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-rw-r--r--sys/netinet/tcp_usrreq.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c
index a2cf32f1f93..086fd603e19 100644
--- a/sys/netinet/tcp_usrreq.c
+++ b/sys/netinet/tcp_usrreq.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tcp_usrreq.c,v 1.172 2019/07/12 19:43:51 bluhm Exp $ */
+/* $OpenBSD: tcp_usrreq.c,v 1.173 2020/06/18 14:52:51 mpi Exp $ */
/* $NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $ */
/*
@@ -1061,6 +1061,19 @@ tcp_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
case TCPCTL_STATS:
return (tcp_sysctl_tcpstat(oldp, oldlenp, newp));
+ case TCPCTL_SYN_BUCKET_LIMIT:
+ NET_LOCK();
+ nval = tcp_syn_bucket_limit;
+ error = sysctl_int(oldp, oldlenp, newp, newlen, &nval);
+ if (!error && nval != tcp_syn_bucket_limit) {
+ if (nval > 0)
+ tcp_syn_bucket_limit = nval;
+ else
+ error = EINVAL;
+ }
+ NET_UNLOCK();
+ return (error);
+
case TCPCTL_SYN_USE_LIMIT:
NET_LOCK();
error = sysctl_int(oldp, oldlenp, newp, newlen,