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| author | Eric W. Biederman <ebiederm@xmission.com> | 2009-05-19 18:27:17 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-21 15:13:39 -0700 |
| commit | d95ed9275edcb8995bda31005bb3f55e087626d7 (patch) | |
| tree | bbaefa252b6e8f7386073ed27fb9c9f3a64cb55f | |
| parent | ca0f31125c5cf0d48f47c2e1a3785a08876a7e87 (diff) | |
| download | linux-3.10-d95ed9275edcb8995bda31005bb3f55e087626d7.tar.gz linux-3.10-d95ed9275edcb8995bda31005bb3f55e087626d7.tar.bz2 linux-3.10-d95ed9275edcb8995bda31005bb3f55e087626d7.zip | |
af_packet: Teach to listen for multiple unicast addresses.
The the PACKET_ADD_MEMBERSHIP and the PACKET_DROP_MEMBERSHIP setsockopt
calls for af_packet already has all of the infrastructure needed to subscribe
to multiple mac addresses. All that is missing is a flag to say that
the address we want to listen on is a unicast address.
So introduce PACKET_MR_UNICAST and wire it up to dev_unicast_add and
dev_unicast_delete.
Additionally I noticed that errors from dev_mc_add were not propagated
from packet_dev_mc so fix that.
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/if_packet.h | 1 | ||||
| -rw-r--r-- | net/packet/af_packet.c | 10 |
2 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h index 5b2badeb949..dea7d6b7cf9 100644 --- a/include/linux/if_packet.h +++ b/include/linux/if_packet.h @@ -145,5 +145,6 @@ struct packet_mreq #define PACKET_MR_MULTICAST 0 #define PACKET_MR_PROMISC 1 #define PACKET_MR_ALLMULTI 2 +#define PACKET_MR_UNICAST 3 #endif diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 766e6b41f7c..c7c5d524967 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1570,9 +1570,9 @@ static int packet_dev_mc(struct net_device *dev, struct packet_mclist *i, switch (i->type) { case PACKET_MR_MULTICAST: if (what > 0) - dev_mc_add(dev, i->addr, i->alen, 0); + return dev_mc_add(dev, i->addr, i->alen, 0); else - dev_mc_delete(dev, i->addr, i->alen, 0); + return dev_mc_delete(dev, i->addr, i->alen, 0); break; case PACKET_MR_PROMISC: return dev_set_promiscuity(dev, what); @@ -1580,6 +1580,12 @@ static int packet_dev_mc(struct net_device *dev, struct packet_mclist *i, case PACKET_MR_ALLMULTI: return dev_set_allmulti(dev, what); break; + case PACKET_MR_UNICAST: + if (what > 0) + return dev_unicast_add(dev, i->addr, i->alen); + else + return dev_unicast_delete(dev, i->addr, i->alen); + break; default:; } return 0; |