diff options
| author | Ankit Garg <nktgrg@google.com> | 2026-03-06 22:48:16 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-03-09 19:17:52 -0700 |
| commit | 014c607f86abc903d7bf46e13373d89392e371fe (patch) | |
| tree | fa21841abf628dcb92aed500f0cb231f04e07e99 /drivers/net/ethernet/google | |
| parent | dc9c9193c7c19a0163552da3a73a1706b7faea12 (diff) | |
gve: add support for UDP GSO for DQO format
Enable support for UDP GSO when using DQO format. Advertise the feature
flag during device initialization and enable offload by default.
Signed-off-by: Ankit Garg <nktgrg@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Harshitha Ramamurthy <hramamurthy@google.com>
Link: https://patch.msgid.link/20260306224816.3391551-1-hramamurthy@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/google')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_adminq.c | 8 | ||||
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_tx_dqo.c | 33 |
2 files changed, 29 insertions, 12 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c index 129f3e11a442..08587bf40ed4 100644 --- a/drivers/net/ethernet/google/gve/gve_adminq.c +++ b/drivers/net/ethernet/google/gve/gve_adminq.c @@ -1117,10 +1117,12 @@ int gve_adminq_describe_device(struct gve_priv *priv) gve_set_default_rss_sizes(priv); - /* DQO supports HW-GRO. */ + /* DQO supports HW-GRO and UDP_GSO */ if (gve_is_dqo(priv)) { - priv->dev->hw_features |= NETIF_F_GRO_HW; - priv->dev->features |= NETIF_F_GRO_HW; + u64 additional_features = NETIF_F_GRO_HW | NETIF_F_GSO_UDP_L4; + + priv->dev->hw_features |= additional_features; + priv->dev->features |= additional_features; } priv->max_registered_pages = diff --git a/drivers/net/ethernet/google/gve/gve_tx_dqo.c b/drivers/net/ethernet/google/gve/gve_tx_dqo.c index f33035018b89..80ab0a449ff5 100644 --- a/drivers/net/ethernet/google/gve/gve_tx_dqo.c +++ b/drivers/net/ethernet/google/gve/gve_tx_dqo.c @@ -570,9 +570,11 @@ static void gve_tx_fill_pkt_desc_dqo(struct gve_tx_ring *tx, u32 *desc_idx, */ static int gve_prep_tso(struct sk_buff *skb) { + struct skb_shared_info *shinfo = skb_shinfo(skb); + u32 paylen, l4_start; struct tcphdr *tcp; + struct udphdr *udp; int header_len; - u32 paylen; int err; /* Note: HW requires MSS (gso_size) to be <= 9728 and the total length @@ -583,21 +585,34 @@ static int gve_prep_tso(struct sk_buff *skb) * - Kernel will not produce a TSO larger than 64k */ - if (unlikely(skb_shinfo(skb)->gso_size < GVE_TX_MIN_TSO_MSS_DQO)) + if (unlikely(shinfo->gso_size < GVE_TX_MIN_TSO_MSS_DQO)) return -1; - if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))) - return -EINVAL; - /* Needed because we will modify header. */ err = skb_cow_head(skb, 0); if (err < 0) return err; - tcp = tcp_hdr(skb); - paylen = skb->len - skb_transport_offset(skb); - csum_replace_by_diff(&tcp->check, (__force __wsum)htonl(paylen)); - header_len = skb_tcp_all_headers(skb); + l4_start = skb_transport_offset(skb); + paylen = skb->len - l4_start; + + switch (shinfo->gso_type) { + case SKB_GSO_TCPV4: + case SKB_GSO_TCPV6: + tcp = tcp_hdr(skb); + csum_replace_by_diff(&tcp->check, + (__force __wsum)htonl(paylen)); + header_len = skb_tcp_all_headers(skb); + break; + case SKB_GSO_UDP_L4: + udp = udp_hdr(skb); + csum_replace_by_diff(&udp->check, + (__force __wsum)htonl(paylen)); + header_len = sizeof(struct udphdr) + l4_start; + break; + default: + return -EINVAL; + } if (unlikely(header_len > GVE_TX_MAX_HDR_SIZE_DQO)) return -EINVAL; |