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| author | ae <ae@FreeBSD.org> | 2014-01-10 09:45:28 +0000 |
|---|---|---|
| committer | ae <ae@FreeBSD.org> | 2014-01-10 09:45:28 +0000 |
| commit | 65169ca8a03275870336017f91b02d8d16abdd24 (patch) | |
| tree | 1b222e329b82d5dfb9aa7f1cc170ef19b4e704c4 /sys/netinet6/in6.c | |
| parent | 2865f87f4a69c49f910445fb5c56eca59e1790ee (diff) | |
| download | FreeBSD-src-65169ca8a03275870336017f91b02d8d16abdd24.zip FreeBSD-src-65169ca8a03275870336017f91b02d8d16abdd24.tar.gz | |
MFC r260151 (by adrian):
Use an RLOCK here instead of an RWLOCK - matching all the other calls
to lla_lookup().
This drastically reduces the very high lock contention when doing parallel
TCP throughput tests (> 1024 sockets) with IPv6.
MFC r260187:
lla_lookup() does modification only when LLE_CREATE is specified.
Thus we can use IF_AFDATA_RLOCK() instead of IF_AFDATA_LOCK() when doing
lla_lookup() without LLE_CREATE flag.
MFC r260217:
Add IF_AFDATA_WLOCK_ASSERT() in case lla_lookup() is called with
LLE_CREATE flag.
Diffstat (limited to 'sys/netinet6/in6.c')
| -rw-r--r-- | sys/netinet6/in6.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/netinet6/in6.c b/sys/netinet6/in6.c index e5c62df..37a41bd 100644 --- a/sys/netinet6/in6.c +++ b/sys/netinet6/in6.c @@ -2627,6 +2627,7 @@ in6_lltable_lookup(struct lltable *llt, u_int flags, if (lle == NULL) { if (!(flags & LLE_CREATE)) return (NULL); + IF_AFDATA_WLOCK_ASSERT(ifp); /* * A route that covers the given address must have * been installed 1st because we are doing a resolution, |
