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authorIlpo Järvinen <ilpo.jarvinen@helsinki.fi>2007-09-25 22:47:31 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:52:39 -0700
commit912d8f0b1f17b7e851ebbfeb17a16de9f9c7cb88 (patch)
tree176cf4f23aaae9790d947579473da1f8d349a942
parent93e680202929802558f783fbd96c41697ae65472 (diff)
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[TCP] MIB: Count FRTO's successfully detected spurious RTOs
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/snmp.h1
-rw-r--r--net/ipv4/proc.c1
-rw-r--r--net/ipv4/tcp_input.c1
3 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/snmp.h b/include/linux/snmp.h
index d8fd3ec4148..89f0c2b5f40 100644
--- a/include/linux/snmp.h
+++ b/include/linux/snmp.h
@@ -213,6 +213,7 @@ enum
LINUX_MIB_TCPSACKDISCARD, /* TCPSACKDiscard */
LINUX_MIB_TCPDSACKIGNOREDOLD, /* TCPSACKIgnoredOld */
LINUX_MIB_TCPDSACKIGNOREDNOUNDO, /* TCPSACKIgnoredNoUndo */
+ LINUX_MIB_TCPSPURIOUSRTOS, /* TCPSpuriousRTOs */
__LINUX_MIB_MAX
};
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 2015148b41a..9dee70e1cf0 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -245,6 +245,7 @@ static const struct snmp_mib snmp4_net_list[] = {
SNMP_MIB_ITEM("TCPSACKDiscard", LINUX_MIB_TCPSACKDISCARD),
SNMP_MIB_ITEM("TCPDSACKIgnoredOld", LINUX_MIB_TCPDSACKIGNOREDOLD),
SNMP_MIB_ITEM("TCPDSACKIgnoredNoUndo", LINUX_MIB_TCPDSACKIGNOREDNOUNDO),
+ SNMP_MIB_ITEM("TCPSpuriousRTOs", LINUX_MIB_TCPSPURIOUSRTOS),
SNMP_MIB_SENTINEL
};
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 4866e75e98e..4b27739031f 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2935,6 +2935,7 @@ static int tcp_process_frto(struct sock *sk, int flag)
}
tp->frto_counter = 0;
tp->undo_marker = 0;
+ NET_INC_STATS_BH(LINUX_MIB_TCPSPURIOUSRTOS);
}
return 0;
}