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authorWANG Cong <xiyou.wangcong@gmail.com>2014-02-11 17:21:26 -0800
committerDavid S. Miller <davem@davemloft.net>2014-02-13 17:46:49 -0500
commit25f929fbff0d1bcebf2e92656d33025cd330cbf8 (patch)
tree20263225506bf0be6faaad37627cb062df478c65 /drivers/net/loopback.c
parentMerge branch 'i40e' (diff)
downloadlinux-dev-25f929fbff0d1bcebf2e92656d33025cd330cbf8.tar.xz
linux-dev-25f929fbff0d1bcebf2e92656d33025cd330cbf8.zip
net: allow setting mac address of loopback device
We are trying to mirror the local traffic from lo to eth0, allowing setting mac address of lo to eth0 would make the ether addresses in these packets correct, so that we don't have to modify the ether header again. Since usually no one cares about its mac address (all-zero), it is safe to allow those who care to set its mac address. Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Eric Dumazet <edumazet@google.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/loopback.c')
-rw-r--r--drivers/net/loopback.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index c5011e078e1b..e7c1d5f8ab51 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -160,6 +160,7 @@ static const struct net_device_ops loopback_ops = {
.ndo_init = loopback_dev_init,
.ndo_start_xmit= loopback_xmit,
.ndo_get_stats64 = loopback_get_stats64,
+ .ndo_set_mac_address = eth_mac_addr,
};
/*
@@ -174,6 +175,7 @@ static void loopback_setup(struct net_device *dev)
dev->tx_queue_len = 0;
dev->type = ARPHRD_LOOPBACK; /* 0x0001*/
dev->flags = IFF_LOOPBACK;
+ dev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
dev->hw_features = NETIF_F_ALL_TSO | NETIF_F_UFO;
dev->features = NETIF_F_SG | NETIF_F_FRAGLIST