From 3fd8ed5639589846baec0dc0ab312cdf709094f0 Mon Sep 17 00:00:00 2001 From: Josh Hunt Date: Fri, 11 Oct 2019 12:53:40 -0400 Subject: [PATCH] i40e: Add UDP segmentation offload support Based on a series from Alexander Duyck this change adds UDP segmentation offload support to the i40e driver. CC: Alexander Duyck CC: Willem de Bruijn Signed-off-by: Josh Hunt Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_main.c | 1 + drivers/net/ethernet/intel/i40e/i40e_txrx.c | 12 +++++++++--- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 141575ada5889..b3d7edbb1389e 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -12931,6 +12931,7 @@ static int i40e_config_netdev(struct i40e_vsi *vsi) NETIF_F_GSO_IPXIP6 | NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_UDP_TUNNEL_CSUM | + NETIF_F_GSO_UDP_L4 | NETIF_F_SCTP_CRC | NETIF_F_RXHASH | NETIF_F_RXCSUM | diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index e3f29dc8b290a..b8496037ef7ff 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2960,10 +2960,16 @@ static int i40e_tso(struct i40e_tx_buffer *first, u8 *hdr_len, /* 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 segmentation header */ + *hdr_len = sizeof(*l4.udp) + l4_offset; + } else { + csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen)); + /* compute length of segmentation header */ + *hdr_len = (l4.tcp->doff * 4) + l4_offset; + } /* pull values out of skb_shinfo */ gso_size = skb_shinfo(skb)->gso_size; -- 2.39.5