Author: emaste
Date: Thu May 3 01:41:12 2012
New Revision: 234936
URL: http://svn.freebsd.org/changeset/base/234936
Log:
Relax restriction on direct tx to child ports
Lagg(4) restricts the type of packet that may be sent directly to a child
port, to avoid undesired output from accidental misconfiguration.
Previously only ETHERTYPE_PAE was permitted.
BPF writes to a lagg(4) child port are presumably intentional, so just
allow them, while still blocking other packets that should take the
aggregation path.
PR: kern/138620
Approved by: thompsa@
Modified:
head/sys/net/if_lagg.c
Modified: head/sys/net/if_lagg.c
==============================================================================
--- head/sys/net/if_lagg.c Wed May 2 21:50:13 2012 (r234935)
+++ head/sys/net/if_lagg.c Thu May 3 01:41:12 2012 (r234936)
@@ -764,28 +764,18 @@ fallback:
return (EINVAL);
}
+/*
+ * For direct output to child ports.
+ */
static int
lagg_port_output(struct ifnet *ifp, struct mbuf *m,
struct sockaddr *dst, struct route *ro)
{
struct lagg_port *lp = ifp->if_lagg;
- struct ether_header *eh;
- short type = 0;
switch (dst->sa_family) {
case pseudo_AF_HDRCMPLT:
case AF_UNSPEC:
- eh = (struct ether_header *)dst->sa_data;
- type = eh->ether_type;
- break;
- }
-
- /*
- * Only allow ethernet types required to initiate or maintain the link,
- * aggregated frames take a different path.
- */
- switch (ntohs(type)) {
- case ETHERTYPE_PAE: /* EAPOL PAE/802.1x */
return ((*lp->lp_output)(ifp, m, dst, ro));
}
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