diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/proc.c | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp_input.c | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index a631a1f110c..731789bb499 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -234,6 +234,9 @@ static const struct snmp_mib snmp4_net_list[] = { SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS), SNMP_MIB_ITEM("TCPMD5NotFound", LINUX_MIB_TCPMD5NOTFOUND), SNMP_MIB_ITEM("TCPMD5Unexpected", LINUX_MIB_TCPMD5UNEXPECTED), + SNMP_MIB_ITEM("TCPSackShifted", LINUX_MIB_SACKSHIFTED), + SNMP_MIB_ITEM("TCPSackMerged", LINUX_MIB_SACKMERGED), + SNMP_MIB_ITEM("TCPSackShiftFallback", LINUX_MIB_SACKSHIFTFALLBACK), SNMP_MIB_SENTINEL }; diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index e6291dde334..9f8a80ba17b 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -1415,6 +1415,7 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *prev, if (skb->len > 0) { BUG_ON(!tcp_skb_pcount(skb)); + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SACKSHIFTED); return 0; } @@ -1436,6 +1437,8 @@ static int tcp_shifted_skb(struct sock *sk, struct sk_buff *prev, tcp_unlink_write_queue(skb, sk); sk_wmem_free_skb(sk, skb); + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SACKMERGED); + return 1; } @@ -1594,6 +1597,7 @@ noop: return skb; fallback: + NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_SACKSHIFTFALLBACK); return NULL; } |