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Diffstat (limited to 'net/ipv4/ip_output.c')
-rw-r--r--net/ipv4/ip_output.c61
1 files changed, 36 insertions, 25 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index fd99fbd685ea..18070ca65771 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -91,6 +91,28 @@ __inline__ void ip_send_check(struct iphdr *iph)
iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
}
+int __ip_local_out(struct sk_buff *skb)
+{
+ struct iphdr *iph = ip_hdr(skb);
+
+ iph->tot_len = htons(skb->len);
+ ip_send_check(iph);
+ return nf_hook(PF_INET, NF_INET_LOCAL_OUT, skb, NULL, skb->dst->dev,
+ dst_output);
+}
+
+int ip_local_out(struct sk_buff *skb)
+{
+ int err;
+
+ err = __ip_local_out(skb);
+ if (likely(err == 1))
+ err = dst_output(skb);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(ip_local_out);
+
/* dev_loopback_xmit for use with netfilter. */
static int ip_dev_loopback_xmit(struct sk_buff *newskb)
{
@@ -138,20 +160,17 @@ int ip_build_and_send_pkt(struct sk_buff *skb, struct sock *sk,
iph->daddr = rt->rt_dst;
iph->saddr = rt->rt_src;
iph->protocol = sk->sk_protocol;
- iph->tot_len = htons(skb->len);
ip_select_ident(iph, &rt->u.dst, sk);
if (opt && opt->optlen) {
iph->ihl += opt->optlen>>2;
ip_options_build(skb, opt, daddr, rt, 0);
}
- ip_send_check(iph);
skb->priority = sk->sk_priority;
/* Send it out. */
- return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
- dst_output);
+ return ip_local_out(skb);
}
EXPORT_SYMBOL_GPL(ip_build_and_send_pkt);
@@ -251,8 +270,8 @@ int ip_mc_output(struct sk_buff *skb)
) {
struct sk_buff *newskb = skb_clone(skb, GFP_ATOMIC);
if (newskb)
- NF_HOOK(PF_INET, NF_IP_POST_ROUTING, newskb, NULL,
- newskb->dev,
+ NF_HOOK(PF_INET, NF_INET_POST_ROUTING, newskb,
+ NULL, newskb->dev,
ip_dev_loopback_xmit);
}
@@ -267,11 +286,11 @@ int ip_mc_output(struct sk_buff *skb)
if (rt->rt_flags&RTCF_BROADCAST) {
struct sk_buff *newskb = skb_clone(skb, GFP_ATOMIC);
if (newskb)
- NF_HOOK(PF_INET, NF_IP_POST_ROUTING, newskb, NULL,
+ NF_HOOK(PF_INET, NF_INET_POST_ROUTING, newskb, NULL,
newskb->dev, ip_dev_loopback_xmit);
}
- return NF_HOOK_COND(PF_INET, NF_IP_POST_ROUTING, skb, NULL, skb->dev,
+ return NF_HOOK_COND(PF_INET, NF_INET_POST_ROUTING, skb, NULL, skb->dev,
ip_finish_output,
!(IPCB(skb)->flags & IPSKB_REROUTED));
}
@@ -285,7 +304,7 @@ int ip_output(struct sk_buff *skb)
skb->dev = dev;
skb->protocol = htons(ETH_P_IP);
- return NF_HOOK_COND(PF_INET, NF_IP_POST_ROUTING, skb, NULL, dev,
+ return NF_HOOK_COND(PF_INET, NF_INET_POST_ROUTING, skb, NULL, dev,
ip_finish_output,
!(IPCB(skb)->flags & IPSKB_REROUTED));
}
@@ -331,7 +350,7 @@ int ip_queue_xmit(struct sk_buff *skb, int ipfragok)
* itself out.
*/
security_sk_classify_flow(sk, &fl);
- if (ip_route_output_flow(&rt, &fl, sk, 0))
+ if (ip_route_output_flow(&init_net, &rt, &fl, sk, 0))
goto no_route;
}
sk_setup_caps(sk, &rt->u.dst);
@@ -347,7 +366,6 @@ packet_routed:
skb_reset_network_header(skb);
iph = ip_hdr(skb);
*((__be16 *)iph) = htons((4 << 12) | (5 << 8) | (inet->tos & 0xff));
- iph->tot_len = htons(skb->len);
if (ip_dont_fragment(sk, &rt->u.dst) && !ipfragok)
iph->frag_off = htons(IP_DF);
else
@@ -366,13 +384,9 @@ packet_routed:
ip_select_ident_more(iph, &rt->u.dst, sk,
(skb_shinfo(skb)->gso_segs ?: 1) - 1);
- /* Add an IP checksum. */
- ip_send_check(iph);
-
skb->priority = sk->sk_priority;
- return NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, rt->u.dst.dev,
- dst_output);
+ return ip_local_out(skb);
no_route:
IP_INC_STATS(IPSTATS_MIB_OUTNOROUTES);
@@ -1016,8 +1030,6 @@ alloc_new_skb:
skb_fill_page_desc(skb, i, page, 0, 0);
frag = &skb_shinfo(skb)->frags[i];
- skb->truesize += PAGE_SIZE;
- atomic_add(PAGE_SIZE, &sk->sk_wmem_alloc);
} else {
err = -EMSGSIZE;
goto error;
@@ -1030,6 +1042,8 @@ alloc_new_skb:
frag->size += copy;
skb->len += copy;
skb->data_len += copy;
+ skb->truesize += copy;
+ atomic_add(copy, &sk->sk_wmem_alloc);
}
offset += copy;
length -= copy;
@@ -1172,6 +1186,8 @@ ssize_t ip_append_page(struct sock *sk, struct page *page,
skb->len += len;
skb->data_len += len;
+ skb->truesize += len;
+ atomic_add(len, &sk->sk_wmem_alloc);
offset += len;
size -= len;
}
@@ -1260,14 +1276,12 @@ int ip_push_pending_frames(struct sock *sk)
ip_options_build(skb, opt, inet->cork.addr, rt, 0);
}
iph->tos = inet->tos;
- iph->tot_len = htons(skb->len);
iph->frag_off = df;
ip_select_ident(iph, &rt->u.dst, sk);
iph->ttl = ttl;
iph->protocol = sk->sk_protocol;
iph->saddr = rt->rt_src;
iph->daddr = rt->rt_dst;
- ip_send_check(iph);
skb->priority = sk->sk_priority;
skb->dst = dst_clone(&rt->u.dst);
@@ -1277,8 +1291,7 @@ int ip_push_pending_frames(struct sock *sk)
skb_transport_header(skb))->type);
/* Netfilter gets whole the not fragmented skb. */
- err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL,
- skb->dst->dev, dst_output);
+ err = ip_local_out(skb);
if (err) {
if (err > 0)
err = inet->recverr ? net_xmit_errno(err) : 0;
@@ -1328,8 +1341,6 @@ static int ip_reply_glue_bits(void *dptr, char *to, int offset,
*
* Should run single threaded per socket because it uses the sock
* structure to pass arguments.
- *
- * LATER: switch from ip_build_xmit to ip_append_*
*/
void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *arg,
unsigned int len)
@@ -1368,7 +1379,7 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
.dport = tcp_hdr(skb)->source } },
.proto = sk->sk_protocol };
security_skb_classify_flow(skb, &fl);
- if (ip_route_output_key(&rt, &fl))
+ if (ip_route_output_key(sk->sk_net, &rt, &fl))
return;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 07:49:50 +0100