* [patch 1/5] ipv6: make flowlabel to return an error
2007-12-10 15:09 [patch 0/5] ipv6: make af_inet6 subsystems to return an error at init Daniel Lezcano
@ 2007-12-10 15:09 ` Daniel Lezcano
2007-12-11 10:23 ` David Miller
2007-12-10 15:09 ` [patch 2/5] ipv6: make extended headers to return an error at initialization Daniel Lezcano
` (4 subsequent siblings)
5 siblings, 1 reply; 13+ messages in thread
From: Daniel Lezcano @ 2007-12-10 15:09 UTC (permalink / raw)
To: davem; +Cc: yoshfuji, pekkas, netdev
[-- Attachment #1: make-ip6-flowlabel-init-return-an-error-code.patch --]
[-- Type: text/plain, Size: 2837 bytes --]
This patch makes the flowlab subsystem to return an error code and makes
some cleanup with procfs ifdefs.
The af_inet6 will use the flowlabel init return code to check the initialization
was correct.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
---
include/net/ipv6.h | 2 +-
net/ipv6/af_inet6.c | 5 ++++-
net/ipv6/ip6_flowlabel.c | 30 +++++++++++++++++++++++-------
3 files changed, 28 insertions(+), 9 deletions(-)
Index: net-2.6.25/include/net/ipv6.h
===================================================================
--- net-2.6.25.orig/include/net/ipv6.h
+++ net-2.6.25/include/net/ipv6.h
@@ -219,7 +219,7 @@ extern struct ipv6_txoptions *fl6_merge_
struct ipv6_txoptions * fopt);
extern void fl6_free_socklist(struct sock *sk);
extern int ipv6_flowlabel_opt(struct sock *sk, char __user *optval, int optlen);
-extern void ip6_flowlabel_init(void);
+extern int ip6_flowlabel_init(void);
extern void ip6_flowlabel_cleanup(void);
static inline void fl6_sock_release(struct ip6_flowlabel *fl)
Index: net-2.6.25/net/ipv6/af_inet6.c
===================================================================
--- net-2.6.25.orig/net/ipv6/af_inet6.c
+++ net-2.6.25/net/ipv6/af_inet6.c
@@ -851,7 +851,9 @@ static int __init inet6_init(void)
err = ip6_route_init();
if (err)
goto ip6_route_fail;
- ip6_flowlabel_init();
+ err = ip6_flowlabel_init();
+ if (err)
+ goto ip6_flowlabel_fail;
err = addrconf_init();
if (err)
goto addrconf_fail;
@@ -874,6 +876,7 @@ out:
addrconf_fail:
ip6_flowlabel_cleanup();
+ip6_flowlabel_fail:
ip6_route_cleanup();
ip6_route_fail:
#ifdef CONFIG_PROC_FS
Index: net-2.6.25/net/ipv6/ip6_flowlabel.c
===================================================================
--- net-2.6.25.orig/net/ipv6/ip6_flowlabel.c
+++ net-2.6.25/net/ipv6/ip6_flowlabel.c
@@ -692,20 +692,36 @@ static const struct file_operations ip6f
.llseek = seq_lseek,
.release = seq_release_private,
};
-#endif
+static int ip6_flowlabel_proc_init(struct net *net)
+{
+ if (!proc_net_fops_create(net, "ip6_flowlabel", S_IRUGO, &ip6fl_seq_fops))
+ return -ENOMEM;
+ return 0;
+}
-void ip6_flowlabel_init(void)
+static void ip6_flowlabel_proc_fini(struct net *net)
{
-#ifdef CONFIG_PROC_FS
- proc_net_fops_create(&init_net, "ip6_flowlabel", S_IRUGO, &ip6fl_seq_fops);
+ proc_net_remove(net, "ip6_flowlabel");
+}
+#else
+static inline int ip6_flowlabel_proc_init(struct net *net)
+{
+ return 0;
+}
+static inline void ip6_flowlabel_proc_fini(struct net *net)
+{
+ return ;
+}
#endif
+
+int ip6_flowlabel_init(void)
+{
+ return ip6_flowlabel_proc_init(&init_net);
}
void ip6_flowlabel_cleanup(void)
{
del_timer(&ip6_fl_gc_timer);
-#ifdef CONFIG_PROC_FS
- proc_net_remove(&init_net, "ip6_flowlabel");
-#endif
+ ip6_flowlabel_proc_fini(&init_net);
}
--
^ permalink raw reply [flat|nested] 13+ messages in thread* [patch 2/5] ipv6: make extended headers to return an error at initialization
2007-12-10 15:09 [patch 0/5] ipv6: make af_inet6 subsystems to return an error at init Daniel Lezcano
2007-12-10 15:09 ` [patch 1/5] ipv6: make flowlabel to return an error Daniel Lezcano
@ 2007-12-10 15:09 ` Daniel Lezcano
2007-12-11 10:24 ` David Miller
2007-12-10 15:09 ` [patch 3/5] ipv6: make frag " Daniel Lezcano
` (3 subsequent siblings)
5 siblings, 1 reply; 13+ messages in thread
From: Daniel Lezcano @ 2007-12-10 15:09 UTC (permalink / raw)
To: davem; +Cc: yoshfuji, pekkas, netdev
[-- Attachment #1: make-ip6-exthdrs-init-return-an-error.patch --]
[-- Type: text/plain, Size: 4320 bytes --]
This patch factorize the code for the differents init functions for rthdr,
nodata, destopt in a single function exthdrs_init.
This function returns an error so the af_inet6 module can check correctly
the initialization.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
---
include/net/transp_v6.h | 5 +--
net/ipv6/af_inet6.c | 10 +++++--
net/ipv6/exthdrs.c | 64 +++++++++++++++++++++++++++++-------------------
3 files changed, 48 insertions(+), 31 deletions(-)
Index: net-2.6.25/include/net/transp_v6.h
===================================================================
--- net-2.6.25.orig/include/net/transp_v6.h
+++ net-2.6.25/include/net/transp_v6.h
@@ -17,10 +17,9 @@ extern struct proto tcpv6_prot;
struct flowi;
/* extention headers */
-extern void ipv6_rthdr_init(void);
+extern int ipv6_exthdrs_init(void);
+extern void ipv6_exthdrs_exit(void);
extern void ipv6_frag_init(void);
-extern void ipv6_nodata_init(void);
-extern void ipv6_destopt_init(void);
/* transport protocols */
extern void rawv6_init(void);
Index: net-2.6.25/net/ipv6/af_inet6.c
===================================================================
--- net-2.6.25.orig/net/ipv6/af_inet6.c
+++ net-2.6.25/net/ipv6/af_inet6.c
@@ -859,10 +859,11 @@ static int __init inet6_init(void)
goto addrconf_fail;
/* Init v6 extension headers. */
- ipv6_rthdr_init();
+ err = ipv6_exthdrs_init();
+ if (err)
+ goto ipv6_exthdrs_fail;
+
ipv6_frag_init();
- ipv6_nodata_init();
- ipv6_destopt_init();
/* Init v6 transport protocols. */
udpv6_init();
@@ -874,6 +875,8 @@ static int __init inet6_init(void)
out:
return err;
+ipv6_exthdrs_fail:
+ addrconf_cleanup();
addrconf_fail:
ip6_flowlabel_cleanup();
ip6_flowlabel_fail:
@@ -932,6 +935,7 @@ static void __exit inet6_exit(void)
/* Cleanup code parts. */
ipv6_packet_cleanup();
+ ipv6_exthdrs_exit();
addrconf_cleanup();
ip6_flowlabel_cleanup();
ip6_route_cleanup();
Index: net-2.6.25/net/ipv6/exthdrs.c
===================================================================
--- net-2.6.25.orig/net/ipv6/exthdrs.c
+++ net-2.6.25/net/ipv6/exthdrs.c
@@ -308,28 +308,6 @@ static int ipv6_destopt_rcv(struct sk_bu
return -1;
}
-static struct inet6_protocol destopt_protocol = {
- .handler = ipv6_destopt_rcv,
- .flags = INET6_PROTO_NOPOLICY | INET6_PROTO_GSO_EXTHDR,
-};
-
-void __init ipv6_destopt_init(void)
-{
- if (inet6_add_protocol(&destopt_protocol, IPPROTO_DSTOPTS) < 0)
- printk(KERN_ERR "ipv6_destopt_init: Could not register protocol\n");
-}
-
-static struct inet6_protocol nodata_protocol = {
- .handler = dst_discard,
- .flags = INET6_PROTO_NOPOLICY,
-};
-
-void __init ipv6_nodata_init(void)
-{
- if (inet6_add_protocol(&nodata_protocol, IPPROTO_NONE) < 0)
- printk(KERN_ERR "ipv6_nodata_init: Could not register protocol\n");
-}
-
/********************************
Routing header.
********************************/
@@ -527,12 +505,48 @@ static struct inet6_protocol rthdr_proto
.flags = INET6_PROTO_NOPOLICY | INET6_PROTO_GSO_EXTHDR,
};
-void __init ipv6_rthdr_init(void)
+static struct inet6_protocol destopt_protocol = {
+ .handler = ipv6_destopt_rcv,
+ .flags = INET6_PROTO_NOPOLICY | INET6_PROTO_GSO_EXTHDR,
+};
+
+static struct inet6_protocol nodata_protocol = {
+ .handler = dst_discard,
+ .flags = INET6_PROTO_NOPOLICY,
+};
+
+int __init ipv6_exthdrs_init(void)
{
- if (inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING) < 0)
- printk(KERN_ERR "ipv6_rthdr_init: Could not register protocol\n");
+ int ret;
+
+ ret = inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING);
+ if (ret)
+ goto out;
+
+ ret = inet6_add_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
+ if (ret)
+ goto out_rthdr;
+
+ ret = inet6_add_protocol(&nodata_protocol, IPPROTO_NONE);
+ if (ret)
+ goto out_destopt;
+
+out:
+ return ret;
+out_rthdr:
+ inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);
+out_destopt:
+ inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
+ goto out;
};
+void ipv6_exthdrs_exit(void)
+{
+ inet6_del_protocol(&nodata_protocol, IPPROTO_NONE);
+ inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);
+ inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);
+}
+
/**********************************
Hop-by-hop options.
**********************************/
--
^ permalink raw reply [flat|nested] 13+ messages in thread* [patch 5/5] ipv6: make the protocol initialization to return an error code
2007-12-10 15:09 [patch 0/5] ipv6: make af_inet6 subsystems to return an error at init Daniel Lezcano
` (3 preceding siblings ...)
2007-12-10 15:09 ` [patch 4/5] ipv6: make inet6_register_protosw to return an error code Daniel Lezcano
@ 2007-12-10 15:09 ` Daniel Lezcano
2007-12-11 10:25 ` David Miller
2007-12-10 15:32 ` [patch 0/5] ipv6: make af_inet6 subsystems to return an error at init Daniel Lezcano
5 siblings, 1 reply; 13+ messages in thread
From: Daniel Lezcano @ 2007-12-10 15:09 UTC (permalink / raw)
To: davem; +Cc: yoshfuji, pekkas, netdev
[-- Attachment #1: make-protocol-init-to-return-an-error-code.patch --]
[-- Type: text/plain, Size: 11326 bytes --]
This patchset makes the different protocols to return an error code, so
the af_inet6 module can check the initialization was correct or not.
The raw6 was taken into account to be consistent with the rest of the
protocols, but the registration is at the same place.
Because the raw6 has its own init function, the proto and the ops structure
can be moved inside the raw6.c file.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
---
include/net/ipv6.h | 2 -
include/net/transp_v6.h | 12 ++++---
net/ipv6/af_inet6.c | 77 ++++++++++++++++++++---------------------------
net/ipv6/ipv6_sockglue.c | 3 +
net/ipv6/raw.c | 52 +++++++++++++++++++++++++++++++
net/ipv6/tcp_ipv6.c | 38 ++++++++++++++++++-----
net/ipv6/udp.c | 26 +++++++++++++--
net/ipv6/udplite.c | 25 ++++++++++++---
8 files changed, 169 insertions(+), 66 deletions(-)
Index: net-2.6.25/include/net/transp_v6.h
===================================================================
--- net-2.6.25.orig/include/net/transp_v6.h
+++ net-2.6.25/include/net/transp_v6.h
@@ -23,10 +23,14 @@ extern int ipv6_frag_init(void);
extern void ipv6_frag_exit(void);
/* transport protocols */
-extern void rawv6_init(void);
-extern void udpv6_init(void);
-extern void udplitev6_init(void);
-extern void tcpv6_init(void);
+extern int rawv6_init(void);
+extern void rawv6_exit(void);
+extern int udpv6_init(void);
+extern void udpv6_exit(void);
+extern int udplitev6_init(void);
+extern void udplitev6_exit(void);
+extern int tcpv6_init(void);
+extern void tcpv6_exit(void);
extern int udpv6_connect(struct sock *sk,
struct sockaddr *uaddr,
Index: net-2.6.25/net/ipv6/af_inet6.c
===================================================================
--- net-2.6.25.orig/net/ipv6/af_inet6.c
+++ net-2.6.25/net/ipv6/af_inet6.c
@@ -529,42 +529,6 @@ static struct net_proto_family inet6_fam
.owner = THIS_MODULE,
};
-/* Same as inet6_dgram_ops, sans udp_poll. */
-static const struct proto_ops inet6_sockraw_ops = {
- .family = PF_INET6,
- .owner = THIS_MODULE,
- .release = inet6_release,
- .bind = inet6_bind,
- .connect = inet_dgram_connect, /* ok */
- .socketpair = sock_no_socketpair, /* a do nothing */
- .accept = sock_no_accept, /* a do nothing */
- .getname = inet6_getname,
- .poll = datagram_poll, /* ok */
- .ioctl = inet6_ioctl, /* must change */
- .listen = sock_no_listen, /* ok */
- .shutdown = inet_shutdown, /* ok */
- .setsockopt = sock_common_setsockopt, /* ok */
- .getsockopt = sock_common_getsockopt, /* ok */
- .sendmsg = inet_sendmsg, /* ok */
- .recvmsg = sock_common_recvmsg, /* ok */
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
-#ifdef CONFIG_COMPAT
- .compat_setsockopt = compat_sock_common_setsockopt,
- .compat_getsockopt = compat_sock_common_getsockopt,
-#endif
-};
-
-static struct inet_protosw rawv6_protosw = {
- .type = SOCK_RAW,
- .protocol = IPPROTO_IP, /* wild card */
- .prot = &rawv6_prot,
- .ops = &inet6_sockraw_ops,
- .capability = CAP_NET_RAW,
- .no_check = UDP_CSUM_DEFAULT,
- .flags = INET_PROTOSW_REUSE,
-};
-
int inet6_register_protosw(struct inet_protosw *p)
{
struct list_head *lh;
@@ -771,7 +735,6 @@ static int __init inet6_init(void)
__this_module.can_unload = &ipv6_unload;
#endif
#endif
-
err = proto_register(&tcpv6_prot, 1);
if (err)
goto out;
@@ -796,14 +759,16 @@ static int __init inet6_init(void)
/* We MUST register RAW sockets before we create the ICMP6,
* IGMP6, or NDISC control sockets.
*/
- inet6_register_protosw(&rawv6_protosw);
+ err = rawv6_init();
+ if (err)
+ goto out_unregister_raw_proto;
/* Register the family here so that the init calls below will
* be able to create sockets. (?? is this dangerous ??)
*/
err = sock_register(&inet6_family_ops);
if (err)
- goto out_unregister_raw_proto;
+ goto out_sock_register_fail;
/* Initialise ipv6 mibs */
err = init_ipv6_mibs();
@@ -871,15 +836,32 @@ static int __init inet6_init(void)
goto ipv6_frag_fail;
/* Init v6 transport protocols. */
- udpv6_init();
- udplitev6_init();
- tcpv6_init();
+ err = udpv6_init();
+ if (err)
+ goto udpv6_fail;
+
+ err = udplitev6_init();
+ if (err)
+ goto udplitev6_fail;
+
+ err = tcpv6_init();
+ if (err)
+ goto tcpv6_fail;
- ipv6_packet_init();
- err = 0;
+ err = ipv6_packet_init();
+ if (err)
+ goto ipv6_packet_fail;
out:
return err;
+ipv6_packet_fail:
+ tcpv6_exit();
+tcpv6_fail:
+ udplitev6_exit();
+udplitev6_fail:
+ udpv6_exit();
+udpv6_fail:
+ ipv6_frag_exit();
ipv6_frag_fail:
ipv6_exthdrs_exit();
ipv6_exthdrs_fail:
@@ -920,6 +902,8 @@ icmp_fail:
out_unregister_sock:
sock_unregister(PF_INET6);
rtnl_unregister_all(PF_INET6);
+out_sock_register_fail:
+ rawv6_exit();
out_unregister_raw_proto:
proto_unregister(&rawv6_prot);
out_unregister_udplite_proto:
@@ -939,6 +923,10 @@ static void __exit inet6_exit(void)
/* Disallow any further netlink messages */
rtnl_unregister_all(PF_INET6);
+ udpv6_exit();
+ udplitev6_exit();
+ tcpv6_exit();
+
/* Cleanup code parts. */
ipv6_packet_cleanup();
ipv6_frag_exit();
@@ -961,6 +949,7 @@ static void __exit inet6_exit(void)
igmp6_cleanup();
ndisc_cleanup();
icmpv6_cleanup();
+ rawv6_exit();
#ifdef CONFIG_SYSCTL
ipv6_sysctl_unregister();
#endif
Index: net-2.6.25/net/ipv6/udp.c
===================================================================
--- net-2.6.25.orig/net/ipv6/udp.c
+++ net-2.6.25/net/ipv6/udp.c
@@ -1016,9 +1016,27 @@ static struct inet_protosw udpv6_protosw
};
-void __init udpv6_init(void)
+int __init udpv6_init(void)
{
- if (inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP) < 0)
- printk(KERN_ERR "udpv6_init: Could not register protocol\n");
- inet6_register_protosw(&udpv6_protosw);
+ int ret;
+
+ ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);
+ if (ret)
+ goto out;
+
+ ret = inet6_register_protosw(&udpv6_protosw);
+ if (ret)
+ goto out_udpv6_protocol;
+out:
+ return ret;
+
+out_udpv6_protocol:
+ inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
+ goto out;
+}
+
+void __exit udpv6_exit(void)
+{
+ inet6_unregister_protosw(&udpv6_protosw);
+ inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);
}
Index: net-2.6.25/include/net/ipv6.h
===================================================================
--- net-2.6.25.orig/include/net/ipv6.h
+++ net-2.6.25/include/net/ipv6.h
@@ -545,7 +545,7 @@ extern int compat_ipv6_getsockopt(stru
char __user *optval,
int __user *optlen);
-extern void ipv6_packet_init(void);
+extern int ipv6_packet_init(void);
extern void ipv6_packet_cleanup(void);
Index: net-2.6.25/net/ipv6/ipv6_sockglue.c
===================================================================
--- net-2.6.25.orig/net/ipv6/ipv6_sockglue.c
+++ net-2.6.25/net/ipv6/ipv6_sockglue.c
@@ -1130,9 +1130,10 @@ int compat_ipv6_getsockopt(struct sock *
EXPORT_SYMBOL(compat_ipv6_getsockopt);
#endif
-void __init ipv6_packet_init(void)
+int __init ipv6_packet_init(void)
{
dev_add_pack(&ipv6_packet_type);
+ return 0;
}
void ipv6_packet_cleanup(void)
Index: net-2.6.25/net/ipv6/raw.c
===================================================================
--- net-2.6.25.orig/net/ipv6/raw.c
+++ net-2.6.25/net/ipv6/raw.c
@@ -1273,3 +1273,55 @@ void raw6_proc_exit(void)
proc_net_remove(&init_net, "raw6");
}
#endif /* CONFIG_PROC_FS */
+
+/* Same as inet6_dgram_ops, sans udp_poll. */
+static const struct proto_ops inet6_sockraw_ops = {
+ .family = PF_INET6,
+ .owner = THIS_MODULE,
+ .release = inet6_release,
+ .bind = inet6_bind,
+ .connect = inet_dgram_connect, /* ok */
+ .socketpair = sock_no_socketpair, /* a do nothing */
+ .accept = sock_no_accept, /* a do nothing */
+ .getname = inet6_getname,
+ .poll = datagram_poll, /* ok */
+ .ioctl = inet6_ioctl, /* must change */
+ .listen = sock_no_listen, /* ok */
+ .shutdown = inet_shutdown, /* ok */
+ .setsockopt = sock_common_setsockopt, /* ok */
+ .getsockopt = sock_common_getsockopt, /* ok */
+ .sendmsg = inet_sendmsg, /* ok */
+ .recvmsg = sock_common_recvmsg, /* ok */
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+#ifdef CONFIG_COMPAT
+ .compat_setsockopt = compat_sock_common_setsockopt,
+ .compat_getsockopt = compat_sock_common_getsockopt,
+#endif
+};
+
+static struct inet_protosw rawv6_protosw = {
+ .type = SOCK_RAW,
+ .protocol = IPPROTO_IP, /* wild card */
+ .prot = &rawv6_prot,
+ .ops = &inet6_sockraw_ops,
+ .capability = CAP_NET_RAW,
+ .no_check = UDP_CSUM_DEFAULT,
+ .flags = INET_PROTOSW_REUSE,
+};
+
+int __init rawv6_init(void)
+{
+ int ret;
+
+ ret = inet6_register_protosw(&rawv6_protosw);
+ if (ret)
+ goto out;
+out:
+ return ret;
+}
+
+void __exit rawv6_exit(void)
+{
+ inet6_unregister_protosw(&rawv6_protosw);
+}
Index: net-2.6.25/net/ipv6/tcp_ipv6.c
===================================================================
--- net-2.6.25.orig/net/ipv6/tcp_ipv6.c
+++ net-2.6.25/net/ipv6/tcp_ipv6.c
@@ -2167,14 +2167,36 @@ static struct inet_protosw tcpv6_protosw
INET_PROTOSW_ICSK,
};
-void __init tcpv6_init(void)
+int __init tcpv6_init(void)
{
+ int ret;
+
+ ret = inet6_add_protocol(&tcpv6_protocol, IPPROTO_TCP);
+ if (ret)
+ goto out;
+
/* register inet6 protocol */
- if (inet6_add_protocol(&tcpv6_protocol, IPPROTO_TCP) < 0)
- printk(KERN_ERR "tcpv6_init: Could not register protocol\n");
- inet6_register_protosw(&tcpv6_protosw);
-
- if (inet_csk_ctl_sock_create(&tcp6_socket, PF_INET6, SOCK_RAW,
- IPPROTO_TCP) < 0)
- panic("Failed to create the TCPv6 control socket.\n");
+ ret = inet6_register_protosw(&tcpv6_protosw);
+ if (ret)
+ goto out_tcpv6_protocol;
+
+ ret = inet_csk_ctl_sock_create(&tcp6_socket, PF_INET6,
+ SOCK_RAW, IPPROTO_TCP);
+ if (ret)
+ goto out_tcpv6_protosw;
+out:
+ return ret;
+
+out_tcpv6_protocol:
+ inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);
+out_tcpv6_protosw:
+ inet6_unregister_protosw(&tcpv6_protosw);
+ goto out;
+}
+
+void __exit tcpv6_exit(void)
+{
+ sock_release(tcp6_socket);
+ inet6_unregister_protosw(&tcpv6_protosw);
+ inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);
}
Index: net-2.6.25/net/ipv6/udplite.c
===================================================================
--- net-2.6.25.orig/net/ipv6/udplite.c
+++ net-2.6.25/net/ipv6/udplite.c
@@ -77,12 +77,29 @@ static struct inet_protosw udplite6_prot
.flags = INET_PROTOSW_PERMANENT,
};
-void __init udplitev6_init(void)
+int __init udplitev6_init(void)
{
- if (inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE) < 0)
- printk(KERN_ERR "%s: Could not register.\n", __FUNCTION__);
+ int ret;
- inet6_register_protosw(&udplite6_protosw);
+ ret = inet6_add_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
+ if (ret)
+ goto out;
+
+ ret = inet6_register_protosw(&udplite6_protosw);
+ if (ret)
+ goto out_udplitev6_protocol;
+out:
+ return ret;
+
+out_udplitev6_protocol:
+ inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
+ goto out;
+}
+
+void __exit udplitev6_exit(void)
+{
+ inet6_unregister_protosw(&udplite6_protosw);
+ inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);
}
#ifdef CONFIG_PROC_FS
--
^ permalink raw reply [flat|nested] 13+ messages in thread