diff options
| author | Dhananjay Phadke <dhananjay@netxen.com> | 2009-07-26 20:07:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-07-27 11:15:31 -0700 |
| commit | 028afe719855a157e32450c36b7a12e1f9e85abe (patch) | |
| tree | 5aac51f5fd2def91942bf7b9b46040aeb7d4b503 /drivers/net/netxen/netxen_nic_main.c | |
| parent | 9b08beba2d1bf7e4598deba2800a9ea5e5c3a282 (diff) | |
| download | lwn-028afe719855a157e32450c36b7a12e1f9e85abe.tar.gz lwn-028afe719855a157e32450c36b7a12e1f9e85abe.zip | |
netxen: add vlan tx acceleration support
Enable vlan tx acceleration for NX3031 if firmware advertises
capability.
Signed-off-by: Amit Kumar Salecha <amit@netxen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netxen/netxen_nic_main.c')
| -rw-r--r-- | drivers/net/netxen/netxen_nic_main.c | 52 |
1 files changed, 47 insertions, 5 deletions
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c index 43a99f6a23df..ff7ee9c43ef5 100644 --- a/drivers/net/netxen/netxen_nic_main.c +++ b/drivers/net/netxen/netxen_nic_main.c @@ -1016,6 +1016,9 @@ netxen_setup_netdev(struct netxen_adapter *adapter, netdev->vlan_features |= NETIF_F_HIGHDMA; } + if (adapter->capabilities & NX_FW_CAPABILITY_FVLANTX) + netdev->features |= (NETIF_F_HW_VLAN_TX); + netdev->irq = adapter->msix_entries[0].vector; err = netxen_napi_add(adapter, netdev); @@ -1333,15 +1336,24 @@ netxen_tso_check(struct net_device *netdev, { u8 opcode = TX_ETHER_PKT; __be16 protocol = skb->protocol; - u16 flags = 0; + u16 flags = 0, vid = 0; u32 producer; - int copied, offset, copy_len, hdr_len = 0, tso = 0; + int copied, offset, copy_len, hdr_len = 0, tso = 0, vlan_oob = 0; struct cmd_desc_type0 *hwdesc; + struct vlan_ethhdr *vh; if (protocol == cpu_to_be16(ETH_P_8021Q)) { - struct vlan_ethhdr *vh = (struct vlan_ethhdr *)skb->data; + + vh = (struct vlan_ethhdr *)skb->data; protocol = vh->h_vlan_encapsulated_proto; flags = FLAGS_VLAN_TAGGED; + + } else if (vlan_tx_tag_present(skb)) { + + flags = FLAGS_VLAN_OOB; + vid = vlan_tx_tag_get(skb); + netxen_set_tx_vlan_tci(first_desc, vid); + vlan_oob = 1; } if ((netdev->features & (NETIF_F_TSO | NETIF_F_TSO6)) && @@ -1351,6 +1363,13 @@ netxen_tso_check(struct net_device *netdev, first_desc->mss = cpu_to_le16(skb_shinfo(skb)->gso_size); first_desc->total_hdr_length = hdr_len; + if (vlan_oob) { + first_desc->total_hdr_length += VLAN_HLEN; + first_desc->tcp_hdr_offset = VLAN_HLEN; + first_desc->ip_hdr_offset = VLAN_HLEN; + /* Only in case of TSO on vlan device */ + flags |= FLAGS_VLAN_TAGGED; + } opcode = (protocol == cpu_to_be16(ETH_P_IPV6)) ? TX_TCP_LSO6 : TX_TCP_LSO; @@ -1375,8 +1394,9 @@ netxen_tso_check(struct net_device *netdev, opcode = TX_UDPV6_PKT; } } - first_desc->tcp_hdr_offset = skb_transport_offset(skb); - first_desc->ip_hdr_offset = skb_network_offset(skb); + + first_desc->tcp_hdr_offset += skb_transport_offset(skb); + first_desc->ip_hdr_offset += skb_network_offset(skb); netxen_set_tx_flags_opcode(first_desc, flags, opcode); if (!tso) @@ -1389,6 +1409,28 @@ netxen_tso_check(struct net_device *netdev, copied = 0; offset = 2; + if (vlan_oob) { + /* Create a TSO vlan header template for firmware */ + + hwdesc = &tx_ring->desc_head[producer]; + tx_ring->cmd_buf_arr[producer].skb = NULL; + + copy_len = min((int)sizeof(struct cmd_desc_type0) - offset, + hdr_len + VLAN_HLEN); + + vh = (struct vlan_ethhdr *)((char *)hwdesc + 2); + skb_copy_from_linear_data(skb, vh, 12); + vh->h_vlan_proto = htons(ETH_P_8021Q); + vh->h_vlan_TCI = htons(vid); + skb_copy_from_linear_data_offset(skb, 12, + (char *)vh + 16, copy_len - 16); + + copied = copy_len; + offset = 0; + + producer = get_next_index(producer, tx_ring->num_desc); + } + while (copied < hdr_len) { copy_len = min((int)sizeof(struct cmd_desc_type0) - offset, |