From c9c47142f6bf4684c13b571b312b67f3830f1d86 Mon Sep 17 00:00:00 2001 From: Sathya Perla Date: Thu, 27 Mar 2014 10:46:19 +0530 Subject: [PATCH] be2net: csum, tso and rss steering offload support for VxLAN This patch mainly implements the add/del_vxlan_port() methods by invoking the needed FW cmds for supporting VxLAN offloads for Skyhawk-R. Signed-off-by: Sathya Perla Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be.h | 7 +- drivers/net/ethernet/emulex/benet/be_hw.h | 3 +- drivers/net/ethernet/emulex/benet/be_main.c | 124 +++++++++++++++++++- 3 files changed, 125 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index a587c8aa27ed..8ccaa2520dc3 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -296,6 +296,7 @@ struct be_rx_compl_info { u8 qnq; u8 pkt_type; u8 ip_frag; + u8 tunneled; }; struct be_rx_obj { @@ -371,10 +372,11 @@ enum vf_state { #define BE_FLAGS_WORKER_SCHEDULED (1 << 3) #define BE_FLAGS_VLAN_PROMISC (1 << 4) #define BE_FLAGS_NAPI_ENABLED (1 << 9) -#define BE_UC_PMAC_COUNT 30 -#define BE_VF_UC_PMAC_COUNT 2 #define BE_FLAGS_QNQ_ASYNC_EVT_RCVD (1 << 11) +#define BE_FLAGS_VXLAN_OFFLOADS (1 << 12) +#define BE_UC_PMAC_COUNT 30 +#define BE_VF_UC_PMAC_COUNT 2 /* Ethtool set_dump flags */ #define LANCER_INITIATE_FW_DUMP 0x1 @@ -494,6 +496,7 @@ struct be_adapter { u32 sli_family; u8 hba_port_num; u16 pvid; + __be16 vxlan_port; struct phy_info phy; u8 wol_cap; bool wol_en; diff --git a/drivers/net/ethernet/emulex/benet/be_hw.h b/drivers/net/ethernet/emulex/benet/be_hw.h index 28ac8dd0beaa..3bd198550edb 100644 --- a/drivers/net/ethernet/emulex/benet/be_hw.h +++ b/drivers/net/ethernet/emulex/benet/be_hw.h @@ -407,7 +407,8 @@ struct amap_eth_rx_compl_v1 { u8 vntagp; /* dword 2 */ u8 header_len[8]; /* dword 2 */ u8 header_split[2]; /* dword 2 */ - u8 rsvd1[13]; /* dword 2 */ + u8 rsvd1[12]; /* dword 2 */ + u8 tunneled; u8 valid; /* dword 2 */ u8 rsshash[32]; /* dword 3 */ } __packed; diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 8790e5497ba0..c89dc85ad8d6 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -23,6 +23,7 @@ #include #include #include +#include MODULE_VERSION(DRV_VER); MODULE_DEVICE_TABLE(pci, be_dev_ids); @@ -718,10 +719,23 @@ static inline u16 be_get_tx_vlan_tag(struct be_adapter *adapter, return vlan_tag; } +/* Used only for IP tunnel packets */ +static u16 skb_inner_ip_proto(struct sk_buff *skb) +{ + return (inner_ip_hdr(skb)->version == 4) ? + inner_ip_hdr(skb)->protocol : inner_ipv6_hdr(skb)->nexthdr; +} + +static u16 skb_ip_proto(struct sk_buff *skb) +{ + return (ip_hdr(skb)->version == 4) ? + ip_hdr(skb)->protocol : ipv6_hdr(skb)->nexthdr; +} + static void wrb_fill_hdr(struct be_adapter *adapter, struct be_eth_hdr_wrb *hdr, struct sk_buff *skb, u32 wrb_cnt, u32 len, bool skip_hw_vlan) { - u16 vlan_tag; + u16 vlan_tag, proto; memset(hdr, 0, sizeof(*hdr)); @@ -734,9 +748,15 @@ static void wrb_fill_hdr(struct be_adapter *adapter, struct be_eth_hdr_wrb *hdr, if (skb_is_gso_v6(skb) && !lancer_chip(adapter)) AMAP_SET_BITS(struct amap_eth_hdr_wrb, lso6, hdr, 1); } else if (skb->ip_summed == CHECKSUM_PARTIAL) { - if (is_tcp_pkt(skb)) + if (skb->encapsulation) { + AMAP_SET_BITS(struct amap_eth_hdr_wrb, ipcs, hdr, 1); + proto = skb_inner_ip_proto(skb); + } else { + proto = skb_ip_proto(skb); + } + if (proto == IPPROTO_TCP) AMAP_SET_BITS(struct amap_eth_hdr_wrb, tcpcs, hdr, 1); - else if (is_udp_pkt(skb)) + else if (proto == IPPROTO_UDP) AMAP_SET_BITS(struct amap_eth_hdr_wrb, udpcs, hdr, 1); } @@ -1467,9 +1487,10 @@ static void be_rx_stats_update(struct be_rx_obj *rxo, static inline bool csum_passed(struct be_rx_compl_info *rxcp) { /* L4 checksum is not reliable for non TCP/UDP packets. - * Also ignore ipcksm for ipv6 pkts */ + * Also ignore ipcksm for ipv6 pkts + */ return (rxcp->tcpf || rxcp->udpf) && rxcp->l4_csum && - (rxcp->ip_csum || rxcp->ipv6); + (rxcp->ip_csum || rxcp->ipv6) && !rxcp->err; } static struct be_rx_page_info *get_rx_page_info(struct be_rx_obj *rxo) @@ -1612,6 +1633,8 @@ static void be_rx_compl_process(struct be_rx_obj *rxo, struct napi_struct *napi, skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]); if (netdev->features & NETIF_F_RXHASH) skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3); + + skb->encapsulation = rxcp->tunneled; skb_mark_napi_id(skb, napi); if (rxcp->vlanf) @@ -1668,6 +1691,8 @@ static void be_rx_compl_process_gro(struct be_rx_obj *rxo, skb_record_rx_queue(skb, rxo - &adapter->rx_obj[0]); if (adapter->netdev->features & NETIF_F_RXHASH) skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3); + + skb->encapsulation = rxcp->tunneled; skb_mark_napi_id(skb, napi); if (rxcp->vlanf) @@ -1704,6 +1729,8 @@ static void be_parse_rx_compl_v1(struct be_eth_rx_compl *compl, compl); } rxcp->port = AMAP_GET_BITS(struct amap_eth_rx_compl_v1, port, compl); + rxcp->tunneled = + AMAP_GET_BITS(struct amap_eth_rx_compl_v1, tunneled, compl); } static void be_parse_rx_compl_v0(struct be_eth_rx_compl *compl, @@ -2834,6 +2861,9 @@ static int be_open(struct net_device *netdev) netif_tx_start_all_queues(netdev); be_roce_dev_open(adapter); + + if (skyhawk_chip(adapter)) + vxlan_get_rx_port(netdev); return 0; err: be_close(adapter->netdev); @@ -2989,6 +3019,19 @@ static void be_mac_clear(struct be_adapter *adapter) } } +static void be_disable_vxlan_offloads(struct be_adapter *adapter) +{ + if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) + be_cmd_manage_iface(adapter, adapter->if_handle, + OP_CONVERT_TUNNEL_TO_NORMAL); + + if (adapter->vxlan_port) + be_cmd_set_vxlan_port(adapter, 0); + + adapter->flags &= ~BE_FLAGS_VXLAN_OFFLOADS; + adapter->vxlan_port = 0; +} + static int be_clear(struct be_adapter *adapter) { be_cancel_worker(adapter); @@ -2996,6 +3039,8 @@ static int be_clear(struct be_adapter *adapter) if (sriov_enabled(adapter)) be_vf_clear(adapter); + be_disable_vxlan_offloads(adapter); + /* delete the primary mac along with the uc-mac list */ be_mac_clear(adapter); @@ -4120,6 +4165,65 @@ static int be_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, BRIDGE_MODE_VEPA : BRIDGE_MODE_VEB); } +static void be_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family, + __be16 port) +{ + struct be_adapter *adapter = netdev_priv(netdev); + struct device *dev = &adapter->pdev->dev; + int status; + + if (lancer_chip(adapter) || BEx_chip(adapter)) + return; + + if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) { + dev_warn(dev, "Cannot add UDP port %d for VxLAN offloads\n", + be16_to_cpu(port)); + dev_info(dev, + "Only one UDP port supported for VxLAN offloads\n"); + return; + } + + status = be_cmd_manage_iface(adapter, adapter->if_handle, + OP_CONVERT_NORMAL_TO_TUNNEL); + if (status) { + dev_warn(dev, "Failed to convert normal interface to tunnel\n"); + goto err; + } + + status = be_cmd_set_vxlan_port(adapter, port); + if (status) { + dev_warn(dev, "Failed to add VxLAN port\n"); + goto err; + } + adapter->flags |= BE_FLAGS_VXLAN_OFFLOADS; + adapter->vxlan_port = port; + + dev_info(dev, "Enabled VxLAN offloads for UDP port %d\n", + be16_to_cpu(port)); + return; +err: + be_disable_vxlan_offloads(adapter); + return; +} + +static void be_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family, + __be16 port) +{ + struct be_adapter *adapter = netdev_priv(netdev); + + if (lancer_chip(adapter) || BEx_chip(adapter)) + return; + + if (adapter->vxlan_port != port) + return; + + be_disable_vxlan_offloads(adapter); + + dev_info(&adapter->pdev->dev, + "Disabled VxLAN offloads for UDP port %d\n", + be16_to_cpu(port)); +} + static const struct net_device_ops be_netdev_ops = { .ndo_open = be_open, .ndo_stop = be_close, @@ -4142,14 +4246,22 @@ static const struct net_device_ops be_netdev_ops = { .ndo_bridge_setlink = be_ndo_bridge_setlink, .ndo_bridge_getlink = be_ndo_bridge_getlink, #ifdef CONFIG_NET_RX_BUSY_POLL - .ndo_busy_poll = be_busy_poll + .ndo_busy_poll = be_busy_poll, #endif + .ndo_add_vxlan_port = be_add_vxlan_port, + .ndo_del_vxlan_port = be_del_vxlan_port, }; static void be_netdev_init(struct net_device *netdev) { struct be_adapter *adapter = netdev_priv(netdev); + if (skyhawk_chip(adapter)) { + netdev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GSO_UDP_TUNNEL; + netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL; + } netdev->hw_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX;