kernel_optimize_test/net
Eric Dumazet 946cedccbd tcp: Change possible SYN flooding messages
"Possible SYN flooding on port xxxx " messages can fill logs on servers.

Change logic to log the message only once per listener, and add two new
SNMP counters to track :

TCPReqQFullDoCookies : number of times a SYNCOOKIE was replied to client

TCPReqQFullDrop : number of times a SYN request was dropped because
syncookies were not enabled.

Based on a prior patch from Tom Herbert, and suggestions from David.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-09-15 14:49:43 -04:00
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9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bridge
caif
can
ceph
core
dcb
dccp
decnet
dns_resolver
dsa
econet
ethernet
ieee802154
ipv4 tcp: Change possible SYN flooding messages 2011-09-15 14:49:43 -04:00
ipv6 tcp: Change possible SYN flooding messages 2011-09-15 14:49:43 -04:00
ipx
irda
iucv
key
l2tp
lapb
llc
mac80211
netfilter
netlabel
netlink
netrom
nfc
packet
phonet
rds
rfkill
rose
rxrpc
sched
sctp
sunrpc
tipc
unix
wanrouter
wimax
wireless
x25
xfrm
compat.c
Kconfig
Makefile
nonet.c
socket.c
sysctl_net.c