From 18c5c0a845b3fd834e6a3f5d7f2cbf336e23e918 Mon Sep 17 00:00:00 2001 From: Fei Qin Date: Fri, 8 Dec 2023 08:03:01 +0200 Subject: nfp: support UDP segmentation offload The device supports UDP hardware segmentation offload, which helps improving the performance. Thus, this patch adds support for UDP segmentation offload from the driver side. Signed-off-by: Fei Qin Signed-off-by: Louis Peens Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/nfd3/dp.c | 9 ++++++--- drivers/net/ethernet/netronome/nfp/nfdk/dp.c | 9 ++++++--- drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 10 ++++++++-- drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h | 1 + 4 files changed, 21 insertions(+), 8 deletions(-) (limited to 'drivers/net/ethernet/netronome') diff --git a/drivers/net/ethernet/netronome/nfp/nfd3/dp.c b/drivers/net/ethernet/netronome/nfp/nfd3/dp.c index 17381bfc15d7..d215efc6cad0 100644 --- a/drivers/net/ethernet/netronome/nfp/nfd3/dp.c +++ b/drivers/net/ethernet/netronome/nfp/nfd3/dp.c @@ -74,7 +74,7 @@ static void nfp_nfd3_tx_tso(struct nfp_net_r_vector *r_vec, struct nfp_nfd3_tx_buf *txbuf, struct nfp_nfd3_tx_desc *txd, struct sk_buff *skb, u32 md_bytes) { - u32 l3_offset, l4_offset, hdrlen; + u32 l3_offset, l4_offset, hdrlen, l4_hdrlen; u16 mss; if (!skb_is_gso(skb)) @@ -83,13 +83,16 @@ nfp_nfd3_tx_tso(struct nfp_net_r_vector *r_vec, struct nfp_nfd3_tx_buf *txbuf, if (!skb->encapsulation) { l3_offset = skb_network_offset(skb); l4_offset = skb_transport_offset(skb); - hdrlen = skb_tcp_all_headers(skb); + l4_hdrlen = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? + sizeof(struct udphdr) : tcp_hdrlen(skb); } else { l3_offset = skb_inner_network_offset(skb); l4_offset = skb_inner_transport_offset(skb); - hdrlen = skb_inner_tcp_all_headers(skb); + l4_hdrlen = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? + sizeof(struct udphdr) : inner_tcp_hdrlen(skb); } + hdrlen = l4_offset + l4_hdrlen; txbuf->pkt_cnt = skb_shinfo(skb)->gso_segs; txbuf->real_len += hdrlen * (txbuf->pkt_cnt - 1); diff --git a/drivers/net/ethernet/netronome/nfp/nfdk/dp.c b/drivers/net/ethernet/netronome/nfp/nfdk/dp.c index 8d78c6faefa8..dae5af7d1845 100644 --- a/drivers/net/ethernet/netronome/nfp/nfdk/dp.c +++ b/drivers/net/ethernet/netronome/nfp/nfdk/dp.c @@ -40,20 +40,23 @@ static __le64 nfp_nfdk_tx_tso(struct nfp_net_r_vector *r_vec, struct nfp_nfdk_tx_buf *txbuf, struct sk_buff *skb) { - u32 segs, hdrlen, l3_offset, l4_offset; + u32 segs, hdrlen, l3_offset, l4_offset, l4_hdrlen; struct nfp_nfdk_tx_desc txd; u16 mss; if (!skb->encapsulation) { l3_offset = skb_network_offset(skb); l4_offset = skb_transport_offset(skb); - hdrlen = skb_tcp_all_headers(skb); + l4_hdrlen = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? + sizeof(struct udphdr) : tcp_hdrlen(skb); } else { l3_offset = skb_inner_network_offset(skb); l4_offset = skb_inner_transport_offset(skb); - hdrlen = skb_inner_tcp_all_headers(skb); + l4_hdrlen = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? + sizeof(struct udphdr) : inner_tcp_hdrlen(skb); } + hdrlen = l4_offset + l4_hdrlen; segs = skb_shinfo(skb)->gso_segs; mss = skb_shinfo(skb)->gso_size & NFDK_DESC_TX_MSS_MASK; diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index dcd27ba2a74c..3b3210d823e8 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -2116,7 +2116,10 @@ nfp_net_features_check(struct sk_buff *skb, struct net_device *dev, if (skb_is_gso(skb)) { u32 hdrlen; - hdrlen = skb_inner_tcp_all_headers(skb); + if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) + hdrlen = skb_inner_transport_offset(skb) + sizeof(struct udphdr); + else + hdrlen = skb_inner_tcp_all_headers(skb); /* Assume worst case scenario of having longest possible * metadata prepend - 8B @@ -2419,7 +2422,7 @@ void nfp_net_info(struct nfp_net *nn) nn->fw_ver.extend, nn->fw_ver.class, nn->fw_ver.major, nn->fw_ver.minor, nn->max_mtu); - nn_info(nn, "CAP: %#x %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", + nn_info(nn, "CAP: %#x %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n", nn->cap, nn->cap & NFP_NET_CFG_CTRL_PROMISC ? "PROMISC " : "", nn->cap & NFP_NET_CFG_CTRL_L2BC ? "L2BCFILT " : "", @@ -2448,6 +2451,7 @@ void nfp_net_info(struct nfp_net *nn) "RXCSUM_COMPLETE " : "", nn->cap & NFP_NET_CFG_CTRL_LIVE_ADDR ? "LIVE_ADDR " : "", nn->cap_w1 & NFP_NET_CFG_CTRL_MCAST_FILTER ? "MULTICAST_FILTER " : "", + nn->cap_w1 & NFP_NET_CFG_CTRL_USO ? "USO " : "", nfp_app_extra_cap(nn->app, nn)); } @@ -2696,6 +2700,8 @@ static void nfp_net_netdev_init(struct nfp_net *nn) if ((nn->cap & NFP_NET_CFG_CTRL_LSO && nn->fw_ver.major > 2) || nn->cap & NFP_NET_CFG_CTRL_LSO2) { netdev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6; + if (nn->cap_w1 & NFP_NET_CFG_CTRL_USO) + netdev->hw_features |= NETIF_F_GSO_UDP_L4; nn->dp.ctrl |= nn->cap & NFP_NET_CFG_CTRL_LSO2 ?: NFP_NET_CFG_CTRL_LSO; } diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h index eaf4d3c499d1..634c63c7f7eb 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ctrl.h @@ -270,6 +270,7 @@ #define NFP_NET_CFG_CTRL_MCAST_FILTER (0x1 << 2) /* Multicast Filter */ #define NFP_NET_CFG_CTRL_FREELIST_EN (0x1 << 6) /* Freelist enable flag bit */ #define NFP_NET_CFG_CTRL_FLOW_STEER (0x1 << 8) /* Flow steering */ +#define NFP_NET_CFG_CTRL_USO (0x1 << 16) /* UDP segmentation offload */ #define NFP_NET_CFG_CAP_WORD1 0x00a4 -- cgit v1.2.3