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authorBrett Creeley <brett.creeley@intel.com>2021-03-02 10:12:13 -0800
committerTony Nguyen <anthony.l.nguyen@intel.com>2021-04-22 09:26:22 -0700
commitc91a4f9feb67a199c27c2fe4df98ef9a49ab8ba0 (patch)
tree8dcd3d7a2d2f18cecb25caf297571325e4ddf0d4
parent142da08c4dc0afd07f9136b4812d5386bd6e1717 (diff)
iavf: add support for UDP Segmentation Offload
Add code to support UDP segmentation offload (USO) for hardware that supports it. Suggested-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Brett Creeley <brett.creeley@intel.com> Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
-rw-r--r--drivers/net/ethernet/intel/iavf/iavf_main.c2
-rw-r--r--drivers/net/ethernet/intel/iavf/iavf_txrx.c15
-rw-r--r--drivers/net/ethernet/intel/iavf/iavf_virtchnl.c1
3 files changed, 14 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index a3268c894d85..6cd6b9dfe5d4 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -3542,6 +3542,8 @@ int iavf_process_config(struct iavf_adapter *adapter)
/* Enable cloud filter if ADQ is supported */
if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)
hw_features |= NETIF_F_HW_TC;
+ if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO)
+ hw_features |= NETIF_F_GSO_UDP_L4;
netdev->hw_features |= hw_features;
diff --git a/drivers/net/ethernet/intel/iavf/iavf_txrx.c b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
index d6cba53a3a21..3525eab8e9f9 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_txrx.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
@@ -1905,13 +1905,20 @@ static int iavf_tso(struct iavf_tx_buffer *first, u8 *hdr_len,
/* determine offset of inner transport header */
l4_offset = l4.hdr - skb->data;
-
/* remove payload length from inner checksum */
paylen = skb->len - l4_offset;
- csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen));
- /* compute length of segmentation header */
- *hdr_len = (l4.tcp->doff * 4) + l4_offset;
+ if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
+ csum_replace_by_diff(&l4.udp->check,
+ (__force __wsum)htonl(paylen));
+ /* compute length of UDP segmentation header */
+ *hdr_len = (u8)sizeof(l4.udp) + l4_offset;
+ } else {
+ csum_replace_by_diff(&l4.tcp->check,
+ (__force __wsum)htonl(paylen));
+ /* compute length of TCP segmentation header */
+ *hdr_len = (u8)((l4.tcp->doff * 4) + l4_offset);
+ }
/* pull values out of skb_shinfo */
gso_size = skb_shinfo(skb)->gso_size;
diff --git a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
index 3069092468b2..9aaade0aae4c 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c
@@ -140,6 +140,7 @@ int iavf_send_vf_config_msg(struct iavf_adapter *adapter)
VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM |
VIRTCHNL_VF_OFFLOAD_REQ_QUEUES |
VIRTCHNL_VF_OFFLOAD_ADQ |
+ VIRTCHNL_VF_OFFLOAD_USO |
VIRTCHNL_VF_OFFLOAD_FDIR_PF |
VIRTCHNL_VF_CAP_ADV_LINK_SPEED;