diff options
| author | Anjali Singhai Jain <anjali.singhai@intel.com> | 2015-06-05 12:20:31 -0400 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-08-05 16:53:45 -0700 |
| commit | 527274c78ea7e0cad8b44ea25509c42aa605634e (patch) | |
| tree | 7d38cd0ddc3fac047f8a2d82fddd772be8911439 /drivers/net/ethernet/intel/i40e/i40e_txrx.c | |
| parent | 8e0764b4d6be42459b6f517e199b8c7df43cc15c (diff) | |
i40e/i40evf: Add TX/RX outer UDP checksum support for X722
X722 supports offloading of outer UDP TX and RX checksum for tunneled
packets. This patch exposes the support and leaves it enabled by
default.
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index 7d0a5ea086567..57dc5d23a8086 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -1429,7 +1429,8 @@ static inline void i40e_rx_checksum(struct i40e_vsi *vsi, * so the total length of IPv4 header is IHL*4 bytes * The UDP_0 bit *may* bet set if the *inner* header is UDP */ - if (ipv4_tunnel) { + if (!(vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE) && + (ipv4_tunnel)) { skb->transport_header = skb->mac_header + sizeof(struct ethhdr) + (ip_hdr(skb)->ihl * 4); @@ -2301,11 +2302,15 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags, struct iphdr *this_ip_hdr; u32 network_hdr_len; u8 l4_hdr = 0; + struct udphdr *oudph; + struct iphdr *oiph; u32 l4_tunnel = 0; if (skb->encapsulation) { switch (ip_hdr(skb)->protocol) { case IPPROTO_UDP: + oudph = udp_hdr(skb); + oiph = ip_hdr(skb); l4_tunnel = I40E_TXD_CTX_UDP_TUNNELING; *tx_flags |= I40E_TX_FLAGS_VXLAN_TUNNEL; break; @@ -2342,6 +2347,15 @@ static void i40e_tx_enable_csum(struct sk_buff *skb, u32 *tx_flags, *tx_flags &= ~I40E_TX_FLAGS_IPV4; *tx_flags |= I40E_TX_FLAGS_IPV6; } + if ((tx_ring->flags & I40E_TXR_FLAGS_OUTER_UDP_CSUM) && + (l4_tunnel == I40E_TXD_CTX_UDP_TUNNELING) && + (*cd_tunneling & I40E_TXD_CTX_QW0_EXT_IP_MASK)) { + oudph->check = ~csum_tcpudp_magic(oiph->saddr, + oiph->daddr, + (skb->len - skb_transport_offset(skb)), + IPPROTO_UDP, 0); + *cd_tunneling |= I40E_TXD_CTX_QW0_L4T_CS_MASK; + } } else { network_hdr_len = skb_network_header_len(skb); this_ip_hdr = ip_hdr(skb); |