diff options
| -rw-r--r-- | drivers/net/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/net/vxlan.c | 115 |
2 files changed, 25 insertions, 91 deletions
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 89402c3b64f8..c6f6f69f8961 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -148,6 +148,7 @@ config VXLAN tristate "Virtual eXtensible Local Area Network (VXLAN)" depends on INET select NET_IP_TUNNEL + select NET_UDP_TUNNEL ---help--- This allows one to create vxlan virtual interfaces that provide Layer 2 Networks over Layer 3 Networks. VXLAN is often used diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index e6808f7e4e32..d3f3e5d21874 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> @@ -2339,102 +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 + struct udp_port_cfg udp_conf; + int err; -static struct socket *create_v6_sock(struct net *net, __be16 port, u32 flags) -{ - return ERR_PTR(-EPFNOSUPPORT); -} -#endif + memset(&udp_conf, 0, sizeof(udp_conf)); -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; - - /* 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; } @@ -2460,10 +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); |