diff options
| -rw-r--r-- | include/net/tcp.h | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 21 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 3 |
3 files changed, 12 insertions, 15 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 6156d1d068e1..fce4b653c23e 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1680,8 +1680,7 @@ static inline bool tcp_checksum_complete(struct sk_buff *skb) __skb_checksum_complete(skb); } -bool tcp_add_backlog(struct sock *sk, struct sk_buff *skb, - enum skb_drop_reason *reason); +enum skb_drop_reason tcp_add_backlog(struct sock *sk, struct sk_buff *skb); static inline int tcp_filter(struct sock *sk, struct sk_buff *skb, enum skb_drop_reason *reason) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 69ab236072e7..c9bbbf323648 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1900,8 +1900,7 @@ err_discard: } EXPORT_SYMBOL(tcp_v4_do_rcv); -bool tcp_add_backlog(struct sock *sk, struct sk_buff *skb, - enum skb_drop_reason *reason) +enum skb_drop_reason tcp_add_backlog(struct sock *sk, struct sk_buff *skb) { u32 tail_gso_size, tail_gso_segs; struct skb_shared_info *shinfo; @@ -1929,10 +1928,9 @@ bool tcp_add_backlog(struct sock *sk, struct sk_buff *skb, if (unlikely(tcp_checksum_complete(skb))) { bh_unlock_sock(sk); trace_tcp_bad_csum(skb); - *reason = SKB_DROP_REASON_TCP_CSUM; __TCP_INC_STATS(sock_net(sk), TCP_MIB_CSUMERRORS); __TCP_INC_STATS(sock_net(sk), TCP_MIB_INERRS); - return true; + return SKB_DROP_REASON_TCP_CSUM; } /* Attempt coalescing to last skb in backlog, even if we are @@ -2006,7 +2004,7 @@ bool tcp_add_backlog(struct sock *sk, struct sk_buff *skb, __NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPBACKLOGCOALESCE); kfree_skb_partial(skb, fragstolen); - return false; + return SKB_NOT_DROPPED_YET; } __skb_push(skb, hdrlen); @@ -2031,15 +2029,13 @@ no_coalesce: if (unlikely(err)) { bh_unlock_sock(sk); if (err == -ENOMEM) { - *reason = SKB_DROP_REASON_PFMEMALLOC; __NET_INC_STATS(sock_net(sk), LINUX_MIB_PFMEMALLOCDROP); - } else { - *reason = SKB_DROP_REASON_SOCKET_BACKLOG; - __NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPBACKLOGDROP); + return SKB_DROP_REASON_PFMEMALLOC; } - return true; + __NET_INC_STATS(sock_net(sk), LINUX_MIB_TCPBACKLOGDROP); + return SKB_DROP_REASON_SOCKET_BACKLOG; } - return false; + return SKB_NOT_DROPPED_YET; } static void tcp_v4_restore_cb(struct sk_buff *skb) @@ -2247,7 +2243,8 @@ process: if (!sock_owned_by_user(sk)) { ret = tcp_v4_do_rcv(sk, skb); } else { - if (tcp_add_backlog(sk, skb, &drop_reason)) + drop_reason = tcp_add_backlog(sk, skb); + if (drop_reason) goto discard_and_relse; } bh_unlock_sock(sk); diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 8dc3874e8b92..1d37826e8480 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1877,7 +1877,8 @@ process: if (!sock_owned_by_user(sk)) { ret = tcp_v6_do_rcv(sk, skb); } else { - if (tcp_add_backlog(sk, skb, &drop_reason)) + drop_reason = tcp_add_backlog(sk, skb); + if (drop_reason) goto discard_and_relse; } bh_unlock_sock(sk); |