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-rw-r--r--net/ipv4/fib_frontend.c2
-rw-r--r--net/ipv4/fib_semantics.c1
-rw-r--r--net/ipv4/ip_tunnel.c17
-rw-r--r--net/ipv4/ipmr.c2
-rw-r--r--net/ipv4/netfilter/ipt_rpfilter.c5
-rw-r--r--net/ipv4/route.c3
-rw-r--r--net/ipv4/tcp_cubic.c2
-rw-r--r--net/ipv4/tcp_output.c14
8 files changed, 22 insertions, 24 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 1a629f870274..255aa9946fe7 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -250,7 +250,7 @@ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
bool dev_match;
fl4.flowi4_oif = 0;
- fl4.flowi4_iif = oif;
+ fl4.flowi4_iif = oif ? : LOOPBACK_IFINDEX;
fl4.daddr = src;
fl4.saddr = dst;
fl4.flowi4_tos = tos;
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index b53f0bf84dca..8a043f03c88e 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -631,6 +631,7 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
.daddr = nh->nh_gw,
.flowi4_scope = cfg->fc_scope + 1,
.flowi4_oif = nh->nh_oif,
+ .flowi4_iif = LOOPBACK_IFINDEX,
};
/* It is not necessary, but requires a bit of thinking */
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 484d0ce27ef7..b3f859731c60 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -442,6 +442,8 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
tunnel->i_seqno = ntohl(tpi->seq) + 1;
}
+ skb_reset_network_header(skb);
+
err = IP_ECN_decapsulate(iph, skb);
if (unlikely(err)) {
if (log_ecn_error)
@@ -722,19 +724,18 @@ static void ip_tunnel_update(struct ip_tunnel_net *itn,
int ip_tunnel_ioctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd)
{
int err = 0;
- struct ip_tunnel *t;
- struct net *net = dev_net(dev);
- struct ip_tunnel *tunnel = netdev_priv(dev);
- struct ip_tunnel_net *itn = net_generic(net, tunnel->ip_tnl_net_id);
+ struct ip_tunnel *t = netdev_priv(dev);
+ struct net *net = t->net;
+ struct ip_tunnel_net *itn = net_generic(net, t->ip_tnl_net_id);
BUG_ON(!itn->fb_tunnel_dev);
switch (cmd) {
case SIOCGETTUNNEL:
- t = NULL;
- if (dev == itn->fb_tunnel_dev)
+ if (dev == itn->fb_tunnel_dev) {
t = ip_tunnel_find(itn, p, itn->fb_tunnel_dev->type);
- if (t == NULL)
- t = netdev_priv(dev);
+ if (t == NULL)
+ t = netdev_priv(dev);
+ }
memcpy(p, &t->parms, sizeof(*p));
break;
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 28863570dd60..d84dc8d4c916 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -455,7 +455,7 @@ static netdev_tx_t reg_vif_xmit(struct sk_buff *skb, struct net_device *dev)
struct mr_table *mrt;
struct flowi4 fl4 = {
.flowi4_oif = dev->ifindex,
- .flowi4_iif = skb->skb_iif,
+ .flowi4_iif = skb->skb_iif ? : LOOPBACK_IFINDEX,
.flowi4_mark = skb->mark,
};
int err;
diff --git a/net/ipv4/netfilter/ipt_rpfilter.c b/net/ipv4/netfilter/ipt_rpfilter.c
index c49dcd0284a0..4bfaedf9b34e 100644
--- a/net/ipv4/netfilter/ipt_rpfilter.c
+++ b/net/ipv4/netfilter/ipt_rpfilter.c
@@ -89,11 +89,8 @@ static bool rpfilter_mt(const struct sk_buff *skb, struct xt_action_param *par)
if (ipv4_is_multicast(iph->daddr)) {
if (ipv4_is_zeronet(iph->saddr))
return ipv4_is_local_multicast(iph->daddr) ^ invert;
- flow.flowi4_iif = 0;
- } else {
- flow.flowi4_iif = LOOPBACK_IFINDEX;
}
-
+ flow.flowi4_iif = LOOPBACK_IFINDEX;
flow.daddr = iph->saddr;
flow.saddr = rpfilter_get_saddr(iph->daddr);
flow.flowi4_oif = 0;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1485aafcad59..db1e0da871f4 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1700,8 +1700,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
if (res.type == RTN_LOCAL) {
err = fib_validate_source(skb, saddr, daddr, tos,
- LOOPBACK_IFINDEX,
- dev, in_dev, &itag);
+ 0, dev, in_dev, &itag);
if (err < 0)
goto martian_source_keep_err;
goto local_input;
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 8bf224516ba2..b4f1b29b08bd 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -409,7 +409,7 @@ static void bictcp_acked(struct sock *sk, u32 cnt, s32 rtt_us)
ratio -= ca->delayed_ack >> ACK_RATIO_SHIFT;
ratio += cnt;
- ca->delayed_ack = min(ratio, ACK_RATIO_LIMIT);
+ ca->delayed_ack = clamp(ratio, 1U, ACK_RATIO_LIMIT);
}
/* Some calls are for duplicates without timetamps */
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 025e25093984..12d6016bdd9a 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2441,8 +2441,14 @@ int __tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
err = tcp_transmit_skb(sk, skb, 1, GFP_ATOMIC);
}
- if (likely(!err))
+ if (likely(!err)) {
TCP_SKB_CB(skb)->sacked |= TCPCB_EVER_RETRANS;
+ /* Update global TCP statistics. */
+ TCP_INC_STATS(sock_net(sk), TCP_MIB_RETRANSSEGS);
+ if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN)
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS);
+ tp->total_retrans++;
+ }
return err;
}
@@ -2452,12 +2458,6 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
int err = __tcp_retransmit_skb(sk, skb);
if (err == 0) {
- /* Update global TCP statistics. */
- TCP_INC_STATS(sock_net(sk), TCP_MIB_RETRANSSEGS);
- if (TCP_SKB_CB(skb)->tcp_flags & TCPHDR_SYN)
- NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS);
- tp->total_retrans++;
-
#if FASTRETRANS_DEBUG > 0
if (TCP_SKB_CB(skb)->sacked & TCPCB_SACKED_RETRANS) {
net_dbg_ratelimited("retrans_out leaked\n");
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