@@ -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.
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> --- drivers/net/ethernet/emulex/benet/be_main.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)