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[TCP]: struct tcp_sack_block annotations

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Some of the instances of tcp_sack_block are host-endian, some - net-endian.
Define struct tcp_sack_block_wire identical to struct tcp_sack_block
with u32 replaced with __be32; annotate uses of tcp_sack_block replacing
net-endian ones with tcp_sack_block_wire.  Change is obviously safe since
for cc(1) __be32 is typedefed to u32.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro 2006-09-27 18:32:28 -07:00 committed by David S. Miller
parent 46a97324a5
commit 269bd27e66
3 changed files with 7 additions and 2 deletions
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5
include/linux/tcp.h
View File

@ -166,6 +166,11 @@ struct tcp_info
#include <net/inet_timewait_sock.h>
/* This defines a selective acknowledgement block. */
struct tcp_sack_block_wire {
__be32 start_seq;
__be32 end_seq;
};
struct tcp_sack_block {
__u32 start_seq;
__u32 end_seq;

2
net/ipv4/netfilter/ip_nat_helper.c
View File

@ -283,7 +283,7 @@ sack_adjust(struct sk_buff *skb,
struct ip_nat_seq *natseq)
{
while (sackoff < sackend) {
struct tcp_sack_block *sack;
struct tcp_sack_block_wire *sack;
u_int32_t new_start_seq, new_end_seq;
sack = (void *)skb->data + sackoff;

2
net/ipv4/tcp_input.c
View File

@ -935,7 +935,7 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
const struct inet_connection_sock *icsk = inet_csk(sk);
struct tcp_sock *tp = tcp_sk(sk);
unsigned char *ptr = ack_skb->h.raw + TCP_SKB_CB(ack_skb)->sacked;
struct tcp_sack_block *sp = (struct tcp_sack_block *)(ptr+2);
struct tcp_sack_block_wire *sp = (struct tcp_sack_block_wire *)(ptr+2);
int num_sacks = (ptr[1] - TCPOLEN_SACK_BASE)>>3;
int reord = tp->packets_out;
int prior_fackets;