diff options
Diffstat (limited to 'net/ipv4/tcp.c')
| -rw-r--r-- | net/ipv4/tcp.c | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 4c0da24fb649..34f5db1e1c8b 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -374,7 +374,7 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait) { unsigned int mask; struct sock *sk = sock->sk; - struct tcp_sock *tp = tcp_sk(sk); + const struct tcp_sock *tp = tcp_sk(sk); sock_poll_wait(file, sk_sleep(sk), wait); if (sk->sk_state == TCP_LISTEN) @@ -528,7 +528,7 @@ static inline void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb) tp->pushed_seq = tp->write_seq; } -static inline int forced_push(struct tcp_sock *tp) +static inline int forced_push(const struct tcp_sock *tp) { return after(tp->write_seq, tp->pushed_seq + (tp->max_window >> 1)); } @@ -813,7 +813,7 @@ new_segment: goto wait_for_memory; if (can_coalesce) { - skb_shinfo(skb)->frags[i - 1].size += copy; + skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy); } else { get_page(page); skb_fill_page_desc(skb, i, page, offset, copy); @@ -891,9 +891,9 @@ EXPORT_SYMBOL(tcp_sendpage); #define TCP_PAGE(sk) (sk->sk_sndmsg_page) #define TCP_OFF(sk) (sk->sk_sndmsg_off) -static inline int select_size(struct sock *sk, int sg) +static inline int select_size(const struct sock *sk, int sg) { - struct tcp_sock *tp = tcp_sk(sk); + const struct tcp_sock *tp = tcp_sk(sk); int tmp = tp->mss_cache; if (sg) { @@ -1058,8 +1058,7 @@ new_segment: /* Update the skb. */ if (merge) { - skb_shinfo(skb)->frags[i - 1].size += - copy; + skb_frag_size_add(&skb_shinfo(skb)->frags[i - 1], copy); } else { skb_fill_page_desc(skb, i, page, off, copy); if (TCP_PAGE(sk)) { @@ -1194,13 +1193,11 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied) struct tcp_sock *tp = tcp_sk(sk); int time_to_ack = 0; -#if TCP_DEBUG struct sk_buff *skb = skb_peek(&sk->sk_receive_queue); WARN(skb && !before(tp->copied_seq, TCP_SKB_CB(skb)->end_seq), "cleanup rbuf bug: copied %X seq %X rcvnxt %X\n", tp->copied_seq, TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt); -#endif if (inet_csk_ack_scheduled(sk)) { const struct inet_connection_sock *icsk = inet_csk(sk); @@ -2409,7 +2406,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level, int tcp_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen) { - struct inet_connection_sock *icsk = inet_csk(sk); + const struct inet_connection_sock *icsk = inet_csk(sk); if (level != SOL_TCP) return icsk->icsk_af_ops->setsockopt(sk, level, optname, @@ -2431,9 +2428,9 @@ EXPORT_SYMBOL(compat_tcp_setsockopt); #endif /* Return information about state of tcp endpoint in API format. */ -void tcp_get_info(struct sock *sk, struct tcp_info *info) +void tcp_get_info(const struct sock *sk, struct tcp_info *info) { - struct tcp_sock *tp = tcp_sk(sk); + const struct tcp_sock *tp = tcp_sk(sk); const struct inet_connection_sock *icsk = inet_csk(sk); u32 now = tcp_time_stamp; @@ -2995,23 +2992,25 @@ void tcp_put_md5sig_pool(void) EXPORT_SYMBOL(tcp_put_md5sig_pool); int tcp_md5_hash_header(struct tcp_md5sig_pool *hp, - struct tcphdr *th) + const struct tcphdr *th) { struct scatterlist sg; + struct tcphdr hdr; int err; - __sum16 old_checksum = th->check; - th->check = 0; + /* We are not allowed to change tcphdr, make a local copy */ + memcpy(&hdr, th, sizeof(hdr)); + hdr.check = 0; + /* options aren't included in the hash */ - sg_init_one(&sg, th, sizeof(struct tcphdr)); - err = crypto_hash_update(&hp->md5_desc, &sg, sizeof(struct tcphdr)); - th->check = old_checksum; + sg_init_one(&sg, &hdr, sizeof(hdr)); + err = crypto_hash_update(&hp->md5_desc, &sg, sizeof(hdr)); return err; } EXPORT_SYMBOL(tcp_md5_hash_header); int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, - struct sk_buff *skb, unsigned header_len) + const struct sk_buff *skb, unsigned int header_len) { struct scatterlist sg; const struct tcphdr *tp = tcp_hdr(skb); @@ -3031,8 +3030,8 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, for (i = 0; i < shi->nr_frags; ++i) { const struct skb_frag_struct *f = &shi->frags[i]; struct page *page = skb_frag_page(f); - sg_set_page(&sg, page, f->size, f->page_offset); - if (crypto_hash_update(desc, &sg, f->size)) + sg_set_page(&sg, page, skb_frag_size(f), f->page_offset); + if (crypto_hash_update(desc, &sg, skb_frag_size(f))) return 1; } @@ -3044,7 +3043,7 @@ int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp, } EXPORT_SYMBOL(tcp_md5_hash_skb_data); -int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, struct tcp_md5sig_key *key) +int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, const struct tcp_md5sig_key *key) { struct scatterlist sg; |