Author: glebius
Date: Thu Jan 23 01:47:43 2020
New Revision: 357012
URL: https://svnweb.freebsd.org/changeset/base/357012
Log:
Stop entering the network epoch in ether_input(), unless driver
is marked with IFF_NEEDSEPOCH.
Modified:
head/sys/net/if_ethersubr.c
Modified: head/sys/net/if_ethersubr.c
==============================================================================
--- head/sys/net/if_ethersubr.c Thu Jan 23 01:46:05 2020 (r357011)
+++ head/sys/net/if_ethersubr.c Thu Jan 23 01:47:43 2020 (r357012)
@@ -809,7 +809,8 @@ ether_input(struct ifnet *ifp, struct mbuf *m)
* them up. This allows the drivers to amortize the receive lock.
*/
CURVNET_SET_QUIET(ifp->if_vnet);
- NET_EPOCH_ENTER(et);
+ if (__predict_false(ifp->if_flags & IFF_NEEDSEPOCH))
+ NET_EPOCH_ENTER(et);
while (m) {
mn = m->m_nextpkt;
m->m_nextpkt = NULL;
@@ -824,7 +825,8 @@ ether_input(struct ifnet *ifp, struct mbuf *m)
netisr_dispatch(NETISR_ETHER, m);
m = mn;
}
- NET_EPOCH_EXIT(et);
+ if (__predict_false(ifp->if_flags & IFF_NEEDSEPOCH))
+ NET_EPOCH_EXIT(et);
CURVNET_RESTORE();
}
_______________________________________________
svn-src-head@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
