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| author | Jiri Pirko <jiri@resnulli.us> | 2012-07-18 07:39:38 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-07-18 11:28:46 -0700 |
| commit | dc9059512c09d09b99de6cd3a8bc842507934cbb (patch) | |
| tree | b74ea66d7e0b80a359082e080a8ff4c5d0504970 /drivers/net/team | |
| parent | f150bd7f8cf742c4cdd0c929aa494ef72f7f5b13 (diff) | |
| download | linux-3.10-dc9059512c09d09b99de6cd3a8bc842507934cbb.tar.gz linux-3.10-dc9059512c09d09b99de6cd3a8bc842507934cbb.tar.bz2 linux-3.10-dc9059512c09d09b99de6cd3a8bc842507934cbb.zip | |
team: refine IFF_XMIT_DST_RELEASE capability
Cloned patch of Eric Dumazet for bonding.
Some workloads greatly benefit of IFF_XMIT_DST_RELEASE capability
on output net device, avoiding dirtying dst refcount.
team currently disables IFF_XMIT_DST_RELEASE unconditionally.
If all ports have the IFF_XMIT_DST_RELEASE bit set, then
team dev can also have it in its priv_flags.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/team')
| -rw-r--r-- | drivers/net/team/team.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 1a13470dee0..813e1319095 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -733,12 +733,14 @@ static void __team_compute_features(struct team *team) struct team_port *port; u32 vlan_features = TEAM_VLAN_FEATURES; unsigned short max_hard_header_len = ETH_HLEN; + unsigned int flags, dst_release_flag = IFF_XMIT_DST_RELEASE; list_for_each_entry(port, &team->port_list, list) { vlan_features = netdev_increment_features(vlan_features, port->dev->vlan_features, TEAM_VLAN_FEATURES); + dst_release_flag &= port->dev->priv_flags; if (port->dev->hard_header_len > max_hard_header_len) max_hard_header_len = port->dev->hard_header_len; } @@ -746,6 +748,9 @@ static void __team_compute_features(struct team *team) team->dev->vlan_features = vlan_features; team->dev->hard_header_len = max_hard_header_len; + flags = team->dev->priv_flags & ~IFF_XMIT_DST_RELEASE; + team->dev->priv_flags = flags | dst_release_flag; + netdev_change_features(team->dev); } |