diff options
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 144 |
1 files changed, 28 insertions, 116 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 9f79192..1fb7b37 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -33,6 +33,7 @@ #include <net/ip_tunnels.h> #include <net/icmp.h> #include <net/udp.h> +#include <net/udp_tunnel.h> #include <net/rtnetlink.h> #include <net/route.h> #include <net/dsfield.h> @@ -933,7 +934,8 @@ out: /* Dump forwarding table */ static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb, - struct net_device *dev, int idx) + struct net_device *dev, + struct net_device *filter_dev, int idx) { struct vxlan_dev *vxlan = netdev_priv(dev); unsigned int h; @@ -1570,25 +1572,6 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb) return false; } -/* Compute source port for outgoing packet - * first choice to use L4 flow hash since it will spread - * better and maybe available from hardware - * secondary choice is to use jhash on the Ethernet header - */ -__be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb) -{ - unsigned int range = (port_max - port_min) + 1; - u32 hash; - - hash = skb_get_hash(skb); - if (!hash) - hash = jhash(skb->data, 2 * ETH_ALEN, - (__force u32) skb->protocol); - - return htons((((u64) hash * range) >> 32) + port_min); -} -EXPORT_SYMBOL_GPL(vxlan_src_port); - static inline struct sk_buff *vxlan_handle_offloads(struct sk_buff *skb, bool udp_csum) { @@ -1807,7 +1790,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev, if (tos == 1) tos = ip_tunnel_get_dsfield(old_iph, skb); - src_port = vxlan_src_port(vxlan->port_min, vxlan->port_max, skb); + src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->port_min, + vxlan->port_max, true); if (dst->sa.sa_family == AF_INET) { memset(&fl4, 0, sizeof(fl4)); @@ -2235,7 +2219,6 @@ static void vxlan_setup(struct net_device *dev) { struct vxlan_dev *vxlan = netdev_priv(dev); unsigned int h; - int low, high; eth_hw_addr_random(dev); ether_setup(dev); @@ -2272,9 +2255,6 @@ static void vxlan_setup(struct net_device *dev) vxlan->age_timer.function = vxlan_cleanup; vxlan->age_timer.data = (unsigned long) vxlan; - inet_get_local_port_range(dev_net(dev), &low, &high); - vxlan->port_min = low; - vxlan->port_max = high; vxlan->dst_port = htons(vxlan_port); vxlan->dev = dev; @@ -2360,102 +2340,37 @@ static void vxlan_del_work(struct work_struct *work) kfree_rcu(vs, rcu); } -#if IS_ENABLED(CONFIG_IPV6) -/* Create UDP socket for encapsulation receive. AF_INET6 socket - * could be used for both IPv4 and IPv6 communications, but - * users may set bindv6only=1. - */ -static struct socket *create_v6_sock(struct net *net, __be16 port, u32 flags) +static struct socket *vxlan_create_sock(struct net *net, bool ipv6, + __be16 port, u32 flags) { - struct sock *sk; struct socket *sock; - struct sockaddr_in6 vxlan_addr = { - .sin6_family = AF_INET6, - .sin6_port = port, - }; - int rc, val = 1; - - rc = sock_create_kern(AF_INET6, SOCK_DGRAM, IPPROTO_UDP, &sock); - if (rc < 0) { - pr_debug("UDPv6 socket create failed\n"); - return ERR_PTR(rc); - } - - /* Put in proper namespace */ - sk = sock->sk; - sk_change_net(sk, net); - - kernel_setsockopt(sock, SOL_IPV6, IPV6_V6ONLY, - (char *)&val, sizeof(val)); - rc = kernel_bind(sock, (struct sockaddr *)&vxlan_addr, - sizeof(struct sockaddr_in6)); - if (rc < 0) { - pr_debug("bind for UDPv6 socket %pI6:%u (%d)\n", - &vxlan_addr.sin6_addr, ntohs(vxlan_addr.sin6_port), rc); - sk_release_kernel(sk); - return ERR_PTR(rc); - } - /* At this point, IPv6 module should have been loaded in - * sock_create_kern(). - */ - BUG_ON(!ipv6_stub); - - /* Disable multicast loopback */ - inet_sk(sk)->mc_loop = 0; - - if (flags & VXLAN_F_UDP_ZERO_CSUM6_TX) - udp_set_no_check6_tx(sk, true); - - if (flags & VXLAN_F_UDP_ZERO_CSUM6_RX) - udp_set_no_check6_rx(sk, true); - - return sock; -} - -#else - -static struct socket *create_v6_sock(struct net *net, __be16 port, u32 flags) -{ - return ERR_PTR(-EPFNOSUPPORT); -} -#endif + struct udp_port_cfg udp_conf; + int err; -static struct socket *create_v4_sock(struct net *net, __be16 port, u32 flags) -{ - struct sock *sk; - struct socket *sock; - struct sockaddr_in vxlan_addr = { - .sin_family = AF_INET, - .sin_addr.s_addr = htonl(INADDR_ANY), - .sin_port = port, - }; - int rc; + memset(&udp_conf, 0, sizeof(udp_conf)); - /* Create UDP socket for encapsulation receive. */ - rc = sock_create_kern(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sock); - if (rc < 0) { - pr_debug("UDP socket create failed\n"); - return ERR_PTR(rc); + if (ipv6) { + udp_conf.family = AF_INET6; + udp_conf.use_udp6_tx_checksums = + !!(flags & VXLAN_F_UDP_ZERO_CSUM6_TX); + udp_conf.use_udp6_rx_checksums = + !!(flags & VXLAN_F_UDP_ZERO_CSUM6_RX); + } else { + udp_conf.family = AF_INET; + udp_conf.local_ip.s_addr = INADDR_ANY; + udp_conf.use_udp_checksums = + !!(flags & VXLAN_F_UDP_CSUM); } - /* Put in proper namespace */ - sk = sock->sk; - sk_change_net(sk, net); + udp_conf.local_udp_port = port; - rc = kernel_bind(sock, (struct sockaddr *) &vxlan_addr, - sizeof(vxlan_addr)); - if (rc < 0) { - pr_debug("bind for UDP socket %pI4:%u (%d)\n", - &vxlan_addr.sin_addr, ntohs(vxlan_addr.sin_port), rc); - sk_release_kernel(sk); - return ERR_PTR(rc); - } + /* Open UDP socket */ + err = udp_sock_create(net, &udp_conf, &sock); + if (err < 0) + return ERR_PTR(err); /* Disable multicast loopback */ - inet_sk(sk)->mc_loop = 0; - - if (!(flags & VXLAN_F_UDP_CSUM)) - sock->sk->sk_no_check_tx = 1; + inet_sk(sock->sk)->mc_loop = 0; return sock; } @@ -2481,10 +2396,7 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port, INIT_WORK(&vs->del_work, vxlan_del_work); - if (ipv6) - sock = create_v6_sock(net, port, flags); - else - sock = create_v4_sock(net, port, flags); + sock = vxlan_create_sock(net, ipv6, port, flags); if (IS_ERR(sock)) { kfree(vs); return ERR_CAST(sock); |
