Commit feeef68f authored by Michael Chan's avatar Michael Chan Committed by Jakub Kicinski
Browse files

bnxt_en: Add support for UDP GSO on 5760X chips 



The new 5760X chips supports UDP GSO.  Tested using udpgso_bench_tx.

Reviewed-by: default avatarAndy Gospodarek <andrew.gospodarek@broadcom.com>
Reviewed-by: default avatarSomnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: default avatarMichael Chan <michael.chan@broadcom.com>
Link: https://lore.kernel.org/r/20231212005122.2401-12-michael.chan@broadcom.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 6ce30622

drivers/net/ethernet/broadcom/bnxt/bnxt.c

+18 −3
Original line number Diff line number Diff line
@@ -587,12 +587,21 @@ static netdev_tx_t bnxt_start_xmit(struct sk_buff *skb, struct net_device *dev) 


	txbd1->tx_bd_hsize_lflags = lflags;

	if (skb_is_gso(skb)) {

		bool udp_gso = !!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4);

		u32 hdr_len;



		if (skb->encapsulation)

			hdr_len = skb_inner_tcp_all_headers(skb);

		if (skb->encapsulation) {

			if (udp_gso)

				hdr_len = skb_inner_transport_offset(skb) +

					  sizeof(struct udphdr);

			else

				hdr_len = skb_inner_tcp_all_headers(skb);

		} else if (udp_gso) {

			hdr_len = skb_transport_offset(skb) +

				  sizeof(struct udphdr);

		} else {

			hdr_len = skb_tcp_all_headers(skb);

		}



		txbd1->tx_bd_hsize_lflags |= cpu_to_le32(TX_BD_FLAGS_LSO |

					TX_BD_FLAGS_T_IPID |
@@ -8345,6 +8354,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp) 
	flags_ext2 = le32_to_cpu(resp->flags_ext2);

	if (flags_ext2 & FUNC_QCAPS_RESP_FLAGS_EXT2_RX_ALL_PKTS_TIMESTAMPS_SUPPORTED)

		bp->fw_cap |= BNXT_FW_CAP_RX_ALL_PKT_TS;

	if (flags_ext2 & FUNC_QCAPS_RESP_FLAGS_EXT2_UDP_GSO_SUPPORTED)

		bp->flags |= BNXT_FLAG_UDP_GSO_CAP;



	bp->tx_push_thresh = 0;

	if ((flags & FUNC_QCAPS_RESP_FLAGS_PUSH_MODE_SUPPORTED) &&
@@ -14351,6 +14362,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
			   NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_GRE_CSUM |

			   NETIF_F_GSO_PARTIAL | NETIF_F_RXHASH |

			   NETIF_F_RXCSUM | NETIF_F_GRO;

	if (bp->flags & BNXT_FLAG_UDP_GSO_CAP)

		dev->hw_features |= NETIF_F_GSO_UDP_L4;



	if (BNXT_SUPPORTS_TPA(bp))

		dev->hw_features |= NETIF_F_LRO;
@@ -14361,6 +14374,8 @@ static int bnxt_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 
			NETIF_F_GSO_UDP_TUNNEL | NETIF_F_GSO_GRE |

			NETIF_F_GSO_UDP_TUNNEL_CSUM | NETIF_F_GSO_GRE_CSUM |

			NETIF_F_GSO_IPXIP4 | NETIF_F_GSO_PARTIAL;

	if (bp->flags & BNXT_FLAG_UDP_GSO_CAP)

		dev->hw_enc_features |= NETIF_F_GSO_UDP_L4;

	if (bp->flags & BNXT_FLAG_CHIP_P7)

		dev->udp_tunnel_nic_info = &bnxt_udp_tunnels_p7;

	else

drivers/net/ethernet/broadcom/bnxt/bnxt.h

+1 −0
Original line number Diff line number Diff line
@@ -2044,6 +2044,7 @@ struct bnxt { 
	#define BNXT_FLAG_MULTI_HOST	0x100000

	#define BNXT_FLAG_DSN_VALID	0x200000

	#define BNXT_FLAG_DOUBLE_DB	0x400000

	#define BNXT_FLAG_UDP_GSO_CAP	0x800000

	#define BNXT_FLAG_CHIP_NITRO_A0	0x1000000

	#define BNXT_FLAG_DIM		0x2000000

	#define BNXT_FLAG_ROCE_MIRROR_CAP	0x4000000