Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth

[pandora-kernel.git] / net / ipv4 / tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 132be08..34f5db1 100644 (file)
--- 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));
 }
@@ -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) {
@@ -1193,13 +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);
@@ -2408,7 +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,
@@ -2430,9 +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;
 
@@ -2994,23 +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);
@@ -3043,7 +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;