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Commit 912d8f0b authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by David S. Miller
Browse files

[TCP] MIB: Count FRTO's successfully detected spurious RTOs 



Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 93e68020

include/linux/snmp.h

+1 −0
Original line number Diff line number Diff line
@@ -213,6 +213,7 @@ enum 
	LINUX_MIB_TCPSACKDISCARD,		/* TCPSACKDiscard */

	LINUX_MIB_TCPDSACKIGNOREDOLD,		/* TCPSACKIgnoredOld */

	LINUX_MIB_TCPDSACKIGNOREDNOUNDO,	/* TCPSACKIgnoredNoUndo */

	LINUX_MIB_TCPSPURIOUSRTOS,		/* TCPSpuriousRTOs */

	__LINUX_MIB_MAX

};

net/ipv4/proc.c

+1 −0
Original line number Diff line number Diff line
@@ -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

};

net/ipv4/tcp_input.c

+1 −0
Original line number Diff line number Diff line
@@ -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;

}