From 9dc2ad1008c9f91f55ec6c89ec0f8639dfc91596 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 17 Sep 2015 16:11:10 +0200 Subject: [PATCH 1/5] vxlan: set needed headroom correctly vxlan_setup is called when allocating the net_device, i.e. way before vxlan_newlink (or vxlan_dev_configure) is called. This means vxlan->default_dst is actually unset in vxlan_setup and the condition that sets needed_headroom always takes the else branch. Set the needed_headrom at the point when we have the information about the address family available. Fixes: e4c7ed415387c ("vxlan: add ipv6 support") Fixes: 2853af6a2ea1a ("vxlan: use dev->needed_headroom instead of dev->hard_header_len") CC: Cong Wang Signed-off-by: Jiri Benc Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index cf8b7f0473b3..6ebe562af04e 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2392,10 +2392,6 @@ static void vxlan_setup(struct net_device *dev) eth_hw_addr_random(dev); ether_setup(dev); - if (vxlan->default_dst.remote_ip.sa.sa_family == AF_INET6) - dev->needed_headroom = ETH_HLEN + VXLAN6_HEADROOM; - else - dev->needed_headroom = ETH_HLEN + VXLAN_HEADROOM; dev->netdev_ops = &vxlan_netdev_ops; dev->destructor = free_netdev; @@ -2670,8 +2666,12 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, dev->needed_headroom = lowerdev->hard_header_len + (use_ipv6 ? VXLAN6_HEADROOM : VXLAN_HEADROOM); - } else if (use_ipv6) + } else if (use_ipv6) { vxlan->flags |= VXLAN_F_IPV6; + dev->needed_headroom = ETH_HLEN + VXLAN6_HEADROOM; + } else { + dev->needed_headroom = ETH_HLEN + VXLAN_HEADROOM; + } memcpy(&vxlan->cfg, conf, sizeof(*conf)); if (!vxlan->cfg.dst_port) From 057ba29bbe85e9587635e3128b26fa30fe849af9 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 17 Sep 2015 16:11:11 +0200 Subject: [PATCH 2/5] vxlan: reject IPv6 addresses if IPv6 is not configured When IPv6 address is set without IPv6 configured, the vxlan socket is mostly treated as an IPv4 one but various lookus in fdb etc. still take the AF_INET6 into account. This creates incosistencies with weird consequences. Just reject IPv6 addresses in such case. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 6ebe562af04e..bbac1d35ed4e 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2636,8 +2636,11 @@ static int vxlan_dev_configure(struct net *src_net, struct net_device *dev, dst->remote_ip.sa.sa_family = AF_INET; if (dst->remote_ip.sa.sa_family == AF_INET6 || - vxlan->cfg.saddr.sa.sa_family == AF_INET6) + vxlan->cfg.saddr.sa.sa_family == AF_INET6) { + if (!IS_ENABLED(CONFIG_IPV6)) + return -EPFNOSUPPORT; use_ipv6 = true; + } if (conf->remote_ifindex) { struct net_device *lowerdev From 378fddc281072a10b621341b9f78c902303a8fe7 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 17 Sep 2015 16:11:12 +0200 Subject: [PATCH 3/5] qlcnic: track vxlan port count The callback for adding vxlan port can be called with the same port for both IPv4 and IPv6. Do not disable the offloading when the same port for both protocols is added and later one of them removed. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 1 + .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 18 +++++++++++++----- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h index 06bcc734fe8d..d6696cfa11d2 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h @@ -536,6 +536,7 @@ struct qlcnic_hardware_context { u8 extend_lb_time; u8 phys_port_id[ETH_ALEN]; u8 lb_mode; + u8 vxlan_port_count; u16 vxlan_port; struct device *hwmon_dev; u32 post_mode; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index 8b08b20e8b30..d4481454b5f8 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -483,11 +483,17 @@ static void qlcnic_add_vxlan_port(struct net_device *netdev, /* Adapter supports only one VXLAN port. Use very first port * for enabling offload */ - if (!qlcnic_encap_rx_offload(adapter) || ahw->vxlan_port) + if (!qlcnic_encap_rx_offload(adapter)) return; + if (!ahw->vxlan_port_count) { + ahw->vxlan_port_count = 1; + ahw->vxlan_port = ntohs(port); + adapter->flags |= QLCNIC_ADD_VXLAN_PORT; + return; + } + if (ahw->vxlan_port == ntohs(port)) + ahw->vxlan_port_count++; - ahw->vxlan_port = ntohs(port); - adapter->flags |= QLCNIC_ADD_VXLAN_PORT; } static void qlcnic_del_vxlan_port(struct net_device *netdev, @@ -496,11 +502,13 @@ static void qlcnic_del_vxlan_port(struct net_device *netdev, struct qlcnic_adapter *adapter = netdev_priv(netdev); struct qlcnic_hardware_context *ahw = adapter->ahw; - if (!qlcnic_encap_rx_offload(adapter) || !ahw->vxlan_port || + if (!qlcnic_encap_rx_offload(adapter) || !ahw->vxlan_port_count || (ahw->vxlan_port != ntohs(port))) return; - adapter->flags |= QLCNIC_DEL_VXLAN_PORT; + ahw->vxlan_port_count--; + if (!ahw->vxlan_port_count) + adapter->flags |= QLCNIC_DEL_VXLAN_PORT; } static netdev_features_t qlcnic_features_check(struct sk_buff *skb, From 1e5b311ab2cc3baf73cdff066ab39c7466bf166b Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 17 Sep 2015 16:11:13 +0200 Subject: [PATCH 4/5] be2net: allow offloading with the same port for IPv4 and IPv6 The callback for adding vxlan port can be called with the same port for both IPv4 and IPv6. Do not disable the offloading if this occurs. Signed-off-by: Jiri Benc Acked-by: Sathya Perla Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be.h | 1 + drivers/net/ethernet/emulex/benet/be_main.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 0a27805cbbbd..821540913343 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -582,6 +582,7 @@ struct be_adapter { u16 pvid; __be16 vxlan_port; int vxlan_port_count; + int vxlan_port_aliases; struct phy_info phy; u8 wol_cap; bool wol_en; diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 12687bf52b95..7bf51a1a0a77 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5176,6 +5176,11 @@ static void be_add_vxlan_port(struct net_device *netdev, sa_family_t sa_family, if (lancer_chip(adapter) || BEx_chip(adapter) || be_is_mc(adapter)) return; + if (adapter->vxlan_port == port && adapter->vxlan_port_count) { + adapter->vxlan_port_aliases++; + return; + } + if (adapter->flags & BE_FLAGS_VXLAN_OFFLOADS) { dev_info(dev, "Only one UDP port supported for VxLAN offloads\n"); @@ -5226,6 +5231,11 @@ static void be_del_vxlan_port(struct net_device *netdev, sa_family_t sa_family, if (adapter->vxlan_port != port) goto done; + if (adapter->vxlan_port_aliases) { + adapter->vxlan_port_aliases--; + return; + } + be_disable_vxlan_offloads(adapter); dev_info(&adapter->pdev->dev, From ac7eccd4d48fcc70d9fd6e4d10657bcde0a73f9f Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Thu, 17 Sep 2015 16:11:14 +0200 Subject: [PATCH 5/5] bnx2x: track vxlan port count The callback for adding vxlan port can be called with the same port for both IPv4 and IPv6. Do not disable the offloading when the same port for both protocols is added and later one of them removed. Signed-off-by: Jiri Benc Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 1 + drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 14 ++++++++++++-- 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h index ba936635322a..b5e64b02200c 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h @@ -1946,6 +1946,7 @@ struct bnx2x { u16 vlan_cnt; u16 vlan_credit; u16 vxlan_dst_port; + u8 vxlan_dst_port_count; bool accept_any_vlan; }; diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index 89a174fa1300..f1d62d5dbaff 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -10108,12 +10108,18 @@ static void __bnx2x_add_vxlan_port(struct bnx2x *bp, u16 port) if (!netif_running(bp->dev)) return; - if (bp->vxlan_dst_port || !IS_PF(bp)) { + if (bp->vxlan_dst_port_count && bp->vxlan_dst_port == port) { + bp->vxlan_dst_port_count++; + return; + } + + if (bp->vxlan_dst_port_count || !IS_PF(bp)) { DP(BNX2X_MSG_SP, "Vxlan destination port limit reached\n"); return; } bp->vxlan_dst_port = port; + bp->vxlan_dst_port_count = 1; bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_ADD_VXLAN_PORT, 0); } @@ -10128,10 +10134,14 @@ static void bnx2x_add_vxlan_port(struct net_device *netdev, static void __bnx2x_del_vxlan_port(struct bnx2x *bp, u16 port) { - if (!bp->vxlan_dst_port || bp->vxlan_dst_port != port || !IS_PF(bp)) { + if (!bp->vxlan_dst_port_count || bp->vxlan_dst_port != port || + !IS_PF(bp)) { DP(BNX2X_MSG_SP, "Invalid vxlan port\n"); return; } + bp->vxlan_dst_port--; + if (bp->vxlan_dst_port) + return; if (netif_running(bp->dev)) { bnx2x_schedule_sp_rtnl(bp, BNX2X_SP_RTNL_DEL_VXLAN_PORT, 0);