diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/Kconfig | 1 | ||||
| -rw-r--r-- | net/sctp/protocol.c | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig index 39d7fa9569f8..5da599ff84a9 100644 --- a/net/sctp/Kconfig +++ b/net/sctp/Kconfig @@ -11,6 +11,7 @@ menuconfig IP_SCTP select CRYPTO_HMAC select CRYPTO_SHA1 select LIBCRC32C + select NET_UDP_TUNNEL help Stream Control Transmission Protocol diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 25833238fe93..0f7933422d8e 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -44,6 +44,7 @@ #include <net/addrconf.h> #include <net/inet_common.h> #include <net/inet_ecn.h> +#include <net/udp_tunnel.h> #define MAX_SCTP_PORT_HASH_ENTRIES (64 * 1024) @@ -840,6 +841,45 @@ static int sctp_ctl_sock_init(struct net *net) return 0; } +static int sctp_udp_rcv(struct sock *sk, struct sk_buff *skb) +{ + skb_set_transport_header(skb, sizeof(struct udphdr)); + sctp_rcv(skb); + return 0; +} + +int sctp_udp_sock_start(struct net *net) +{ + struct udp_tunnel_sock_cfg tuncfg = {NULL}; + struct udp_port_cfg udp_conf = {0}; + struct socket *sock; + int err; + + udp_conf.family = AF_INET; + udp_conf.local_ip.s_addr = htonl(INADDR_ANY); + udp_conf.local_udp_port = htons(net->sctp.udp_port); + err = udp_sock_create(net, &udp_conf, &sock); + if (err) { + pr_err("Failed to create the SCTP UDP tunneling v4 sock\n"); + return err; + } + + tuncfg.encap_type = 1; + tuncfg.encap_rcv = sctp_udp_rcv; + setup_udp_tunnel_sock(net, sock, &tuncfg); + net->sctp.udp4_sock = sock->sk; + + return 0; +} + +void sctp_udp_sock_stop(struct net *net) +{ + if (net->sctp.udp4_sock) { + udp_tunnel_sock_release(net->sctp.udp4_sock->sk_socket); + net->sctp.udp4_sock = NULL; + } +} + /* Register address family specific functions. */ int sctp_register_af(struct sctp_af *af) { @@ -1271,6 +1311,9 @@ static int __net_init sctp_defaults_init(struct net *net) /* Enable ECN by default. */ net->sctp.ecn_enable = 1; + /* Set UDP tunneling listening port to 0 by default */ + net->sctp.udp_port = 0; + /* Set SCOPE policy to enabled */ net->sctp.scope_policy = SCTP_SCOPE_POLICY_ENABLE; |