* [PATCH 28/47] netfilter: exthdr: split netlink dump function
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
so eval and uncoming eval_set versions can reuse a common helper.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_exthdr.c | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/net/netfilter/nft_exthdr.c b/net/netfilter/nft_exthdr.c
index 921c95f2c583..e3a6eebe7e0c 100644
--- a/net/netfilter/nft_exthdr.c
+++ b/net/netfilter/nft_exthdr.c
@@ -180,12 +180,8 @@ static int nft_exthdr_init(const struct nft_ctx *ctx,
NFT_DATA_VALUE, priv->len);
}
-static int nft_exthdr_dump(struct sk_buff *skb, const struct nft_expr *expr)
+static int nft_exthdr_dump_common(struct sk_buff *skb, const struct nft_exthdr *priv)
{
- const struct nft_exthdr *priv = nft_expr_priv(expr);
-
- if (nft_dump_register(skb, NFTA_EXTHDR_DREG, priv->dreg))
- goto nla_put_failure;
if (nla_put_u8(skb, NFTA_EXTHDR_TYPE, priv->type))
goto nla_put_failure;
if (nla_put_be32(skb, NFTA_EXTHDR_OFFSET, htonl(priv->offset)))
@@ -202,6 +198,16 @@ static int nft_exthdr_dump(struct sk_buff *skb, const struct nft_expr *expr)
return -1;
}
+static int nft_exthdr_dump(struct sk_buff *skb, const struct nft_expr *expr)
+{
+ const struct nft_exthdr *priv = nft_expr_priv(expr);
+
+ if (nft_dump_register(skb, NFTA_EXTHDR_DREG, priv->dreg))
+ return -1;
+
+ return nft_exthdr_dump_common(skb, priv);
+}
+
static struct nft_expr_type nft_exthdr_type;
static const struct nft_expr_ops nft_exthdr_ipv6_ops = {
.type = &nft_exthdr_type,
--
2.1.4
^ permalink raw reply related
* [PATCH 24/47] netfilter: connlimit: merge root4 and root6.
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Taehee Yoo <ap420073@gmail.com>
The root4 variable is used only when connlimit extension module has been
stored by the iptables command. and the roo6 variable is used only when
connlimit extension module has been stored by the ip6tables command.
So the root4 and roo6 variable does not be used at the same time.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/xt_connlimit.c | 23 ++++++++---------------
1 file changed, 8 insertions(+), 15 deletions(-)
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index 97589b8a2a40..ffa8eec980e9 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -58,8 +58,7 @@ struct xt_connlimit_rb {
static spinlock_t xt_connlimit_locks[CONNLIMIT_LOCK_SLOTS] __cacheline_aligned_in_smp;
struct xt_connlimit_data {
- struct rb_root climit_root4[CONNLIMIT_SLOTS];
- struct rb_root climit_root6[CONNLIMIT_SLOTS];
+ struct rb_root climit_root[CONNLIMIT_SLOTS];
};
static u_int32_t connlimit_rnd __read_mostly;
@@ -294,13 +293,11 @@ static int count_them(struct net *net,
int count;
u32 hash;
- if (family == NFPROTO_IPV6) {
+ if (family == NFPROTO_IPV6)
hash = connlimit_iphash6(addr, mask);
- root = &data->climit_root6[hash];
- } else {
+ else
hash = connlimit_iphash(addr->ip & mask->ip);
- root = &data->climit_root4[hash];
- }
+ root = &data->climit_root[hash];
spin_lock_bh(&xt_connlimit_locks[hash % CONNLIMIT_LOCK_SLOTS]);
@@ -379,10 +376,8 @@ static int connlimit_mt_check(const struct xt_mtchk_param *par)
return -ENOMEM;
}
- for (i = 0; i < ARRAY_SIZE(info->data->climit_root4); ++i)
- info->data->climit_root4[i] = RB_ROOT;
- for (i = 0; i < ARRAY_SIZE(info->data->climit_root6); ++i)
- info->data->climit_root6[i] = RB_ROOT;
+ for (i = 0; i < ARRAY_SIZE(info->data->climit_root); ++i)
+ info->data->climit_root[i] = RB_ROOT;
return 0;
}
@@ -413,10 +408,8 @@ static void connlimit_mt_destroy(const struct xt_mtdtor_param *par)
nf_ct_netns_put(par->net, par->family);
- for (i = 0; i < ARRAY_SIZE(info->data->climit_root4); ++i)
- destroy_tree(&info->data->climit_root4[i]);
- for (i = 0; i < ARRAY_SIZE(info->data->climit_root6); ++i)
- destroy_tree(&info->data->climit_root6[i]);
+ for (i = 0; i < ARRAY_SIZE(info->data->climit_root); ++i)
+ destroy_tree(&info->data->climit_root[i]);
kfree(info->data);
}
--
2.1.4
^ permalink raw reply related
* [PATCH 25/47] netfilter: remove prototype of netfilter_queue_init
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Taehee Yoo <ap420073@gmail.com>
The netfilter_queue_init() has been removed.
so we can remove the prototype of that.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_internals.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
index bfa742da83af..19f00a47a710 100644
--- a/net/netfilter/nf_internals.h
+++ b/net/netfilter/nf_internals.h
@@ -15,7 +15,6 @@
int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
struct nf_hook_entry **entryp, unsigned int verdict);
unsigned int nf_queue_nf_hook_drop(struct net *net);
-int __init netfilter_queue_init(void);
/* nf_log.c */
int __init netfilter_log_init(void);
--
2.1.4
^ permalink raw reply related
* [PATCH 27/47] netfilter: exthdr: factor out tcp option access
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_exthdr.c | 33 +++++++++++++++++++++------------
1 file changed, 21 insertions(+), 12 deletions(-)
diff --git a/net/netfilter/nft_exthdr.c b/net/netfilter/nft_exthdr.c
index 1ec49fe5845f..921c95f2c583 100644
--- a/net/netfilter/nft_exthdr.c
+++ b/net/netfilter/nft_exthdr.c
@@ -61,6 +61,26 @@ static void nft_exthdr_ipv6_eval(const struct nft_expr *expr,
regs->verdict.code = NFT_BREAK;
}
+static void *
+nft_tcp_header_pointer(const struct nft_pktinfo *pkt,
+ unsigned int len, void *buffer, unsigned int *tcphdr_len)
+{
+ struct tcphdr *tcph;
+
+ if (!pkt->tprot_set || pkt->tprot != IPPROTO_TCP)
+ return NULL;
+
+ tcph = skb_header_pointer(pkt->skb, pkt->xt.thoff, sizeof(*tcph), buffer);
+ if (!tcph)
+ return NULL;
+
+ *tcphdr_len = __tcp_hdrlen(tcph);
+ if (*tcphdr_len < sizeof(*tcph) || *tcphdr_len > len)
+ return NULL;
+
+ return skb_header_pointer(pkt->skb, pkt->xt.thoff, *tcphdr_len, buffer);
+}
+
static void nft_exthdr_tcp_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
@@ -72,18 +92,7 @@ static void nft_exthdr_tcp_eval(const struct nft_expr *expr,
struct tcphdr *tcph;
u8 *opt;
- if (!pkt->tprot_set || pkt->tprot != IPPROTO_TCP)
- goto err;
-
- tcph = skb_header_pointer(pkt->skb, pkt->xt.thoff, sizeof(*tcph), buff);
- if (!tcph)
- goto err;
-
- tcphdr_len = __tcp_hdrlen(tcph);
- if (tcphdr_len < sizeof(*tcph))
- goto err;
-
- tcph = skb_header_pointer(pkt->skb, pkt->xt.thoff, tcphdr_len, buff);
+ tcph = nft_tcp_header_pointer(pkt, sizeof(buff), buff, &tcphdr_len);
if (!tcph)
goto err;
--
2.1.4
^ permalink raw reply related
* [PATCH 30/47] netfilter: rt: add support to fetch path mss
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
to be used in combination with tcp option set support to mimic
iptables TCPMSS --clamp-mss-to-pmtu.
v2: Eric Dumazet points out dst must be initialized.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/uapi/linux/netfilter/nf_tables.h | 2 +
net/netfilter/nft_rt.c | 66 ++++++++++++++++++++++++++++++++
2 files changed, 68 insertions(+)
diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index 40fd199f7531..b49da72efa68 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -811,11 +811,13 @@ enum nft_meta_keys {
* @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
* @NFT_RT_NEXTHOP4: routing nexthop for IPv4
* @NFT_RT_NEXTHOP6: routing nexthop for IPv6
+ * @NFT_RT_TCPMSS: fetch current path tcp mss
*/
enum nft_rt_keys {
NFT_RT_CLASSID,
NFT_RT_NEXTHOP4,
NFT_RT_NEXTHOP6,
+ NFT_RT_TCPMSS,
};
/**
diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c
index c7383d8f88d0..e142e65d3176 100644
--- a/net/netfilter/nft_rt.c
+++ b/net/netfilter/nft_rt.c
@@ -23,6 +23,42 @@ struct nft_rt {
enum nft_registers dreg:8;
};
+static u16 get_tcpmss(const struct nft_pktinfo *pkt, const struct dst_entry *skbdst)
+{
+ u32 minlen = sizeof(struct ipv6hdr), mtu = dst_mtu(skbdst);
+ const struct sk_buff *skb = pkt->skb;
+ const struct nf_afinfo *ai;
+ struct flowi fl;
+
+ memset(&fl, 0, sizeof(fl));
+
+ switch (nft_pf(pkt)) {
+ case NFPROTO_IPV4:
+ fl.u.ip4.daddr = ip_hdr(skb)->saddr;
+ minlen = sizeof(struct iphdr);
+ break;
+ case NFPROTO_IPV6:
+ fl.u.ip6.daddr = ipv6_hdr(skb)->saddr;
+ break;
+ }
+
+ ai = nf_get_afinfo(nft_pf(pkt));
+ if (ai) {
+ struct dst_entry *dst = NULL;
+
+ ai->route(nft_net(pkt), &dst, &fl, false);
+ if (dst) {
+ mtu = min(mtu, dst_mtu(dst));
+ dst_release(dst);
+ }
+ }
+
+ if (mtu <= minlen || mtu > 0xffff)
+ return TCP_MSS_DEFAULT;
+
+ return mtu - minlen;
+}
+
static void nft_rt_get_eval(const struct nft_expr *expr,
struct nft_regs *regs,
const struct nft_pktinfo *pkt)
@@ -57,6 +93,9 @@ static void nft_rt_get_eval(const struct nft_expr *expr,
&ipv6_hdr(skb)->daddr),
sizeof(struct in6_addr));
break;
+ case NFT_RT_TCPMSS:
+ nft_reg_store16(dest, get_tcpmss(pkt, dst));
+ break;
default:
WARN_ON(1);
goto err;
@@ -94,6 +133,9 @@ static int nft_rt_get_init(const struct nft_ctx *ctx,
case NFT_RT_NEXTHOP6:
len = sizeof(struct in6_addr);
break;
+ case NFT_RT_TCPMSS:
+ len = sizeof(u16);
+ break;
default:
return -EOPNOTSUPP;
}
@@ -118,6 +160,29 @@ static int nft_rt_get_dump(struct sk_buff *skb,
return -1;
}
+static int nft_rt_validate(const struct nft_ctx *ctx, const struct nft_expr *expr,
+ const struct nft_data **data)
+{
+ const struct nft_rt *priv = nft_expr_priv(expr);
+ unsigned int hooks;
+
+ switch (priv->key) {
+ case NFT_RT_NEXTHOP4:
+ case NFT_RT_NEXTHOP6:
+ case NFT_RT_CLASSID:
+ return 0;
+ case NFT_RT_TCPMSS:
+ hooks = (1 << NF_INET_FORWARD) |
+ (1 << NF_INET_LOCAL_OUT) |
+ (1 << NF_INET_POST_ROUTING);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return nft_chain_validate_hooks(ctx->chain, hooks);
+}
+
static struct nft_expr_type nft_rt_type;
static const struct nft_expr_ops nft_rt_get_ops = {
.type = &nft_rt_type,
@@ -125,6 +190,7 @@ static const struct nft_expr_ops nft_rt_get_ops = {
.eval = nft_rt_get_eval,
.init = nft_rt_get_init,
.dump = nft_rt_get_dump,
+ .validate = nft_rt_validate,
};
static struct nft_expr_type nft_rt_type __read_mostly = {
--
2.1.4
^ permalink raw reply related
* [PATCH 29/47] netfilter: exthdr: tcp option set support
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
This allows setting 2 and 4 byte quantities in the tcp option space.
Main purpose is to allow native replacement for xt_TCPMSS to
work around pmtu blackholes.
Writes to kind and len are now allowed at the moment, it does not seem
useful to do this as it causes corruption of the tcp option space.
We can always lift this restriction later if a use-case appears.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/uapi/linux/netfilter/nf_tables.h | 4 +-
net/netfilter/nft_exthdr.c | 164 ++++++++++++++++++++++++++++++-
2 files changed, 165 insertions(+), 3 deletions(-)
diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index be25cf69295b..40fd199f7531 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -732,7 +732,8 @@ enum nft_exthdr_op {
* @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32)
* @NFTA_EXTHDR_LEN: extension header length (NLA_U32)
* @NFTA_EXTHDR_FLAGS: extension header flags (NLA_U32)
- * @NFTA_EXTHDR_OP: option match type (NLA_U8)
+ * @NFTA_EXTHDR_OP: option match type (NLA_U32)
+ * @NFTA_EXTHDR_SREG: option match type (NLA_U32)
*/
enum nft_exthdr_attributes {
NFTA_EXTHDR_UNSPEC,
@@ -742,6 +743,7 @@ enum nft_exthdr_attributes {
NFTA_EXTHDR_LEN,
NFTA_EXTHDR_FLAGS,
NFTA_EXTHDR_OP,
+ NFTA_EXTHDR_SREG,
__NFTA_EXTHDR_MAX
};
#define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1)
diff --git a/net/netfilter/nft_exthdr.c b/net/netfilter/nft_exthdr.c
index e3a6eebe7e0c..f5a0bf5e3bdd 100644
--- a/net/netfilter/nft_exthdr.c
+++ b/net/netfilter/nft_exthdr.c
@@ -8,6 +8,7 @@
* Development of this code funded by Astaro AG (http://www.astaro.com/)
*/
+#include <asm/unaligned.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -23,6 +24,7 @@ struct nft_exthdr {
u8 len;
u8 op;
enum nft_registers dreg:8;
+ enum nft_registers sreg:8;
u8 flags;
};
@@ -124,6 +126,88 @@ static void nft_exthdr_tcp_eval(const struct nft_expr *expr,
regs->verdict.code = NFT_BREAK;
}
+static void nft_exthdr_tcp_set_eval(const struct nft_expr *expr,
+ struct nft_regs *regs,
+ const struct nft_pktinfo *pkt)
+{
+ u8 buff[sizeof(struct tcphdr) + MAX_TCP_OPTION_SPACE];
+ struct nft_exthdr *priv = nft_expr_priv(expr);
+ unsigned int i, optl, tcphdr_len, offset;
+ struct tcphdr *tcph;
+ u8 *opt;
+ u32 src;
+
+ tcph = nft_tcp_header_pointer(pkt, sizeof(buff), buff, &tcphdr_len);
+ if (!tcph)
+ return;
+
+ opt = (u8 *)tcph;
+ for (i = sizeof(*tcph); i < tcphdr_len - 1; i += optl) {
+ union {
+ u8 octet;
+ __be16 v16;
+ __be32 v32;
+ } old, new;
+
+ optl = optlen(opt, i);
+
+ if (priv->type != opt[i])
+ continue;
+
+ if (i + optl > tcphdr_len || priv->len + priv->offset > optl)
+ return;
+
+ if (!skb_make_writable(pkt->skb, pkt->xt.thoff + i + priv->len))
+ return;
+
+ tcph = nft_tcp_header_pointer(pkt, sizeof(buff), buff,
+ &tcphdr_len);
+ if (!tcph)
+ return;
+
+ src = regs->data[priv->sreg];
+ offset = i + priv->offset;
+
+ switch (priv->len) {
+ case 2:
+ old.v16 = get_unaligned((u16 *)(opt + offset));
+ new.v16 = src;
+
+ switch (priv->type) {
+ case TCPOPT_MSS:
+ /* increase can cause connection to stall */
+ if (ntohs(old.v16) <= ntohs(new.v16))
+ return;
+ break;
+ }
+
+ if (old.v16 == new.v16)
+ return;
+
+ put_unaligned(new.v16, (u16*)(opt + offset));
+ inet_proto_csum_replace2(&tcph->check, pkt->skb,
+ old.v16, new.v16, false);
+ break;
+ case 4:
+ new.v32 = src;
+ old.v32 = get_unaligned((u32 *)(opt + offset));
+
+ if (old.v32 == new.v32)
+ return;
+
+ put_unaligned(new.v32, (u32*)(opt + offset));
+ inet_proto_csum_replace4(&tcph->check, pkt->skb,
+ old.v32, new.v32, false);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ break;
+ }
+
+ return;
+ }
+}
+
static const struct nla_policy nft_exthdr_policy[NFTA_EXTHDR_MAX + 1] = {
[NFTA_EXTHDR_DREG] = { .type = NLA_U32 },
[NFTA_EXTHDR_TYPE] = { .type = NLA_U8 },
@@ -180,6 +264,55 @@ static int nft_exthdr_init(const struct nft_ctx *ctx,
NFT_DATA_VALUE, priv->len);
}
+static int nft_exthdr_tcp_set_init(const struct nft_ctx *ctx,
+ const struct nft_expr *expr,
+ const struct nlattr * const tb[])
+{
+ struct nft_exthdr *priv = nft_expr_priv(expr);
+ u32 offset, len, flags = 0, op = NFT_EXTHDR_OP_IPV6;
+ int err;
+
+ if (!tb[NFTA_EXTHDR_SREG] ||
+ !tb[NFTA_EXTHDR_TYPE] ||
+ !tb[NFTA_EXTHDR_OFFSET] ||
+ !tb[NFTA_EXTHDR_LEN])
+ return -EINVAL;
+
+ if (tb[NFTA_EXTHDR_DREG] || tb[NFTA_EXTHDR_FLAGS])
+ return -EINVAL;
+
+ err = nft_parse_u32_check(tb[NFTA_EXTHDR_OFFSET], U8_MAX, &offset);
+ if (err < 0)
+ return err;
+
+ err = nft_parse_u32_check(tb[NFTA_EXTHDR_LEN], U8_MAX, &len);
+ if (err < 0)
+ return err;
+
+ if (offset < 2)
+ return -EOPNOTSUPP;
+
+ switch (len) {
+ case 2: break;
+ case 4: break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ err = nft_parse_u32_check(tb[NFTA_EXTHDR_OP], U8_MAX, &op);
+ if (err < 0)
+ return err;
+
+ priv->type = nla_get_u8(tb[NFTA_EXTHDR_TYPE]);
+ priv->offset = offset;
+ priv->len = len;
+ priv->sreg = nft_parse_register(tb[NFTA_EXTHDR_SREG]);
+ priv->flags = flags;
+ priv->op = op;
+
+ return nft_validate_register_load(priv->sreg, priv->len);
+}
+
static int nft_exthdr_dump_common(struct sk_buff *skb, const struct nft_exthdr *priv)
{
if (nla_put_u8(skb, NFTA_EXTHDR_TYPE, priv->type))
@@ -208,6 +341,16 @@ static int nft_exthdr_dump(struct sk_buff *skb, const struct nft_expr *expr)
return nft_exthdr_dump_common(skb, priv);
}
+static int nft_exthdr_dump_set(struct sk_buff *skb, const struct nft_expr *expr)
+{
+ const struct nft_exthdr *priv = nft_expr_priv(expr);
+
+ if (nft_dump_register(skb, NFTA_EXTHDR_SREG, priv->sreg))
+ return -1;
+
+ return nft_exthdr_dump_common(skb, priv);
+}
+
static struct nft_expr_type nft_exthdr_type;
static const struct nft_expr_ops nft_exthdr_ipv6_ops = {
.type = &nft_exthdr_type,
@@ -225,6 +368,14 @@ static const struct nft_expr_ops nft_exthdr_tcp_ops = {
.dump = nft_exthdr_dump,
};
+static const struct nft_expr_ops nft_exthdr_tcp_set_ops = {
+ .type = &nft_exthdr_type,
+ .size = NFT_EXPR_SIZE(sizeof(struct nft_exthdr)),
+ .eval = nft_exthdr_tcp_set_eval,
+ .init = nft_exthdr_tcp_set_init,
+ .dump = nft_exthdr_dump_set,
+};
+
static const struct nft_expr_ops *
nft_exthdr_select_ops(const struct nft_ctx *ctx,
const struct nlattr * const tb[])
@@ -234,12 +385,21 @@ nft_exthdr_select_ops(const struct nft_ctx *ctx,
if (!tb[NFTA_EXTHDR_OP])
return &nft_exthdr_ipv6_ops;
+ if (tb[NFTA_EXTHDR_SREG] && tb[NFTA_EXTHDR_DREG])
+ return ERR_PTR(-EOPNOTSUPP);
+
op = ntohl(nla_get_u32(tb[NFTA_EXTHDR_OP]));
switch (op) {
case NFT_EXTHDR_OP_TCPOPT:
- return &nft_exthdr_tcp_ops;
+ if (tb[NFTA_EXTHDR_SREG])
+ return &nft_exthdr_tcp_set_ops;
+ if (tb[NFTA_EXTHDR_DREG])
+ return &nft_exthdr_tcp_ops;
+ break;
case NFT_EXTHDR_OP_IPV6:
- return &nft_exthdr_ipv6_ops;
+ if (tb[NFTA_EXTHDR_DREG])
+ return &nft_exthdr_ipv6_ops;
+ break;
}
return ERR_PTR(-EOPNOTSUPP);
--
2.1.4
^ permalink raw reply related
* [PATCH 31/47] netfilter: nf_nat_h323: fix logical-not-parentheses warning
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Nick Desaulniers <ndesaulniers@google.com>
Clang produces the following warning:
net/ipv4/netfilter/nf_nat_h323.c:553:6: error:
logical not is only applied to the left hand side of this comparison
[-Werror,-Wlogical-not-parentheses]
if (!set_h225_addr(skb, protoff, data, dataoff, taddr,
^
add parentheses after the '!' to evaluate the comparison first
add parentheses around left hand side expression to silence this warning
There's not necessarily a bug here, but it's cleaner to return early,
ex:
if (x)
return
...
rather than:
if (x == 0)
...
else
return
Also added a return code check that seemed to be missing in one
instance.
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/ipv4/netfilter/nf_nat_h323.c | 57 +++++++++++++++++++++-------------------
1 file changed, 30 insertions(+), 27 deletions(-)
diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c
index 574f7ebba0b6..ac8342dcb55e 100644
--- a/net/ipv4/netfilter/nf_nat_h323.c
+++ b/net/ipv4/netfilter/nf_nat_h323.c
@@ -252,16 +252,16 @@ static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
if (set_h245_addr(skb, protoff, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
htons((port & htons(1)) ? nated_port + 1 :
- nated_port)) == 0) {
- /* Save ports */
- info->rtp_port[i][dir] = rtp_port;
- info->rtp_port[i][!dir] = htons(nated_port);
- } else {
+ nated_port))) {
nf_ct_unexpect_related(rtp_exp);
nf_ct_unexpect_related(rtcp_exp);
return -1;
}
+ /* Save ports */
+ info->rtp_port[i][dir] = rtp_port;
+ info->rtp_port[i][!dir] = htons(nated_port);
+
/* Success */
pr_debug("nf_nat_h323: expect RTP %pI4:%hu->%pI4:%hu\n",
&rtp_exp->tuple.src.u3.ip,
@@ -370,15 +370,15 @@ static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
/* Modify signal */
if (set_h225_addr(skb, protoff, data, dataoff, taddr,
&ct->tuplehash[!dir].tuple.dst.u3,
- htons(nated_port)) == 0) {
- /* Save ports */
- info->sig_port[dir] = port;
- info->sig_port[!dir] = htons(nated_port);
- } else {
+ htons(nated_port))) {
nf_ct_unexpect_related(exp);
return -1;
}
+ /* Save ports */
+ info->sig_port[dir] = port;
+ info->sig_port[!dir] = htons(nated_port);
+
pr_debug("nf_nat_q931: expect H.245 %pI4:%hu->%pI4:%hu\n",
&exp->tuple.src.u3.ip,
ntohs(exp->tuple.src.u.tcp.port),
@@ -462,24 +462,27 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
/* Modify signal */
if (set_h225_addr(skb, protoff, data, 0, &taddr[idx],
&ct->tuplehash[!dir].tuple.dst.u3,
- htons(nated_port)) == 0) {
- /* Save ports */
- info->sig_port[dir] = port;
- info->sig_port[!dir] = htons(nated_port);
-
- /* Fix for Gnomemeeting */
- if (idx > 0 &&
- get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
- (ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
- set_h225_addr(skb, protoff, data, 0, &taddr[0],
- &ct->tuplehash[!dir].tuple.dst.u3,
- info->sig_port[!dir]);
- }
- } else {
+ htons(nated_port))) {
nf_ct_unexpect_related(exp);
return -1;
}
+ /* Save ports */
+ info->sig_port[dir] = port;
+ info->sig_port[!dir] = htons(nated_port);
+
+ /* Fix for Gnomemeeting */
+ if (idx > 0 &&
+ get_h225_addr(ct, *data, &taddr[0], &addr, &port) &&
+ (ntohl(addr.ip) & 0xff000000) == 0x7f000000) {
+ if (set_h225_addr(skb, protoff, data, 0, &taddr[0],
+ &ct->tuplehash[!dir].tuple.dst.u3,
+ info->sig_port[!dir])) {
+ nf_ct_unexpect_related(exp);
+ return -1;
+ }
+ }
+
/* Success */
pr_debug("nf_nat_ras: expect Q.931 %pI4:%hu->%pI4:%hu\n",
&exp->tuple.src.u3.ip,
@@ -550,9 +553,9 @@ static int nat_callforwarding(struct sk_buff *skb, struct nf_conn *ct,
}
/* Modify signal */
- if (!set_h225_addr(skb, protoff, data, dataoff, taddr,
- &ct->tuplehash[!dir].tuple.dst.u3,
- htons(nated_port)) == 0) {
+ if (set_h225_addr(skb, protoff, data, dataoff, taddr,
+ &ct->tuplehash[!dir].tuple.dst.u3,
+ htons(nated_port))) {
nf_ct_unexpect_related(exp);
return -1;
}
--
2.1.4
^ permalink raw reply related
* [PATCH 32/47] netfilter: conntrack: compute l3proto nla size at compile time
From: Pablo Neira Ayuso @ 2017-09-03 22:40 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478435-13160-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
avoids a pointer and allows struct to be const later on.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l3proto.h | 19 ++++++++-----------
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 13 +++++++------
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 14 ++++++++------
net/netfilter/nf_conntrack_netlink.c | 3 ++-
net/netfilter/nf_conntrack_proto.c | 9 +++------
5 files changed, 28 insertions(+), 30 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index 1b8de164d744..6a27ffea7480 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -20,6 +20,9 @@ struct nf_conntrack_l3proto {
/* L3 Protocol Family number. ex) PF_INET */
u_int16_t l3proto;
+ /* size of tuple nlattr, fills a hole */
+ u16 nla_size;
+
/* Protocol name */
const char *name;
@@ -49,23 +52,17 @@ struct nf_conntrack_l3proto {
int (*get_l4proto)(const struct sk_buff *skb, unsigned int nhoff,
unsigned int *dataoff, u_int8_t *protonum);
+#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
int (*tuple_to_nlattr)(struct sk_buff *skb,
const struct nf_conntrack_tuple *t);
-
- /* Called when netns wants to use connection tracking */
- int (*net_ns_get)(struct net *);
- void (*net_ns_put)(struct net *);
-
- /*
- * Calculate size of tuple nlattr
- */
- int (*nlattr_tuple_size)(void);
-
int (*nlattr_to_tuple)(struct nlattr *tb[],
struct nf_conntrack_tuple *t);
const struct nla_policy *nla_policy;
+#endif
- size_t nla_size;
+ /* Called when netns wants to use connection tracking */
+ int (*net_ns_get)(struct net *);
+ void (*net_ns_put)(struct net *);
/* Module (if any) which this is connected to. */
struct module *me;
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index de5f0e6ddd1b..9fb8cb033d80 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -303,11 +303,6 @@ static int ipv4_nlattr_to_tuple(struct nlattr *tb[],
return 0;
}
-
-static int ipv4_nlattr_tuple_size(void)
-{
- return nla_policy_len(ipv4_nla_policy, CTA_IP_MAX + 1);
-}
#endif
static struct nf_sockopt_ops so_getorigdst = {
@@ -365,9 +360,10 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
.get_l4proto = ipv4_get_l4proto,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.tuple_to_nlattr = ipv4_tuple_to_nlattr,
- .nlattr_tuple_size = ipv4_nlattr_tuple_size,
.nlattr_to_tuple = ipv4_nlattr_to_tuple,
.nla_policy = ipv4_nla_policy,
+ .nla_size = NLA_ALIGN(NLA_HDRLEN + sizeof(u32)) + /* CTA_IP_V4_SRC */
+ NLA_ALIGN(NLA_HDRLEN + sizeof(u32)), /* CTA_IP_V4_DST */
#endif
.net_ns_get = ipv4_hooks_register,
.net_ns_put = ipv4_hooks_unregister,
@@ -421,6 +417,11 @@ static int __init nf_conntrack_l3proto_ipv4_init(void)
need_conntrack();
+#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
+ if (WARN_ON(nla_policy_len(ipv4_nla_policy, CTA_IP_MAX + 1) !=
+ nf_conntrack_l3proto_ipv4.nla_size))
+ return -EINVAL;
+#endif
ret = nf_register_sockopt(&so_getorigdst);
if (ret < 0) {
pr_err("Unable to register netfilter socket option\n");
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index ddef5ee9e0a8..6b4d59fd0214 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -308,11 +308,6 @@ static int ipv6_nlattr_to_tuple(struct nlattr *tb[],
return 0;
}
-
-static int ipv6_nlattr_tuple_size(void)
-{
- return nla_policy_len(ipv6_nla_policy, CTA_IP_MAX + 1);
-}
#endif
static int ipv6_hooks_register(struct net *net)
@@ -360,9 +355,10 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = {
.get_l4proto = ipv6_get_l4proto,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.tuple_to_nlattr = ipv6_tuple_to_nlattr,
- .nlattr_tuple_size = ipv6_nlattr_tuple_size,
.nlattr_to_tuple = ipv6_nlattr_to_tuple,
.nla_policy = ipv6_nla_policy,
+ .nla_size = NLA_ALIGN(NLA_HDRLEN + sizeof(u32[4])) +
+ NLA_ALIGN(NLA_HDRLEN + sizeof(u32[4])),
#endif
.net_ns_get = ipv6_hooks_register,
.net_ns_put = ipv6_hooks_unregister,
@@ -421,6 +417,12 @@ static int __init nf_conntrack_l3proto_ipv6_init(void)
need_conntrack();
+#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
+ if (WARN_ON(nla_policy_len(ipv6_nla_policy, CTA_IP_MAX + 1) !=
+ nf_conntrack_l3proto_ipv6.nla_size))
+ return -EINVAL;
+#endif
+
ret = nf_register_sockopt(&so_getorigdst6);
if (ret < 0) {
pr_err("Unable to register netfilter socket option\n");
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index f4ca48817f66..b59a453a0fd8 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -540,7 +540,8 @@ static inline size_t ctnetlink_proto_size(const struct nf_conn *ct)
size_t len = 0;
l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
- len += l3proto->nla_size;
+ len = l3proto->nla_size;
+ len *= 3u; /* ORIG, REPLY, MASTER */
l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
len += l4proto->nla_size;
diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
index 27810cf816a6..85104a27cc89 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -214,10 +214,10 @@ int nf_ct_l3proto_register(struct nf_conntrack_l3proto *proto)
if (proto->l3proto >= NFPROTO_NUMPROTO)
return -EBUSY;
-
- if (proto->tuple_to_nlattr && !proto->nlattr_tuple_size)
+#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
+ if (proto->tuple_to_nlattr && proto->nla_size == 0)
return -EINVAL;
-
+#endif
mutex_lock(&nf_ct_proto_mutex);
old = rcu_dereference_protected(nf_ct_l3protos[proto->l3proto],
lockdep_is_held(&nf_ct_proto_mutex));
@@ -226,9 +226,6 @@ int nf_ct_l3proto_register(struct nf_conntrack_l3proto *proto)
goto out_unlock;
}
- if (proto->nlattr_tuple_size)
- proto->nla_size = 3 * proto->nlattr_tuple_size();
-
rcu_assign_pointer(nf_ct_l3protos[proto->l3proto], proto);
out_unlock:
--
2.1.4
^ permalink raw reply related
* [PATCH 33/47] netfilter: conntrack: remove protocol name from l3proto struct
From: Pablo Neira Ayuso @ 2017-09-03 22:41 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
From: Florian Westphal <fw@strlen.de>
no need to waste storage for something that is only needed
in one place and can be deduced from protocol number.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l3proto.h | 3 ---
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 1 -
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 1 -
net/netfilter/nf_conntrack_l3proto_generic.c | 1 -
net/netfilter/nf_conntrack_standalone.c | 12 +++++++++++-
5 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index 6a27ffea7480..e31861e4fa6a 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -23,9 +23,6 @@ struct nf_conntrack_l3proto {
/* size of tuple nlattr, fills a hole */
u16 nla_size;
- /* Protocol name */
- const char *name;
-
/*
* Try to fill in the third arg: nhoff is offset of l3 proto
* hdr. Return true if possible.
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index 9fb8cb033d80..9f7ea862068c 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -353,7 +353,6 @@ static void ipv4_hooks_unregister(struct net *net)
struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
.l3proto = PF_INET,
- .name = "ipv4",
.pkt_to_tuple = ipv4_pkt_to_tuple,
.invert_tuple = ipv4_invert_tuple,
.print_tuple = ipv4_print_tuple,
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 6b4d59fd0214..91d37fbe28de 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -348,7 +348,6 @@ static void ipv6_hooks_unregister(struct net *net)
struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = {
.l3proto = PF_INET6,
- .name = "ipv6",
.pkt_to_tuple = ipv6_pkt_to_tuple,
.invert_tuple = ipv6_invert_tuple,
.print_tuple = ipv6_print_tuple,
diff --git a/net/netfilter/nf_conntrack_l3proto_generic.c b/net/netfilter/nf_conntrack_l3proto_generic.c
index cf9ace70bece..0387971582bc 100644
--- a/net/netfilter/nf_conntrack_l3proto_generic.c
+++ b/net/netfilter/nf_conntrack_l3proto_generic.c
@@ -64,7 +64,6 @@ static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
struct nf_conntrack_l3proto nf_conntrack_l3proto_generic __read_mostly = {
.l3proto = PF_UNSPEC,
- .name = "unknown",
.pkt_to_tuple = generic_pkt_to_tuple,
.invert_tuple = generic_invert_tuple,
.print_tuple = generic_print_tuple,
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 5b6c675d55b1..359d7e6a4503 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -198,6 +198,16 @@ ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
}
#endif
+static const char* l3proto_name(u16 proto)
+{
+ switch (proto) {
+ case AF_INET: return "ipv4";
+ case AF_INET6: return "ipv6";
+ }
+
+ return "unknown";
+}
+
/* return 0 on success, 1 in case of error */
static int ct_seq_show(struct seq_file *s, void *v)
{
@@ -231,7 +241,7 @@ static int ct_seq_show(struct seq_file *s, void *v)
ret = -ENOSPC;
seq_printf(s, "%-8s %u %-8s %u %ld ",
- l3proto->name, nf_ct_l3num(ct),
+ l3proto_name(l3proto->l3proto), nf_ct_l3num(ct),
l4proto->name, nf_ct_protonum(ct),
nf_ct_expires(ct) / HZ);
--
2.1.4
^ permalink raw reply related
* [PATCH 34/47] netfilter: conntrack: remove protocol name from l4proto struct
From: Pablo Neira Ayuso @ 2017-09-03 22:41 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478516-13224-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
no need to waste storage for something that is only needed
in one place and can be deduced from protocol number.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l4proto.h | 3 ---
net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 1 -
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 1 -
net/netfilter/nf_conntrack_proto.c | 8 ++++----
net/netfilter/nf_conntrack_proto_dccp.c | 2 --
net/netfilter/nf_conntrack_proto_generic.c | 1 -
net/netfilter/nf_conntrack_proto_gre.c | 1 -
net/netfilter/nf_conntrack_proto_sctp.c | 2 --
net/netfilter/nf_conntrack_proto_tcp.c | 2 --
net/netfilter/nf_conntrack_proto_udp.c | 4 ----
net/netfilter/nf_conntrack_standalone.c | 17 ++++++++++++++++-
11 files changed, 20 insertions(+), 22 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index b6e27cafb1d9..47c16bae5e00 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -108,9 +108,6 @@ struct nf_conntrack_l4proto {
/* Return the per-net protocol part. */
struct nf_proto_net *(*get_net_proto)(struct net *net);
- /* Protocol name */
- const char *name;
-
/* Module (if any) which this is connected to. */
struct module *me;
};
diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
index 73c591d8a9a8..fdbeb03e4600 100644
--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -362,7 +362,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp __read_mostly =
{
.l3proto = PF_INET,
.l4proto = IPPROTO_ICMP,
- .name = "icmp",
.pkt_to_tuple = icmp_pkt_to_tuple,
.invert_tuple = icmp_invert_tuple,
.print_tuple = icmp_print_tuple,
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index d5f028e33f65..805ab122767a 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -367,7 +367,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
{
.l3proto = PF_INET6,
.l4proto = IPPROTO_ICMPV6,
- .name = "icmpv6",
.pkt_to_tuple = icmpv6_pkt_to_tuple,
.invert_tuple = icmpv6_invert_tuple,
.print_tuple = icmpv6_print_tuple,
diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
index 85104a27cc89..0ecab7163d62 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -437,8 +437,8 @@ int nf_ct_l4proto_register(struct nf_conntrack_l4proto *l4proto[],
}
if (i != num_proto) {
ver = l4proto[i]->l3proto == PF_INET6 ? 6 : 4;
- pr_err("nf_conntrack_ipv%d: can't register %s%d proto.\n",
- ver, l4proto[i]->name, ver);
+ pr_err("nf_conntrack_ipv%d: can't register l4 %d proto.\n",
+ ver, l4proto[i]->l4proto);
nf_ct_l4proto_unregister(l4proto, i);
}
return ret;
@@ -458,8 +458,8 @@ int nf_ct_l4proto_pernet_register(struct net *net,
break;
}
if (i != num_proto) {
- pr_err("nf_conntrack_%s%d: pernet registration failed\n",
- l4proto[i]->name,
+ pr_err("nf_conntrack_proto_%d %d: pernet registration failed\n",
+ l4proto[i]->l4proto,
l4proto[i]->l3proto == PF_INET6 ? 6 : 4);
nf_ct_l4proto_pernet_unregister(net, l4proto, i);
}
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index 4707d997558a..a0492184a0a8 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -880,7 +880,6 @@ static struct nf_proto_net *dccp_get_net_proto(struct net *net)
struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp4 __read_mostly = {
.l3proto = AF_INET,
.l4proto = IPPROTO_DCCP,
- .name = "dccp",
.pkt_to_tuple = dccp_pkt_to_tuple,
.invert_tuple = dccp_invert_tuple,
.new = dccp_new,
@@ -916,7 +915,6 @@ EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_dccp4);
struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp6 __read_mostly = {
.l3proto = AF_INET6,
.l4proto = IPPROTO_DCCP,
- .name = "dccp",
.pkt_to_tuple = dccp_pkt_to_tuple,
.invert_tuple = dccp_invert_tuple,
.new = dccp_new,
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index d5868bad33a7..4fe8b3312823 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -187,7 +187,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly =
{
.l3proto = PF_UNSPEC,
.l4proto = 255,
- .name = "unknown",
.pkt_to_tuple = generic_pkt_to_tuple,
.invert_tuple = generic_invert_tuple,
.print_tuple = generic_print_tuple,
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 87bb40a3feb5..984bcfdbd4d7 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -364,7 +364,6 @@ static int gre_init_net(struct net *net, u_int16_t proto)
static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = {
.l3proto = AF_INET,
.l4proto = IPPROTO_GRE,
- .name = "gre",
.pkt_to_tuple = gre_pkt_to_tuple,
.invert_tuple = gre_invert_tuple,
.print_tuple = gre_print_tuple,
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index 6eef29d2eec4..1d7a995ea049 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -791,7 +791,6 @@ static struct nf_proto_net *sctp_get_net_proto(struct net *net)
struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
.l3proto = PF_INET,
.l4proto = IPPROTO_SCTP,
- .name = "sctp",
.pkt_to_tuple = sctp_pkt_to_tuple,
.invert_tuple = sctp_invert_tuple,
.print_tuple = sctp_print_tuple,
@@ -828,7 +827,6 @@ EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_sctp4);
struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
.l3proto = PF_INET6,
.l4proto = IPPROTO_SCTP,
- .name = "sctp",
.pkt_to_tuple = sctp_pkt_to_tuple,
.invert_tuple = sctp_invert_tuple,
.print_tuple = sctp_print_tuple,
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index 9758a7dfd83e..e3e59e3d0592 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -1556,7 +1556,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly =
{
.l3proto = PF_INET,
.l4proto = IPPROTO_TCP,
- .name = "tcp",
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
.print_tuple = tcp_print_tuple,
@@ -1594,7 +1593,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 __read_mostly =
{
.l3proto = PF_INET6,
.l4proto = IPPROTO_TCP,
- .name = "tcp",
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
.print_tuple = tcp_print_tuple,
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index f6ebce6178ca..ec861a1169f1 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -313,7 +313,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly =
{
.l3proto = PF_INET,
.l4proto = IPPROTO_UDP,
- .name = "udp",
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
@@ -347,7 +346,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite4 __read_mostly =
{
.l3proto = PF_INET,
.l4proto = IPPROTO_UDPLITE,
- .name = "udplite",
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
@@ -381,7 +379,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly =
{
.l3proto = PF_INET6,
.l4proto = IPPROTO_UDP,
- .name = "udp",
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
@@ -415,7 +412,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite6 __read_mostly =
{
.l3proto = PF_INET6,
.l4proto = IPPROTO_UDPLITE,
- .name = "udplite",
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 359d7e6a4503..b28f9e93f574 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -208,6 +208,21 @@ static const char* l3proto_name(u16 proto)
return "unknown";
}
+static const char* l4proto_name(u16 proto)
+{
+ switch (proto) {
+ case IPPROTO_ICMP: return "icmp";
+ case IPPROTO_TCP: return "tcp";
+ case IPPROTO_UDP: return "udp";
+ case IPPROTO_DCCP: return "dccp";
+ case IPPROTO_GRE: return "gre";
+ case IPPROTO_SCTP: return "sctp";
+ case IPPROTO_UDPLITE: return "udplite";
+ }
+
+ return "unknown";
+}
+
/* return 0 on success, 1 in case of error */
static int ct_seq_show(struct seq_file *s, void *v)
{
@@ -242,7 +257,7 @@ static int ct_seq_show(struct seq_file *s, void *v)
ret = -ENOSPC;
seq_printf(s, "%-8s %u %-8s %u %ld ",
l3proto_name(l3proto->l3proto), nf_ct_l3num(ct),
- l4proto->name, nf_ct_protonum(ct),
+ l4proto_name(l4proto->l4proto), nf_ct_protonum(ct),
nf_ct_expires(ct) / HZ);
if (l4proto->print_conntrack)
--
2.1.4
^ permalink raw reply related
* [PATCH 35/47] netfilter: conntrack: reduce size of l4protocol trackers
From: Pablo Neira Ayuso @ 2017-09-03 22:41 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478516-13224-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
can use u16 for both, shrinks size by another 8 bytes.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l4proto.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 47c16bae5e00..15c58dd3f701 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -92,12 +92,12 @@ struct nf_conntrack_l4proto {
#if IS_ENABLED(CONFIG_NF_CT_NETLINK_TIMEOUT)
struct {
- size_t obj_size;
int (*nlattr_to_obj)(struct nlattr *tb[],
struct net *net, void *data);
int (*obj_to_nlattr)(struct sk_buff *skb, const void *data);
- unsigned int nlattr_max;
+ u16 obj_size;
+ u16 nlattr_max;
const struct nla_policy *nla_policy;
} ctnl_timeout;
#endif
--
2.1.4
^ permalink raw reply related
* [PATCH 36/47] netfilter: conntrack: place print_tuple in procfs part
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
From: Florian Westphal <fw@strlen.de>
CONFIG_NF_CONNTRACK_PROCFS is deprecated, no need to use a function
pointer in the trackers for this. Place the printf formatting in
the one place that uses it.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l3proto.h | 4 --
include/net/netfilter/nf_conntrack_l4proto.h | 4 --
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c | 8 ----
net/ipv4/netfilter/nf_conntrack_proto_icmp.c | 11 -----
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c | 8 ----
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 11 -----
net/netfilter/nf_conntrack_l3proto_generic.c | 6 ---
net/netfilter/nf_conntrack_proto_dccp.c | 10 -----
net/netfilter/nf_conntrack_proto_generic.c | 7 ----
net/netfilter/nf_conntrack_proto_gre.c | 10 -----
net/netfilter/nf_conntrack_proto_sctp.c | 11 -----
net/netfilter/nf_conntrack_proto_tcp.c | 11 -----
net/netfilter/nf_conntrack_proto_udp.c | 13 ------
net/netfilter/nf_conntrack_standalone.c | 58 +++++++++++++++++++++++++-
14 files changed, 56 insertions(+), 116 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index e31861e4fa6a..dabb53b0913c 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -37,10 +37,6 @@ struct nf_conntrack_l3proto {
bool (*invert_tuple)(struct nf_conntrack_tuple *inverse,
const struct nf_conntrack_tuple *orig);
- /* Print out the per-protocol part of the tuple. */
- void (*print_tuple)(struct seq_file *s,
- const struct nf_conntrack_tuple *);
-
/*
* Called before tracking.
* *dataoff: offset of protocol header (TCP, UDP,...) in skb
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 15c58dd3f701..7e8da04a5eb6 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -61,10 +61,6 @@ struct nf_conntrack_l4proto {
/* called by gc worker if table is full */
bool (*can_early_drop)(const struct nf_conn *ct);
- /* Print out the per-protocol part of the tuple. Return like seq_* */
- void (*print_tuple)(struct seq_file *s,
- const struct nf_conntrack_tuple *);
-
/* Print out the private part of the conntrack. */
void (*print_conntrack)(struct seq_file *s, struct nf_conn *);
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
index 9f7ea862068c..fe374da4bc13 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
@@ -63,13 +63,6 @@ static bool ipv4_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-static void ipv4_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "src=%pI4 dst=%pI4 ",
- &tuple->src.u3.ip, &tuple->dst.u3.ip);
-}
-
static int ipv4_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
unsigned int *dataoff, u_int8_t *protonum)
{
@@ -355,7 +348,6 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4 __read_mostly = {
.l3proto = PF_INET,
.pkt_to_tuple = ipv4_pkt_to_tuple,
.invert_tuple = ipv4_invert_tuple,
- .print_tuple = ipv4_print_tuple,
.get_l4proto = ipv4_get_l4proto,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.tuple_to_nlattr = ipv4_tuple_to_nlattr,
diff --git a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
index fdbeb03e4600..434b4e20f6db 100644
--- a/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/nf_conntrack_proto_icmp.c
@@ -71,16 +71,6 @@ static bool icmp_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-/* Print out the per-protocol part of the tuple. */
-static void icmp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "type=%u code=%u id=%u ",
- tuple->dst.u.icmp.type,
- tuple->dst.u.icmp.code,
- ntohs(tuple->src.u.icmp.id));
-}
-
static unsigned int *icmp_get_timeouts(struct net *net)
{
return &icmp_pernet(net)->timeout;
@@ -364,7 +354,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp __read_mostly =
.l4proto = IPPROTO_ICMP,
.pkt_to_tuple = icmp_pkt_to_tuple,
.invert_tuple = icmp_invert_tuple,
- .print_tuple = icmp_print_tuple,
.packet = icmp_packet,
.get_timeouts = icmp_get_timeouts,
.new = icmp_new,
diff --git a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
index 91d37fbe28de..fe01dc953c56 100644
--- a/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
@@ -67,13 +67,6 @@ static bool ipv6_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-static void ipv6_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "src=%pI6 dst=%pI6 ",
- tuple->src.u3.ip6, tuple->dst.u3.ip6);
-}
-
static int ipv6_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
unsigned int *dataoff, u_int8_t *protonum)
{
@@ -350,7 +343,6 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = {
.l3proto = PF_INET6,
.pkt_to_tuple = ipv6_pkt_to_tuple,
.invert_tuple = ipv6_invert_tuple,
- .print_tuple = ipv6_print_tuple,
.get_l4proto = ipv6_get_l4proto,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.tuple_to_nlattr = ipv6_tuple_to_nlattr,
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index 805ab122767a..808f63e2e1ff 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -84,16 +84,6 @@ static bool icmpv6_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-/* Print out the per-protocol part of the tuple. */
-static void icmpv6_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "type=%u code=%u id=%u ",
- tuple->dst.u.icmp.type,
- tuple->dst.u.icmp.code,
- ntohs(tuple->src.u.icmp.id));
-}
-
static unsigned int *icmpv6_get_timeouts(struct net *net)
{
return &icmpv6_pernet(net)->timeout;
@@ -369,7 +359,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_icmpv6 __read_mostly =
.l4proto = IPPROTO_ICMPV6,
.pkt_to_tuple = icmpv6_pkt_to_tuple,
.invert_tuple = icmpv6_invert_tuple,
- .print_tuple = icmpv6_print_tuple,
.packet = icmpv6_packet,
.get_timeouts = icmpv6_get_timeouts,
.new = icmpv6_new,
diff --git a/net/netfilter/nf_conntrack_l3proto_generic.c b/net/netfilter/nf_conntrack_l3proto_generic.c
index 0387971582bc..397e6911214f 100644
--- a/net/netfilter/nf_conntrack_l3proto_generic.c
+++ b/net/netfilter/nf_conntrack_l3proto_generic.c
@@ -49,11 +49,6 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-static void generic_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
-}
-
static int generic_get_l4proto(const struct sk_buff *skb, unsigned int nhoff,
unsigned int *dataoff, u_int8_t *protonum)
{
@@ -66,7 +61,6 @@ struct nf_conntrack_l3proto nf_conntrack_l3proto_generic __read_mostly = {
.l3proto = PF_UNSPEC,
.pkt_to_tuple = generic_pkt_to_tuple,
.invert_tuple = generic_invert_tuple,
- .print_tuple = generic_print_tuple,
.get_l4proto = generic_get_l4proto,
};
EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_generic);
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index a0492184a0a8..d2df49ac390a 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -623,14 +623,6 @@ static bool dccp_can_early_drop(const struct nf_conn *ct)
return false;
}
-static void dccp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.dccp.port),
- ntohs(tuple->dst.u.dccp.port));
-}
-
static void dccp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
seq_printf(s, "%s ", dccp_state_names[ct->proto.dccp.state]);
@@ -887,7 +879,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp4 __read_mostly = {
.get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.can_early_drop = dccp_can_early_drop,
- .print_tuple = dccp_print_tuple,
.print_conntrack = dccp_print_conntrack,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.to_nlattr = dccp_to_nlattr,
@@ -922,7 +913,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp6 __read_mostly = {
.get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.can_early_drop = dccp_can_early_drop,
- .print_tuple = dccp_print_tuple,
.print_conntrack = dccp_print_conntrack,
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.to_nlattr = dccp_to_nlattr,
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index 4fe8b3312823..2bc3d0c1a5bf 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -62,12 +62,6 @@ static bool generic_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-/* Print out the per-protocol part of the tuple. */
-static void generic_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
-}
-
static unsigned int *generic_get_timeouts(struct net *net)
{
return &(generic_pernet(net)->timeout);
@@ -189,7 +183,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_generic __read_mostly =
.l4proto = 255,
.pkt_to_tuple = generic_pkt_to_tuple,
.invert_tuple = generic_invert_tuple,
- .print_tuple = generic_print_tuple,
.packet = generic_packet,
.get_timeouts = generic_get_timeouts,
.new = generic_new,
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 984bcfdbd4d7..cd28095dd7a4 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -224,15 +224,6 @@ static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
return true;
}
-/* print gre part of tuple */
-static void gre_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "srckey=0x%x dstkey=0x%x ",
- ntohs(tuple->src.u.gre.key),
- ntohs(tuple->dst.u.gre.key));
-}
-
/* print private data for conntrack */
static void gre_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
@@ -366,7 +357,6 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = {
.l4proto = IPPROTO_GRE,
.pkt_to_tuple = gre_pkt_to_tuple,
.invert_tuple = gre_invert_tuple,
- .print_tuple = gre_print_tuple,
.print_conntrack = gre_print_conntrack,
.get_timeouts = gre_get_timeouts,
.packet = gre_packet,
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index 1d7a995ea049..da83b401be17 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -174,15 +174,6 @@ static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-/* Print out the per-protocol part of the tuple. */
-static void sctp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.sctp.port),
- ntohs(tuple->dst.u.sctp.port));
-}
-
/* Print out the private part of the conntrack. */
static void sctp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
@@ -793,7 +784,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
.l4proto = IPPROTO_SCTP,
.pkt_to_tuple = sctp_pkt_to_tuple,
.invert_tuple = sctp_invert_tuple,
- .print_tuple = sctp_print_tuple,
.print_conntrack = sctp_print_conntrack,
.packet = sctp_packet,
.get_timeouts = sctp_get_timeouts,
@@ -829,7 +819,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
.l4proto = IPPROTO_SCTP,
.pkt_to_tuple = sctp_pkt_to_tuple,
.invert_tuple = sctp_invert_tuple,
- .print_tuple = sctp_print_tuple,
.print_conntrack = sctp_print_conntrack,
.packet = sctp_packet,
.get_timeouts = sctp_get_timeouts,
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index e3e59e3d0592..c868b36b8945 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -301,15 +301,6 @@ static bool tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-/* Print out the per-protocol part of the tuple. */
-static void tcp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.tcp.port),
- ntohs(tuple->dst.u.tcp.port));
-}
-
/* Print out the private part of the conntrack. */
static void tcp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
@@ -1558,7 +1549,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly =
.l4proto = IPPROTO_TCP,
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
- .print_tuple = tcp_print_tuple,
.print_conntrack = tcp_print_conntrack,
.packet = tcp_packet,
.get_timeouts = tcp_get_timeouts,
@@ -1595,7 +1585,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 __read_mostly =
.l4proto = IPPROTO_TCP,
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
- .print_tuple = tcp_print_tuple,
.print_conntrack = tcp_print_conntrack,
.packet = tcp_packet,
.get_timeouts = tcp_get_timeouts,
diff --git a/net/netfilter/nf_conntrack_proto_udp.c b/net/netfilter/nf_conntrack_proto_udp.c
index ec861a1169f1..dcf3030d2226 100644
--- a/net/netfilter/nf_conntrack_proto_udp.c
+++ b/net/netfilter/nf_conntrack_proto_udp.c
@@ -63,15 +63,6 @@ static bool udp_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
-/* Print out the per-protocol part of the tuple. */
-static void udp_print_tuple(struct seq_file *s,
- const struct nf_conntrack_tuple *tuple)
-{
- seq_printf(s, "sport=%hu dport=%hu ",
- ntohs(tuple->src.u.udp.port),
- ntohs(tuple->dst.u.udp.port));
-}
-
static unsigned int *udp_get_timeouts(struct net *net)
{
return udp_pernet(net)->timeouts;
@@ -316,7 +307,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4 __read_mostly =
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
- .print_tuple = udp_print_tuple,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
@@ -349,7 +339,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite4 __read_mostly =
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
- .print_tuple = udp_print_tuple,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
@@ -382,7 +371,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udp6 __read_mostly =
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
- .print_tuple = udp_print_tuple,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
@@ -415,7 +403,6 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_udplite6 __read_mostly =
.allow_clash = true,
.pkt_to_tuple = udp_pkt_to_tuple,
.invert_tuple = udp_invert_tuple,
- .print_tuple = udp_print_tuple,
.packet = udp_packet,
.get_timeouts = udp_get_timeouts,
.new = udp_new,
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index b28f9e93f574..9eb85858d764 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -41,8 +41,62 @@ print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_l3proto *l3proto,
const struct nf_conntrack_l4proto *l4proto)
{
- l3proto->print_tuple(s, tuple);
- l4proto->print_tuple(s, tuple);
+ switch (l3proto->l3proto) {
+ case NFPROTO_IPV4:
+ seq_printf(s, "src=%pI4 dst=%pI4 ",
+ &tuple->src.u3.ip, &tuple->dst.u3.ip);
+ break;
+ case NFPROTO_IPV6:
+ seq_printf(s, "src=%pI6 dst=%pI6 ",
+ tuple->src.u3.ip6, tuple->dst.u3.ip6);
+ break;
+ default:
+ break;
+ }
+
+ switch (l4proto->l4proto) {
+ case IPPROTO_ICMP:
+ seq_printf(s, "type=%u code=%u id=%u ",
+ tuple->dst.u.icmp.type,
+ tuple->dst.u.icmp.code,
+ ntohs(tuple->src.u.icmp.id));
+ break;
+ case IPPROTO_TCP:
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.tcp.port),
+ ntohs(tuple->dst.u.tcp.port));
+ break;
+ case IPPROTO_UDPLITE: /* fallthrough */
+ case IPPROTO_UDP:
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.udp.port),
+ ntohs(tuple->dst.u.udp.port));
+
+ break;
+ case IPPROTO_DCCP:
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.dccp.port),
+ ntohs(tuple->dst.u.dccp.port));
+ break;
+ case IPPROTO_SCTP:
+ seq_printf(s, "sport=%hu dport=%hu ",
+ ntohs(tuple->src.u.sctp.port),
+ ntohs(tuple->dst.u.sctp.port));
+ break;
+ case IPPROTO_ICMPV6:
+ seq_printf(s, "type=%u code=%u id=%u ",
+ tuple->dst.u.icmp.type,
+ tuple->dst.u.icmp.code,
+ ntohs(tuple->src.u.icmp.id));
+ break;
+ case IPPROTO_GRE:
+ seq_printf(s, "srckey=0x%x dstkey=0x%x ",
+ ntohs(tuple->src.u.gre.key),
+ ntohs(tuple->dst.u.gre.key));
+ break;
+ default:
+ break;
+ }
}
EXPORT_SYMBOL_GPL(print_tuple);
--
2.1.4
^ permalink raw reply related
* [PATCH 37/47] netfilter: conntrack: print_conntrack only needed if CONFIG_NF_CONNTRACK_PROCFS
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l4proto.h | 7 ++++---
net/netfilter/nf_conntrack_proto_dccp.c | 6 ++++++
net/netfilter/nf_conntrack_proto_gre.c | 4 ++++
net/netfilter/nf_conntrack_proto_sctp.c | 6 ++++++
net/netfilter/nf_conntrack_proto_tcp.c | 6 ++++++
5 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 7e8da04a5eb6..4976ef92dc78 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -61,9 +61,6 @@ struct nf_conntrack_l4proto {
/* called by gc worker if table is full */
bool (*can_early_drop)(const struct nf_conn *ct);
- /* Print out the private part of the conntrack. */
- void (*print_conntrack)(struct seq_file *s, struct nf_conn *);
-
/* Return the array of timeouts for this protocol. */
unsigned int *(*get_timeouts)(struct net *net);
@@ -97,6 +94,10 @@ struct nf_conntrack_l4proto {
const struct nla_policy *nla_policy;
} ctnl_timeout;
#endif
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
+ /* Print out the private part of the conntrack. */
+ void (*print_conntrack)(struct seq_file *s, struct nf_conn *);
+#endif
unsigned int *net_id;
/* Init l4proto pernet data */
int (*init_net)(struct net *net, u_int16_t proto);
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index d2df49ac390a..188347571fc7 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -623,10 +623,12 @@ static bool dccp_can_early_drop(const struct nf_conn *ct)
return false;
}
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
static void dccp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
seq_printf(s, "%s ", dccp_state_names[ct->proto.dccp.state]);
}
+#endif
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
static int dccp_to_nlattr(struct sk_buff *skb, struct nlattr *nla,
@@ -879,7 +881,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp4 __read_mostly = {
.get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.can_early_drop = dccp_can_early_drop,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = dccp_print_conntrack,
+#endif
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.to_nlattr = dccp_to_nlattr,
.nlattr_size = dccp_nlattr_size,
@@ -913,7 +917,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_dccp6 __read_mostly = {
.get_timeouts = dccp_get_timeouts,
.error = dccp_error,
.can_early_drop = dccp_can_early_drop,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = dccp_print_conntrack,
+#endif
#if IS_ENABLED(CONFIG_NF_CT_NETLINK)
.to_nlattr = dccp_to_nlattr,
.nlattr_size = dccp_nlattr_size,
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index cd28095dd7a4..c0e3a23ac23a 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -224,6 +224,7 @@ static bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
return true;
}
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
/* print private data for conntrack */
static void gre_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
@@ -231,6 +232,7 @@ static void gre_print_conntrack(struct seq_file *s, struct nf_conn *ct)
(ct->proto.gre.timeout / HZ),
(ct->proto.gre.stream_timeout / HZ));
}
+#endif
static unsigned int *gre_get_timeouts(struct net *net)
{
@@ -357,7 +359,9 @@ static struct nf_conntrack_l4proto nf_conntrack_l4proto_gre4 __read_mostly = {
.l4proto = IPPROTO_GRE,
.pkt_to_tuple = gre_pkt_to_tuple,
.invert_tuple = gre_invert_tuple,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = gre_print_conntrack,
+#endif
.get_timeouts = gre_get_timeouts,
.packet = gre_packet,
.new = gre_new,
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index da83b401be17..890b5c73368d 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -174,11 +174,13 @@ static bool sctp_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
/* Print out the private part of the conntrack. */
static void sctp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
seq_printf(s, "%s ", sctp_conntrack_names[ct->proto.sctp.state]);
}
+#endif
#define for_each_sctp_chunk(skb, sch, _sch, offset, dataoff, count) \
for ((offset) = (dataoff) + sizeof(struct sctphdr), (count) = 0; \
@@ -784,7 +786,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp4 __read_mostly = {
.l4proto = IPPROTO_SCTP,
.pkt_to_tuple = sctp_pkt_to_tuple,
.invert_tuple = sctp_invert_tuple,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = sctp_print_conntrack,
+#endif
.packet = sctp_packet,
.get_timeouts = sctp_get_timeouts,
.new = sctp_new,
@@ -819,7 +823,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_sctp6 __read_mostly = {
.l4proto = IPPROTO_SCTP,
.pkt_to_tuple = sctp_pkt_to_tuple,
.invert_tuple = sctp_invert_tuple,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = sctp_print_conntrack,
+#endif
.packet = sctp_packet,
.get_timeouts = sctp_get_timeouts,
.new = sctp_new,
diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index c868b36b8945..33c52d9ab2f5 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -301,11 +301,13 @@ static bool tcp_invert_tuple(struct nf_conntrack_tuple *tuple,
return true;
}
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
/* Print out the private part of the conntrack. */
static void tcp_print_conntrack(struct seq_file *s, struct nf_conn *ct)
{
seq_printf(s, "%s ", tcp_conntrack_names[ct->proto.tcp.state]);
}
+#endif
static unsigned int get_conntrack_index(const struct tcphdr *tcph)
{
@@ -1549,7 +1551,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4 __read_mostly =
.l4proto = IPPROTO_TCP,
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = tcp_print_conntrack,
+#endif
.packet = tcp_packet,
.get_timeouts = tcp_get_timeouts,
.new = tcp_new,
@@ -1585,7 +1589,9 @@ struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp6 __read_mostly =
.l4proto = IPPROTO_TCP,
.pkt_to_tuple = tcp_pkt_to_tuple,
.invert_tuple = tcp_invert_tuple,
+#ifdef CONFIG_NF_CONNTRACK_PROCFS
.print_conntrack = tcp_print_conntrack,
+#endif
.packet = tcp_packet,
.get_timeouts = tcp_get_timeouts,
.new = tcp_new,
--
2.1.4
^ permalink raw reply related
* [PATCH 38/47] netfilter: conntrack: make protocol tracker pointers const
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
Doesn't change generated code, but will make it easier to eventually
make the actual trackers themselvers const.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/net/netfilter/nf_conntrack_l3proto.h | 6 +++---
include/net/netfilter/nf_conntrack_l4proto.h | 4 ++--
include/net/netfilter/nf_conntrack_timeout.h | 2 +-
net/netfilter/nf_conntrack_core.c | 12 ++++++------
net/netfilter/nf_conntrack_netlink.c | 22 +++++++++++-----------
net/netfilter/nf_conntrack_proto.c | 20 ++++++++++----------
net/netfilter/nfnetlink_cttimeout.c | 14 +++++++-------
net/netfilter/xt_CT.c | 2 +-
net/openvswitch/conntrack.c | 4 ++--
9 files changed, 43 insertions(+), 43 deletions(-)
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index dabb53b0913c..6269deecbee7 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -64,10 +64,10 @@ struct nf_conntrack_l3proto {
extern struct nf_conntrack_l3proto __rcu *nf_ct_l3protos[NFPROTO_NUMPROTO];
/* Protocol global registration. */
-int nf_ct_l3proto_register(struct nf_conntrack_l3proto *proto);
-void nf_ct_l3proto_unregister(struct nf_conntrack_l3proto *proto);
+int nf_ct_l3proto_register(const struct nf_conntrack_l3proto *proto);
+void nf_ct_l3proto_unregister(const struct nf_conntrack_l3proto *proto);
-struct nf_conntrack_l3proto *nf_ct_l3proto_find_get(u_int16_t l3proto);
+const struct nf_conntrack_l3proto *nf_ct_l3proto_find_get(u_int16_t l3proto);
/* Existing built-in protocols */
extern struct nf_conntrack_l3proto nf_conntrack_l3proto_generic;
diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h
index 4976ef92dc78..d4933d56809d 100644
--- a/include/net/netfilter/nf_conntrack_l4proto.h
+++ b/include/net/netfilter/nf_conntrack_l4proto.h
@@ -114,10 +114,10 @@ extern struct nf_conntrack_l4proto nf_conntrack_l4proto_generic;
#define MAX_NF_CT_PROTO 256
-struct nf_conntrack_l4proto *__nf_ct_l4proto_find(u_int16_t l3proto,
+const struct nf_conntrack_l4proto *__nf_ct_l4proto_find(u_int16_t l3proto,
u_int8_t l4proto);
-struct nf_conntrack_l4proto *nf_ct_l4proto_find_get(u_int16_t l3proto,
+const struct nf_conntrack_l4proto *nf_ct_l4proto_find_get(u_int16_t l3proto,
u_int8_t l4proto);
void nf_ct_l4proto_put(const struct nf_conntrack_l4proto *p);
diff --git a/include/net/netfilter/nf_conntrack_timeout.h b/include/net/netfilter/nf_conntrack_timeout.h
index b222957062b5..483d104fa254 100644
--- a/include/net/netfilter/nf_conntrack_timeout.h
+++ b/include/net/netfilter/nf_conntrack_timeout.h
@@ -16,7 +16,7 @@ struct ctnl_timeout {
refcount_t refcnt;
char name[CTNL_TIMEOUT_NAME_MAX];
__u16 l3num;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
char data[0];
};
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index f2f00eaf217d..c23df7c9cd59 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -250,8 +250,8 @@ bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
u_int16_t l3num,
struct net *net, struct nf_conntrack_tuple *tuple)
{
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
unsigned int protoff;
u_int8_t protonum;
int ret;
@@ -400,7 +400,7 @@ static void
destroy_conntrack(struct nf_conntrack *nfct)
{
struct nf_conn *ct = (struct nf_conn *)nfct;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
pr_debug("destroy_conntrack(%p)\n", ct);
NF_CT_ASSERT(atomic_read(&nfct->use) == 0);
@@ -694,7 +694,7 @@ static int nf_ct_resolve_clash(struct net *net, struct sk_buff *skb,
{
/* This is the conntrack entry already in hashes that won race. */
struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(h);
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct));
if (l4proto->allow_clash &&
@@ -1344,10 +1344,10 @@ unsigned int
nf_conntrack_in(struct net *net, u_int8_t pf, unsigned int hooknum,
struct sk_buff *skb)
{
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
struct nf_conn *ct, *tmpl;
enum ip_conntrack_info ctinfo;
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_l4proto *l4proto;
unsigned int *timeouts;
unsigned int dataoff;
u_int8_t protonum;
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index b59a453a0fd8..de4053d84364 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -109,9 +109,9 @@ static int ctnetlink_dump_tuples_ip(struct sk_buff *skb,
static int ctnetlink_dump_tuples(struct sk_buff *skb,
const struct nf_conntrack_tuple *tuple)
{
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
int ret;
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_l4proto *l4proto;
rcu_read_lock();
l3proto = __nf_ct_l3proto_find(tuple->src.l3num);
@@ -163,7 +163,7 @@ static int ctnetlink_dump_timeout(struct sk_buff *skb, const struct nf_conn *ct)
static int ctnetlink_dump_protoinfo(struct sk_buff *skb, struct nf_conn *ct)
{
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
struct nlattr *nest_proto;
int ret;
@@ -535,9 +535,9 @@ ctnetlink_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
static inline size_t ctnetlink_proto_size(const struct nf_conn *ct)
{
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_l4proto *l4proto;
- size_t len = 0;
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
+ size_t len;
l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct));
len = l3proto->nla_size;
@@ -936,8 +936,8 @@ static const struct nla_policy proto_nla_policy[CTA_PROTO_MAX+1] = {
static int ctnetlink_parse_tuple_proto(struct nlattr *attr,
struct nf_conntrack_tuple *tuple)
{
+ const struct nf_conntrack_l4proto *l4proto;
struct nlattr *tb[CTA_PROTO_MAX+1];
- struct nf_conntrack_l4proto *l4proto;
int ret = 0;
ret = nla_parse_nested(tb, CTA_PROTO_MAX, attr, proto_nla_policy,
@@ -1580,8 +1580,8 @@ static int ctnetlink_change_protoinfo(struct nf_conn *ct,
const struct nlattr * const cda[])
{
const struct nlattr *attr = cda[CTA_PROTOINFO];
+ const struct nf_conntrack_l4proto *l4proto;
struct nlattr *tb[CTA_PROTOINFO_MAX+1];
- struct nf_conntrack_l4proto *l4proto;
int err = 0;
err = nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr, protoinfo_policy,
@@ -2475,11 +2475,11 @@ static int ctnetlink_exp_dump_mask(struct sk_buff *skb,
const struct nf_conntrack_tuple *tuple,
const struct nf_conntrack_tuple_mask *mask)
{
- int ret;
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
struct nf_conntrack_tuple m;
struct nlattr *nest_parms;
+ int ret;
memset(&m, 0xFF, sizeof(m));
memcpy(&m.src.u3, &mask->src.u3, sizeof(m.src.u3));
diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
index 0ecab7163d62..b3e489c859ec 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -65,7 +65,7 @@ nf_ct_unregister_sysctl(struct ctl_table_header **header,
}
#endif
-struct nf_conntrack_l4proto *
+const struct nf_conntrack_l4proto *
__nf_ct_l4proto_find(u_int16_t l3proto, u_int8_t l4proto)
{
if (unlikely(l3proto >= NFPROTO_NUMPROTO || nf_ct_protos[l3proto] == NULL))
@@ -77,7 +77,7 @@ EXPORT_SYMBOL_GPL(__nf_ct_l4proto_find);
/* this is guaranteed to always return a valid protocol helper, since
* it falls back to generic_protocol */
-struct nf_conntrack_l3proto *
+const struct nf_conntrack_l3proto *
nf_ct_l3proto_find_get(u_int16_t l3proto)
{
struct nf_conntrack_l3proto *p;
@@ -95,8 +95,8 @@ EXPORT_SYMBOL_GPL(nf_ct_l3proto_find_get);
int
nf_ct_l3proto_try_module_get(unsigned short l3proto)
{
+ const struct nf_conntrack_l3proto *p;
int ret;
- struct nf_conntrack_l3proto *p;
retry: p = nf_ct_l3proto_find_get(l3proto);
if (p == &nf_conntrack_l3proto_generic) {
@@ -173,10 +173,10 @@ void nf_ct_netns_put(struct net *net, u8 nfproto)
}
EXPORT_SYMBOL_GPL(nf_ct_netns_put);
-struct nf_conntrack_l4proto *
+const struct nf_conntrack_l4proto *
nf_ct_l4proto_find_get(u_int16_t l3num, u_int8_t l4num)
{
- struct nf_conntrack_l4proto *p;
+ const struct nf_conntrack_l4proto *p;
rcu_read_lock();
p = __nf_ct_l4proto_find(l3num, l4num);
@@ -196,18 +196,18 @@ EXPORT_SYMBOL_GPL(nf_ct_l4proto_put);
static int kill_l3proto(struct nf_conn *i, void *data)
{
- return nf_ct_l3num(i) == ((struct nf_conntrack_l3proto *)data)->l3proto;
+ return nf_ct_l3num(i) == ((const struct nf_conntrack_l3proto *)data)->l3proto;
}
static int kill_l4proto(struct nf_conn *i, void *data)
{
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
l4proto = data;
return nf_ct_protonum(i) == l4proto->l4proto &&
nf_ct_l3num(i) == l4proto->l3proto;
}
-int nf_ct_l3proto_register(struct nf_conntrack_l3proto *proto)
+int nf_ct_l3proto_register(const struct nf_conntrack_l3proto *proto)
{
int ret = 0;
struct nf_conntrack_l3proto *old;
@@ -235,7 +235,7 @@ int nf_ct_l3proto_register(struct nf_conntrack_l3proto *proto)
}
EXPORT_SYMBOL_GPL(nf_ct_l3proto_register);
-void nf_ct_l3proto_unregister(struct nf_conntrack_l3proto *proto)
+void nf_ct_l3proto_unregister(const struct nf_conntrack_l3proto *proto)
{
BUG_ON(proto->l3proto >= NFPROTO_NUMPROTO);
@@ -249,7 +249,7 @@ void nf_ct_l3proto_unregister(struct nf_conntrack_l3proto *proto)
synchronize_rcu();
/* Remove all contrack entries for this protocol */
- nf_ct_iterate_destroy(kill_l3proto, proto);
+ nf_ct_iterate_destroy(kill_l3proto, (void*)proto);
}
EXPORT_SYMBOL_GPL(nf_ct_l3proto_unregister);
diff --git a/net/netfilter/nfnetlink_cttimeout.c b/net/netfilter/nfnetlink_cttimeout.c
index fcabccc99f0d..32b1c0b44e79 100644
--- a/net/netfilter/nfnetlink_cttimeout.c
+++ b/net/netfilter/nfnetlink_cttimeout.c
@@ -75,7 +75,7 @@ static int cttimeout_new_timeout(struct net *net, struct sock *ctnl,
{
__u16 l3num;
__u8 l4num;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
struct ctnl_timeout *timeout, *matching = NULL;
char *name;
int ret;
@@ -159,7 +159,7 @@ ctnl_timeout_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
struct nlmsghdr *nlh;
struct nfgenmsg *nfmsg;
unsigned int flags = portid ? NLM_F_MULTI : 0;
- struct nf_conntrack_l4proto *l4proto = timeout->l4proto;
+ const struct nf_conntrack_l4proto *l4proto = timeout->l4proto;
event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK_TIMEOUT, event);
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
@@ -364,10 +364,10 @@ static int cttimeout_default_set(struct net *net, struct sock *ctnl,
const struct nlattr * const cda[],
struct netlink_ext_ack *extack)
{
+ const struct nf_conntrack_l4proto *l4proto;
+ unsigned int *timeouts;
__u16 l3num;
__u8 l4num;
- struct nf_conntrack_l4proto *l4proto;
- unsigned int *timeouts;
int ret;
if (!cda[CTA_TIMEOUT_L3PROTO] ||
@@ -454,11 +454,11 @@ static int cttimeout_default_get(struct net *net, struct sock *ctnl,
const struct nlattr * const cda[],
struct netlink_ext_ack *extack)
{
- __u16 l3num;
- __u8 l4num;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l4proto *l4proto;
struct sk_buff *skb2;
int ret, err;
+ __u16 l3num;
+ __u8 l4num;
if (!cda[CTA_TIMEOUT_L3PROTO] || !cda[CTA_TIMEOUT_L4PROTO])
return -EINVAL;
diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c
index 623ef37de886..5a152e2acfd5 100644
--- a/net/netfilter/xt_CT.c
+++ b/net/netfilter/xt_CT.c
@@ -121,9 +121,9 @@ xt_ct_set_timeout(struct nf_conn *ct, const struct xt_tgchk_param *par,
{
#ifdef CONFIG_NF_CONNTRACK_TIMEOUT
typeof(nf_ct_timeout_find_get_hook) timeout_find_get;
+ const struct nf_conntrack_l4proto *l4proto;
struct ctnl_timeout *timeout;
struct nf_conn_timeout *timeout_ext;
- struct nf_conntrack_l4proto *l4proto;
int ret = 0;
u8 proto;
diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index e3c4c6c3fef7..283363534647 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -579,8 +579,8 @@ static struct nf_conn *
ovs_ct_find_existing(struct net *net, const struct nf_conntrack_zone *zone,
u8 l3num, struct sk_buff *skb, bool natted)
{
- struct nf_conntrack_l3proto *l3proto;
- struct nf_conntrack_l4proto *l4proto;
+ const struct nf_conntrack_l3proto *l3proto;
+ const struct nf_conntrack_l4proto *l4proto;
struct nf_conntrack_tuple tuple;
struct nf_conntrack_tuple_hash *h;
struct nf_conn *ct;
--
2.1.4
^ permalink raw reply related
* [PATCH 40/47] netfilter: fix a few (harmless) sparse warnings
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
net/netfilter/nft_payload.c:187:18: warning: incorrect type in return expression (expected bool got restricted __sum16 [usertype] check)
net/netfilter/nft_exthdr.c:222:14: warning: cast to restricted __be32
net/netfilter/nft_rt.c:49:23: warning: incorrect type in assignment (different base types expected unsigned int got restricted __be32)
net/netfilter/nft_rt.c:70:25: warning: symbol 'nft_rt_policy' was not declared. Should it be static?
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_exthdr.c | 2 +-
net/netfilter/nft_payload.c | 2 +-
net/netfilter/nft_rt.c | 6 +++---
3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/net/netfilter/nft_exthdr.c b/net/netfilter/nft_exthdr.c
index f5a0bf5e3bdd..a0a93d987a3b 100644
--- a/net/netfilter/nft_exthdr.c
+++ b/net/netfilter/nft_exthdr.c
@@ -388,7 +388,7 @@ nft_exthdr_select_ops(const struct nft_ctx *ctx,
if (tb[NFTA_EXTHDR_SREG] && tb[NFTA_EXTHDR_DREG])
return ERR_PTR(-EOPNOTSUPP);
- op = ntohl(nla_get_u32(tb[NFTA_EXTHDR_OP]));
+ op = ntohl(nla_get_be32(tb[NFTA_EXTHDR_OP]));
switch (op) {
case NFT_EXTHDR_OP_TCPOPT:
if (tb[NFTA_EXTHDR_SREG])
diff --git a/net/netfilter/nft_payload.c b/net/netfilter/nft_payload.c
index 7d699bbd45b0..e110b0ebbf58 100644
--- a/net/netfilter/nft_payload.c
+++ b/net/netfilter/nft_payload.c
@@ -184,7 +184,7 @@ static bool nft_payload_udp_checksum(struct sk_buff *skb, unsigned int thoff)
if (!uh)
return false;
- return uh->check;
+ return (__force bool)uh->check;
}
static int nft_payload_l4csum_offset(const struct nft_pktinfo *pkt,
diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c
index e142e65d3176..61fd3acaa3c9 100644
--- a/net/netfilter/nft_rt.c
+++ b/net/netfilter/nft_rt.c
@@ -82,8 +82,8 @@ static void nft_rt_get_eval(const struct nft_expr *expr,
if (nft_pf(pkt) != NFPROTO_IPV4)
goto err;
- *dest = rt_nexthop((const struct rtable *)dst,
- ip_hdr(skb)->daddr);
+ *dest = (__force u32)rt_nexthop((const struct rtable *)dst,
+ ip_hdr(skb)->daddr);
break;
case NFT_RT_NEXTHOP6:
if (nft_pf(pkt) != NFPROTO_IPV6)
@@ -106,7 +106,7 @@ static void nft_rt_get_eval(const struct nft_expr *expr,
regs->verdict.code = NFT_BREAK;
}
-const struct nla_policy nft_rt_policy[NFTA_RT_MAX + 1] = {
+static const struct nla_policy nft_rt_policy[NFTA_RT_MAX + 1] = {
[NFTA_RT_DREG] = { .type = NLA_U32 },
[NFTA_RT_KEY] = { .type = NLA_U32 },
};
--
2.1.4
^ permalink raw reply related
* [PATCH 41/47] netfilter: convert hook list to an array
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Aaron Conole <aconole@bytheb.org>
This converts the storage and layout of netfilter hook entries from a
linked list to an array. After this commit, hook entries will be
stored adjacent in memory. The next pointer is no longer required.
The ops pointers are stored at the end of the array as they are only
used in the register/unregister path and in the legacy br_netfilter code.
nf_unregister_net_hooks() is slower than needed as it just calls
nf_unregister_net_hook in a loop (i.e. at least n synchronize_net()
calls), this will be addressed in followup patch.
Test setup:
- ixgbe 10gbit
- netperf UDP_STREAM, 64 byte packets
- 5 hooks: (raw + mangle prerouting, mangle+filter input, inet filter):
empty mangle and raw prerouting, mangle and filter input hooks:
353.9
this patch:
364.2
Signed-off-by: Aaron Conole <aconole@bytheb.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
include/linux/netdevice.h | 2 +-
include/linux/netfilter.h | 45 +++---
include/linux/netfilter_ingress.h | 4 +-
include/net/netfilter/nf_queue.h | 2 +-
include/net/netns/netfilter.h | 2 +-
net/bridge/br_netfilter_hooks.c | 19 ++-
net/netfilter/core.c | 297 ++++++++++++++++++++++++++++----------
net/netfilter/nf_internals.h | 3 +-
net/netfilter/nf_queue.c | 67 +++++----
9 files changed, 307 insertions(+), 134 deletions(-)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 614642eb7eb7..ca0a30127300 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1811,7 +1811,7 @@ struct net_device {
#endif
struct netdev_queue __rcu *ingress_queue;
#ifdef CONFIG_NETFILTER_INGRESS
- struct nf_hook_entry __rcu *nf_hooks_ingress;
+ struct nf_hook_entries __rcu *nf_hooks_ingress;
#endif
unsigned char broadcast[MAX_ADDR_LEN];
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 22f081065d49..f84bca1703cd 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -72,25 +72,32 @@ struct nf_hook_ops {
};
struct nf_hook_entry {
- struct nf_hook_entry __rcu *next;
nf_hookfn *hook;
void *priv;
- const struct nf_hook_ops *orig_ops;
};
-static inline void
-nf_hook_entry_init(struct nf_hook_entry *entry, const struct nf_hook_ops *ops)
-{
- entry->next = NULL;
- entry->hook = ops->hook;
- entry->priv = ops->priv;
- entry->orig_ops = ops;
-}
+struct nf_hook_entries {
+ u16 num_hook_entries;
+ /* padding */
+ struct nf_hook_entry hooks[];
+
+ /* trailer: pointers to original orig_ops of each hook.
+ *
+ * This is not part of struct nf_hook_entry since its only
+ * needed in slow path (hook register/unregister).
+ *
+ * const struct nf_hook_ops *orig_ops[]
+ */
+};
-static inline int
-nf_hook_entry_priority(const struct nf_hook_entry *entry)
+static inline struct nf_hook_ops **nf_hook_entries_get_hook_ops(const struct nf_hook_entries *e)
{
- return entry->orig_ops->priority;
+ unsigned int n = e->num_hook_entries;
+ const void *hook_end;
+
+ hook_end = &e->hooks[n]; /* this is *past* ->hooks[]! */
+
+ return (struct nf_hook_ops **)hook_end;
}
static inline int
@@ -100,12 +107,6 @@ nf_hook_entry_hookfn(const struct nf_hook_entry *entry, struct sk_buff *skb,
return entry->hook(entry->priv, skb, state);
}
-static inline const struct nf_hook_ops *
-nf_hook_entry_ops(const struct nf_hook_entry *entry)
-{
- return entry->orig_ops;
-}
-
static inline void nf_hook_state_init(struct nf_hook_state *p,
unsigned int hook,
u_int8_t pf,
@@ -168,7 +169,7 @@ extern struct static_key nf_hooks_needed[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
#endif
int nf_hook_slow(struct sk_buff *skb, struct nf_hook_state *state,
- struct nf_hook_entry *entry);
+ const struct nf_hook_entries *e, unsigned int i);
/**
* nf_hook - call a netfilter hook
@@ -182,7 +183,7 @@ static inline int nf_hook(u_int8_t pf, unsigned int hook, struct net *net,
struct net_device *indev, struct net_device *outdev,
int (*okfn)(struct net *, struct sock *, struct sk_buff *))
{
- struct nf_hook_entry *hook_head;
+ struct nf_hook_entries *hook_head;
int ret = 1;
#ifdef HAVE_JUMP_LABEL
@@ -200,7 +201,7 @@ static inline int nf_hook(u_int8_t pf, unsigned int hook, struct net *net,
nf_hook_state_init(&state, hook, pf, indev, outdev,
sk, net, okfn);
- ret = nf_hook_slow(skb, &state, hook_head);
+ ret = nf_hook_slow(skb, &state, hook_head, 0);
}
rcu_read_unlock();
diff --git a/include/linux/netfilter_ingress.h b/include/linux/netfilter_ingress.h
index 59476061de86..8d5dae1e2ff8 100644
--- a/include/linux/netfilter_ingress.h
+++ b/include/linux/netfilter_ingress.h
@@ -17,7 +17,7 @@ static inline bool nf_hook_ingress_active(const struct sk_buff *skb)
/* caller must hold rcu_read_lock */
static inline int nf_hook_ingress(struct sk_buff *skb)
{
- struct nf_hook_entry *e = rcu_dereference(skb->dev->nf_hooks_ingress);
+ struct nf_hook_entries *e = rcu_dereference(skb->dev->nf_hooks_ingress);
struct nf_hook_state state;
int ret;
@@ -30,7 +30,7 @@ static inline int nf_hook_ingress(struct sk_buff *skb)
nf_hook_state_init(&state, NF_NETDEV_INGRESS,
NFPROTO_NETDEV, skb->dev, NULL, NULL,
dev_net(skb->dev), NULL);
- ret = nf_hook_slow(skb, &state, e);
+ ret = nf_hook_slow(skb, &state, e, 0);
if (ret == 0)
return -1;
diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
index 4454719ff849..39468720fc19 100644
--- a/include/net/netfilter/nf_queue.h
+++ b/include/net/netfilter/nf_queue.h
@@ -10,9 +10,9 @@ struct nf_queue_entry {
struct list_head list;
struct sk_buff *skb;
unsigned int id;
+ unsigned int hook_index; /* index in hook_entries->hook[] */
struct nf_hook_state state;
- struct nf_hook_entry *hook;
u16 size; /* sizeof(entry) + saved route keys */
/* extra space to store route keys */
diff --git a/include/net/netns/netfilter.h b/include/net/netns/netfilter.h
index cea396b53a60..72d66c8763d0 100644
--- a/include/net/netns/netfilter.h
+++ b/include/net/netns/netfilter.h
@@ -16,7 +16,7 @@ struct netns_nf {
#ifdef CONFIG_SYSCTL
struct ctl_table_header *nf_log_dir_header;
#endif
- struct nf_hook_entry __rcu *hooks[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
+ struct nf_hook_entries __rcu *hooks[NFPROTO_NUMPROTO][NF_MAX_HOOKS];
#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4)
bool defrag_ipv4;
#endif
diff --git a/net/bridge/br_netfilter_hooks.c b/net/bridge/br_netfilter_hooks.c
index 626f4b2cef16..c2eea1b8737a 100644
--- a/net/bridge/br_netfilter_hooks.c
+++ b/net/bridge/br_netfilter_hooks.c
@@ -985,22 +985,25 @@ int br_nf_hook_thresh(unsigned int hook, struct net *net,
int (*okfn)(struct net *, struct sock *,
struct sk_buff *))
{
- struct nf_hook_entry *elem;
+ const struct nf_hook_entries *e;
struct nf_hook_state state;
+ struct nf_hook_ops **ops;
+ unsigned int i;
int ret;
- for (elem = rcu_dereference(net->nf.hooks[NFPROTO_BRIDGE][hook]);
- elem && nf_hook_entry_priority(elem) <= NF_BR_PRI_BRNF;
- elem = rcu_dereference(elem->next))
- ;
-
- if (!elem)
+ e = rcu_dereference(net->nf.hooks[NFPROTO_BRIDGE][hook]);
+ if (!e)
return okfn(net, sk, skb);
+ ops = nf_hook_entries_get_hook_ops(e);
+ for (i = 0; i < e->num_hook_entries &&
+ ops[i]->priority <= NF_BR_PRI_BRNF; i++)
+ ;
+
nf_hook_state_init(&state, hook, NFPROTO_BRIDGE, indev, outdev,
sk, net, okfn);
- ret = nf_hook_slow(skb, &state, elem);
+ ret = nf_hook_slow(skb, &state, e, i);
if (ret == 1)
ret = okfn(net, sk, skb);
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 974cf2a3795a..1a9e23c9ab98 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -21,7 +21,7 @@
#include <linux/inetdevice.h>
#include <linux/proc_fs.h>
#include <linux/mutex.h>
-#include <linux/slab.h>
+#include <linux/mm.h>
#include <linux/rcupdate.h>
#include <net/net_namespace.h>
#include <net/sock.h>
@@ -62,10 +62,160 @@ EXPORT_SYMBOL(nf_hooks_needed);
#endif
static DEFINE_MUTEX(nf_hook_mutex);
+
+/* max hooks per family/hooknum */
+#define MAX_HOOK_COUNT 1024
+
#define nf_entry_dereference(e) \
rcu_dereference_protected(e, lockdep_is_held(&nf_hook_mutex))
-static struct nf_hook_entry __rcu **nf_hook_entry_head(struct net *net, const struct nf_hook_ops *reg)
+static struct nf_hook_entries *allocate_hook_entries_size(u16 num)
+{
+ struct nf_hook_entries *e;
+ size_t alloc = sizeof(*e) +
+ sizeof(struct nf_hook_entry) * num +
+ sizeof(struct nf_hook_ops *) * num;
+
+ if (num == 0)
+ return NULL;
+
+ e = kvzalloc(alloc, GFP_KERNEL);
+ if (e)
+ e->num_hook_entries = num;
+ return e;
+}
+
+static unsigned int accept_all(void *priv,
+ struct sk_buff *skb,
+ const struct nf_hook_state *state)
+{
+ return NF_ACCEPT; /* ACCEPT makes nf_hook_slow call next hook */
+}
+
+static const struct nf_hook_ops dummy_ops = {
+ .hook = accept_all,
+ .priority = INT_MIN,
+};
+
+static struct nf_hook_entries *
+nf_hook_entries_grow(const struct nf_hook_entries *old,
+ const struct nf_hook_ops *reg)
+{
+ unsigned int i, alloc_entries, nhooks, old_entries;
+ struct nf_hook_ops **orig_ops = NULL;
+ struct nf_hook_ops **new_ops;
+ struct nf_hook_entries *new;
+ bool inserted = false;
+
+ alloc_entries = 1;
+ old_entries = old ? old->num_hook_entries : 0;
+
+ if (old) {
+ orig_ops = nf_hook_entries_get_hook_ops(old);
+
+ for (i = 0; i < old_entries; i++) {
+ if (orig_ops[i] != &dummy_ops)
+ alloc_entries++;
+ }
+ }
+
+ if (alloc_entries > MAX_HOOK_COUNT)
+ return ERR_PTR(-E2BIG);
+
+ new = allocate_hook_entries_size(alloc_entries);
+ if (!new)
+ return ERR_PTR(-ENOMEM);
+
+ new_ops = nf_hook_entries_get_hook_ops(new);
+
+ i = 0;
+ nhooks = 0;
+ while (i < old_entries) {
+ if (orig_ops[i] == &dummy_ops) {
+ ++i;
+ continue;
+ }
+ if (inserted || reg->priority > orig_ops[i]->priority) {
+ new_ops[nhooks] = (void *)orig_ops[i];
+ new->hooks[nhooks] = old->hooks[i];
+ i++;
+ } else {
+ new_ops[nhooks] = (void *)reg;
+ new->hooks[nhooks].hook = reg->hook;
+ new->hooks[nhooks].priv = reg->priv;
+ inserted = true;
+ }
+ nhooks++;
+ }
+
+ if (!inserted) {
+ new_ops[nhooks] = (void *)reg;
+ new->hooks[nhooks].hook = reg->hook;
+ new->hooks[nhooks].priv = reg->priv;
+ }
+
+ return new;
+}
+
+/*
+ * __nf_hook_entries_try_shrink - try to shrink hook array
+ *
+ * @pp -- location of hook blob
+ *
+ * Hook unregistration must always succeed, so to-be-removed hooks
+ * are replaced by a dummy one that will just move to next hook.
+ *
+ * This counts the current dummy hooks, attempts to allocate new blob,
+ * copies the live hooks, then replaces and discards old one.
+ *
+ * return values:
+ *
+ * Returns address to free, or NULL.
+ */
+static void *__nf_hook_entries_try_shrink(struct nf_hook_entries __rcu **pp)
+{
+ struct nf_hook_entries *old, *new = NULL;
+ unsigned int i, j, skip = 0, hook_entries;
+ struct nf_hook_ops **orig_ops;
+ struct nf_hook_ops **new_ops;
+
+ old = nf_entry_dereference(*pp);
+ if (WARN_ON_ONCE(!old))
+ return NULL;
+
+ orig_ops = nf_hook_entries_get_hook_ops(old);
+ for (i = 0; i < old->num_hook_entries; i++) {
+ if (orig_ops[i] == &dummy_ops)
+ skip++;
+ }
+
+ /* if skip == hook_entries all hooks have been removed */
+ hook_entries = old->num_hook_entries;
+ if (skip == hook_entries)
+ goto out_assign;
+
+ if (WARN_ON(skip == 0))
+ return NULL;
+
+ hook_entries -= skip;
+ new = allocate_hook_entries_size(hook_entries);
+ if (!new)
+ return NULL;
+
+ new_ops = nf_hook_entries_get_hook_ops(new);
+ for (i = 0, j = 0; i < old->num_hook_entries; i++) {
+ if (orig_ops[i] == &dummy_ops)
+ continue;
+ new->hooks[j] = old->hooks[i];
+ new_ops[j] = (void *)orig_ops[i];
+ j++;
+ }
+out_assign:
+ rcu_assign_pointer(*pp, new);
+ return old;
+}
+
+static struct nf_hook_entries __rcu **nf_hook_entry_head(struct net *net, const struct nf_hook_ops *reg)
{
if (reg->pf != NFPROTO_NETDEV)
return net->nf.hooks[reg->pf]+reg->hooknum;
@@ -76,13 +226,14 @@ static struct nf_hook_entry __rcu **nf_hook_entry_head(struct net *net, const st
return ®->dev->nf_hooks_ingress;
}
#endif
+ WARN_ON_ONCE(1);
return NULL;
}
int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg)
{
- struct nf_hook_entry __rcu **pp;
- struct nf_hook_entry *entry, *p;
+ struct nf_hook_entries *p, *new_hooks;
+ struct nf_hook_entries __rcu **pp;
if (reg->pf == NFPROTO_NETDEV) {
#ifndef CONFIG_NETFILTER_INGRESS
@@ -98,23 +249,18 @@ int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg)
if (!pp)
return -EINVAL;
- entry = kmalloc(sizeof(*entry), GFP_KERNEL);
- if (!entry)
- return -ENOMEM;
-
- nf_hook_entry_init(entry, reg);
-
mutex_lock(&nf_hook_mutex);
- /* Find the spot in the list */
- for (; (p = nf_entry_dereference(*pp)) != NULL; pp = &p->next) {
- if (reg->priority < nf_hook_entry_priority(p))
- break;
- }
- rcu_assign_pointer(entry->next, p);
- rcu_assign_pointer(*pp, entry);
+ p = nf_entry_dereference(*pp);
+ new_hooks = nf_hook_entries_grow(p, reg);
+
+ if (!IS_ERR(new_hooks))
+ rcu_assign_pointer(*pp, new_hooks);
mutex_unlock(&nf_hook_mutex);
+ if (IS_ERR(new_hooks))
+ return PTR_ERR(new_hooks);
+
#ifdef CONFIG_NETFILTER_INGRESS
if (reg->pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)
net_inc_ingress_queue();
@@ -122,48 +268,74 @@ int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg)
#ifdef HAVE_JUMP_LABEL
static_key_slow_inc(&nf_hooks_needed[reg->pf][reg->hooknum]);
#endif
+ synchronize_net();
+ BUG_ON(p == new_hooks);
+ kvfree(p);
return 0;
}
EXPORT_SYMBOL(nf_register_net_hook);
-static struct nf_hook_entry *
-__nf_unregister_net_hook(struct net *net, const struct nf_hook_ops *reg)
+/*
+ * __nf_unregister_net_hook - remove a hook from blob
+ *
+ * @oldp: current address of hook blob
+ * @unreg: hook to unregister
+ *
+ * This cannot fail, hook unregistration must always succeed.
+ * Therefore replace the to-be-removed hook with a dummy hook.
+ */
+static void __nf_unregister_net_hook(struct nf_hook_entries *old,
+ const struct nf_hook_ops *unreg)
{
- struct nf_hook_entry __rcu **pp;
- struct nf_hook_entry *p;
-
- pp = nf_hook_entry_head(net, reg);
- if (WARN_ON_ONCE(!pp))
- return NULL;
+ struct nf_hook_ops **orig_ops;
+ bool found = false;
+ unsigned int i;
- mutex_lock(&nf_hook_mutex);
- for (; (p = nf_entry_dereference(*pp)) != NULL; pp = &p->next) {
- if (nf_hook_entry_ops(p) == reg) {
- rcu_assign_pointer(*pp, p->next);
- break;
- }
- }
- mutex_unlock(&nf_hook_mutex);
- if (!p) {
- WARN(1, "nf_unregister_net_hook: hook not found!\n");
- return NULL;
+ orig_ops = nf_hook_entries_get_hook_ops(old);
+ for (i = 0; i < old->num_hook_entries; i++) {
+ if (orig_ops[i] != unreg)
+ continue;
+ WRITE_ONCE(old->hooks[i].hook, accept_all);
+ WRITE_ONCE(orig_ops[i], &dummy_ops);
+ found = true;
+ break;
}
+
+ if (found) {
#ifdef CONFIG_NETFILTER_INGRESS
- if (reg->pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)
- net_dec_ingress_queue();
+ if (unreg->pf == NFPROTO_NETDEV && unreg->hooknum == NF_NETDEV_INGRESS)
+ net_dec_ingress_queue();
#endif
#ifdef HAVE_JUMP_LABEL
- static_key_slow_dec(&nf_hooks_needed[reg->pf][reg->hooknum]);
+ static_key_slow_dec(&nf_hooks_needed[unreg->pf][unreg->hooknum]);
#endif
-
- return p;
+ } else {
+ WARN_ONCE(1, "hook not found, pf %d num %d", unreg->pf, unreg->hooknum);
+ }
}
void nf_unregister_net_hook(struct net *net, const struct nf_hook_ops *reg)
{
- struct nf_hook_entry *p = __nf_unregister_net_hook(net, reg);
+ struct nf_hook_entries __rcu **pp;
+ struct nf_hook_entries *p;
unsigned int nfq;
+ pp = nf_hook_entry_head(net, reg);
+ if (!pp)
+ return;
+
+ mutex_lock(&nf_hook_mutex);
+
+ p = nf_entry_dereference(*pp);
+ if (WARN_ON_ONCE(!p)) {
+ mutex_unlock(&nf_hook_mutex);
+ return;
+ }
+
+ __nf_unregister_net_hook(p, reg);
+
+ p = __nf_hook_entries_try_shrink(pp);
+ mutex_unlock(&nf_hook_mutex);
if (!p)
return;
@@ -173,7 +345,7 @@ void nf_unregister_net_hook(struct net *net, const struct nf_hook_ops *reg)
nfq = nf_queue_nf_hook_drop(net);
if (nfq)
synchronize_net();
- kfree(p);
+ kvfree(p);
}
EXPORT_SYMBOL(nf_unregister_net_hook);
@@ -200,46 +372,25 @@ EXPORT_SYMBOL(nf_register_net_hooks);
void nf_unregister_net_hooks(struct net *net, const struct nf_hook_ops *reg,
unsigned int hookcount)
{
- struct nf_hook_entry *to_free[16];
- unsigned int i, n, nfq;
-
- do {
- n = min_t(unsigned int, hookcount, ARRAY_SIZE(to_free));
-
- for (i = 0; i < n; i++)
- to_free[i] = __nf_unregister_net_hook(net, ®[i]);
-
- synchronize_net();
-
- /* need 2nd synchronize_net() if nfqueue is used, skb
- * can get reinjected right before nf_queue_hook_drop()
- */
- nfq = nf_queue_nf_hook_drop(net);
- if (nfq)
- synchronize_net();
-
- for (i = 0; i < n; i++)
- kfree(to_free[i]);
+ unsigned int i;
- reg += n;
- hookcount -= n;
- } while (hookcount > 0);
+ for (i = 0; i < hookcount; i++)
+ nf_unregister_net_hook(net, ®[i]);
}
EXPORT_SYMBOL(nf_unregister_net_hooks);
/* Returns 1 if okfn() needs to be executed by the caller,
* -EPERM for NF_DROP, 0 otherwise. Caller must hold rcu_read_lock. */
int nf_hook_slow(struct sk_buff *skb, struct nf_hook_state *state,
- struct nf_hook_entry *entry)
+ const struct nf_hook_entries *e, unsigned int s)
{
unsigned int verdict;
int ret;
- do {
- verdict = nf_hook_entry_hookfn(entry, skb, state);
+ for (; s < e->num_hook_entries; s++) {
+ verdict = nf_hook_entry_hookfn(&e->hooks[s], skb, state);
switch (verdict & NF_VERDICT_MASK) {
case NF_ACCEPT:
- entry = rcu_dereference(entry->next);
break;
case NF_DROP:
kfree_skb(skb);
@@ -248,8 +399,8 @@ int nf_hook_slow(struct sk_buff *skb, struct nf_hook_state *state,
ret = -EPERM;
return ret;
case NF_QUEUE:
- ret = nf_queue(skb, state, &entry, verdict);
- if (ret == 1 && entry)
+ ret = nf_queue(skb, state, e, s, verdict);
+ if (ret == 1)
continue;
return ret;
default:
@@ -258,7 +409,7 @@ int nf_hook_slow(struct sk_buff *skb, struct nf_hook_state *state,
*/
return 0;
}
- } while (entry);
+ }
return 1;
}
diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
index 19f00a47a710..bacd6363946e 100644
--- a/net/netfilter/nf_internals.h
+++ b/net/netfilter/nf_internals.h
@@ -13,7 +13,8 @@
/* nf_queue.c */
int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
- struct nf_hook_entry **entryp, unsigned int verdict);
+ const struct nf_hook_entries *entries, unsigned int index,
+ unsigned int verdict);
unsigned int nf_queue_nf_hook_drop(struct net *net);
/* nf_log.c */
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index 4f4d80a58fb5..f7e21953b1de 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -112,7 +112,8 @@ unsigned int nf_queue_nf_hook_drop(struct net *net)
EXPORT_SYMBOL_GPL(nf_queue_nf_hook_drop);
static int __nf_queue(struct sk_buff *skb, const struct nf_hook_state *state,
- struct nf_hook_entry *hook_entry, unsigned int queuenum)
+ const struct nf_hook_entries *entries,
+ unsigned int index, unsigned int queuenum)
{
int status = -ENOENT;
struct nf_queue_entry *entry = NULL;
@@ -140,7 +141,7 @@ static int __nf_queue(struct sk_buff *skb, const struct nf_hook_state *state,
*entry = (struct nf_queue_entry) {
.skb = skb,
.state = *state,
- .hook = hook_entry,
+ .hook_index = index,
.size = sizeof(*entry) + afinfo->route_key_size,
};
@@ -163,18 +164,16 @@ static int __nf_queue(struct sk_buff *skb, const struct nf_hook_state *state,
/* Packets leaving via this function must come back through nf_reinject(). */
int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
- struct nf_hook_entry **entryp, unsigned int verdict)
+ const struct nf_hook_entries *entries, unsigned int index,
+ unsigned int verdict)
{
- struct nf_hook_entry *entry = *entryp;
int ret;
- ret = __nf_queue(skb, state, entry, verdict >> NF_VERDICT_QBITS);
+ ret = __nf_queue(skb, state, entries, index, verdict >> NF_VERDICT_QBITS);
if (ret < 0) {
if (ret == -ESRCH &&
- (verdict & NF_VERDICT_FLAG_QUEUE_BYPASS)) {
- *entryp = rcu_dereference(entry->next);
+ (verdict & NF_VERDICT_FLAG_QUEUE_BYPASS))
return 1;
- }
kfree_skb(skb);
}
@@ -183,33 +182,56 @@ int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
static unsigned int nf_iterate(struct sk_buff *skb,
struct nf_hook_state *state,
- struct nf_hook_entry **entryp)
+ const struct nf_hook_entries *hooks,
+ unsigned int *index)
{
- unsigned int verdict;
+ const struct nf_hook_entry *hook;
+ unsigned int verdict, i = *index;
- do {
+ while (i < hooks->num_hook_entries) {
+ hook = &hooks->hooks[i];
repeat:
- verdict = nf_hook_entry_hookfn((*entryp), skb, state);
+ verdict = nf_hook_entry_hookfn(hook, skb, state);
if (verdict != NF_ACCEPT) {
if (verdict != NF_REPEAT)
return verdict;
goto repeat;
}
- *entryp = rcu_dereference((*entryp)->next);
- } while (*entryp);
+ i++;
+ }
+ *index = i;
return NF_ACCEPT;
}
+/* Caller must hold rcu read-side lock */
void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
{
- struct nf_hook_entry *hook_entry = entry->hook;
+ const struct nf_hook_entry *hook_entry;
+ const struct nf_hook_entries *hooks;
struct sk_buff *skb = entry->skb;
const struct nf_afinfo *afinfo;
+ const struct net *net;
+ unsigned int i;
int err;
+ u8 pf;
+
+ net = entry->state.net;
+ pf = entry->state.pf;
+
+ hooks = rcu_dereference(net->nf.hooks[pf][entry->state.hook]);
nf_queue_entry_release_refs(entry);
+ i = entry->hook_index;
+ if (WARN_ON_ONCE(i >= hooks->num_hook_entries)) {
+ kfree_skb(skb);
+ kfree(entry);
+ return;
+ }
+
+ hook_entry = &hooks->hooks[i];
+
/* Continue traversal iff userspace said ok... */
if (verdict == NF_REPEAT)
verdict = nf_hook_entry_hookfn(hook_entry, skb, &entry->state);
@@ -221,27 +243,22 @@ void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
}
if (verdict == NF_ACCEPT) {
- hook_entry = rcu_dereference(hook_entry->next);
- if (hook_entry)
next_hook:
- verdict = nf_iterate(skb, &entry->state, &hook_entry);
+ ++i;
+ verdict = nf_iterate(skb, &entry->state, hooks, &i);
}
switch (verdict & NF_VERDICT_MASK) {
case NF_ACCEPT:
case NF_STOP:
-okfn:
local_bh_disable();
entry->state.okfn(entry->state.net, entry->state.sk, skb);
local_bh_enable();
break;
case NF_QUEUE:
- err = nf_queue(skb, &entry->state, &hook_entry, verdict);
- if (err == 1) {
- if (hook_entry)
- goto next_hook;
- goto okfn;
- }
+ err = nf_queue(skb, &entry->state, hooks, i, verdict);
+ if (err == 1)
+ goto next_hook;
break;
case NF_STOLEN:
break;
--
2.1.4
^ permalink raw reply related
* [PATCH 43/47] netfilter: core: batch nf_unregister_net_hooks synchronize_net calls
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
re-add batching in nf_unregister_net_hooks().
Similar as before, just store an array with to-be-free'd rule arrays
on stack, then call synchronize_net once per batch.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/core.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 56 insertions(+), 3 deletions(-)
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 164ad20d0bd2..04fe25abc5f6 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -395,10 +395,63 @@ EXPORT_SYMBOL(nf_register_net_hooks);
void nf_unregister_net_hooks(struct net *net, const struct nf_hook_ops *reg,
unsigned int hookcount)
{
- unsigned int i;
+ struct nf_hook_entries *to_free[16], *p;
+ struct nf_hook_entries __rcu **pp;
+ unsigned int i, j, n;
+
+ mutex_lock(&nf_hook_mutex);
+ for (i = 0; i < hookcount; i++) {
+ pp = nf_hook_entry_head(net, ®[i]);
+ if (!pp)
+ continue;
+
+ p = nf_entry_dereference(*pp);
+ if (WARN_ON_ONCE(!p))
+ continue;
+ __nf_unregister_net_hook(p, ®[i]);
+ }
+ mutex_unlock(&nf_hook_mutex);
+
+ do {
+ n = min_t(unsigned int, hookcount, ARRAY_SIZE(to_free));
+
+ mutex_lock(&nf_hook_mutex);
+
+ for (i = 0, j = 0; i < hookcount && j < n; i++) {
+ pp = nf_hook_entry_head(net, ®[i]);
+ if (!pp)
+ continue;
+
+ p = nf_entry_dereference(*pp);
+ if (!p)
+ continue;
+
+ to_free[j] = __nf_hook_entries_try_shrink(pp);
+ if (to_free[j])
+ ++j;
+ }
+
+ mutex_unlock(&nf_hook_mutex);
+
+ if (j) {
+ unsigned int nfq;
+
+ synchronize_net();
+
+ /* need 2nd synchronize_net() if nfqueue is used, skb
+ * can get reinjected right before nf_queue_hook_drop()
+ */
+ nfq = nf_queue_nf_hook_drop(net);
+ if (nfq)
+ synchronize_net();
+
+ for (i = 0; i < j; i++)
+ kvfree(to_free[i]);
+ }
- for (i = 0; i < hookcount; i++)
- nf_unregister_net_hook(net, ®[i]);
+ reg += n;
+ hookcount -= n;
+ } while (hookcount > 0);
}
EXPORT_SYMBOL(nf_unregister_net_hooks);
--
2.1.4
^ permalink raw reply related
* [PATCH 45/47] netfilter: Remove NFDEBUG()
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Varsha Rao <rvarsha016@gmail.com>
Remove NFDEBUG and use pr_debug() instead of it.
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_internals.h | 6 ------
net/netfilter/nf_sockopt.c | 2 +-
2 files changed, 1 insertion(+), 7 deletions(-)
diff --git a/net/netfilter/nf_internals.h b/net/netfilter/nf_internals.h
index bacd6363946e..49f87ec093a3 100644
--- a/net/netfilter/nf_internals.h
+++ b/net/netfilter/nf_internals.h
@@ -5,12 +5,6 @@
#include <linux/skbuff.h>
#include <linux/netdevice.h>
-#ifdef CONFIG_NETFILTER_DEBUG
-#define NFDEBUG(format, args...) printk(KERN_DEBUG format , ## args)
-#else
-#define NFDEBUG(format, args...)
-#endif
-
/* nf_queue.c */
int nf_queue(struct sk_buff *skb, struct nf_hook_state *state,
const struct nf_hook_entries *entries, unsigned int index,
diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
index c68c1e58b362..d2a9e6b5d01f 100644
--- a/net/netfilter/nf_sockopt.c
+++ b/net/netfilter/nf_sockopt.c
@@ -33,7 +33,7 @@ int nf_register_sockopt(struct nf_sockopt_ops *reg)
reg->set_optmin, reg->set_optmax)
|| overlap(ops->get_optmin, ops->get_optmax,
reg->get_optmin, reg->get_optmax))) {
- NFDEBUG("nf_sock overlap: %u-%u/%u-%u v %u-%u/%u-%u\n",
+ pr_debug("nf_sock overlap: %u-%u/%u-%u v %u-%u/%u-%u\n",
ops->set_optmin, ops->set_optmax,
ops->get_optmin, ops->get_optmax,
reg->set_optmin, reg->set_optmax,
--
2.1.4
^ permalink raw reply related
* [PATCH 39/47] netfilter: ebtables: fix indent on if statements
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Colin Ian King <colin.king@canonical.com>
The returns on some if statements are not indented correctly,
add in the missing tab.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/bridge/netfilter/ebt_ip.c | 4 ++--
net/bridge/netfilter/ebt_ip6.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/bridge/netfilter/ebt_ip.c b/net/bridge/netfilter/ebt_ip.c
index d06968bdf5ec..2b46c50abce0 100644
--- a/net/bridge/netfilter/ebt_ip.c
+++ b/net/bridge/netfilter/ebt_ip.c
@@ -64,14 +64,14 @@ ebt_ip_mt(const struct sk_buff *skb, struct xt_action_param *par)
if (NF_INVF(info, EBT_IP_DPORT,
dst < info->dport[0] ||
dst > info->dport[1]))
- return false;
+ return false;
}
if (info->bitmask & EBT_IP_SPORT) {
u32 src = ntohs(pptr->src);
if (NF_INVF(info, EBT_IP_SPORT,
src < info->sport[0] ||
src > info->sport[1]))
- return false;
+ return false;
}
}
return true;
diff --git a/net/bridge/netfilter/ebt_ip6.c b/net/bridge/netfilter/ebt_ip6.c
index 4617491be41e..2a5a52a53ec4 100644
--- a/net/bridge/netfilter/ebt_ip6.c
+++ b/net/bridge/netfilter/ebt_ip6.c
@@ -89,7 +89,7 @@ ebt_ip6_mt(const struct sk_buff *skb, struct xt_action_param *par)
if (NF_INVF(info, EBT_IP6_SPORT,
src < info->sport[0] ||
src > info->sport[1]))
- return false;
+ return false;
}
if ((info->bitmask & EBT_IP6_ICMP6) &&
NF_INVF(info, EBT_IP6_ICMP6,
--
2.1.4
^ permalink raw reply related
* [PATCH 42/47] netfilter: debug: check for sorted array
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
Make sure our grow/shrink routine places them in the correct order.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/core.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index 1a9e23c9ab98..164ad20d0bd2 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -157,6 +157,27 @@ nf_hook_entries_grow(const struct nf_hook_entries *old,
return new;
}
+static void hooks_validate(const struct nf_hook_entries *hooks)
+{
+#ifdef CONFIG_DEBUG_KERNEL
+ struct nf_hook_ops **orig_ops;
+ int prio = INT_MIN;
+ size_t i = 0;
+
+ orig_ops = nf_hook_entries_get_hook_ops(hooks);
+
+ for (i = 0; i < hooks->num_hook_entries; i++) {
+ if (orig_ops[i] == &dummy_ops)
+ continue;
+
+ WARN_ON(orig_ops[i]->priority < prio);
+
+ if (orig_ops[i]->priority > prio)
+ prio = orig_ops[i]->priority;
+ }
+#endif
+}
+
/*
* __nf_hook_entries_try_shrink - try to shrink hook array
*
@@ -210,6 +231,7 @@ static void *__nf_hook_entries_try_shrink(struct nf_hook_entries __rcu **pp)
new_ops[j] = (void *)orig_ops[i];
j++;
}
+ hooks_validate(new);
out_assign:
rcu_assign_pointer(*pp, new);
return old;
@@ -261,6 +283,7 @@ int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg)
if (IS_ERR(new_hooks))
return PTR_ERR(new_hooks);
+ hooks_validate(new_hooks);
#ifdef CONFIG_NETFILTER_INGRESS
if (reg->pf == NFPROTO_NETDEV && reg->hooknum == NF_NETDEV_INGRESS)
net_inc_ingress_queue();
--
2.1.4
^ permalink raw reply related
* [PATCH 44/47] netfilter: conntrack: don't log "invalid" icmpv6 connections
From: Pablo Neira Ayuso @ 2017-09-03 22:42 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478574-13281-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
When enabling logging for invalid connections we currently also log most
icmpv6 types, which we don't track intentionally (e.g. neigh discovery).
"invalid" should really mean "invalid", i.e. short header or bad checksum.
We don't do any logging for icmp(v4) either, its just useless noise.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
index 808f63e2e1ff..43544b975eae 100644
--- a/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
+++ b/net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
@@ -121,11 +121,6 @@ static bool icmpv6_new(struct nf_conn *ct, const struct sk_buff *skb,
pr_debug("icmpv6: can't create new conn with type %u\n",
type + 128);
nf_ct_dump_tuple_ipv6(&ct->tuplehash[0].tuple);
- if (LOG_INVALID(nf_ct_net(ct), IPPROTO_ICMPV6))
- nf_log_packet(nf_ct_net(ct), PF_INET6, 0, skb, NULL,
- NULL, NULL,
- "nf_ct_icmpv6: invalid new with type %d ",
- type + 128);
return false;
}
return true;
--
2.1.4
^ permalink raw reply related
* [PATCH 46/47] netfilter: conntrack: remove unused code in nf_conntrack_proto_generic.c
From: Pablo Neira Ayuso @ 2017-09-03 22:43 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
From: Davide Caratti <dcaratti@redhat.com>
L4 protocol helpers for DCCP, SCTP and UDPlite can't be built as kernel
modules anymore, so we can remove code enclosed in
#ifdef CONFIG_NF_CT_PROTO_{DCCP,SCTP,UDPLITE}_MODULE
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nf_conntrack_proto_generic.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c
index 2bc3d0c1a5bf..2993995b690d 100644
--- a/net/netfilter/nf_conntrack_proto_generic.c
+++ b/net/netfilter/nf_conntrack_proto_generic.c
@@ -17,22 +17,10 @@ static unsigned int nf_ct_generic_timeout __read_mostly = 600*HZ;
static bool nf_generic_should_process(u8 proto)
{
switch (proto) {
-#ifdef CONFIG_NF_CT_PROTO_SCTP_MODULE
- case IPPROTO_SCTP:
- return false;
-#endif
-#ifdef CONFIG_NF_CT_PROTO_DCCP_MODULE
- case IPPROTO_DCCP:
- return false;
-#endif
#ifdef CONFIG_NF_CT_PROTO_GRE_MODULE
case IPPROTO_GRE:
return false;
#endif
-#ifdef CONFIG_NF_CT_PROTO_UDPLITE_MODULE
- case IPPROTO_UDPLITE:
- return false;
-#endif
default:
return true;
}
--
2.1.4
^ permalink raw reply related
* [PATCH 47/47] netfilter: rt: account for tcp header size too
From: Pablo Neira Ayuso @ 2017-09-03 22:43 UTC (permalink / raw)
To: netfilter-devel; +Cc: davem, netdev
In-Reply-To: <1504478625-13330-1-git-send-email-pablo@netfilter.org>
From: Florian Westphal <fw@strlen.de>
This needs to accout for the ipv4/ipv6 header size and the tcp
header without options.
Fixes: 6b5dc98e8fac0 ("netfilter: rt: add support to fetch path mss")
Reported-by: Matteo Croce <technoboy85@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
net/netfilter/nft_rt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/netfilter/nft_rt.c b/net/netfilter/nft_rt.c
index 61fd3acaa3c9..a6b7d05aeacf 100644
--- a/net/netfilter/nft_rt.c
+++ b/net/netfilter/nft_rt.c
@@ -35,10 +35,11 @@ static u16 get_tcpmss(const struct nft_pktinfo *pkt, const struct dst_entry *skb
switch (nft_pf(pkt)) {
case NFPROTO_IPV4:
fl.u.ip4.daddr = ip_hdr(skb)->saddr;
- minlen = sizeof(struct iphdr);
+ minlen = sizeof(struct iphdr) + sizeof(struct tcphdr);
break;
case NFPROTO_IPV6:
fl.u.ip6.daddr = ipv6_hdr(skb)->saddr;
+ minlen = sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
break;
}
--
2.1.4
^ permalink raw reply related
* Re: [PATCH 00/47] Netfilter updates for net-next
From: David Miller @ 2017-09-04 0:09 UTC (permalink / raw)
To: pablo; +Cc: netfilter-devel, netdev
In-Reply-To: <1504477589-12045-1-git-send-email-pablo@netfilter.org>
From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Mon, 4 Sep 2017 00:25:42 +0200
> The following patchset contains Netfilter updates for your net-next
> tree. Basically, updates to the conntrack core, enhancements for
> nf_tables, conversion of netfilter hooks from linked list to array to
> improve memory locality and asorted improvements for the Netfilter
> codebase. More specifically, they are:
...
> I think I will have material for a second Netfilter batch in my queue if
> time allow to make it fit in this merge window.
Ok, but please be swift about it.
> You can pull these changes from:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git
Pulled, thanks.
^ permalink raw reply
* Re: [PATCH nf-next 3/5] netlink: add NLM_F_NONREC flag for deletion requests
From: David Miller @ 2017-09-04 0:14 UTC (permalink / raw)
To: pablo; +Cc: netfilter-devel, netdev
In-Reply-To: <1504475761-11454-1-git-send-email-pablo@netfilter.org>
I only see patches 3, 4, and 5 of this series.
If this is meant for net-next inclusion, you'll have to submit it such that
I see the entire series on netdev and thus in patchwork.
Thanks.
^ permalink raw reply
page: next (older) | prev (newer) | latest
- recent:[subjects (threaded)|topics (new)|topics (active)]
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox