Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree,
they are:
1) Missing check for full sock in ip_route_me_harder(), from
Florian Westphal.
2) Incorrect sip helper structure initilization that breaks it when
several ports are used, from Christophe Leroy.
3) Fix incorrect assumption when looking up for matching with adjacent
intervals in the nft_set_rbtree.
4) Fix broken netlink event error reporting in nf_tables that results
in misleading ESRCH errors propagated to userspace listeners.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index ac84686..2aa8a9d 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -988,9 +988,9 @@
const struct nlattr *nla, u32 objtype,
u8 genmask);
-int nft_obj_notify(struct net *net, struct nft_table *table,
- struct nft_object *obj, u32 portid, u32 seq,
- int event, int family, int report, gfp_t gfp);
+void nft_obj_notify(struct net *net, struct nft_table *table,
+ struct nft_object *obj, u32 portid, u32 seq,
+ int event, int family, int report, gfp_t gfp);
/**
* struct nft_object_type - stateful object type
diff --git a/net/ipv4/netfilter.c b/net/ipv4/netfilter.c
index b3cc133..c0cc6aa 100644
--- a/net/ipv4/netfilter.c
+++ b/net/ipv4/netfilter.c
@@ -23,7 +23,8 @@
struct rtable *rt;
struct flowi4 fl4 = {};
__be32 saddr = iph->saddr;
- __u8 flags = skb->sk ? inet_sk_flowi_flags(skb->sk) : 0;
+ const struct sock *sk = skb_to_full_sk(skb);
+ __u8 flags = sk ? inet_sk_flowi_flags(sk) : 0;
struct net_device *dev = skb_dst(skb)->dev;
unsigned int hh_len;
@@ -40,7 +41,7 @@
fl4.daddr = iph->daddr;
fl4.saddr = saddr;
fl4.flowi4_tos = RT_TOS(iph->tos);
- fl4.flowi4_oif = skb->sk ? skb->sk->sk_bound_dev_if : 0;
+ fl4.flowi4_oif = sk ? sk->sk_bound_dev_if : 0;
if (!fl4.flowi4_oif)
fl4.flowi4_oif = l3mdev_master_ifindex(dev);
fl4.flowi4_mark = skb->mark;
@@ -61,7 +62,7 @@
xfrm_decode_session(skb, flowi4_to_flowi(&fl4), AF_INET) == 0) {
struct dst_entry *dst = skb_dst(skb);
skb_dst_set(skb, NULL);
- dst = xfrm_lookup(net, dst, flowi4_to_flowi(&fl4), skb->sk, 0);
+ dst = xfrm_lookup(net, dst, flowi4_to_flowi(&fl4), sk, 0);
if (IS_ERR(dst))
return PTR_ERR(dst);
skb_dst_set(skb, dst);
diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c
index 24174c52..0d17894 100644
--- a/net/netfilter/nf_conntrack_sip.c
+++ b/net/netfilter/nf_conntrack_sip.c
@@ -1628,8 +1628,6 @@
ports[ports_c++] = SIP_PORT;
for (i = 0; i < ports_c; i++) {
- memset(&sip[i], 0, sizeof(sip[i]));
-
nf_ct_helper_init(&sip[4 * i], AF_INET, IPPROTO_UDP, "sip",
SIP_PORT, ports[i], i, sip_exp_policy,
SIP_EXPECT_MAX,
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index ff7304a..5e0ccfd 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -461,16 +461,15 @@
return -1;
}
-static int nf_tables_table_notify(const struct nft_ctx *ctx, int event)
+static void nf_tables_table_notify(const struct nft_ctx *ctx, int event)
{
struct sk_buff *skb;
int err;
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
goto err;
@@ -482,14 +481,11 @@
goto err;
}
- err = nfnetlink_send(skb, ctx->net, ctx->portid, NFNLGRP_NFTABLES,
- ctx->report, GFP_KERNEL);
+ nfnetlink_send(skb, ctx->net, ctx->portid, NFNLGRP_NFTABLES,
+ ctx->report, GFP_KERNEL);
+ return;
err:
- if (err < 0) {
- nfnetlink_set_err(ctx->net, ctx->portid, NFNLGRP_NFTABLES,
- err);
- }
- return err;
+ nfnetlink_set_err(ctx->net, ctx->portid, NFNLGRP_NFTABLES, -ENOBUFS);
}
static int nf_tables_dump_tables(struct sk_buff *skb,
@@ -1050,16 +1046,15 @@
return -1;
}
-static int nf_tables_chain_notify(const struct nft_ctx *ctx, int event)
+static void nf_tables_chain_notify(const struct nft_ctx *ctx, int event)
{
struct sk_buff *skb;
int err;
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
goto err;
@@ -1072,14 +1067,11 @@
goto err;
}
- err = nfnetlink_send(skb, ctx->net, ctx->portid, NFNLGRP_NFTABLES,
- ctx->report, GFP_KERNEL);
+ nfnetlink_send(skb, ctx->net, ctx->portid, NFNLGRP_NFTABLES,
+ ctx->report, GFP_KERNEL);
+ return;
err:
- if (err < 0) {
- nfnetlink_set_err(ctx->net, ctx->portid, NFNLGRP_NFTABLES,
- err);
- }
- return err;
+ nfnetlink_set_err(ctx->net, ctx->portid, NFNLGRP_NFTABLES, -ENOBUFS);
}
static int nf_tables_dump_chains(struct sk_buff *skb,
@@ -1934,18 +1926,16 @@
return -1;
}
-static int nf_tables_rule_notify(const struct nft_ctx *ctx,
- const struct nft_rule *rule,
- int event)
+static void nf_tables_rule_notify(const struct nft_ctx *ctx,
+ const struct nft_rule *rule, int event)
{
struct sk_buff *skb;
int err;
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
goto err;
@@ -1958,14 +1948,11 @@
goto err;
}
- err = nfnetlink_send(skb, ctx->net, ctx->portid, NFNLGRP_NFTABLES,
- ctx->report, GFP_KERNEL);
+ nfnetlink_send(skb, ctx->net, ctx->portid, NFNLGRP_NFTABLES,
+ ctx->report, GFP_KERNEL);
+ return;
err:
- if (err < 0) {
- nfnetlink_set_err(ctx->net, ctx->portid, NFNLGRP_NFTABLES,
- err);
- }
- return err;
+ nfnetlink_set_err(ctx->net, ctx->portid, NFNLGRP_NFTABLES, -ENOBUFS);
}
struct nft_rule_dump_ctx {
@@ -2696,9 +2683,9 @@
return -1;
}
-static int nf_tables_set_notify(const struct nft_ctx *ctx,
- const struct nft_set *set,
- int event, gfp_t gfp_flags)
+static void nf_tables_set_notify(const struct nft_ctx *ctx,
+ const struct nft_set *set, int event,
+ gfp_t gfp_flags)
{
struct sk_buff *skb;
u32 portid = ctx->portid;
@@ -2706,9 +2693,8 @@
if (!ctx->report &&
!nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, gfp_flags);
if (skb == NULL)
goto err;
@@ -2719,12 +2705,11 @@
goto err;
}
- err = nfnetlink_send(skb, ctx->net, portid, NFNLGRP_NFTABLES,
- ctx->report, gfp_flags);
+ nfnetlink_send(skb, ctx->net, portid, NFNLGRP_NFTABLES, ctx->report,
+ gfp_flags);
+ return;
err:
- if (err < 0)
- nfnetlink_set_err(ctx->net, portid, NFNLGRP_NFTABLES, err);
- return err;
+ nfnetlink_set_err(ctx->net, portid, NFNLGRP_NFTABLES, -ENOBUFS);
}
static int nf_tables_dump_sets(struct sk_buff *skb, struct netlink_callback *cb)
@@ -3504,10 +3489,10 @@
return -1;
}
-static int nf_tables_setelem_notify(const struct nft_ctx *ctx,
- const struct nft_set *set,
- const struct nft_set_elem *elem,
- int event, u16 flags)
+static void nf_tables_setelem_notify(const struct nft_ctx *ctx,
+ const struct nft_set *set,
+ const struct nft_set_elem *elem,
+ int event, u16 flags)
{
struct net *net = ctx->net;
u32 portid = ctx->portid;
@@ -3515,9 +3500,8 @@
int err;
if (!ctx->report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb == NULL)
goto err;
@@ -3529,12 +3513,11 @@
goto err;
}
- err = nfnetlink_send(skb, net, portid, NFNLGRP_NFTABLES, ctx->report,
- GFP_KERNEL);
+ nfnetlink_send(skb, net, portid, NFNLGRP_NFTABLES, ctx->report,
+ GFP_KERNEL);
+ return;
err:
- if (err < 0)
- nfnetlink_set_err(net, portid, NFNLGRP_NFTABLES, err);
- return err;
+ nfnetlink_set_err(net, portid, NFNLGRP_NFTABLES, -ENOBUFS);
}
static struct nft_trans *nft_trans_elem_alloc(struct nft_ctx *ctx,
@@ -4476,18 +4459,17 @@
return nft_delobj(&ctx, obj);
}
-int nft_obj_notify(struct net *net, struct nft_table *table,
- struct nft_object *obj, u32 portid, u32 seq, int event,
- int family, int report, gfp_t gfp)
+void nft_obj_notify(struct net *net, struct nft_table *table,
+ struct nft_object *obj, u32 portid, u32 seq, int event,
+ int family, int report, gfp_t gfp)
{
struct sk_buff *skb;
int err;
if (!report &&
!nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb = nlmsg_new(NLMSG_GOODSIZE, gfp);
if (skb == NULL)
goto err;
@@ -4499,21 +4481,18 @@
goto err;
}
- err = nfnetlink_send(skb, net, portid, NFNLGRP_NFTABLES, report, gfp);
+ nfnetlink_send(skb, net, portid, NFNLGRP_NFTABLES, report, gfp);
+ return;
err:
- if (err < 0) {
- nfnetlink_set_err(net, portid, NFNLGRP_NFTABLES, err);
- }
- return err;
+ nfnetlink_set_err(net, portid, NFNLGRP_NFTABLES, -ENOBUFS);
}
EXPORT_SYMBOL_GPL(nft_obj_notify);
-static int nf_tables_obj_notify(const struct nft_ctx *ctx,
- struct nft_object *obj, int event)
+static void nf_tables_obj_notify(const struct nft_ctx *ctx,
+ struct nft_object *obj, int event)
{
- return nft_obj_notify(ctx->net, ctx->table, obj, ctx->portid,
- ctx->seq, event, ctx->afi->family, ctx->report,
- GFP_KERNEL);
+ nft_obj_notify(ctx->net, ctx->table, obj, ctx->portid, ctx->seq, event,
+ ctx->afi->family, ctx->report, GFP_KERNEL);
}
static int nf_tables_fill_gen_info(struct sk_buff *skb, struct net *net,
@@ -4543,7 +4522,8 @@
return -EMSGSIZE;
}
-static int nf_tables_gen_notify(struct net *net, struct sk_buff *skb, int event)
+static void nf_tables_gen_notify(struct net *net, struct sk_buff *skb,
+ int event)
{
struct nlmsghdr *nlh = nlmsg_hdr(skb);
struct sk_buff *skb2;
@@ -4551,9 +4531,8 @@
if (nlmsg_report(nlh) &&
!nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
- return 0;
+ return;
- err = -ENOBUFS;
skb2 = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
if (skb2 == NULL)
goto err;
@@ -4565,14 +4544,12 @@
goto err;
}
- err = nfnetlink_send(skb2, net, NETLINK_CB(skb).portid,
- NFNLGRP_NFTABLES, nlmsg_report(nlh), GFP_KERNEL);
+ nfnetlink_send(skb2, net, NETLINK_CB(skb).portid, NFNLGRP_NFTABLES,
+ nlmsg_report(nlh), GFP_KERNEL);
+ return;
err:
- if (err < 0) {
- nfnetlink_set_err(net, NETLINK_CB(skb).portid, NFNLGRP_NFTABLES,
- err);
- }
- return err;
+ nfnetlink_set_err(net, NETLINK_CB(skb).portid, NFNLGRP_NFTABLES,
+ -ENOBUFS);
}
static int nf_tables_getgen(struct net *net, struct sock *nlsk,
diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c
index 71e8fb8..78dfbf9 100644
--- a/net/netfilter/nft_set_rbtree.c
+++ b/net/netfilter/nft_set_rbtree.c
@@ -60,11 +60,10 @@
d = memcmp(this, key, set->klen);
if (d < 0) {
parent = parent->rb_left;
- /* In case of adjacent ranges, we always see the high
- * part of the range in first place, before the low one.
- * So don't update interval if the keys are equal.
- */
- if (interval && nft_rbtree_equal(set, this, interval))
+ if (interval &&
+ nft_rbtree_equal(set, this, interval) &&
+ nft_rbtree_interval_end(this) &&
+ !nft_rbtree_interval_end(interval))
continue;
interval = rbe;
} else if (d > 0)
