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authorTom Herbert <tom@herbertland.com>2016-03-07 23:11:11 +0100
committerDavid S. Miller <davem@davemloft.net>2016-03-09 22:36:15 +0100
commit29152a34f72cb4d7ab32885ad2f20a482c92a8f3 (patch)
tree89287b971525eab8a238437e3e12959074f9fa63 /net/kcm/kcmproc.c
parentkcm: Add memory limit for receive message construction (diff)
downloadlinux-29152a34f72cb4d7ab32885ad2f20a482c92a8f3.tar.xz
linux-29152a34f72cb4d7ab32885ad2f20a482c92a8f3.zip
kcm: Add receive message timeout
This patch adds receive timeout for message assembly on the attached TCP sockets. The timeout is set when a new messages is started and the whole message has not been received by TCP (not in the receive queue). If the completely message is subsequently received the timer is cancelled, if the timer expires the RX side is aborted. The timeout value is taken from the socket timeout (SO_RCVTIMEO) that is set on a TCP socket (i.e. set by get sockopt before attaching a TCP socket to KCM. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/kcm/kcmproc.c')
-rw-r--r--net/kcm/kcmproc.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/kcm/kcmproc.c b/net/kcm/kcmproc.c
index 7638b3555b17..738008726cc6 100644
--- a/net/kcm/kcmproc.c
+++ b/net/kcm/kcmproc.c
@@ -331,7 +331,7 @@ static int kcm_stats_seq_show(struct seq_file *seq, void *v)
mux_stats.rx_ready_drops);
seq_printf(seq,
- "%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s\n",
+ "%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s\n",
"Psock",
"RX-Msgs",
"RX-Bytes",
@@ -344,10 +344,11 @@ static int kcm_stats_seq_show(struct seq_file *seq, void *v)
"RX-NeedMor",
"RX-BadLen",
"RX-TooBig",
+ "RX-Timeout",
"TX-Aborts");
seq_printf(seq,
- "%-8s %-10llu %-16llu %-10llu %-16llu %-10llu %-10llu %-10u %-10u %-10u %-10u %-10u %-10u\n",
+ "%-8s %-10llu %-16llu %-10llu %-16llu %-10llu %-10llu %-10u %-10u %-10u %-10u %-10u %-10u %-10u\n",
"",
psock_stats.rx_msgs,
psock_stats.rx_bytes,
@@ -360,6 +361,7 @@ static int kcm_stats_seq_show(struct seq_file *seq, void *v)
psock_stats.rx_need_more_hdr,
psock_stats.rx_bad_hdr_len,
psock_stats.rx_msg_too_big,
+ psock_stats.rx_msg_timeouts,
psock_stats.tx_aborts);
return 0;