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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2006-06-17 22:06:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-06-17 22:06:45 -0700 |
| commit | 2c6cc0d8539f121c3c75aa3641c19b67e8723379 (patch) | |
| tree | dbc8cc8a5b3fd83734dc6b80b614136e663a017e /net/bridge/br_if.c | |
| parent | 8648b3053bff39a7ee4c711d74268079c928a657 (diff) | |
| download | linux-3.10-2c6cc0d8539f121c3c75aa3641c19b67e8723379.tar.gz linux-3.10-2c6cc0d8539f121c3c75aa3641c19b67e8723379.tar.bz2 linux-3.10-2c6cc0d8539f121c3c75aa3641c19b67e8723379.zip | |
[BRIDGE]: Add support for NETIF_F_HW_CSUM devices
As it is the bridge will only ever declare NETIF_F_IP_CSUM even if all
its constituent devices support NETIF_F_HW_CSUM. This patch fixes
this by supporting the first one out of NETIF_F_NO_CSUM,
NETIF_F_HW_CSUM, and NETIF_F_IP_CSUM that is supported by all
constituent devices.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_if.c')
| -rw-r--r-- | net/bridge/br_if.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index 90c95f59dc8..fdec773f5b5 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -372,11 +372,17 @@ void br_features_recompute(struct net_bridge *br) struct net_bridge_port *p; unsigned long features, checksum; - features = br->feature_mask &~ NETIF_F_IP_CSUM; - checksum = br->feature_mask & NETIF_F_IP_CSUM; + checksum = br->feature_mask & NETIF_F_ALL_CSUM ? NETIF_F_NO_CSUM : 0; + features = br->feature_mask & ~NETIF_F_ALL_CSUM; list_for_each_entry(p, &br->port_list, list) { - if (!(p->dev->features & NETIF_F_ALL_CSUM)) + if (checksum & NETIF_F_NO_CSUM && + !(p->dev->features & NETIF_F_NO_CSUM)) + checksum ^= NETIF_F_NO_CSUM | NETIF_F_HW_CSUM; + if (checksum & NETIF_F_HW_CSUM && + !(p->dev->features & NETIF_F_HW_CSUM)) + checksum ^= NETIF_F_HW_CSUM | NETIF_F_IP_CSUM; + if (!(p->dev->features & NETIF_F_IP_CSUM)) checksum = 0; features &= p->dev->features; } |