Allow the size of the routing socket netisr queue to be configured using
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>
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=134137
@ -74,6 +74,11 @@ MTX_SYSINIT(rtsock, &rtsock_mtx, "rtsock route_cb lock", MTX_DEF);
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static struct ifqueue rtsintrq;
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SYSCTL_NODE(_net, OID_AUTO, route, CTLFLAG_RD, 0, "");
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SYSCTL_INT(_net_route, OID_AUTO, netisr_maxqlen, CTLFLAG_RW,
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&rtsintrq.ifq_maxlen, 0, "maximum routing socket dispatch queue length");
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TUNABLE_INT("net.route.netisr_maxqlen", &rtsintrq.ifq_maxlen);
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struct walkarg {
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int w_tmemsize;
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int w_op, w_arg;
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@ -101,7 +106,7 @@ static void
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rts_init(void)
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{
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IFQ_SET_MAXLEN(&rtsintrq, IFQ_MAXLEN);
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rtsintrq.ifq_maxlen = 256;
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mtx_init(&rtsintrq.ifq_mtx, "rts_inq", NULL, MTX_DEF);
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netisr_register(NETISR_ROUTE, rts_input, &rtsintrq, NETISR_MPSAFE);
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}
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