diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2013-05-10 16:51:33 -0700 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2013-06-24 19:58:30 +0100 |
| commit | 3ea84c5492e19daa478fad42f97b7dda9289e71c (patch) | |
| tree | 0c689258b20bfba7f93a180a101e752501f8ff51 /drivers/net | |
| parent | 62ebac926b7a5cd7cb6dc02a8d6fa925fa206a23 (diff) | |
sfc: Enable accelerated RFS on vlans
As far as I know, the hardware doesn't support matching on both IP
fields and vlan tag, but it can at least match on the IP fields.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/sfc/filter.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/filter.c b/drivers/net/ethernet/sfc/filter.c index 2397f0e8d3eb..b74a60ab9ac7 100644 --- a/drivers/net/ethernet/sfc/filter.c +++ b/drivers/net/ethernet/sfc/filter.c @@ -1185,8 +1185,21 @@ int efx_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb, nhoff = skb_network_offset(skb); - if (skb->protocol != htons(ETH_P_IP)) + if (skb->protocol == htons(ETH_P_8021Q)) { + EFX_BUG_ON_PARANOID(skb_headlen(skb) < + nhoff + sizeof(struct vlan_hdr)); + if (((const struct vlan_hdr *)skb->data + nhoff)-> + h_vlan_encapsulated_proto != htons(ETH_P_IP)) + return -EPROTONOSUPPORT; + + /* This is IP over 802.1q VLAN. We can't filter on the + * IP 5-tuple and the vlan together, so just strip the + * vlan header and filter on the IP part. + */ + nhoff += sizeof(struct vlan_hdr); + } else if (skb->protocol != htons(ETH_P_IP)) { return -EPROTONOSUPPORT; + } /* RFS must validate the IP header length before calling us */ EFX_BUG_ON_PARANOID(skb_headlen(skb) < nhoff + sizeof(*ip)); |