/*
- * Copyright (c) 2014 Nicira, Inc.
+ * Copyright (c) 2015 Nicira, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
#include "datapath.h"
#include "vport.h"
+#include "vport-netdev.h"
static struct vport_ops ovs_geneve_vport_ops;
-
/**
* struct geneve_port - Keeps track of open UDP ports
- * @gs: The socket created for this port number.
- * @name: vport name.
+ * @dst_port: destination port.
*/
struct geneve_port {
- struct geneve_sock *gs;
- char name[IFNAMSIZ];
+ u16 port_no;
};
-static LIST_HEAD(geneve_ports);
-
static inline struct geneve_port *geneve_vport(const struct vport *vport)
{
return vport_priv(vport);
}
-/* Convert 64 bit tunnel ID to 24 bit VNI. */
-static void tunnel_id_to_vni(__be64 tun_id, __u8 *vni)
-{
-#ifdef __BIG_ENDIAN
- vni[0] = (__force __u8)(tun_id >> 16);
- vni[1] = (__force __u8)(tun_id >> 8);
- vni[2] = (__force __u8)tun_id;
-#else
- vni[0] = (__force __u8)((__force u64)tun_id >> 40);
- vni[1] = (__force __u8)((__force u64)tun_id >> 48);
- vni[2] = (__force __u8)((__force u64)tun_id >> 56);
-#endif
-}
-
-/* Convert 24 bit VNI to 64 bit tunnel ID. */
-static __be64 vni_to_tunnel_id(const __u8 *vni)
-{
-#ifdef __BIG_ENDIAN
- return (vni[0] << 16) | (vni[1] << 8) | vni[2];
-#else
- return (__force __be64)(((__force u64)vni[0] << 40) |
- ((__force u64)vni[1] << 48) |
- ((__force u64)vni[2] << 56));
-#endif
-}
-
-static void geneve_rcv(struct geneve_sock *gs, struct sk_buff *skb)
-{
- struct vport *vport = gs->rcv_data;
- struct genevehdr *geneveh = geneve_hdr(skb);
- int opts_len;
- struct ovs_tunnel_info tun_info;
- __be64 key;
- __be16 flags;
-
- opts_len = geneveh->opt_len * 4;
-
- flags = TUNNEL_KEY | TUNNEL_GENEVE_OPT |
- (udp_hdr(skb)->check != 0 ? TUNNEL_CSUM : 0) |
- (geneveh->oam ? TUNNEL_OAM : 0) |
- (geneveh->critical ? TUNNEL_CRIT_OPT : 0);
-
- key = vni_to_tunnel_id(geneveh->vni);
-
- ovs_flow_tun_info_init(&tun_info, ip_hdr(skb),
- udp_hdr(skb)->source, udp_hdr(skb)->dest,
- key, flags,
- geneveh->options, opts_len);
-
- ovs_vport_receive(vport, skb, &tun_info);
-}
-
static int geneve_get_options(const struct vport *vport,
struct sk_buff *skb)
{
struct geneve_port *geneve_port = geneve_vport(vport);
- __be16 dst_port = inet_sport(geneve_port->gs->sock->sk);
- if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, ntohs(dst_port)))
+ if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, geneve_port->port_no))
return -EMSGSIZE;
return 0;
}
-static void geneve_tnl_destroy(struct vport *vport)
+static int geneve_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
+ struct dp_upcall_info *upcall)
{
struct geneve_port *geneve_port = geneve_vport(vport);
+ struct net *net = ovs_dp_get_net(vport->dp);
+ __be16 dport = htons(geneve_port->port_no);
+ __be16 sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
- geneve_sock_release(geneve_port->gs);
-
- ovs_vport_deferred_free(vport);
+ return ovs_tunnel_get_egress_info(upcall, ovs_dp_get_net(vport->dp),
+ skb, IPPROTO_UDP, sport, dport);
}
static struct vport *geneve_tnl_create(const struct vport_parms *parms)
struct net *net = ovs_dp_get_net(parms->dp);
struct nlattr *options = parms->options;
struct geneve_port *geneve_port;
- struct geneve_sock *gs;
+ struct net_device *dev;
struct vport *vport;
struct nlattr *a;
- int err;
u16 dst_port;
+ int err;
if (!options) {
err = -EINVAL;
return vport;
geneve_port = geneve_vport(vport);
- strncpy(geneve_port->name, parms->name, IFNAMSIZ);
+ geneve_port->port_no = dst_port;
- gs = geneve_sock_add(net, htons(dst_port), geneve_rcv, vport, true, 0);
- if (IS_ERR(gs)) {
+ rtnl_lock();
+ dev = geneve_dev_create_fb(net, parms->name, NET_NAME_USER, dst_port);
+ if (IS_ERR(dev)) {
+ rtnl_unlock();
ovs_vport_free(vport);
- return (void *)gs;
+ return ERR_CAST(dev);
}
- geneve_port->gs = gs;
+ dev_change_flags(dev, dev->flags | IFF_UP);
+ rtnl_unlock();
return vport;
error:
return ERR_PTR(err);
}
-static int geneve_tnl_send(struct vport *vport, struct sk_buff *skb)
-{
- const struct ovs_key_ipv4_tunnel *tun_key;
- struct ovs_tunnel_info *tun_info;
- struct net *net = ovs_dp_get_net(vport->dp);
- struct geneve_port *geneve_port = geneve_vport(vport);
- __be16 dport = inet_sport(geneve_port->gs->sock->sk);
- __be16 sport;
- __be32 saddr;
- struct rtable *rt;
- u8 vni[3], opts_len, *opts;
- __be16 df;
- int err;
-
- tun_info = OVS_CB(skb)->egress_tun_info;
- if (unlikely(!tun_info)) {
- err = -EINVAL;
- goto error;
- }
-
- tun_key = &tun_info->tunnel;
-
- saddr = tun_key->ipv4_src;
- rt = find_route(ovs_dp_get_net(vport->dp),
- &saddr, tun_key->ipv4_dst,
- IPPROTO_UDP, tun_key->ipv4_tos,
- skb->mark);
- if (IS_ERR(rt)) {
- err = PTR_ERR(rt);
- goto error;
- }
-
- df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;
- sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
- tunnel_id_to_vni(tun_key->tun_id, vni);
- skb->ignore_df = 1;
-
- if (tun_key->tun_flags & TUNNEL_GENEVE_OPT) {
- opts = (u8 *)tun_info->options;
- opts_len = tun_info->options_len;
- } else {
- opts = NULL;
- opts_len = 0;
- }
-
- err = geneve_xmit_skb(geneve_port->gs, rt, skb, saddr,
- tun_key->ipv4_dst, tun_key->ipv4_tos,
- tun_key->ipv4_ttl, df, sport, dport,
- tun_key->tun_flags, vni, opts_len, opts,
- !!(tun_key->tun_flags & TUNNEL_CSUM), false);
- if (err < 0)
- ip_rt_put(rt);
- return err;
-
-error:
- kfree_skb(skb);
- return err;
-}
-
-static const char *geneve_get_name(const struct vport *vport)
+static struct vport *geneve_create(const struct vport_parms *parms)
{
- struct geneve_port *geneve_port = geneve_vport(vport);
-
- return geneve_port->name;
-}
+ struct vport *vport;
-static int geneve_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
- struct ovs_tunnel_info *egress_tun_info)
-{
- struct geneve_port *geneve_port = geneve_vport(vport);
- struct net *net = ovs_dp_get_net(vport->dp);
- __be16 dport = inet_sport(geneve_port->gs->sock->sk);
- __be16 sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
+ vport = geneve_tnl_create(parms);
+ if (IS_ERR(vport))
+ return vport;
- /* Get tp_src and tp_dst, refert to geneve_build_header().
- */
- return ovs_tunnel_get_egress_info(egress_tun_info,
- ovs_dp_get_net(vport->dp),
- OVS_CB(skb)->egress_tun_info,
- IPPROTO_UDP, skb->mark, sport, dport);
+ return ovs_netdev_link(vport, parms->name);
}
static struct vport_ops ovs_geneve_vport_ops = {
- .type = OVS_VPORT_TYPE_GENEVE,
- .create = geneve_tnl_create,
- .destroy = geneve_tnl_destroy,
- .get_name = geneve_get_name,
- .get_options = geneve_get_options,
- .send = geneve_tnl_send,
+ .type = OVS_VPORT_TYPE_GENEVE,
+ .create = geneve_create,
+ .destroy = ovs_netdev_tunnel_destroy,
+ .get_options = geneve_get_options,
+ .send = geneve_xmit,
+ .owner = THIS_MODULE,
.get_egress_tun_info = geneve_get_egress_tun_info,
- .owner = THIS_MODULE,
};
static int __init ovs_geneve_tnl_init(void)
module_init(ovs_geneve_tnl_init);
module_exit(ovs_geneve_tnl_exit);
-MODULE_DESCRIPTION("OVS: Geneve swiching port");
+MODULE_DESCRIPTION("OVS: Geneve switching port");
MODULE_LICENSE("GPL");
MODULE_ALIAS("vport-type-5");
projects / cascardo / ovs.git / blobdiff