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| author | Ajit Khaparde <ajit.khaparde@emulex.com> | 2013-04-24 11:53:08 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-04-24 19:37:22 -0400 |
| commit | d2cb6ce7306997c753976b65bf81495e1efe7074 (patch) | |
| tree | a0af739096883f67669024887bd02471f90e4cc4 /drivers | |
| parent | bc0c3405abbb7d7115df824c0e41422396923c1f (diff) | |
| download | linux-d2cb6ce7306997c753976b65bf81495e1efe7074.tar.gz linux-d2cb6ce7306997c753976b65bf81495e1efe7074.tar.bz2 linux-d2cb6ce7306997c753976b65bf81495e1efe7074.zip | |
be2net: Fix PVID tag offload for packets with inline VLAN tag.
BE3 HW in UMC mode could wrongly double tag a packet with PVID
when the packet already has a inlined VLAN tag.
In UMC mode, When HW finds that a packet is already VLAN tagged
PVID should not be inserted into the packet.
To fix this use the FW hack to instruct the HW to skip PVID tagging.
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be_main.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 21109b59fcfc..1232e9164bf1 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -834,6 +834,7 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, u32 start = txq->head, eth_hdr_len; bool dummy_wrb, stopped = false; bool skip_hw_vlan = false; + struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data; eth_hdr_len = ntohs(skb->protocol) == ETH_P_8021Q ? VLAN_ETH_HLEN : ETH_HLEN; @@ -846,6 +847,13 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, pskb_trim(skb, eth_hdr_len + ntohs(ip->tot_len)); } + /* If vlan tag is already inlined in the packet, skip HW VLAN + * tagging in UMC mode + */ + if ((adapter->function_mode & UMC_ENABLED) && + veh->h_vlan_proto == htons(ETH_P_8021Q)) + skip_hw_vlan = true; + /* HW has a bug wherein it will calculate CSUM for VLAN * pkts even though it is disabled. * Manually insert VLAN in pkt. |