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Allow the size of the routing socket netisr queue to be configured using

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the tunable or sysctl 'net.route.netisr_maxqlen'.  Default the maximum
depth to 256 rather than IFQ_MAXLEN due to the downsides of dropping
routing messages.

MT5 candidate.

Discussed with:	mdodd, mlaier, Vincent Jardin <jardin at 6wind.com>
This commit is contained in:
Robert Watson 2004-08-21 21:20:06 +00:00
parent d12bd83e9b
commit 190a4c9436
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=134137
1 changed files with 6 additions and 1 deletions
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7
sys/net/rtsock.c
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@ -74,6 +74,11 @@ MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF);
static struct ifqueue rtsintrq;
SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD, 0, "");
SYSCTL_INT(_net_route, OID_AUTO, netisr_maxqlen, CTLFLAG_RW,
&rtsintrq.ifq_maxlen, 0, "maximum routing socket dispatch queue length");
TUNABLE_INT("net.route.netisr_maxqlen", &rtsintrq.ifq_maxlen);
struct walkarg {
int w_tmemsize;
int w_op, w_arg;
@ -101,7 +106,7 @@ static void
rts_init(void)
{
IFQ_SET_MAXLEN(&rtsintrq, IFQ_MAXLEN);
rtsintrq.ifq_maxlen = 256;
mtx_init(&rtsintrq.ifq_mtx, "rts_inq", NULL, MTX_DEF);
netisr_register(NETISR_ROUTE, rts_input, &rtsintrq, NETISR_MPSAFE);
}