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authorDavid S. Miller <davem@davemloft.net>2019-10-02 13:23:13 -0700
committerDavid S. Miller <davem@davemloft.net>2019-10-02 13:23:13 -0700
commit4fbb97bac1be4fb5a4b8030e2b247b81504fe694 (patch)
tree9e99af325a5daf37bb2e28d1f5eff9a61cd96872
parentdb34a4714c013b644eec2de0ec81b1f0373b8b93 (diff)
parent34a4c95abd25ab41fb390b985a08a651b1fa0b0f (diff)
downloadlinux-stericsson-4fbb97bac1be4fb5a4b8030e2b247b81504fe694.tar.gz
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 net: 1) Remove the skb_ext_del from nf_reset, and renames it to a more fitting nf_reset_ct(). Patch from Florian Westphal. 2) Fix deadlock in nft_connlimit between packet path updates and the garbage collector. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ppp/pptp.c4
-rw-r--r--drivers/net/tun.c2
-rw-r--r--drivers/net/virtio_net.c2
-rw-r--r--drivers/net/vrf.c8
-rw-r--r--drivers/net/wireless/mac80211_hwsim.c4
-rw-r--r--drivers/staging/octeon/ethernet-tx.c6
-rw-r--r--include/linux/skbuff.h5
-rw-r--r--net/batman-adv/soft-interface.c2
-rw-r--r--net/core/skbuff.c2
-rw-r--r--net/dccp/ipv4.c2
-rw-r--r--net/ipv4/ip_input.c2
-rw-r--r--net/ipv4/ipmr.c4
-rw-r--r--net/ipv4/netfilter/nf_dup_ipv4.c2
-rw-r--r--net/ipv4/raw.c2
-rw-r--r--net/ipv4/tcp_ipv4.c2
-rw-r--r--net/ipv4/udp.c4
-rw-r--r--net/ipv6/ip6_input.c2
-rw-r--r--net/ipv6/netfilter/nf_dup_ipv6.c2
-rw-r--r--net/ipv6/raw.c2
-rw-r--r--net/l2tp/l2tp_core.c2
-rw-r--r--net/l2tp/l2tp_eth.c2
-rw-r--r--net/l2tp/l2tp_ip.c2
-rw-r--r--net/l2tp/l2tp_ip6.c2
-rw-r--r--net/netfilter/ipvs/ip_vs_xmit.c2
-rw-r--r--net/netfilter/nft_connlimit.c7
-rw-r--r--net/openvswitch/vport-internal_dev.c2
-rw-r--r--net/packet/af_packet.c4
-rw-r--r--net/sctp/input.c2
-rw-r--r--net/xfrm/xfrm_input.c2
-rw-r--r--net/xfrm/xfrm_interface.c2
-rw-r--r--net/xfrm/xfrm_output.c2
-rw-r--r--net/xfrm/xfrm_policy.c2
32 files changed, 46 insertions, 46 deletions
diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 734de7de03f7..e1fabb3e3246 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -238,7 +238,7 @@ static int pptp_xmit(struct ppp_channel *chan, struct sk_buff *skb)
skb_dst_drop(skb);
skb_dst_set(skb, &rt->dst);
- nf_reset(skb);
+ nf_reset_ct(skb);
skb->ip_summed = CHECKSUM_NONE;
ip_select_ident(net, skb, NULL);
@@ -358,7 +358,7 @@ static int pptp_rcv(struct sk_buff *skb)
po = lookup_chan(htons(header->call_id), iph->saddr);
if (po) {
skb_dst_drop(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
return sk_receive_skb(sk_pppox(po), skb, 0);
}
drop:
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index aab0be40d443..812dc3a65efb 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1104,7 +1104,7 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
*/
skb_orphan(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
if (ptr_ring_produce(&tfile->tx_ring, skb))
goto drop;
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index ba98e0971b84..5a635f028bdc 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1585,7 +1585,7 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Don't wait up for transmitted skbs to be freed. */
if (!use_napi) {
skb_orphan(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
}
/* If running out of space, stop queue to avoid getting packets that we
diff --git a/drivers/net/vrf.c b/drivers/net/vrf.c
index a4b38a980c3c..ee52bde058df 100644
--- a/drivers/net/vrf.c
+++ b/drivers/net/vrf.c
@@ -366,7 +366,7 @@ static int vrf_finish_output6(struct net *net, struct sock *sk,
struct neighbour *neigh;
int ret;
- nf_reset(skb);
+ nf_reset_ct(skb);
skb->protocol = htons(ETH_P_IPV6);
skb->dev = dev;
@@ -459,7 +459,7 @@ static struct sk_buff *vrf_ip6_out_direct(struct net_device *vrf_dev,
/* reset skb device */
if (likely(err == 1))
- nf_reset(skb);
+ nf_reset_ct(skb);
else
skb = NULL;
@@ -560,7 +560,7 @@ static int vrf_finish_output(struct net *net, struct sock *sk, struct sk_buff *s
bool is_v6gw = false;
int ret = -EINVAL;
- nf_reset(skb);
+ nf_reset_ct(skb);
/* Be paranoid, rather than too clever. */
if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) {
@@ -670,7 +670,7 @@ static struct sk_buff *vrf_ip_out_direct(struct net_device *vrf_dev,
/* reset skb device */
if (likely(err == 1))
- nf_reset(skb);
+ nf_reset_ct(skb);
else
skb = NULL;
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 635956024e88..45c73a6f09a1 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1261,8 +1261,8 @@ static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
skb_orphan(skb);
skb_dst_drop(skb);
skb->mark = 0;
- secpath_reset(skb);
- nf_reset(skb);
+ skb_ext_reset(skb);
+ nf_reset_ct(skb);
/*
* Get absolute mactime here so all HWs RX at the "same time", and
diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c
index c64728fc21f2..a62057555d1b 100644
--- a/drivers/staging/octeon/ethernet-tx.c
+++ b/drivers/staging/octeon/ethernet-tx.c
@@ -349,10 +349,8 @@ int cvm_oct_xmit(struct sk_buff *skb, struct net_device *dev)
*/
dst_release(skb_dst(skb));
skb_dst_set(skb, NULL);
-#ifdef CONFIG_XFRM
- secpath_reset(skb);
-#endif
- nf_reset(skb);
+ skb_ext_reset(skb);
+ nf_reset_ct(skb);
#ifdef CONFIG_NET_SCHED
skb->tc_index = 0;
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e7d3b1a513ef..4351577b14d7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -4160,15 +4160,12 @@ static inline void __skb_ext_copy(struct sk_buff *d, const struct sk_buff *s) {}
static inline void skb_ext_copy(struct sk_buff *dst, const struct sk_buff *s) {}
#endif /* CONFIG_SKB_EXTENSIONS */
-static inline void nf_reset(struct sk_buff *skb)
+static inline void nf_reset_ct(struct sk_buff *skb)
{
#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
nf_conntrack_put(skb_nfct(skb));
skb->_nfct = 0;
#endif
-#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
- skb_ext_del(skb, SKB_EXT_BRIDGE_NF);
-#endif
}
static inline void nf_reset_trace(struct sk_buff *skb)
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index a1146cb10919..9cbed6f5a85a 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -436,7 +436,7 @@ void batadv_interface_rx(struct net_device *soft_iface,
/* clean the netfilter state now that the batman-adv header has been
* removed
*/
- nf_reset(skb);
+ nf_reset_ct(skb);
if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
goto dropped;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 01d65206f4fb..529133611ea2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5120,7 +5120,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet)
skb->ignore_df = 0;
skb_dst_drop(skb);
skb_ext_reset(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
nf_reset_trace(skb);
#ifdef CONFIG_NET_SWITCHDEV
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index b685bc82f8d0..d9b4200ed12d 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -871,7 +871,7 @@ lookup:
if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
- nf_reset(skb);
+ nf_reset_ct(skb);
return __sk_receive_skb(sk, skb, 1, dh->dccph_doff * 4, refcounted);
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 1e2392b7c64e..c59a78a267c3 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -199,7 +199,7 @@ resubmit:
kfree_skb(skb);
return;
}
- nf_reset(skb);
+ nf_reset_ct(skb);
}
ret = INDIRECT_CALL_2(ipprot->handler, tcp_v4_rcv, udp_rcv,
skb);
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 313470f6bb14..716d5472c022 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1794,7 +1794,7 @@ static void ip_encap(struct net *net, struct sk_buff *skb,
ip_send_check(iph);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
- nf_reset(skb);
+ nf_reset_ct(skb);
}
static inline int ipmr_forward_finish(struct net *net, struct sock *sk,
@@ -2140,7 +2140,7 @@ int ip_mr_input(struct sk_buff *skb)
mroute_sk = rcu_dereference(mrt->mroute_sk);
if (mroute_sk) {
- nf_reset(skb);
+ nf_reset_ct(skb);
raw_rcv(mroute_sk, skb);
return 0;
}
diff --git a/net/ipv4/netfilter/nf_dup_ipv4.c b/net/ipv4/netfilter/nf_dup_ipv4.c
index af3fbf76dbd3..6cc5743c553a 100644
--- a/net/ipv4/netfilter/nf_dup_ipv4.c
+++ b/net/ipv4/netfilter/nf_dup_ipv4.c
@@ -65,7 +65,7 @@ void nf_dup_ipv4(struct net *net, struct sk_buff *skb, unsigned int hooknum,
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
/* Avoid counting cloned packets towards the original connection. */
- nf_reset(skb);
+ nf_reset_ct(skb);
nf_ct_set(skb, NULL, IP_CT_UNTRACKED);
#endif
/*
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 80da5a66d5d7..3183413ebc6c 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -332,7 +332,7 @@ int raw_rcv(struct sock *sk, struct sk_buff *skb)
kfree_skb(skb);
return NET_RX_DROP;
}
- nf_reset(skb);
+ nf_reset_ct(skb);
skb_push(skb, skb->data - skb_network_header(skb));
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 2ee45e3755e9..bf124b1742df 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1916,7 +1916,7 @@ process:
if (tcp_v4_inbound_md5_hash(sk, skb))
goto discard_and_relse;
- nf_reset(skb);
+ nf_reset_ct(skb);
if (tcp_filter(sk, skb))
goto discard_and_relse;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index cf755156a684..e8443cc5c1ab 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1969,7 +1969,7 @@ static int udp_queue_rcv_one_skb(struct sock *sk, struct sk_buff *skb)
*/
if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
goto drop;
- nf_reset(skb);
+ nf_reset_ct(skb);
if (static_branch_unlikely(&udp_encap_needed_key) && up->encap_type) {
int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
@@ -2298,7 +2298,7 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb))
goto drop;
- nf_reset(skb);
+ nf_reset_ct(skb);
/* No socket. Drop packet silently, if checksum is wrong */
if (udp_lib_checksum_complete(skb))
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index d432d0011c16..7e5df23cbe7b 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -371,7 +371,7 @@ resubmit_final:
/* Free reference early: we don't need it any more,
and it may hold ip_conntrack module loaded
indefinitely. */
- nf_reset(skb);
+ nf_reset_ct(skb);
skb_postpull_rcsum(skb, skb_network_header(skb),
skb_network_header_len(skb));
diff --git a/net/ipv6/netfilter/nf_dup_ipv6.c b/net/ipv6/netfilter/nf_dup_ipv6.c
index e6c9da9866b1..a0a2de30be3e 100644
--- a/net/ipv6/netfilter/nf_dup_ipv6.c
+++ b/net/ipv6/netfilter/nf_dup_ipv6.c
@@ -54,7 +54,7 @@ void nf_dup_ipv6(struct net *net, struct sk_buff *skb, unsigned int hooknum,
return;
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
- nf_reset(skb);
+ nf_reset_ct(skb);
nf_ct_set(skb, NULL, IP_CT_UNTRACKED);
#endif
if (hooknum == NF_INET_PRE_ROUTING ||
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 6e1888ee4036..a77f6b7d3a7c 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -215,7 +215,7 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr)
/* Not releasing hash table! */
if (clone) {
- nf_reset(clone);
+ nf_reset_ct(clone);
rawv6_rcv(sk, clone);
}
}
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 105e5a7092e7..f82ea12bac37 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1078,7 +1078,7 @@ int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
IPSKB_REROUTED);
- nf_reset(skb);
+ nf_reset_ct(skb);
bh_lock_sock(sk);
if (sock_owned_by_user(sk)) {
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index bd3f39349d40..fd5ac2788e45 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -151,7 +151,7 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
skb->ip_summed = CHECKSUM_NONE;
skb_dst_drop(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
rcu_read_lock();
dev = rcu_dereference(spriv->dev);
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 622833317dcb..0d7c887a2b75 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -193,7 +193,7 @@ pass_up:
if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_put;
- nf_reset(skb);
+ nf_reset_ct(skb);
return sk_receive_skb(sk, skb, 1);
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 687e23a8b326..802f19aba7e3 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -206,7 +206,7 @@ pass_up:
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_put;
- nf_reset(skb);
+ nf_reset_ct(skb);
return sk_receive_skb(sk, skb, 1);
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 9c464d24beec..888d3068a492 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -613,7 +613,7 @@ static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
if (unlikely(cp->flags & IP_VS_CONN_F_NFCT))
ret = ip_vs_confirm_conntrack(skb);
if (ret == NF_ACCEPT) {
- nf_reset(skb);
+ nf_reset_ct(skb);
skb_forward_csum(skb);
}
return ret;
diff --git a/net/netfilter/nft_connlimit.c b/net/netfilter/nft_connlimit.c
index af1497ab9464..69d6173f91e2 100644
--- a/net/netfilter/nft_connlimit.c
+++ b/net/netfilter/nft_connlimit.c
@@ -218,8 +218,13 @@ static void nft_connlimit_destroy_clone(const struct nft_ctx *ctx,
static bool nft_connlimit_gc(struct net *net, const struct nft_expr *expr)
{
struct nft_connlimit *priv = nft_expr_priv(expr);
+ bool ret;
- return nf_conncount_gc_list(net, &priv->list);
+ local_bh_disable();
+ ret = nf_conncount_gc_list(net, &priv->list);
+ local_bh_enable();
+
+ return ret;
}
static struct nft_expr_type nft_connlimit_type;
diff --git a/net/openvswitch/vport-internal_dev.c b/net/openvswitch/vport-internal_dev.c
index d2437b5b2f6a..21c90d3a7ebf 100644
--- a/net/openvswitch/vport-internal_dev.c
+++ b/net/openvswitch/vport-internal_dev.c
@@ -237,7 +237,7 @@ static netdev_tx_t internal_dev_recv(struct sk_buff *skb)
}
skb_dst_drop(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
secpath_reset(skb);
skb->pkt_type = PACKET_HOST;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index e2742b006d25..82a50e850245 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1821,7 +1821,7 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,
skb_dst_drop(skb);
/* drop conntrack reference */
- nf_reset(skb);
+ nf_reset_ct(skb);
spkt = &PACKET_SKB_CB(skb)->sa.pkt;
@@ -2121,7 +2121,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
skb_dst_drop(skb);
/* drop conntrack reference */
- nf_reset(skb);
+ nf_reset_ct(skb);
spin_lock(&sk->sk_receive_queue.lock);
po->stats.stats1.tp_packets++;
diff --git a/net/sctp/input.c b/net/sctp/input.c
index 1008cdc44dd6..5a070fb5b278 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -201,7 +201,7 @@ int sctp_rcv(struct sk_buff *skb)
if (!xfrm_policy_check(sk, XFRM_POLICY_IN, skb, family))
goto discard_release;
- nf_reset(skb);
+ nf_reset_ct(skb);
if (sk_filter(sk, skb))
goto discard_release;
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 6088bc2dc11e..9b599ed66d97 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -706,7 +706,7 @@ resume:
if (err)
goto drop;
- nf_reset(skb);
+ nf_reset_ct(skb);
if (decaps) {
sp = skb_sec_path(skb);
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index 2ab4859df55a..0f5131bc3342 100644
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -185,7 +185,7 @@ static void xfrmi_scrub_packet(struct sk_buff *skb, bool xnet)
skb->skb_iif = 0;
skb->ignore_df = 0;
skb_dst_drop(skb);
- nf_reset(skb);
+ nf_reset_ct(skb);
nf_reset_trace(skb);
if (!xnet)
diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c
index 9499b35feb92..b1db55b50ba1 100644
--- a/net/xfrm/xfrm_output.c
+++ b/net/xfrm/xfrm_output.c
@@ -502,7 +502,7 @@ int xfrm_output_resume(struct sk_buff *skb, int err)
struct net *net = xs_net(skb_dst(skb)->xfrm);
while (likely((err = xfrm_output_one(skb, err)) == 0)) {
- nf_reset(skb);
+ nf_reset_ct(skb);
err = skb_dst(skb)->ops->local_out(net, skb->sk, skb);
if (unlikely(err != 1))
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 21e939235b39..f2d1e573ea55 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2808,7 +2808,7 @@ static void xfrm_policy_queue_process(struct timer_list *t)
continue;
}
- nf_reset(skb);
+ nf_reset_ct(skb);
skb_dst_drop(skb);
skb_dst_set(skb, dst);