From 67359c3c9fc8e9fbed991bbe0cfeda55c7e0a64c Mon Sep 17 00:00:00 2001 From: Mark Rustad Date: Mon, 15 Jun 2015 11:33:25 -0700 Subject: [PATCH] ixgbe: Add support for VXLAN RX offloads Add support for VXLAN RX offloads for the X55x devices that support them. Signed-off-by: Mark Rustad Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe.h | 6 + .../net/ethernet/intel/ixgbe/ixgbe_82599.c | 18 ++- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 119 ++++++++++++++---- drivers/net/ethernet/intel/ixgbe/ixgbe_type.h | 15 ++- 4 files changed, 127 insertions(+), 31 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index ac3ac2a20386..8830c0fb5ffb 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -630,6 +630,7 @@ struct ixgbe_adapter { #define IXGBE_FLAG_FCOE_ENABLED (u32)(1 << 21) #define IXGBE_FLAG_SRIOV_CAPABLE (u32)(1 << 22) #define IXGBE_FLAG_SRIOV_ENABLED (u32)(1 << 23) +#define IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE BIT(24) u32 flags2; #define IXGBE_FLAG2_RSC_CAPABLE (u32)(1 << 0) @@ -644,6 +645,9 @@ struct ixgbe_adapter { #define IXGBE_FLAG2_RSS_FIELD_IPV6_UDP (u32)(1 << 9) #define IXGBE_FLAG2_PTP_PPS_ENABLED (u32)(1 << 10) #define IXGBE_FLAG2_PHY_INTERRUPT (u32)(1 << 11) +#ifdef CONFIG_IXGBE_VXLAN +#define IXGBE_FLAG2_VXLAN_REREG_NEEDED BIT(12) +#endif /* Tx fast path data */ int num_tx_queues; @@ -757,7 +761,9 @@ struct ixgbe_adapter { u32 timer_event_accumulator; u32 vferr_refcount; struct ixgbe_mac_addr *mac_table; +#ifdef CONFIG_IXGBE_VXLAN u16 vxlan_port; +#endif struct kobject *info_kobj; #ifdef CONFIG_IXGBE_HWMON struct hwmon_buff *ixgbe_hwmon_buff; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c index d91044297062..dd7062fed61a 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c @@ -1519,20 +1519,28 @@ static u32 ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input, * @input: unique input dword * @common: compressed common input dword * @queue: queue index to direct traffic to + * + * Note that the tunnel bit in input must not be set when the hardware + * tunneling support does not exist. **/ s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw, union ixgbe_atr_hash_dword input, union ixgbe_atr_hash_dword common, u8 queue) { - u64 fdirhashcmd; - u32 fdircmd; + u64 fdirhashcmd; + u8 flow_type; + bool tunnel; + u32 fdircmd; /* * Get the flow_type in order to program FDIRCMD properly * lowest 2 bits are FDIRCMD.L4TYPE, third lowest bit is FDIRCMD.IPV6 */ - switch (input.formatted.flow_type) { + tunnel = !!(input.formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK); + flow_type = input.formatted.flow_type & + (IXGBE_ATR_L4TYPE_TUNNEL_MASK - 1); + switch (flow_type) { case IXGBE_ATR_FLOW_TYPE_TCPV4: case IXGBE_ATR_FLOW_TYPE_UDPV4: case IXGBE_ATR_FLOW_TYPE_SCTPV4: @@ -1548,8 +1556,10 @@ s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw, /* configure FDIRCMD register */ fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE | IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN; - fdircmd |= input.formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT; + fdircmd |= (u32)flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT; fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT; + if (tunnel) + fdircmd |= IXGBE_FDIRCMD_TUNNEL_FILTER; /* * The lower 32-bits of fdirhashcmd is for FDIRHASH, the upper 32-bits diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 900562e023a7..dcf849ddb7ce 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -1,7 +1,7 @@ /******************************************************************************* Intel 10 Gigabit PCI Express Linux driver - Copyright(c) 1999 - 2014 Intel Corporation. + Copyright(c) 1999 - 2015 Intel Corporation. This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, @@ -65,6 +65,9 @@ #include "ixgbe_common.h" #include "ixgbe_dcb_82599.h" #include "ixgbe_sriov.h" +#ifdef CONFIG_IXGBE_VXLAN +#include +#endif char ixgbe_driver_name[] = "ixgbe"; static const char ixgbe_driver_string[] = @@ -79,7 +82,7 @@ static char ixgbe_default_device_descr[] = #define DRV_VERSION "4.0.1-k" const char ixgbe_driver_version[] = DRV_VERSION; static const char ixgbe_copyright[] = - "Copyright (c) 1999-2014 Intel Corporation."; + "Copyright (c) 1999-2015 Intel Corporation."; static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter"; @@ -1430,7 +1433,6 @@ static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, (hdr_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_TUNNEL >> 16))) { encap_pkt = true; skb->encapsulation = 1; - skb->ip_summed = CHECKSUM_NONE; } /* if IP and error */ @@ -4261,6 +4263,21 @@ static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) } } +static void ixgbe_clear_vxlan_port(struct ixgbe_adapter *adapter) +{ + switch (adapter->hw.mac.type) { + case ixgbe_mac_X550: + case ixgbe_mac_X550EM_x: + IXGBE_WRITE_REG(&adapter->hw, IXGBE_VXLANCTRL, 0); +#ifdef CONFIG_IXGBE_VXLAN + adapter->vxlan_port = 0; +#endif + break; + default: + break; + } +} + #ifdef CONFIG_IXGBE_DCB /** * ixgbe_configure_dcb - Configure DCB hardware @@ -5301,6 +5318,9 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter) case ixgbe_mac_X550: #ifdef CONFIG_IXGBE_DCA adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE; +#endif +#ifdef CONFIG_IXGBE_VXLAN + adapter->flags |= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE; #endif break; default: @@ -5753,10 +5773,11 @@ static int ixgbe_open(struct net_device *netdev) ixgbe_up_complete(adapter); -#if IS_ENABLED(CONFIG_IXGBE_VXLAN) + ixgbe_clear_vxlan_port(adapter); +#ifdef CONFIG_IXGBE_VXLAN vxlan_get_rx_port(netdev); - #endif + return 0; err_set_queues: @@ -6816,6 +6837,12 @@ static void ixgbe_service_task(struct work_struct *work) ixgbe_service_event_complete(adapter); return; } +#ifdef CONFIG_IXGBE_VXLAN + if (adapter->flags2 & IXGBE_FLAG2_VXLAN_REREG_NEEDED) { + adapter->flags2 &= ~IXGBE_FLAG2_VXLAN_REREG_NEEDED; + vxlan_get_rx_port(adapter->netdev); + } +#endif /* CONFIG_IXGBE_VXLAN */ ixgbe_reset_subtask(adapter); ixgbe_phy_interrupt_subtask(adapter); ixgbe_sfp_detection_subtask(adapter); @@ -7240,6 +7267,10 @@ static void ixgbe_atr(struct ixgbe_ring *ring, struct ipv6hdr *ipv6; } hdr; struct tcphdr *th; + struct sk_buff *skb; +#ifdef CONFIG_IXGBE_VXLAN + u8 encap = false; +#endif /* CONFIG_IXGBE_VXLAN */ __be16 vlan_id; /* if ring doesn't have a interrupt vector, cannot perform ATR */ @@ -7253,16 +7284,36 @@ static void ixgbe_atr(struct ixgbe_ring *ring, ring->atr_count++; /* snag network header to get L4 type and address */ - hdr.network = skb_network_header(first->skb); + skb = first->skb; + hdr.network = skb_network_header(skb); + if (skb->encapsulation) { +#ifdef CONFIG_IXGBE_VXLAN + struct ixgbe_adapter *adapter = q_vector->adapter; - /* Currently only IPv4/IPv6 with TCP is supported */ - if ((first->protocol != htons(ETH_P_IPV6) || - hdr.ipv6->nexthdr != IPPROTO_TCP) && - (first->protocol != htons(ETH_P_IP) || - hdr.ipv4->protocol != IPPROTO_TCP)) + if (!adapter->vxlan_port) + return; + if (first->protocol != htons(ETH_P_IP) || + hdr.ipv4->version != IPVERSION || + hdr.ipv4->protocol != IPPROTO_UDP) { + return; + } + if (ntohs(udp_hdr(skb)->dest) != adapter->vxlan_port) + return; + encap = true; + hdr.network = skb_inner_network_header(skb); + th = inner_tcp_hdr(skb); +#else return; - - th = tcp_hdr(first->skb); +#endif /* CONFIG_IXGBE_VXLAN */ + } else { + /* Currently only IPv4/IPv6 with TCP is supported */ + if ((first->protocol != htons(ETH_P_IPV6) || + hdr.ipv6->nexthdr != IPPROTO_TCP) && + (first->protocol != htons(ETH_P_IP) || + hdr.ipv4->protocol != IPPROTO_TCP)) + return; + th = tcp_hdr(skb); + } /* skip this packet since it is invalid or the socket is closing */ if (!th || th->fin) @@ -7311,6 +7362,11 @@ static void ixgbe_atr(struct ixgbe_ring *ring, hdr.ipv6->daddr.s6_addr32[3]; } +#ifdef CONFIG_IXGBE_VXLAN + if (encap) + input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; +#endif /* CONFIG_IXGBE_VXLAN */ + /* This assumes the Rx queue and Tx queue are bound to the same CPU */ ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, input, common, ring->queue_index); @@ -7937,12 +7993,23 @@ static int ixgbe_set_features(struct net_device *netdev, need_reset = true; netdev->features = features; + +#ifdef CONFIG_IXGBE_VXLAN + if ((adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) { + if (features & NETIF_F_RXCSUM) + adapter->flags2 |= IXGBE_FLAG2_VXLAN_REREG_NEEDED; + else + ixgbe_clear_vxlan_port(adapter); + } +#endif /* CONFIG_IXGBE_VXLAN */ + if (need_reset) ixgbe_do_reset(netdev); return 0; } +#ifdef CONFIG_IXGBE_VXLAN /** * ixgbe_add_vxlan_port - Get notifications about VXLAN ports that come up * @dev: The port's netdev @@ -7956,17 +8023,18 @@ static void ixgbe_add_vxlan_port(struct net_device *dev, sa_family_t sa_family, struct ixgbe_hw *hw = &adapter->hw; u16 new_port = ntohs(port); + if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) + return; + if (sa_family == AF_INET6) return; - if (adapter->vxlan_port == new_port) { - netdev_info(dev, "Port %d already offloaded\n", new_port); + if (adapter->vxlan_port == new_port) return; - } if (adapter->vxlan_port) { netdev_info(dev, - "Hit Max num of UDP ports, not adding port %d\n", + "Hit Max num of VXLAN ports, not adding port %d\n", new_port); return; } @@ -7985,9 +8053,11 @@ static void ixgbe_del_vxlan_port(struct net_device *dev, sa_family_t sa_family, __be16 port) { struct ixgbe_adapter *adapter = netdev_priv(dev); - struct ixgbe_hw *hw = &adapter->hw; u16 new_port = ntohs(port); + if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) + return; + if (sa_family == AF_INET6) return; @@ -7997,9 +8067,10 @@ static void ixgbe_del_vxlan_port(struct net_device *dev, sa_family_t sa_family, return; } - adapter->vxlan_port = 0; - IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 0); + ixgbe_clear_vxlan_port(adapter); + adapter->flags2 |= IXGBE_FLAG2_VXLAN_REREG_NEEDED; } +#endif /* CONFIG_IXGBE_VXLAN */ static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, @@ -8290,8 +8361,10 @@ static const struct net_device_ops ixgbe_netdev_ops = { .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, .ndo_dfwd_add_station = ixgbe_fwd_add, .ndo_dfwd_del_station = ixgbe_fwd_del, +#ifdef CONFIG_IXGBE_VXLAN .ndo_add_vxlan_port = ixgbe_add_vxlan_port, .ndo_del_vxlan_port = ixgbe_del_vxlan_port, +#endif /* CONFIG_IXGBE_VXLAN */ .ndo_features_check = ixgbe_features_check, }; @@ -8658,14 +8731,18 @@ skip_sriov: netdev->priv_flags |= IFF_UNICAST_FLT; netdev->priv_flags |= IFF_SUPP_NOFCS; +#ifdef CONFIG_IXGBE_VXLAN switch (adapter->hw.mac.type) { case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: - netdev->hw_enc_features |= NETIF_F_RXCSUM; + netdev->hw_enc_features |= NETIF_F_RXCSUM | + NETIF_F_IP_CSUM | + NETIF_F_IPV6_CSUM; break; default: break; } +#endif /* CONFIG_IXGBE_VXLAN */ #ifdef CONFIG_IXGBE_DCB netdev->dcbnl_ops = &dcbnl_ops; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h index 938a4102adf5..0e678243abf7 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h @@ -2540,9 +2540,11 @@ enum ixgbe_fdir_pballoc_type { #define IXGBE_FDIRCMD_QUEUE_EN 0x00008000 #define IXGBE_FDIRCMD_FLOW_TYPE_SHIFT 5 #define IXGBE_FDIRCMD_RX_QUEUE_SHIFT 16 +#define IXGBE_FDIRCMD_RX_TUNNEL_FILTER_SHIFT 23 #define IXGBE_FDIRCMD_VT_POOL_SHIFT 24 #define IXGBE_FDIR_INIT_DONE_POLL 10 #define IXGBE_FDIRCMD_CMD_POLL 10 +#define IXGBE_FDIRCMD_TUNNEL_FILTER 0x00800000 #define IXGBE_FDIR_DROP_QUEUE 127 @@ -2833,12 +2835,13 @@ typedef u32 ixgbe_link_speed; #define IXGBE_ATR_SIGNATURE_HASH_KEY 0x174D3614 /* Software ATR input stream values and masks */ -#define IXGBE_ATR_HASH_MASK 0x7fff -#define IXGBE_ATR_L4TYPE_MASK 0x3 -#define IXGBE_ATR_L4TYPE_UDP 0x1 -#define IXGBE_ATR_L4TYPE_TCP 0x2 -#define IXGBE_ATR_L4TYPE_SCTP 0x3 -#define IXGBE_ATR_L4TYPE_IPV6_MASK 0x4 +#define IXGBE_ATR_HASH_MASK 0x7fff +#define IXGBE_ATR_L4TYPE_MASK 0x3 +#define IXGBE_ATR_L4TYPE_UDP 0x1 +#define IXGBE_ATR_L4TYPE_TCP 0x2 +#define IXGBE_ATR_L4TYPE_SCTP 0x3 +#define IXGBE_ATR_L4TYPE_IPV6_MASK 0x4 +#define IXGBE_ATR_L4TYPE_TUNNEL_MASK 0x10 enum ixgbe_atr_flow_type { IXGBE_ATR_FLOW_TYPE_IPV4 = 0x0, IXGBE_ATR_FLOW_TYPE_UDPV4 = 0x1, -- 2.39.2