NET_XMIT_CN;
+ }
+ fp->stats.tx_bytes += tx_length;
+ }
+
+ fp->tx_skbuff[cur_tx] = skb;
+
+ {
+ /* Calculate the next Tx descriptor entry */
+ unsigned next = (cur_tx + 1) & (TX_RING_SIZE - 1);
+ fp->cur_tx = next;
+ /* if the next descriptor is busy,
+ * discontinue taking new ones */
+ if (fp->tx_skbuff[next] != NULL)
+ netif_stop_queue(dev);
+ }
+ dev->trans_start = jiffies;
+
+ return NET_XMIT_SUCCESS;
+}
+
+static irqreturn_t fepci_interrupt(int irq, void *dev_instance)
+{
+ struct net_device *dev = dev_instance;
+ void *ioaddr = (void *)dev->base_addr;
+ struct fepci_ch_private *fp = dev->priv;
+ u32 intr_status = get_int_status(fp->channel_number, ioaddr);
+ bool RxFifoError;
+ bool RxFrameDroppedError;
+
+ clear_int(fp->channel_number, intr_status, ioaddr);
+
+ RxFifoError = (intr_status & IntrRxFifoError) != 0;
+ RxFrameDroppedError = (intr_status & IntrRxFrameDroppedError) != 0;
+ /* first update interrupt error table */
+ fp->int_err_table[RxFifoError][RxFrameDroppedError]++;
+
+ fp->interrupts++;
+
+ if (intr_status & IntrFrameReceived) {
+ fepci_rx(dev);
+ fp->rx_interrupts++;
+ }
+ if (intr_status & IntrFrameTransmitted) {
+ fp->tx_interrupts_since_last_timer++;
+ if (netif_tx_trylock(dev)) {
+ unsigned i = TX_RING_SIZE - 1;
+ do {
+ u32 desc_b;
+ if ((fp->tx_skbuff[i] != NULL)
+ &&
+ (((desc_b =
+ inl(&fp->tx_desc[i].
+ desc_b)) & transfer_not_done) ==
+ 0)) {
+ /* has been sent */
+ pci_unmap_single(fp->
+ this_card_priv->
+ pci_dev,
+ inl(&fp->
+ tx_desc[i].
+ desc_a),
+ desc_b &
+ frame_length,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb_irq(fp->tx_skbuff[i]);
+ fp->tx_skbuffs_out++;
+ fp->tx_skbuff[i] = NULL;
+ if (desc_b & fifo_error) {
+ fp->stats.tx_fifo_errors++;
+ fp->tx_desc_fifo_err++;
+ } else {
+ fp->stats.tx_packets++;
+ }
+ }
+ }
+ while (i--);
+ {
+ unsigned next = fp->cur_tx;
+ /* if next tx descriptor is free,
+ * continue taking new ones */
+ if (!(inl(&fp->tx_desc[next].desc_b) &
+ transfer_not_done))
+ netif_wake_queue(dev);
+ }
+ netif_tx_unlock(dev);
+ }
+ fp->tx_interrupts++;
+ }
+ if (RxFifoError) {
+ fp->rx_int_fifo_err++;
+ fepci_rx(dev);
+ }
+ if (RxFrameDroppedError) {
+ fp->rx_int_frame_dropped_err++;
+ fepci_rx(dev);
+ }
+ if (intr_status & IntrTxFifoError)
+ fp->tx_int_fifo_err++;
+ return intr_status ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int fepci_rx(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+
+ unsigned int i, old_cur_rx = fp->cur_rx;
+ for (i = old_cur_rx;
+ i != ((old_cur_rx + RX_RING_SIZE - 1) & (RX_RING_SIZE - 1));
+ i = (i + 1) & (RX_RING_SIZE - 1)) {
+ u32 desc_b;
+ struct sk_buff *skb;
+ /* transfer done */
+ bool condition = (skb = fp->rx_skbuff[i]) &&
+ ((desc_b =
+ inl(&fp->rx_desc[i].desc_b)) & transfer_not_done) == 0;
+ if (condition) {
+ bool fifo = (desc_b & fifo_error) != 0;
+ bool size = (desc_b & size_error) != 0;
+ bool crc = (desc_b & crc_error) != 0;
+ bool octet = (desc_b & octet_error) != 0;
+ bool line = (desc_b & line_error) != 0;
+ u32 length = desc_b & frame_length;
+ pci_unmap_single(fp->this_card_priv->pci_dev,
+ inl(&fp->rx_desc[i].desc_a),
+ fp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ fp->cur_rx = (i + 1) & (RX_RING_SIZE - 1);
+ /* first update error table */
+ fp->rx_desc_err_table[fifo]
+ [size]
+ [crc]
+ [octet]
+ [line]++;
+ /* small packet counters */
+ if (length == 0)
+ fp->rx_packets_of_size_0++;
+ else if (length == 1)
+ fp->rx_packets_of_size_1++;
+ else if (length == 2)
+ fp->rx_packets_of_size_2++;
+ else if (length == 3)
+ fp->rx_packets_of_size_3++;
+ else if (length < 8)
+ fp->rx_packets_of_size_4_7++;
+ else if (length < 16)
+ fp->rx_packets_of_size_8_15++;
+ else if (length < 32)
+ fp->rx_packets_of_size_16_31++;
+
+ if (fifo) {
+ fp->stats.rx_errors++;
+ fp->stats.rx_frame_errors++;
+ fp->rx_desc_fifo_err++;
+ outl(enable_transfer, &fp->rx_desc[i].desc_b);
+ } else if (size) {
+ fp->stats.rx_errors++;
+ fp->stats.rx_over_errors++;
+ fp->rx_desc_size_err++;
+ outl(enable_transfer, &fp->rx_desc[i].desc_b);
+ } else if (crc) {
+ fp->stats.rx_errors++;
+ fp->stats.rx_crc_errors++;
+ fp->rx_desc_crc_err++;
+ outl(enable_transfer, &fp->rx_desc[i].desc_b);
+ } else if (octet) {
+ fp->rx_desc_octet_err++;
+ outl(enable_transfer, &fp->rx_desc[i].desc_b);
+ } else if (line) {
+ fp->rx_desc_line_err++;
+ outl(enable_transfer, &fp->rx_desc[i].desc_b);
+ } else {
+ skb_put(skb, length - 4);
+
+ skb->protocol = eth_type_trans(skb, dev);
+#ifdef FEPCI_POINT_TO_POINT
+ if (dev->flags & IFF_POINTOPOINT) {
+ /* everything received is for us. */
+
+ if (dev->flags & IFF_NOARP) {
+ /* NOARP applied ->
+ * destination MAC addresses
+ * are bogus */
+ if (skb->
+ pkt_type ==
+ PACKET_OTHERHOST)
+ skb->
+ pkt_type =
+ PACKET_HOST;
+ } else {
+ /* NOARP not applied ->
+ * destination MAC addresses are
+ * broadcast */
+ if (skb->
+ pkt_type ==
+ PACKET_BROADCAST)
+ skb->
+ pkt_type =
+ PACKET_HOST;
+
+ } /* IFF_NOARP */
+ } /* IFF_POINTOPOINT */
+#endif
+ skb_reset_mac_header(skb);
+ netif_rx(skb);
+ fp->rx_skbuffs_out++;
+ /* statistics -4==crc */
+ fp->stats.rx_bytes += length - 4;
+ fp->stats.rx_packets++;
+
+ fp->rx_skbuff[i] = NULL;
+ dev->last_rx = jiffies;
+ }
+ }
+ /* reserve a new one */
+ if (fp->rx_skbuff[i] == NULL) {
+ struct sk_buff *skb = dev_alloc_skb(fp->rx_buf_sz);
+
+ if (skb == NULL)
+ continue; /* Better luck next round. */
+ else {
+ u32 address =
+ pci_map_single(fp->this_card_priv->pci_dev,
+ skb->data,
+ fp->rx_buf_sz,
+ PCI_DMA_FROMDEVICE);
+ if (likely(!pci_dma_mapping_error(address))) {
+ struct fepci_desc *descriptor;
+ fp->rx_skbuffs_in++;
+ fp->rx_skbuff[i] = skb;
+ /* Mark as being used by this device. */
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ descriptor = &fp->rx_desc[i];
+ outl(address, &descriptor->desc_a);
+ outl(enable_transfer,
+ &descriptor->desc_b);
+ } else {
+ dev_kfree_skb(skb);
+ printk(KERN_WARNING
+ "%s: failed to map DMA.\n",
+ dev->name);
+ }
+ }
+ }
+ }
+ return 0;
+}
+
+static int fepci_close(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ unsigned i;
+ void *ioaddr = (void *)dev->base_addr;
+
+ down_write(&fp->this_card_priv->semaphore);
+
+ netif_stop_queue(dev);
+
+ /* Disable interrupts by clearing the interrupt mask */
+ set_int_mask(fp->channel_number, 0x0, fp->this_card_priv);
+
+ /* Stop the Tx and Rx processes */
+ outl(0x0, ioaddr + fp->reg_rxctrl);
+ outl(0x0, ioaddr + fp->reg_txctrl);
+ fp->in_eth_mode = 0;
+
+ del_timer_sync(&fp->timer);
+
+ free_irq(dev->irq, dev);
+
+ /* Free all the rx skbuffs */
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (fp->rx_skbuff[i] != NULL) {
+ pci_unmap_single(fp->this_card_priv->
+ pci_dev,
+ inl(&fp->rx_desc[i].
+ desc_a),
+ fp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(fp->rx_skbuff[i]);
+ fp->rx_skbuffs_out++;
+ fp->rx_skbuff[i] = NULL;
+ }
+ }
+ /* and tx */
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ if (fp->tx_skbuff[i] != NULL) {
+ pci_unmap_single(fp->this_card_priv->
+ pci_dev,
+ inl(&fp->tx_desc[i].
+ desc_a),
+ inl(&fp->tx_desc[i].
+ desc_b) & frame_length,
+ PCI_DMA_TODEVICE);
+ dev_kfree_skb(fp->tx_skbuff[i]);
+ fp->tx_skbuffs_out++;
+ fp->tx_skbuff[i] = NULL;
+ }
+ }
+ up_write(&fp->this_card_priv->semaphore);
+ return 0;
+}
+
+static struct net_device_stats *fepci_get_stats(struct net_device *dev)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ return &fp->stats;
+}
+
+static void set_rx_mode(struct net_device *dev)
+{
+ DBG_PRINT("set_rx_mode\n");
+}
+
+static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+ struct fepci_ch_private *fp = dev->priv;
+ char data = ((u32) rq->ifr_data) & 0xff;
+ int ret = 0;
+
+ DBG_PRINT("%s: netdev_ioctl called (command_nmbr:0x%x).\n",
+ dev->name, cmd);
+
+ switch (cmd) {
+ case FEPCI_NETDEV_IOCTL_STREAM_BUFSIZE:
+ DBG_PRINT
+ (" ioctl stream bufsize commanded. (bufsize:0x%x)\n", data);
+ down_write(&fp->this_card_priv->semaphore);
+ if (fp->in_stream_mode) {
+ up_write(&fp->this_card_priv->semaphore);
+ return -EBUSY;
+ }
+ fp->bufsize_order = data;
+ up_write(&fp->this_card_priv->semaphore);
+ break;
+ case FEPCI_NETDEV_IOCTL_STREAM_UNITSIZE:
+ DBG_PRINT
+ (" ioctl stream unitsize commanded. (unitsize:0x%x)\n",
+ data);
+ down_write(&fp->this_card_priv->semaphore);
+ if (fp->in_stream_mode) {
+ up_write(&fp->this_card_priv->semaphore);
+ return -EBUSY;
+ }
+ fp->fake_unit_sz_order = data;
+ up_write(&fp->this_card_priv->semaphore);
+ break;
+ case FEPCI_NETDEV_IOCTL_STREAM_OPEN:
+ DBG_PRINT(" ioctl stream open commanded.\n");
+ ret = fepci_stream_open(dev);
+ break;
+ case FEPCI_NETDEV_IOCTL_STREAM_START:
+ DBG_PRINT(" ioctl stream start commanded.\n");
+ ret = fepci_stream_start(dev);
+ break;
+ case FEPCI_NETDEV_IOCTL_STREAM_CLOSE:
+ DBG_PRINT(" ioctl stream close commanded.\n");
+ ret = fepci_stream_close(dev);
+ break;
+ default:
+ DBG_PRINT(" unknown ioctl command 0x%x.\n", cmd);
+ return -ENOTTY;
+ }
+ return ret;
+}
+
+static void fepci_remove_one(struct pci_dev *pdev)
+{
+ /* from first dev, same in all */
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct fepci_ch_private *fp = dev->priv;
+ struct fepci_card_private *cardp = fp->this_card_priv;
+ unsigned int i;
+
+ outl(0, (void *)(cardp->ioaddr + reg_custom));
+ /* alarm manager int off */
+
+ for (i = 0; i < CHANNELS; i++) {
+ dev = cardp->ch_privates[i]->this_dev;
+ fp = dev->priv;
+#ifdef DEBUG_PROC_FILES
+ fepci_proc_cleanup_channel(cardp->card_number,
+ fp->channel_number);
+#endif /* DEBUG_PROC_FILES */
+ unregister_netdev(dev);
+ fepci_stream_close(dev);
+ free_netdev(dev);
+ }
+
+ pdev = cardp->pci_dev;
+ free_irq(pdev->irq, (void *)cardp);
+
+ down_write(&cardp->semaphore);
+
+ fepci_proc_cleanup_card(cardp->card_number);
+
+ pci_set_drvdata(pdev, NULL);
+
+ if (cardp->card_number + 1 == find_cnt)
+ find_cnt--;
+ cardp->pci_dev = NULL;
+
+ iounmap(cardp->ioaddr);
+
+ up_write(&cardp->semaphore);
+
+ pci_disable_device(pdev);
+ pci_release_regions(pdev);
+}
+
+static struct pci_driver fepci_driver = {
+ name:DRV_NAME,
+ id_table:fepci_pci_tbl,
+ probe:fepci_init_one,
+ remove:fepci_remove_one,
+};
+
+static int __init fepci_init(void)
+{
+ unsigned card = MAX_DEVICES - 1;
+ do
+ init_rwsem(&card_privates[card].semaphore);
+ while (card--);
+ major = fepci_register_char_device();
+ if (major < 0)
+ return major;
+ stream_pointers = (u32) get_zeroed_page(GFP_KERNEL | __GFP_DMA);
+ DBG_PRINT(" %x.\n", stream_pointers);
+ if (stream_pointers == 0) {
+ fepci_unregister_char_device();
+ return -ENOMEM;
+ }
+ DBG_PRINT("SetPageReserved %u.\n", stream_pointers);
+ SetPageReserved(virt_to_page(stream_pointers));
+ DBG_PRINT("fepci_proc_init_driver.\n");
+ fepci_proc_init_driver();
+ DBG_PRINT("pci_register_driver %p.\n", &fepci_driver);
+ {
+ int ret = pci_register_driver(&fepci_driver);
+ if (ret) {
+ fepci_unregister_char_device();
+ ClearPageReserved(virt_to_page(stream_pointers));
+ free_page(stream_pointers);
+ DBG_PRINT
+ ("pci_register_driver %p failed with %d.\n",
+ &fepci_driver, ret);
+ fepci_proc_cleanup_driver();
+ return ret;
+ }
+ DBG_PRINT("fepci_init %d.\n", ret);
+ return ret;
+ }
+}
+
+static void __exit fepci_cleanup(void)
+{
+ DBG_PRINT("fepci_cleanup\n");
+ pci_unregister_driver(&fepci_driver);
+ fepci_proc_cleanup_driver();
+ fepci_unregister_char_device();
+ ClearPageReserved(virt_to_page(stream_pointers));
+ free_page(stream_pointers);
+}
+
+module_init(fepci_init);
+module_exit(fepci_cleanup);
+
+/* proc-filesystem specific stuff: */
+
+#ifdef DEBUG_PROC_FILES
+
+static char string_true[] = "<true> ";
+static char string_false[] = " - ";
+
+/* convert boolean value to more clarifying string format */
+static char *b(int b)
+{
+ if (b)
+ return string_true;
+ return string_false;
+}
+
+static int fepci_proc_read_descriptors(char *buf, char **start,
+ off_t offset, int len, int *eof,
+ void *data)
+{
+ int pos = 0;
+
+ int d; /* descriptor */
+
+ struct fepci_ch_private *fp;
+ struct fepci_card_private *cardp;
+ fp = (struct fepci_ch_private *)data;
+ cardp = (struct fepci_card_private *)fp->this_card_priv;
+
+ pos +=
+ sprintf(buf + pos,
+ "Rx descriptors of channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+ pos += sprintf(buf + pos, "\n");
+
+ for (d = 0; d < RX_RING_SIZE; d++) {
+ pos += sprintf(buf + pos, " rx descriptor number %u : \n", d);
+ pos +=
+ sprintf(buf + pos, " desc_a value : 0x%8x \n",
+ inl(&fp->rx_desc[d].desc_a));
+ pos +=
+ sprintf(buf + pos, " desc_b value : 0x%8x \n",
+ inl(&fp->rx_desc[d].desc_b));
+ }
+
+ pos += sprintf(buf + pos, "\n");
+ pos +=
+ sprintf(buf + pos,
+ "Tx descriptors of channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+ pos += sprintf(buf + pos, "\n");
+
+ for (d = 0; d < TX_RING_SIZE; d++) {
+ pos += sprintf(buf + pos, " tx descriptor number %u : \n", d);
+ pos +=
+ sprintf(buf + pos, " desc_a value : 0x%8x \n",
+ inl(&fp->tx_desc[d].desc_a));
+ pos +=
+ sprintf(buf + pos, " desc_b value : 0x%8x \n",
+ inl(&fp->tx_desc[d].desc_b));
+ }
+
+ pos += sprintf(buf + pos, "\n");
+ pos += sprintf(buf + pos, "last line\n");
+
+ *eof = 1;
+ return pos;
+}
+
+static int fepci_proc_read_stream_counters(char *buf, char **start,
+ off_t offset, int len, int *eof,
+ void *data)
+{
+ int pos = 0;
+
+ int fifo;
+ int size;
+ int crc;
+ int octet;
+ int line;
+ int frame_dropped;
+
+ struct fepci_ch_private *fp;
+ struct fepci_card_private *cardp;
+
+ fp = (struct fepci_ch_private *)data;
+ cardp = (struct fepci_card_private *)fp->this_card_priv;
+
+ pos +=
+ sprintf(buf + pos,
+ "Stream status for channel %u of card %u : \n",
+ fp->channel_number, cardp->card_number);
+ if (fp->in_stream_mode) {
+ pos += sprintf(buf + pos, " Channel is in stream mode \n");
+ if (fp->stream_on) {
+ pos += sprintf(buf + pos, " Stream is on (started) \n");
+ } else {
+ pos +=
+ sprintf(buf + pos,
+ " Stream is off (not started)\n");
+ }
+ } else {
+ pos += sprintf(buf + pos, " Channel is NOT in stream mode \n");
+ }
+ pos += sprintf(buf + pos, "\n");
+
+ pos +=
+ sprintf(buf + pos,
+ "Error counters for channel %u of card %u "
+ "(in stream mode) : \n",
+ fp->channel_number, cardp->card_number);
+
+ pos +=
+ sprintf(buf + pos, " rx_desc_fifo_err_stream : %10u \n",
+ fp->rx_desc_fifo_err_stream);
+
+ pos +=
+ sprintf(buf + pos, " rx_desc_size_err_stream : %10u \n",
+ fp->rx_desc_size_err_stream);
+ pos +=
+ sprintf(buf + pos, " rx_desc_crc_err_stream : %11u \n",
+ fp->rx_desc_crc_err_stream);
+ pos +=
+ sprintf(buf + pos, " rx_desc_octet_err_stream : %9u \n",
+ fp->rx_desc_octet_err_stream);
+ pos +=
+ sprintf(buf + pos, " rx_desc_line_err_stream : %10u \n",
+ fp->rx_desc_line_err_stream);
+ pos +=
+ sprintf(buf + pos, " tx_desc_fifo_err_stream : %10u \n",
+ fp->tx_desc_fifo_err_stream);
+ pos +=
+ sprintf(buf + pos, " rx_int_fifo_err_stream : %11u \n",
+ fp->rx_int_fifo_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ " rx_int_frame_dropped_err_stream : %2u \n",
+ fp->rx_int_frame_dropped_err_stream);
+ pos +=
+ sprintf(buf + pos, " tx_int_fifo_err_stream : %11u \n",
+ fp->tx_int_fifo_err_stream);
+
+ pos += sprintf(buf + pos, "\n");
+ pos +=
+ sprintf(buf + pos,
+ "Other counters for channel %u of card %u "
+ "(in stream mode) : \n",
+ fp->channel_number, cardp->card_number);
+ pos +=
+ sprintf(buf + pos, " interrupts : %10u \n",
+ fp->interrupts_stream);
+ pos +=
+ sprintf(buf + pos, " rx_interrupts : %10u \n",
+ fp->rx_interrupts_stream);
+ pos +=
+ sprintf(buf + pos, " tx_interrupts : %10u \n",
+ fp->tx_interrupts_stream);
+ pos += sprintf(buf + pos, "\n");
+
+ pos +=
+ sprintf(buf + pos,
+ "Error counter tables for channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+ pos += sprintf(buf + pos, " rx_desc_error_table_stream:\n");
+ pos +=
+ sprintf(buf + pos,
+ " [fifo] [size] [crc] [octet] [line] : [count]\n");
+
+ for (fifo = 0; fifo < 2; fifo++)
+ for (size = 0; size < 2; size++)
+ for (crc = 0; crc < 2; crc++)
+ for (octet = 0; octet < 2; octet++)
+ for (line = 0; line < 2; line++)
+ pos +=
+ sprintf(buf + pos,
+ " %s %s %s %s %s "
+ ": %7u \n",
+ b(fifo),
+ b(size),
+ b(crc),
+ b(octet),
+ b(line),
+ fp->
+ rx_desc_err_table_stream
+ [fifo][size]
+ [crc][octet]
+ [line]);
+
+ pos += sprintf(buf + pos, "\n");
+ pos += sprintf(buf + pos, " int_error_table:\n");
+ pos += sprintf(buf + pos, " [rx_fifo] [frame_dropped] : [count]\n");
+ for (fifo = 0; fifo < 2; fifo++)
+ for (frame_dropped = 0; frame_dropped < 2; frame_dropped++)
+ pos +=
+ sprintf(buf + pos,
+ " %s %s : %7u\n", b(fifo),
+ b(frame_dropped),
+ fp->int_err_table_stream[fifo]
+ [frame_dropped]);
+
+ pos += sprintf(buf + pos, "\n");
+
+ pos +=
+ sprintf(buf + pos,
+ "Small packet counters for channel %u of card %u "
+ "(stream mode): \n",
+ fp->channel_number, cardp->card_number);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 0 : %10u \n",
+ fp->rx_packets_of_size_0_stream);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 1 : %10u \n",
+ fp->rx_packets_of_size_1_stream);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 2 : %10u \n",
+ fp->rx_packets_of_size_2_stream);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 3 : %10u \n",
+ fp->rx_packets_of_size_3_stream);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 4..7 : %10u \n",
+ fp->rx_packets_of_size_4_7_stream);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 8..15 : %10u \n",
+ fp->rx_packets_of_size_8_15_stream);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 16..31 : %10u \n",
+ fp->rx_packets_of_size_16_31_stream);
+
+ pos += sprintf(buf + pos, "\n");
+ pos += sprintf(buf + pos, "last line\n");
+
+ *eof = 1;
+ return pos;
+}
+
+static int fepci_proc_read_counters(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ int pos = 0;
+
+ int fifo;
+ int size;
+ int crc;
+ int octet;
+ int line;
+ int frame_dropped;
+
+ struct fepci_ch_private *fp;
+ struct fepci_card_private *cardp;
+
+ fp = (struct fepci_ch_private *)data;
+ cardp = (struct fepci_card_private *)fp->this_card_priv;
+
+ pos +=
+ sprintf(buf + pos,
+ "Error counters for channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+
+ pos +=
+ sprintf(buf + pos, " rx_desc_fifo_err : %10u \n",
+ fp->rx_desc_fifo_err);
+ pos +=
+ sprintf(buf + pos, " rx_desc_size_err : %10u \n",
+ fp->rx_desc_size_err);
+ pos +=
+ sprintf(buf + pos, " rx_desc_crc_err : %11u \n",
+ fp->rx_desc_crc_err);
+ pos +=
+ sprintf(buf + pos, " rx_desc_octet_err : %9u \n",
+ fp->rx_desc_octet_err);
+ pos +=
+ sprintf(buf + pos, " rx_desc_line_err : %10u \n",
+ fp->rx_desc_line_err);
+ pos +=
+ sprintf(buf + pos, " tx_desc_fifo_err : %10u \n",
+ fp->tx_desc_fifo_err);
+ pos +=
+ sprintf(buf + pos, " rx_int_fifo_err : %11u \n",
+ fp->rx_int_fifo_err);
+ pos +=
+ sprintf(buf + pos, " rx_int_frame_dropped_err : %2u \n",
+ fp->rx_int_frame_dropped_err);
+ pos +=
+ sprintf(buf + pos, " tx_int_fifo_err : %11u \n",
+ fp->tx_int_fifo_err);
+
+ pos += sprintf(buf + pos, "\n");
+ pos +=
+ sprintf(buf + pos,
+ "Other counters for channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+ pos += sprintf(buf + pos, " interrupts : %10u \n", fp->interrupts);
+ pos +=
+ sprintf(buf + pos, " rx_interrupts : %10u \n", fp->rx_interrupts);
+ pos +=
+ sprintf(buf + pos, " tx_interrupts : %10u \n", fp->tx_interrupts);
+ pos += sprintf(buf + pos, "\n");
+
+ pos +=
+ sprintf(buf + pos, " rx_skbuffs_in : %10u \n", fp->rx_skbuffs_in);
+ pos +=
+ sprintf(buf + pos, " rx_skbuffs_out : %9u \n", fp->rx_skbuffs_out);
+ pos +=
+ sprintf(buf + pos, " difference : %13i \n",
+ fp->rx_skbuffs_in - fp->rx_skbuffs_out);
+ pos +=
+ sprintf(buf + pos, " tx_skbuffs_in : %10u \n", fp->tx_skbuffs_in);
+ pos +=
+ sprintf(buf + pos, " tx_skbuffs_out : %9u \n", fp->tx_skbuffs_out);
+ pos +=
+ sprintf(buf + pos, " difference : %13i \n",
+ fp->tx_skbuffs_in - fp->tx_skbuffs_out);
+
+ pos += sprintf(buf + pos, "\n");
+ pos +=
+ sprintf(buf + pos,
+ "Error counter tables for channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+ pos += sprintf(buf + pos, " rx_desc_error_table:\n");
+ pos +=
+ sprintf(buf + pos,
+ " [fifo] [size] [crc] [octet] [line] : [count]\n");
+
+ for (fifo = 0; fifo < 2; fifo++)
+ for (size = 0; size < 2; size++)
+ for (crc = 0; crc < 2; crc++)
+ for (octet = 0; octet < 2; octet++)
+ for (line = 0; line < 2; line++)
+ pos +=
+ sprintf(buf + pos,
+ " %s %s %s %s %s "
+ ": %7u \n",
+ b(fifo),
+ b(size),
+ b(crc),
+ b(octet),
+ b(line),
+ fp->
+ rx_desc_err_table
+ [fifo][size]
+ [crc][octet]
+ [line]);
+
+ pos += sprintf(buf + pos, "\n");
+ pos += sprintf(buf + pos, " int_error_table:\n");
+ pos += sprintf(buf + pos, " [rx_fifo] [frame_dropped] : [count]\n");
+ for (fifo = 0; fifo < 2; fifo++)
+ for (frame_dropped = 0; frame_dropped < 2; frame_dropped++)
+ pos +=
+ sprintf(buf + pos,
+ " %s %s : %7u\n", b(fifo),
+ b(frame_dropped),
+ fp->int_err_table[fifo][frame_dropped]);
+
+ pos += sprintf(buf + pos, "\n");
+
+ pos +=
+ sprintf(buf + pos,
+ "Small packet counters for channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 0 : %10u \n",
+ fp->rx_packets_of_size_0);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 1 : %10u \n",
+ fp->rx_packets_of_size_1);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 2 : %10u \n",
+ fp->rx_packets_of_size_2);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 3 : %10u \n",
+ fp->rx_packets_of_size_3);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 4..7 : %10u \n",
+ fp->rx_packets_of_size_4_7);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 8..15 : %10u \n",
+ fp->rx_packets_of_size_8_15);
+ pos +=
+ sprintf(buf + pos, " rx_packets of size 16..31 : %10u \n",
+ fp->rx_packets_of_size_16_31);
+
+ pos += sprintf(buf + pos, "\n");
+ pos += sprintf(buf + pos, "last line\n");
+
+ *eof = 1;
+ return pos;
+}
+
+static int fepci_proc_read_registers(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ int pos = 0;
+
+ struct fepci_ch_private *fp;
+ struct fepci_card_private *cardp;
+ void *ioaddr;
+
+ fp = (struct fepci_ch_private *)data;
+ cardp = (struct fepci_card_private *)fp->this_card_priv;
+ ioaddr = cardp->ioaddr;
+
+ pos +=
+ sprintf(buf + pos, "Registers for channel %u of card %u: \n",
+ fp->channel_number, cardp->card_number);
+
+ pos +=
+ sprintf(buf + pos, " interrupt status : 0x%8x \n",
+ get_int_status(fp->channel_number, ioaddr));
+ pos +=
+ sprintf(buf + pos, " interrupt mask : 0x%8x \n",
+ get_int_mask(fp->channel_number, ioaddr));
+ pos +=
+ sprintf(buf + pos, " rxctrl : 0x%8x \n",
+ inl(ioaddr + fp->reg_rxctrl));
+ pos +=
+ sprintf(buf + pos, " txctrl : 0x%8x \n",
+ inl(ioaddr + fp->reg_txctrl));
+
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "last line\n");
+
+ *eof = 1;
+ return pos;
+}
+
+#endif /* DEBUG_PROC_FILES */
+
+int get_line_data_rate_value(unsigned char line_rate)
+{
+ switch (line_rate) {
+ case 0x00:
+ return 0;
+ case 0x01:
+ return 1;
+ case 0x05:
+ return 8;
+ case 0x06:
+ return 10;
+ case 0x14:
+ return 256;
+ case 0x15:
+ return 300;
+ case 0x20:
+ return 1;
+ case 0x28:
+ return 8;
+ case 0x29:
+ return 10;
+ case 0x30:
+ return 32;
+ case 0x34:
+ return 56;
+ case 0x36:
+ return 64;
+ case 0x60:
+ return 1;
+ case 0xa0:
+ return 1;
+ default:
+ return -1;
+ }
+}
+
+char get_line_data_rate_unit(unsigned char line_rate)
+{
+ switch (line_rate) {
+ case 0x00:
+ return 0;
+ case 0x01:
+ return 0;
+ case 0x05:
+ return 0;
+ case 0x06:
+ return 0;
+ case 0x14:
+ return 0;
+ case 0x15:
+ return 0;
+ case 0x20:
+ return 'k';
+ case 0x28:
+ return 'k';
+ case 0x29:
+ return 'k';
+ case 0x30:
+ return 'k';
+ case 0x34:
+ return 'k';
+ case 0x36:
+ return 'k';
+ case 0x60:
+ return 'M';
+ case 0xa0:
+ return 'G';
+ default:
+ return 0;
+ }
+}
+
+int print_line_type(unsigned char type, char *buf, int pos)
+{
+ DBG_PRINT("print_line_type %c\n", type);
+ switch (type) {
+ case 0:
+ pos += sprintf(buf + pos, "NONE");
+ break;
+ case 1:
+ pos += sprintf(buf + pos, "DCombus management bus");
+ break;
+ case 2:
+ pos += sprintf(buf + pos, "V.24");
+ break;
+ case 3:
+ pos += sprintf(buf + pos, "X.21");
+ break;
+ case 4:
+ pos += sprintf(buf + pos, "V.35");
+ break;
+ case 5:
+ pos += sprintf(buf + pos, "V.11");
+ break;
+ case 6:
+ pos += sprintf(buf + pos, "IDSL (ISDN Basic Rate");
+ break;
+ case 7:
+ pos += sprintf(buf + pos, "E1 nonframed/framed");
+ break;
+ case 8:
+ pos += sprintf(buf + pos, "E2 nonframed/framed");
+ break;
+ case 9:
+ pos += sprintf(buf + pos, "E3 nonframed/framed");
+ break;
+ case 10:
+ pos += sprintf(buf + pos, "T1 nonframed/framed");
+ break;
+ case 11:
+ pos += sprintf(buf + pos, "T2 nonframed/framed");
+ break;
+ case 12:
+ pos += sprintf(buf + pos, "T3 nonframed/framed");
+ break;
+ case 13:
+ pos += sprintf(buf + pos, "HDSL");
+ break;
+ case 14:
+ pos += sprintf(buf + pos, "ADSL");
+ break;
+ case 15:
+ pos += sprintf(buf + pos, "SDSL");
+ break;
+ case 16:
+ pos += sprintf(buf + pos, "HDSL2");
+ break;
+ case 17:
+ pos += sprintf(buf + pos, "VDSL");
+ break;
+ case 18:
+ pos += sprintf(buf + pos, "G.shdsl");
+ break;
+ case 19:
+ pos += sprintf(buf + pos, "SDH");
+ break;
+ case 255:
+ pos +=
+ sprintf(buf + pos, "COMBINATION, get list using mailbox");
+ break;
+ default:
+ pos += sprintf(buf + pos, "reserved");
+ }
+ return pos;
+}
+
+int print_card_type(unsigned char type, char *buf, int pos)
+{
+ DBG_PRINT("print_card_type\n");
+ switch (type) {
+ case 0x00:
+ pos += sprintf(buf + pos, "illegal ");
+ break;
+ case 0x01:
+ case 0x02:
+ pos += sprintf(buf + pos, "Retina ");
+ break;
+ default:
+ pos += sprintf(buf + pos, "reserved ");
+ }
+
+ return pos;
+}
+
+int print_card_model(unsigned char model, char *buf, int pos)
+{
+ DBG_PRINT("print_card_model\n");
+ switch (model) {
+ case 0x00:
+ pos += sprintf(buf + pos, "illegal ");
+ break;
+ case 0x01:
+ pos += sprintf(buf + pos, "E2200 ");
+ break;
+ case 0x02:
+ pos += sprintf(buf + pos, "C5400 ");
+ break;
+ default:
+ pos += sprintf(buf + pos, "reserved ");
+ }
+
+ return pos;
+}
+
+static inline u8 get_common_reg(void *ioaddr, unsigned long offsett)
+{
+ unsigned long byte = __test_and_clear_bit(0, &offsett);
+ u8 reg;
+ DBG_PRINT("get_common_reg %p, old %p\n",
+ ioaddr + FEPCI_IDENTIFICATION_OFFSETT + (offsett << 1) +
+ byte,
+ &((u32 *) (ioaddr +
+ FEPCI_IDENTIFICATION_OFFSETT))[offsett / 2]);
+ reg =
+ readb(ioaddr + FEPCI_IDENTIFICATION_OFFSETT + (offsett << 1) +
+ byte);
+ DBG_PRINT("get_common_reg %p: %u\n",
+ ioaddr + FEPCI_IDENTIFICATION_OFFSETT + (offsett << 1) +
+ byte, reg);
+ return reg;
+}
+
+static int fepci_proc_read_features(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ int pos = 0;
+ int tab = 0;
+ struct fepci_card_private *cardp;
+ void *ioaddr;
+
+ cardp = (struct fepci_card_private *)data;
+
+ down_read(&cardp->semaphore);
+
+ if (unlikely(cardp->pci_dev == NULL))
+ goto EOF;
+
+ ioaddr = cardp->ioaddr;
+
+ switch (offset) {
+ case 0:
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "card type: ");
+ pos = print_card_type(get_common_reg(ioaddr, 0x00), buf, pos);
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "model: ");
+ pos = print_card_model(get_common_reg(ioaddr, 0x00), buf, pos);
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "serial number: ");
+ pos +=
+ sprintf(buf + pos, "%2.2x", get_common_reg(ioaddr, 0x07));
+ pos +=
+ sprintf(buf + pos, "%2.2x", get_common_reg(ioaddr, 0x06));
+ pos +=
+ sprintf(buf + pos, "%2.2x", get_common_reg(ioaddr, 0x05));
+ pos +=
+ sprintf(buf + pos, "%2.2x\n", get_common_reg(ioaddr, 0x04));
+
+ pos += sprintf(buf + pos, "version: ");
+ pos +=
+ sprintf(buf + pos, "%2.2x.", get_common_reg(ioaddr, 0x08));
+ pos +=
+ sprintf(buf + pos, "%2.2x.", get_common_reg(ioaddr, 0x09));
+ pos +=
+ sprintf(buf + pos, "%2.2x.", get_common_reg(ioaddr, 0x0a));
+ pos +=
+ sprintf(buf + pos, "%2.2x\n", get_common_reg(ioaddr, 0x0b));
+
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "max. pipe count: ");
+ pos += sprintf(buf + pos, "%d\n", get_common_reg(ioaddr, 0x03));
+
+ up_read(&cardp->semaphore);
+ *start = (char *)1;
+ *eof = 1;
+ return min(pos, len);
+ case 1:
+ pos += sprintf(buf + pos, "line count: ");
+ pos += sprintf(buf + pos, "%d\n", get_common_reg(ioaddr, 0x02));
+
+ pos += sprintf(buf + pos, "line type: ");
+ pos = print_line_type(get_common_reg(ioaddr, 0x0c), buf, pos);
+
+ /* JT: Secondary interface is also printed also,
+ * if there is one. */
+ if (get_common_reg(ioaddr, 0x10) > 0) {
+ pos += sprintf(buf + pos, " / ");
+ pos =
+ print_line_type(get_common_reg(ioaddr, 0x10),
+ buf, pos);
+ }
+
+ pos += sprintf(buf + pos, "\n");
+
+ /* JT: Line modes are printed only if
+ * the card has NO secondary interface. */
+ if (get_common_reg(ioaddr, 0x10) == 0) {
+ pos += sprintf(buf + pos, "line modes: ");
+ tab = 0;
+ if (get_common_reg(ioaddr, 0x21) & 0x80) {
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "framed mode supported\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x40) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "unframed mode supported\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x20) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "line code setting available\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x10) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "line attenuation available\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x08) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "line quality available\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x04) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "timing setting available\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x02) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos += sprintf(buf + pos, "reserved\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) & 0x01) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos +=
+ sprintf(buf + pos,
+ "line shutdown setting "
+ "available\n");
+ }
+ if (get_common_reg(ioaddr, 0x21) == 0) {
+ if (tab)
+ pos +=
+ sprintf(buf + pos,
+ " ");
+ else
+ tab = 1;
+ pos += sprintf(buf + pos, "n/a\n");
+ }
+ }
+ up_read(&cardp->semaphore);
+ *start = (char *)1;
+ *eof = 1;
+ return min(pos, len);
+ case 2:
+ pos += sprintf(buf + pos, "line rate: ");
+ if (get_common_reg(ioaddr, 0x28) ==
+ get_common_reg(ioaddr, 0x2a)) {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26)) < 0)
+ pos += sprintf(buf + pos, "Invalid value");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))) {
+ pos += sprintf(buf + pos, "fixed ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))
+ * get_common_reg_word(ioaddr,
+ 0x28));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos, "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, "
+ "get value or list using mailbox");
+ } else {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26)) < 0)
+ pos += sprintf(buf + pos, "Invalid value");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))) {
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))
+ * get_common_reg_word(ioaddr,
+ 0x28));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos, "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps - ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))
+ * get_common_reg_word(ioaddr,
+ 0x2a));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos, "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, "
+ "get value or list using mailbox");
+ }
+
+ /* JT: Line rate of a secondary interface is printed,
+ * if there is one. */
+ if (get_common_reg(ioaddr, 0x10) > 0) {
+ pos += sprintf(buf + pos, " / ");
+
+ if (get_common_reg(ioaddr, 0x34) ==
+ get_common_reg(ioaddr, 0x36)) {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26)) < 0)
+ pos +=
+ sprintf(buf + pos, "Invalid value");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))) {
+ pos += sprintf(buf + pos, "fixed ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x26)) *
+ get_common_reg_word
+ (ioaddr, 0x34));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, "
+ "get value or "
+ "list using mailbox");
+ } else {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26)) < 0)
+ pos +=
+ sprintf(buf + pos, "Invalid value");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))) {
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x26)) *
+ get_common_reg_word
+ (ioaddr, 0x34));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps - ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x26)) *
+ get_common_reg_word
+ (ioaddr, 0x36));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, "
+ "get value or list "
+ "using mailbox");
+ }
+ }
+
+ pos += sprintf(buf + pos, "\n");
+
+ /* JT: Primary line special info is printed only
+ * if the card has NO secondary interface. */
+ if (get_common_reg(ioaddr, 0x10) == 0) {
+ pos += sprintf(buf + pos, "rate sel. methods: ");
+ if (get_common_reg(ioaddr, 0x28) ==
+ get_common_reg(ioaddr, 0x2a))
+ pos += sprintf(buf + pos, "n/a\n");
+ else if ((get_common_reg(ioaddr, 0x22) & 4)
+ && (get_common_reg(ioaddr, 0x23) & 4))
+ pos += sprintf(buf + pos, "adjust\n");
+ else if (((!get_common_reg(ioaddr, 0x22)) & 4)
+ && (get_common_reg(ioaddr, 0x23) & 4))
+ pos += sprintf(buf + pos, "adjust(framed)\n");
+ else if ((get_common_reg(ioaddr, 0x22) & 4)
+ && ((!get_common_reg(ioaddr, 0x23)) & 4))
+ pos += sprintf(buf + pos, "adjust(unframed)\n");
+ else
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "\n");
+
+ pos += sprintf(buf + pos, "unframed data rate: ");
+ if (get_common_reg(ioaddr, 0x30) ==
+ get_common_reg(ioaddr, 0x32)) {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27)) < 0)
+ pos +=
+ sprintf(buf + pos,
+ "Invalid value\n");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27))) {
+ pos += sprintf(buf + pos, "fixed ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x27)) *
+ get_common_reg_word
+ (ioaddr, 0x30));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x27)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x27)));
+ pos += sprintf(buf + pos, "bps\n");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, "
+ "get value or list using "
+ "mailbox\n");
+ } else {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27)) < 0)
+ pos +=
+ sprintf(buf + pos,
+ "Invalid value\n");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27))) {
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x27)) *
+ get_common_reg_word
+ (ioaddr, 0x30));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x27)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x27)));
+ pos += sprintf(buf + pos, "bps - ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x27)) *
+ get_common_reg_word
+ (ioaddr, 0x32));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x27)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x27)));
+ pos += sprintf(buf + pos, "bps\n");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, get value "
+ "or list using mailbox\n");
+ }
+ }
+ up_read(&cardp->semaphore);
+ *start = (char *)1;
+ *eof = 1;
+ return min(pos, len);
+
+ case 3:
+ /* JT: Line modes are printed only
+ * if the card has NO secondary interface. */
+ if (get_common_reg(ioaddr, 0x10) == 0) {
+ pos += sprintf(buf + pos, "rate sel. methods: ");
+ if (get_common_reg(ioaddr, 0x30) ==
+ get_common_reg(ioaddr, 0x32))
+ pos += sprintf(buf + pos, "n/a\n");
+ else {
+ if (get_common_reg(ioaddr, 0x23) & 1)
+ pos +=
+ sprintf(buf + pos,
+ "timeslot map\n");
+ if (get_common_reg(ioaddr, 0x23) & 2)
+ pos += sprintf(buf + pos, "adjust\n");
+ }
+
+ pos += sprintf(buf + pos, "framed data rate: ");
+ if (get_common_reg(ioaddr, 0x2c) ==
+ get_common_reg(ioaddr, 0x2e)) {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27)) < 0)
+ pos +=
+ sprintf(buf + pos,
+ "Invalid value\n");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27))) {
+ pos += sprintf(buf + pos, "fixed ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x27)) *
+ get_common_reg_word
+ (ioaddr, 0x2c));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x27)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x27)));
+ pos += sprintf(buf + pos, "bps\n");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, get value "
+ "or list using mailbox\n");
+ } else {
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27)) < 0)
+ pos +=
+ sprintf(buf + pos,
+ "Invalid value\n");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x27))) {
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x27)) *
+ get_common_reg_word
+ (ioaddr, 0x2c));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x27)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x27)));
+ pos += sprintf(buf + pos, "bps - ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x27)) *
+ get_common_reg_word
+ (ioaddr, 0x2e));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x27)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x27)));
+ pos += sprintf(buf + pos, "bps\n");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, get value "
+ "or list using mailbox\n");
+ }
+
+ pos += sprintf(buf + pos, "rate sel. methods: ");
+ if (get_common_reg_word(ioaddr, 0x2c) ==
+ get_common_reg_word(ioaddr, 0x2e))
+ pos += sprintf(buf + pos, "n/a\n");
+ else {
+ if (get_common_reg(ioaddr, 0x22) & 1)
+ pos +=
+ sprintf(buf + pos,
+ "timeslot map\n");
+ if (get_common_reg(ioaddr, 0x22) & 2)
+ pos += sprintf(buf + pos, "adjust\n");
+ }
+ }
+ up_read(&cardp->semaphore);
+ *start = (char *)1;
+ *eof = 1;
+ return min(pos, len);
+ default:
+ EOF:
+ up_read(&cardp->semaphore);
+ *start = (char *)0;
+ *eof = 1;
+ return 0;
+ }
+}
+
+static int fepci_proc_read_settings(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ int pos = 0;
+ int i, j;
+
+ struct fepci_card_private *cardp;
+ void *ioaddr;
+
+ cardp = (struct fepci_card_private *)data;
+
+ down_read(&cardp->semaphore);
+
+ if (unlikely(cardp->pci_dev == NULL))
+ goto EOF;
+
+ ioaddr = cardp->ioaddr;
+
+ switch (offset) {
+ case 0:
+ j = get_common_reg(ioaddr, 0x02);
+
+ for (i = 0; i < j; i++) {
+ if ((get_common_reg_word(ioaddr, 0x44) >> i) & 1) {
+ pos += sprintf(buf + pos, "\nline %2d\n", i);
+ pos += sprintf(buf + pos, "-------\n");
+ pos +=
+ sprintf(buf + pos, "mode: ");
+ if ((get_common_reg_word(ioaddr, 0x46) >>
+ i) & 1)
+ pos += sprintf(buf + pos, "framed\n");
+ else
+ pos += sprintf(buf + pos, "unframed\n");
+
+ pos +=
+ sprintf(buf + pos, "scrambler: ");
+ if ((get_common_reg_word(ioaddr, 0x48) >>
+ i) & 1)
+ pos += sprintf(buf + pos, "enabled\n");
+ else if ((get_common_reg_word(ioaddr, 0x46)
+ >> i) & 1)
+ pos += sprintf(buf + pos, "n/a\n");
+ else
+ pos += sprintf(buf + pos, "disabled\n");
+
+ pos +=
+ sprintf(buf + pos, "line crc: ");
+ if ((get_common_reg_word(ioaddr, 0x46) >>
+ i) & 1) {
+ if ((get_common_reg_word
+ (ioaddr, 0x4a) >> i) & 1)
+ pos +=
+ sprintf(buf + pos,
+ "enabled\n");
+ else if (get_common_reg
+ (ioaddr, 0x22) & 0x20)
+ pos +=
+ sprintf(buf + pos,
+ "disabled\n");
+ else
+ pos +=
+ sprintf(buf + pos, "n/a\n");
+ } else {
+ if ((get_common_reg_word
+ (ioaddr, 0x4a) >> i) & 1)
+ pos +=
+ sprintf(buf + pos,
+ "enabled\n");
+ else if (get_common_reg
+ (ioaddr, 0x23) & 0x20)
+ pos +=
+ sprintf(buf + pos,
+ "disabled\n");
+ else
+ pos +=
+ sprintf(buf + pos, "n/a\n");
+ }
+ }
+ }
+
+ /* If there are no enabled lines, "No enabled lines!" printed.
+ * The settings file would remain empty otherwise. */
+ if ((get_common_reg_word(ioaddr, 0x44)) == 0)
+ pos += sprintf(buf + pos, "No enabled lines!\n");
+ up_read(&cardp->semaphore);
+ *start = (char *)1;
+ *eof = 1;
+ return min(pos, len);
+ case 1:
+ j = get_common_reg(ioaddr, 0x03);
+
+ if ((get_common_reg_word(ioaddr, 0x44)) != 0) {
+ for (i = 0; i < j; i++) {
+ pos += sprintf(buf + pos, "\npipe %2d\n", i);
+ pos += sprintf(buf + pos, "-------\n");
+
+ pos +=
+ sprintf(buf + pos, "access mode: ");
+ if ((get_common_reg_word(ioaddr, 0x4e) >>
+ i) & 1)
+ pos += sprintf(buf + pos, "packet\n");
+ else
+ pos += sprintf(buf + pos, "stream\n");
+
+ pos +=
+ sprintf(buf + pos, "data rate: ");
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x42)) < 0)
+ pos +=
+ sprintf(buf + pos,
+ "Invalid value\n");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x42))) {
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x42)) *
+ get_common_reg_word
+ (ioaddr, 0x50 + 2 * i));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x42)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x42)));
+ pos += sprintf(buf + pos, "bps\n");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, get value "
+ "or list using mailbox\n");
+ }
+ }
+ up_read(&cardp->semaphore);
+ *start = (char *)1;
+ *eof = 1;
+ return min(pos, len);
+ default:
+ EOF:
+ up_read(&cardp->semaphore);
+ *start = (char *)0;
+ *eof = 1;
+ return 0;
+ }
+}
+
+void proc_cpy(char *buf_from, char *buf_to, int len)
+{
+ int i;
+ for (i = 0; i < len; i++)
+ *(buf_to + i) = *(buf_from + i);
+}
+
+static int fepci_proc_read_status(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ unsigned int pos = 0;
+ unsigned int i, j;
+
+ struct fepci_card_private *cardp;
+
+ void *ioaddr;
+
+ struct fepci_ch_private *fp;
+
+ cardp = (struct fepci_card_private *)data;
+
+ down_read(&cardp->semaphore);
+
+ if (unlikely(cardp->pci_dev == NULL))
+ goto EOF;
+
+ ioaddr = cardp->ioaddr;
+
+ if ((offset & 0xff000) == 0) {
+ j = get_common_reg(ioaddr, 0x02);
+ for (i = 0; i < j; i++) {
+ pos += sprintf(buf + pos, "\nline %2d\n", i);
+ pos += sprintf(buf + pos, "-------\n");
+ pos += sprintf(buf + pos, "status: ");
+ if ((get_common_reg_word(ioaddr, 0x72) >> i) & 1) {
+ pos += sprintf(buf + pos, "DOWN\n");
+ netif_carrier_off(cardp->ch_privates[i]->
+ this_dev);
+ } else {
+ netif_carrier_on(cardp->ch_privates[i]->
+ this_dev);
+ if ((get_common_reg_word(ioaddr, 0x74) >>
+ i) & 1)
+ pos += sprintf(buf + pos, "UP/Alarm\n");
+ else
+ pos += sprintf(buf + pos, "UP\n");
+ }
+ pos += sprintf(buf + pos, "primary clock: ");
+ if ((get_common_reg_word(ioaddr, 0x76) >> i) & 1)
+ pos += sprintf(buf + pos, "OK\n");
+ else
+ pos += sprintf(buf + pos, "FAIL\n");
+ }
+ up_read(&cardp->semaphore);
+ if (pos - (0xfff & offset) > (unsigned)len)
+ *start = (char *)len;
+ else
+ *start = (char *)(0x1000 - (offset & 0xfff));
+ proc_cpy(buf + (offset & 0xfff), buf, len);
+ return min((int)(pos - (0xfff & offset)), len);
+ }
+
+ j = get_common_reg(ioaddr, 0x03);
+ if ((j <= 0) || (j > 16))
+ j = 16;
+ if ((((((unsigned)offset) & 0xff000) >> 12) > 0) &&
+ (((((unsigned)offset) & 0xff000) >> 12) <= j)) {
+ i = ((int)((offset & 0xff000) >> 12)) - 1;
+ if (i < CHANNELS) {
+ pos += sprintf(buf + pos, "\npipe %2d\n", i);
+ pos += sprintf(buf + pos, "-------\n");
+ pos += sprintf(buf + pos, "status: ");
+
+ if (!((get_common_reg_word(ioaddr, 0x78) >> i) & 1))
+ pos += sprintf(buf + pos, "DOWN\n");
+ else if ((get_common_reg_word(ioaddr, 0x7a) >> i) & 1)
+ pos += sprintf(buf + pos, "UP/Degraded\n");
+ else
+ pos += sprintf(buf + pos, "UP\n");
+ if ((get_common_reg_word(ioaddr, 0x4e) >> i) & 1) {
+ pos +=
+ sprintf(buf + pos, "packet counters:\n\n");
+ pos +=
+ sprintf(buf + pos, "rx count: %lu \n",
+ cardp->ch_privates[i]->stats.
+ rx_packets);
+ pos +=
+ sprintf(buf + pos, "rx data: %lu \n",
+ cardp->ch_privates[i]->stats.
+ rx_bytes);
+ pos +=
+ sprintf(buf + pos, "rx errors:%lu \n",
+ cardp->ch_privates[i]->stats.
+ rx_errors);
+ pos +=
+ sprintf(buf + pos, "tx count: %lu \n",
+ cardp->ch_privates[i]->stats.
+ tx_packets);
+ pos +=
+ sprintf(buf + pos, "tx data: %lu \n",
+ cardp->ch_privates[i]->stats.
+ tx_bytes);
+ pos +=
+ sprintf(buf + pos, "tx errors:%lu \n",
+ cardp->ch_privates[i]->stats.
+ tx_errors);
+ } else {
+ pos +=
+ sprintf(buf + pos, "stream counters:\n\n");
+ fp = cardp->ch_privates[i];
+ pos += sprintf(buf + pos,
+ "rx_desc_fifo_err_stream : %10u"
+ " \n",
+ fp->rx_desc_fifo_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "rx_desc_size_err_stream : %10u"
+ " \n",
+ fp->rx_desc_size_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "rx_desc_octet_err_stream : %9u"
+ " \n",
+ fp->rx_desc_octet_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "rx_desc_line_err_stream : %10u"
+ " \n",
+ fp->rx_desc_line_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "tx_desc_fifo_err_stream : %10u"
+ " \n",
+ fp->tx_desc_fifo_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "rx_int_fifo_err_stream : %11u \n",
+ fp->rx_int_fifo_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "rx_int_frame_dropped_err_stream :"
+ " %2u \n",
+ fp->
+ rx_int_frame_dropped_err_stream);
+ pos +=
+ sprintf(buf + pos,
+ "tx_int_fifo_err_stream : %11u \n",
+ fp->tx_int_fifo_err_stream);
+ }
+ if (pos - (0xfff & offset) > (unsigned)len)
+ *start = (char *)len;
+ else
+ *start = (char *)(0x1000 - (offset & 0xfff));
+ proc_cpy(buf + (offset & 0xfff), buf, len);
+ }
+ up_read(&cardp->semaphore);
+ return min((int)(pos - (0xfff & offset)), len);
+ } else {
+ EOF:
+ up_read(&cardp->semaphore);
+ *start = (char *)0;
+ *eof = 1;
+ return 0;
+ }
+}
+
+static int fepci_proc_read_devices(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ void *ioaddr;
+ unsigned int pos = 0;
+ unsigned int i;
+
+ pos +=
+ sprintf(buf + pos,
+ "bus:card.function cardtype model lines, max rate\n");
+ for (i = 0; i < find_cnt; i++) {
+ down_read(&card_privates[i].semaphore);
+ if (likely(card_privates[i].pci_dev)) { /* the card exists */
+ pos +=
+ sprintf(buf + pos,
+ "%02x:%s ",
+ card_privates[i].pci_dev->bus->
+ number,
+ card_privates[i].pci_dev->procent->name);
+ ioaddr = card_privates[i].ioaddr;
+ pos =
+ print_card_type(get_common_reg
+ (ioaddr, 0x00), buf, pos);
+ pos =
+ print_card_model(get_common_reg
+ (ioaddr, 0x00), buf, pos);
+ pos +=
+ sprintf(buf + pos, "%d",
+ get_common_reg(ioaddr, 0x02));
+ pos += sprintf(buf + pos, " x ");
+ pos =
+ print_line_type(get_common_reg
+ (ioaddr, 0x0c), buf, pos);
+ if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26)) < 0)
+ pos += sprintf(buf + pos, "Invalid value\n");
+ else if (get_line_data_rate_value
+ (get_common_reg(ioaddr, 0x26))) {
+ pos += sprintf(buf + pos, ", total ");
+ pos +=
+ sprintf(buf + pos, "%d ",
+ get_line_data_rate_value
+ (get_common_reg
+ (ioaddr,
+ 0x26)) *
+ get_common_reg_word
+ (ioaddr,
+ 0x2a) *
+ get_common_reg(ioaddr, 0x02));
+ if (get_line_data_rate_unit
+ (get_common_reg(ioaddr, 0x26)))
+ pos +=
+ sprintf(buf + pos,
+ "%c",
+ get_line_data_rate_unit
+ (get_common_reg
+ (ioaddr, 0x26)));
+ pos += sprintf(buf + pos, "bps\n");
+ } else
+ pos +=
+ sprintf(buf + pos,
+ "No multiplier, get value or list "
+ "using mailbox\n");
+
+ }
+ up_read(&card_privates[i].semaphore);
+ }
+ DBG_PRINT("fepci_proc_read_devices pos %u < %lu?\n", pos, PAGE_SIZE);
+ *eof = 1;
+ return pos;
+}
+
+static int fepci_proc_read_id_list(char *buf, char **start, off_t offset,
+ int len, int *eof, void *data)
+{
+ unsigned int pos = 0;
+ unsigned int i;
+
+ pos += sprintf(buf + pos, "bus:card.function major minor interfaces\n");
+ for (i = 0; i < find_cnt; i++) {
+ down_read(&card_privates[i].semaphore);
+ if (likely(card_privates[i].pci_dev)) /* the card exists */
+ pos +=
+ sprintf(buf + pos,
+ "%02x:%s %03i %03i %s..%s\n",
+ card_privates[i].pci_dev->bus->
+ number,
+ card_privates[i].pci_dev->
+ procent->name, major,
+ card_privates[i].
+ ch_privates[0]->minor,
+ card_privates[i].
+ ch_privates[0]->this_dev->name,
+ card_privates[i].
+ ch_privates[CHANNELS - 1]->this_dev->name);
+ up_read(&card_privates[i].semaphore);
+ }
+
+ pos += sprintf(buf + pos, "\n");
+ DBG_PRINT("fepci_proc_read_id_list pos %u < %lu?\n", pos, PAGE_SIZE);
+ *eof = 1;
+ return pos;
+}
+
+const static char DEVICES[] = "devices";
+const static char ID_LIST[] = "id_list";
+
+static int fepci_proc_init_driver(void)
+{
+ DBG_PRINT("fepci_proc_init_driver\n");
+ proc_root_entry = create_proc_entry(fepci_proc_entry_name, S_IFDIR, 0);
+ if (!proc_root_entry)
+ printk(KERN_WARNING
+ "%s: creating proc root dir entry failed.\n",
+ fepci_NAME);
+
+ create_proc_read_entry(DEVICES, 0, proc_root_entry,
+ fepci_proc_read_devices, NULL);
+ create_proc_read_entry(ID_LIST, 0, proc_root_entry,
+ fepci_proc_read_id_list, NULL);
+
+ return 0;
+}
+
+static void fepci_proc_cleanup_driver(void)
+{
+ char name[sizeof(fepci_proc_entry_name) + sizeof(DEVICES)];
+ strcpy(name, fepci_proc_entry_name);
+ name[sizeof(fepci_proc_entry_name) - 1] = '/';
+ strcpy(name + sizeof(fepci_proc_entry_name), DEVICES);
+ remove_proc_entry(name, 0);
+ strcpy(name + sizeof(fepci_proc_entry_name), ID_LIST);
+ remove_proc_entry(name, 0);
+ remove_proc_entry(fepci_proc_entry_name, 0);
+}
+
+static void fepci_proc_init_card(int card_number, void *card_data)
+{
+ char buf[50];
+ struct proc_dir_entry *ent;
+ sprintf(buf, "%02x:%02x.%02x",
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+
+ ent = create_proc_entry(buf, S_IFDIR, proc_root_entry);
+ if (!ent)
+ printk("%s: creating proc dir entry failed.\n", fepci_NAME);
+
+ sprintf(buf, fepci_features_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+
+ create_proc_read_entry(buf, 0, NULL, fepci_proc_read_features,
+ card_data);
+
+ sprintf(buf, fepci_settings_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+ create_proc_read_entry(buf, 0, NULL, fepci_proc_read_settings,
+ card_data);
+
+ sprintf(buf, fepci_status_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+ create_proc_read_entry(buf, 0, NULL, fepci_proc_read_status, card_data);
+}
+
+static void fepci_proc_cleanup_card(int card_number)
+{
+ char buf[50];
+
+ sprintf(buf, fepci_features_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+ remove_proc_entry(buf, 0);
+ sprintf(buf, fepci_settings_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+ remove_proc_entry(buf, 0);
+ sprintf(buf, fepci_status_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+ remove_proc_entry(buf, 0);
+
+ sprintf(buf, "%02x:%02x.%02x",
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn));
+
+ remove_proc_entry(buf, proc_root_entry);
+}
+
+#ifdef DEBUG_PROC_FILES
+static void fepci_proc_init_channel(int card_number, int channel_number,
+ void *channel_data)
+{
+ DBG_PRINT("fepci_proc_init_channel\n");
+ char buf[50];
+
+ sprintf(buf, fepci_counters_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+
+ create_proc_read_entry(buf, 0, NULL, fepci_proc_read_counters,
+ channel_data);
+
+ sprintf(buf, fepci_descriptors_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+
+ create_proc_read_entry(buf, 0, NULL, fepci_proc_read_descriptors,
+ channel_data);
+
+ sprintf(buf, fepci_stream_counters_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+
+ create_proc_read_entry(buf, 0, NULL,
+ fepci_proc_read_stream_counters, channel_data);
+
+ sprintf(buf, fepci_registers_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+ create_proc_read_entry(buf, 0, NULL, fepci_proc_read_registers,
+ channel_data);
+}
+
+static void fepci_proc_cleanup_channel(int card_number, int channel_number)
+{
+ char buf[50];
+ sprintf(buf, fepci_counters_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+ remove_proc_entry(buf, 0);
+
+ sprintf(buf, fepci_descriptors_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+ remove_proc_entry(buf, 0);
+
+ sprintf(buf, fepci_stream_counters_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+ remove_proc_entry(buf, 0);
+
+ sprintf(buf, fepci_registers_proc_entry_name,
+ card_privates[card_number].pci_dev->bus->number,
+ PCI_SLOT(card_privates[card_number].pci_dev->devfn),
+ PCI_FUNC(card_privates[card_number].pci_dev->devfn),
+ channel_number);
+ remove_proc_entry(buf, 0);
+}
+#endif /* DEBUG_PROC_FILES */
diff -Napur linux-2.6.23/drivers/net/wan/retina.h linux-2.6.24/drivers/net/wan/retina.h
--- linux-2.6.23/drivers/net/wan/retina.h 1970-01-01 02:00:00.000000000 +0200
+++ linux-2.6.24/drivers/net/wan/retina.h 2007-10-22 12:01:44.856033562 +0300
@@ -0,0 +1,164 @@
+/* V1.0.0 */
+
+/*
+ Copyright (C) 2002-2003 Jouni Kujala, Flexibilis Oy.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ All the drivers derived from or based on this code fall under the
+ GPL and must retain the copyright and license notice.
+*/
+
+#ifndef RETINA_H
+#define RETINA_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/* net device related stuff: */
+#define FEPCI_NETDEV_IOCTL_STREAM_BUFSIZE 0x89F1
+#define FEPCI_NETDEV_IOCTL_STREAM_UNITSIZE 0x89F2
+#define FEPCI_NETDEV_IOCTL_STREAM_OPEN 0x89F3
+#define FEPCI_NETDEV_IOCTL_STREAM_START 0x89F4
+#define FEPCI_NETDEV_IOCTL_STREAM_CLOSE 0x89F6
+
+/* char device related stuff: */
+
+#define FEPCI_SHARED_MEM_OFFSETT 0x8000
+#define FEPCI_IDENTIFICATION_OFFSETT (FEPCI_SHARED_MEM_OFFSETT+0x0)
+#define FEPCI_FEATURES_OFFSETT (FEPCI_SHARED_MEM_OFFSETT+0x40)
+#define FEPCI_SETTINGS_OFFSETT (FEPCI_SHARED_MEM_OFFSETT+0x80)
+#define FEPCI_STATUS_OFFSETT (FEPCI_SHARED_MEM_OFFSETT+0xE0)
+#define FEPCI_MAILBOX_OFFSETT (FEPCI_SHARED_MEM_OFFSETT+0x100)
+
+/* structures for ioctl calls: */
+struct fepci_ioctl_identification {
+ unsigned char data[0x20];
+};
+struct fepci_real_identification {
+ unsigned long int data[0x10];
+};
+
+struct fepci_ioctl_features {
+ unsigned char data[0x20];
+};
+struct fepci_real_features {
+ unsigned long int data[0x10];
+};
+
+struct fepci_ioctl_settings {
+ unsigned char data[0x30];
+};
+struct fepci_real_settings {
+ unsigned long int data[0x15];
+};
+
+struct fepci_ioctl_status {
+ unsigned char data[0x10];
+};
+struct fepci_real_status {
+ unsigned long int data[0x5];
+};
+
+struct fepci_ioctl_shared_mem {
+ unsigned long int data[0x80];
+};
+
+#define FEPCI_IOCTL_MAGIC 0xAA
+
+#define FEPCI_IOCTL_R_SHARED_MEM _IOR(FEPCI_IOCTL_MAGIC, 1, \
+struct fepci_ioctl_shared_mem)
+#define FEPCI_IOCTL_W_SHARED_MEM _IOW(FEPCI_IOCTL_MAGIC, 2, \
+struct fepci_ioctl_shared_mem)
+
+#define FEPCI_IOCTL_G_IDENTIFICATION _IOR(FEPCI_IOCTL_MAGIC, 0x81, \
+struct fepci_ioctl_identification)
+#define FEPCI_IOCTL_G_FEATURES _IOR(FEPCI_IOCTL_MAGIC, 0x82, \
+struct fepci_ioctl_features)
+#define FEPCI_IOCTL_G_SETTINGS _IOR(FEPCI_IOCTL_MAGIC, 0x83, \
+struct fepci_ioctl_settings)
+#define FEPCI_IOCTL_G_STATUS _IOR(FEPCI_IOCTL_MAGIC, 0x84, \
+struct fepci_ioctl_status)
+
+/* mailbox: */
+
+struct fepci_ioctl_mailbox {
+ unsigned char Semafore;
+ unsigned char Mail_number;
+ unsigned char Size;
+ unsigned char Command;
+ unsigned char Data[112];
+};
+
+struct fepci_real_mailbox {
+ __u32 Semafore_Mail_number;
+ __u32 Size_Command;
+ __u32 Data[112 / 2];
+};
+
+#define FEPCI_IOCTL_B_POLL _IO(FEPCI_IOCTL_MAGIC, 0x85)
+#define FEPCI_IOCTL_B_GRAB _IO(FEPCI_IOCTL_MAGIC, 0x86)
+#define FEPCI_IOCTL_B_RELEASE _IO(FEPCI_IOCTL_MAGIC, 0x87)
+#define FEPCI_IOCTL_B_S_CMAIL _IOW(FEPCI_IOCTL_MAGIC, 0x88, \
+struct fepci_ioctl_mailbox)
+#define FEPCI_IOCTL_B_S_QMAIL _IOW(FEPCI_IOCTL_MAGIC, 0x89, \
+struct fepci_ioctl_mailbox)
+#define FEPCI_IOCTL_B_G_MAIL _IOR(FEPCI_IOCTL_MAGIC, 0x90, \
+struct fepci_ioctl_mailbox)
+
+#define FEPCI_IOCTL_ALARM_MANAGER _IO(FEPCI_IOCTL_MAGIC, 0x91)
+#define FEPCI_IOCTL_STREAM_TRANSMIT_POLL _IO(FEPCI_IOCTL_MAGIC, 0x92)
+#define FEPCI_IOCTL_STREAM_RECEIVE_POLL _IO(FEPCI_IOCTL_MAGIC, 0x93)
+#define FEPCI_IOCTL_STREAM_BOTH_POLL _IO(FEPCI_IOCTL_MAGIC, 0x94)
+
+/* stream related stuff: */
+
+/* stream buffer address space:
+ * address: 0x 7 6 5 4 3 2 1 0
+ * ^ ^ ^
+ * | | |
+ * card | area(rx/tx,0==rx,1==tx)
+ * channel */
+
+#define CARD_ADDRESS_SHIFT 24u
+#define CHANNEL_ADDRESS_SHIFT 20u
+#define AREA_ADDRESS_SHIFT 16u
+
+#define STREAM_BUFFER_POINTER_AREA 0x7fff0000 /* one page reserved */
+
+/* stream buffer pointers (at pointer area):
+ * address: 0x 7 6 5 4 3 2 1 0
+ * ^ ^ ^
+ * | | |
+ * card | area(rx/tx,0==rx,4==tx)
+ * channel */
+
+#define CARD_POINTER_SHIFT 8u
+#define CHANNEL_POINTER_SHIFT 4u
+#define AREA_POINTER_SHIFT 2u
+
+/* fake pointers are for faking larger unit sizes to the user than
+ * what is the maximum internal unit size in FEPCI */
+#define USER_RX_S_FAKE_POINTER(__card, __channel, __offset) \
+((u32 *)(((__card << CARD_POINTER_SHIFT) | \
+(__channel << CHANNEL_POINTER_SHIFT) | 0x0) + __offset))
+#define USER_TX_S_FAKE_POINTER(__card, __channel, __offset) \
+((u32 *)(((__card << CARD_POINTER_SHIFT) | \
+(__channel << CHANNEL_POINTER_SHIFT) | 0x4) + __offset))
+
+#define USER_RX_S_POINTER(__card, __channel, __offset) \
+((u32 *)(((__card << CARD_POINTER_SHIFT) | \
+(__channel << CHANNEL_POINTER_SHIFT) | 0x8) + __offset))
+#define USER_TX_S_POINTER(__card, __channel, __offset) \
+((u32 *)(((__card << CARD_POINTER_SHIFT) | \
+(__channel << CHANNEL_POINTER_SHIFT) | 0xC) + __offset))
+
+#endif
diff -Napur linux-2.6.23/MAINTAINERS linux-2.6.24/MAINTAINERS
--- linux-2.6.23/MAINTAINERS 2007-10-09 23:31:38.000000000 +0300
+++ linux-2.6.24/MAINTAINERS 2007-10-22 11:50:13.190983316 +0300
@@ -3149,6 +3149,11 @@ L: reiserfs-devel@vger.kernel.org
W: http://www.namesys.com
S: Supported
+RETINA DRIVER
+P: Matti Linnanvuori
+M: mattilinnanvuori@yahoo.com
+S: Supported
+
ROCKETPORT DRIVER
P: Comtrol Corp.
W: http://www.comtrol.com
Heute schon einen Blick in die Zukunft von E-Mails wagen? www.yahoo.de/mail
^ permalink raw reply
* Re: net: alignment problem in icmp code
From: Pierre Ossman @ 2007-10-22 9:26 UTC (permalink / raw)
To: David Miller; +Cc: netdev
In-Reply-To: <20071022.020538.74751031.davem@davemloft.net>
[-- Attachment #1: Type: text/plain, Size: 1235 bytes --]
On Mon, 22 Oct 2007 02:05:38 -0700 (PDT)
David Miller <davem@davemloft.net> wrote:
> From: Pierre Ossman <drzeus@drzeus.cx>
> Date: Mon, 22 Oct 2007 10:42:08 +0200
>
> > This seems like a rather evil layering violation.
>
> This has a 10+ year precedence and it's why the Linux networking stack
> is so fast. If you read any other driver you would have seen the
> skb_reserve() call every one of them do to align the headers.
>
The norm seems to be to not comment this call. It's hardly obvious.
> I think I've tolerated this long enough.
>
> Are you going keep teaching me how the C language works, how GCC
> interprets it, and how evil the Linux networking is, or are you going
> to fix the bug in your driver? :-)
Settle down, "bug" fixed even before this discussion even began. I just don't like papering over problems so I want to know why this is needed and if it isn't indicative of a larger problem. If you don't want the discussions, make sure people know the gotchas.
(And I wasn't try to teach anyone. I was giving my view on things, and if you think I'm off my meds, feel free to say so. Groveling and excessively putting every statement as a question demeans us both. ;))
Rgds
Pierre
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply
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