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Diffstat (limited to 'net/ipv6/ip6_output.c')
-rw-r--r--net/ipv6/ip6_output.c63
1 files changed, 33 insertions, 30 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 36cf0ab685a0..7fde1f265c90 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -56,7 +56,7 @@
#include <net/checksum.h>
#include <linux/mroute6.h>
-static int ip6_finish_output2(struct sk_buff *skb)
+static int ip6_finish_output2(struct sock *sk, struct sk_buff *skb)
{
struct dst_entry *dst = skb_dst(skb);
struct net_device *dev = dst->dev;
@@ -70,7 +70,7 @@ static int ip6_finish_output2(struct sk_buff *skb)
if (ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr)) {
struct inet6_dev *idev = ip6_dst_idev(skb_dst(skb));
- if (!(dev->flags & IFF_LOOPBACK) && sk_mc_loop(skb->sk) &&
+ if (!(dev->flags & IFF_LOOPBACK) && sk_mc_loop(sk) &&
((mroute6_socket(dev_net(dev), skb) &&
!(IP6CB(skb)->flags & IP6SKB_FORWARDED)) ||
ipv6_chk_mcast_addr(dev, &ipv6_hdr(skb)->daddr,
@@ -82,7 +82,7 @@ static int ip6_finish_output2(struct sk_buff *skb)
*/
if (newskb)
NF_HOOK(NFPROTO_IPV6, NF_INET_POST_ROUTING,
- newskb, NULL, newskb->dev,
+ sk, newskb, NULL, newskb->dev,
dev_loopback_xmit);
if (ipv6_hdr(skb)->hop_limit == 0) {
@@ -122,14 +122,14 @@ static int ip6_finish_output2(struct sk_buff *skb)
return -EINVAL;
}
-static int ip6_finish_output(struct sk_buff *skb)
+static int ip6_finish_output(struct sock *sk, struct sk_buff *skb)
{
if ((skb->len > ip6_skb_dst_mtu(skb) && !skb_is_gso(skb)) ||
dst_allfrag(skb_dst(skb)) ||
(IP6CB(skb)->frag_max_size && skb->len > IP6CB(skb)->frag_max_size))
- return ip6_fragment(skb, ip6_finish_output2);
+ return ip6_fragment(sk, skb, ip6_finish_output2);
else
- return ip6_finish_output2(skb);
+ return ip6_finish_output2(sk, skb);
}
int ip6_output(struct sock *sk, struct sk_buff *skb)
@@ -143,7 +143,8 @@ int ip6_output(struct sock *sk, struct sk_buff *skb)
return 0;
}
- return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING, skb, NULL, dev,
+ return NF_HOOK_COND(NFPROTO_IPV6, NF_INET_POST_ROUTING, sk, skb,
+ NULL, dev,
ip6_finish_output,
!(IP6CB(skb)->flags & IP6SKB_REROUTED));
}
@@ -177,7 +178,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
if (skb_headroom(skb) < head_room) {
struct sk_buff *skb2 = skb_realloc_headroom(skb, head_room);
- if (skb2 == NULL) {
+ if (!skb2) {
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUTDISCARDS);
kfree_skb(skb);
@@ -223,8 +224,8 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
if ((skb->len <= mtu) || skb->ignore_df || skb_is_gso(skb)) {
IP6_UPD_PO_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_OUT, skb->len);
- return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, skb, NULL,
- dst->dev, dst_output);
+ return NF_HOOK(NFPROTO_IPV6, NF_INET_LOCAL_OUT, sk, skb,
+ NULL, dst->dev, dst_output_sk);
}
skb->dev = dst->dev;
@@ -316,10 +317,10 @@ static int ip6_forward_proxy_check(struct sk_buff *skb)
return 0;
}
-static inline int ip6_forward_finish(struct sk_buff *skb)
+static inline int ip6_forward_finish(struct sock *sk, struct sk_buff *skb)
{
skb_sender_cpu_clear(skb);
- return dst_output(skb);
+ return dst_output_sk(sk, skb);
}
static unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst)
@@ -511,7 +512,8 @@ int ip6_forward(struct sk_buff *skb)
IP6_INC_STATS_BH(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTFORWDATAGRAMS);
IP6_ADD_STATS_BH(net, ip6_dst_idev(dst), IPSTATS_MIB_OUTOCTETS, skb->len);
- return NF_HOOK(NFPROTO_IPV6, NF_INET_FORWARD, skb, skb->dev, dst->dev,
+ return NF_HOOK(NFPROTO_IPV6, NF_INET_FORWARD, NULL, skb,
+ skb->dev, dst->dev,
ip6_forward_finish);
error:
@@ -538,7 +540,8 @@ static void ip6_copy_metadata(struct sk_buff *to, struct sk_buff *from)
skb_copy_secmark(to, from);
}
-int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
+int ip6_fragment(struct sock *sk, struct sk_buff *skb,
+ int (*output)(struct sock *, struct sk_buff *))
{
struct sk_buff *frag;
struct rt6_info *rt = (struct rt6_info *)skb_dst(skb);
@@ -629,7 +632,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
skb_reset_network_header(skb);
memcpy(skb_network_header(skb), tmp_hdr, hlen);
- ipv6_select_ident(fh, rt);
+ ipv6_select_ident(net, fh, rt);
fh->nexthdr = nexthdr;
fh->reserved = 0;
fh->frag_off = htons(IP6_MF);
@@ -658,7 +661,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
fh->nexthdr = nexthdr;
fh->reserved = 0;
fh->frag_off = htons(offset);
- if (frag->next != NULL)
+ if (frag->next)
fh->frag_off |= htons(IP6_MF);
fh->identification = frag_id;
ipv6_hdr(frag)->payload_len =
@@ -667,7 +670,7 @@ int ip6_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *))
ip6_copy_metadata(frag, skb);
}
- err = output(skb);
+ err = output(sk, skb);
if (!err)
IP6_INC_STATS(net, ip6_dst_idev(&rt->dst),
IPSTATS_MIB_FRAGCREATES);
@@ -776,7 +779,7 @@ slow_path:
fh->nexthdr = nexthdr;
fh->reserved = 0;
if (!frag_id) {
- ipv6_select_ident(fh, rt);
+ ipv6_select_ident(net, fh, rt);
frag_id = fh->identification;
} else
fh->identification = frag_id;
@@ -800,7 +803,7 @@ slow_path:
/*
* Put this fragment into the sending queue.
*/
- err = output(frag);
+ err = output(sk, frag);
if (err)
goto fail;
@@ -824,7 +827,7 @@ static inline int ip6_rt_check(const struct rt6key *rt_key,
const struct in6_addr *addr_cache)
{
return (rt_key->plen != 128 || !ipv6_addr_equal(fl_addr, &rt_key->addr)) &&
- (addr_cache == NULL || !ipv6_addr_equal(fl_addr, addr_cache));
+ (!addr_cache || !ipv6_addr_equal(fl_addr, addr_cache));
}
static struct dst_entry *ip6_sk_dst_check(struct sock *sk,
@@ -883,7 +886,7 @@ static int ip6_dst_lookup_tail(struct sock *sk,
#endif
int err;
- if (*dst == NULL)
+ if (!*dst)
*dst = ip6_route_output(net, sk, fl6);
err = (*dst)->error;
@@ -1046,11 +1049,11 @@ static inline int ip6_ufo_append_data(struct sock *sk,
* udp datagram
*/
skb = skb_peek_tail(queue);
- if (skb == NULL) {
+ if (!skb) {
skb = sock_alloc_send_skb(sk,
hh_len + fragheaderlen + transhdrlen + 20,
(flags & MSG_DONTWAIT), &err);
- if (skb == NULL)
+ if (!skb)
return err;
/* reserve space for Hardware header */
@@ -1080,7 +1083,7 @@ static inline int ip6_ufo_append_data(struct sock *sk,
skb_shinfo(skb)->gso_size = (mtu - fragheaderlen -
sizeof(struct frag_hdr)) & ~7;
skb_shinfo(skb)->gso_type = SKB_GSO_UDP;
- ipv6_select_ident(&fhdr, rt);
+ ipv6_select_ident(sock_net(sk), &fhdr, rt);
skb_shinfo(skb)->ip6_frag_id = fhdr.identification;
append:
@@ -1108,7 +1111,7 @@ static void ip6_append_data_mtu(unsigned int *mtu,
unsigned int orig_mtu)
{
if (!(rt->dst.flags & DST_XFRM_TUNNEL)) {
- if (skb == NULL) {
+ if (!skb) {
/* first fragment, reserve header_len */
*mtu = orig_mtu - rt->dst.header_len;
@@ -1140,7 +1143,7 @@ static int ip6_setup_cork(struct sock *sk, struct inet_cork_full *cork,
return -EINVAL;
v6_cork->opt = kzalloc(opt->tot_len, sk->sk_allocation);
- if (unlikely(v6_cork->opt == NULL))
+ if (unlikely(!v6_cork->opt))
return -ENOBUFS;
v6_cork->opt->tot_len = opt->tot_len;
@@ -1332,7 +1335,7 @@ alloc_new_skb:
else
fraggap = 0;
/* update mtu and maxfraglen if necessary */
- if (skb == NULL || skb_prev == NULL)
+ if (!skb || !skb_prev)
ip6_append_data_mtu(&mtu, &maxfraglen,
fragheaderlen, skb, rt,
orig_mtu);
@@ -1384,10 +1387,10 @@ alloc_new_skb:
skb = sock_wmalloc(sk,
alloclen + hh_len, 1,
sk->sk_allocation);
- if (unlikely(skb == NULL))
+ if (unlikely(!skb))
err = -ENOBUFS;
}
- if (skb == NULL)
+ if (!skb)
goto error;
/*
* Fill in the control structures
@@ -1579,7 +1582,7 @@ struct sk_buff *__ip6_make_skb(struct sock *sk,
unsigned char proto = fl6->flowi6_proto;
skb = __skb_dequeue(queue);
- if (skb == NULL)
+ if (!skb)
goto out;
tail_skb = &(skb_shinfo(skb)->frag_list);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 18:40:46 +0100