From a8170d2b9e8d38a1f3fa3b40b6f8cd34a87d5382 Mon Sep 17 00:00:00 2001 From: "Singhai, Anjali" Date: Mon, 14 Dec 2015 12:21:17 -0800 Subject: [PATCH] geneve: Add geneve udp port offload for ethernet devices Add ndo_ops to add/del UDP ports to a device that supports geneve offload. v2: Comment fix. Signed-off-by: Anjali Singhai Jain Signed-off-by: Kiran Patil Signed-off-by: David S. Miller --- drivers/net/geneve.c | 23 +++++++++++++++++++++++ include/linux/netdevice.h | 20 +++++++++++++++++++- 2 files changed, 42 insertions(+), 1 deletion(-) diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c index 0750d7a93878..89325e483ecf 100644 --- a/drivers/net/geneve.c +++ b/drivers/net/geneve.c @@ -380,8 +380,11 @@ static struct socket *geneve_create_sock(struct net *net, bool ipv6, static void geneve_notify_add_rx_port(struct geneve_sock *gs) { + struct net_device *dev; struct sock *sk = gs->sock->sk; + struct net *net = sock_net(sk); sa_family_t sa_family = sk->sk_family; + __be16 port = inet_sk(sk)->inet_sport; int err; if (sa_family == AF_INET) { @@ -390,6 +393,14 @@ static void geneve_notify_add_rx_port(struct geneve_sock *gs) pr_warn("geneve: udp_add_offload failed with status %d\n", err); } + + rcu_read_lock(); + for_each_netdev_rcu(net, dev) { + if (dev->netdev_ops->ndo_add_geneve_port) + dev->netdev_ops->ndo_add_geneve_port(dev, sa_family, + port); + } + rcu_read_unlock(); } static int geneve_hlen(struct genevehdr *gh) @@ -530,8 +541,20 @@ static struct geneve_sock *geneve_socket_create(struct net *net, __be16 port, static void geneve_notify_del_rx_port(struct geneve_sock *gs) { + struct net_device *dev; struct sock *sk = gs->sock->sk; + struct net *net = sock_net(sk); sa_family_t sa_family = sk->sk_family; + __be16 port = inet_sk(sk)->inet_sport; + + rcu_read_lock(); + for_each_netdev_rcu(net, dev) { + if (dev->netdev_ops->ndo_del_geneve_port) + dev->netdev_ops->ndo_del_geneve_port(dev, sa_family, + port); + } + + rcu_read_unlock(); if (sa_family == AF_INET) udp_del_offload(&gs->udp_offloads); diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 9fb6395967de..81b26a543a3c 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1013,6 +1013,19 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev, * a new port starts listening. The operation is protected by the * vxlan_net->sock_lock. * + * void (*ndo_add_geneve_port)(struct net_device *dev, + * sa_family_t sa_family, __be16 port); + * Called by geneve to notify a driver about the UDP port and socket + * address family that geneve is listnening to. It is called only when + * a new port starts listening. The operation is protected by the + * geneve_net->sock_lock. + * + * void (*ndo_del_geneve_port)(struct net_device *dev, + * sa_family_t sa_family, __be16 port); + * Called by geneve to notify the driver about a UDP port and socket + * address family that geneve is not listening to anymore. The operation + * is protected by the geneve_net->sock_lock. + * * void (*ndo_del_vxlan_port)(struct net_device *dev, * sa_family_t sa_family, __be16 port); * Called by vxlan to notify the driver about a UDP port and socket @@ -1217,7 +1230,12 @@ struct net_device_ops { void (*ndo_del_vxlan_port)(struct net_device *dev, sa_family_t sa_family, __be16 port); - + void (*ndo_add_geneve_port)(struct net_device *dev, + sa_family_t sa_family, + __be16 port); + void (*ndo_del_geneve_port)(struct net_device *dev, + sa_family_t sa_family, + __be16 port); void* (*ndo_dfwd_add_station)(struct net_device *pdev, struct net_device *dev); void (*ndo_dfwd_del_station)(struct net_device *pdev, -- 2.20.1