mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
vxlan: Refactor vxlan driver to make use of the common UDP tunnel functions.
Simplify vxlan implementation using common UDP tunnel APIs. Signed-off-by: Andy Zhou <azhou@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Zhou
David S. Miller
parent
6a93cc9052
commit
acbf74a763
1 changed files with 22 additions and 83 deletions
|
|
@ -42,6 +42,7 @@
|
|||
#include <net/netns/generic.h>
|
||||
#include <net/vxlan.h>
|
||||
#include <net/protocol.h>
|
||||
#include <net/udp_tunnel.h>
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
#include <net/ipv6.h>
|
||||
#include <net/addrconf.h>
|
||||
|
|
@ -1062,7 +1063,6 @@ void vxlan_sock_release(struct vxlan_sock *vs)
|
|||
|
||||
spin_lock(&vn->sock_lock);
|
||||
hlist_del_rcu(&vs->hlist);
|
||||
rcu_assign_sk_user_data(vs->sock->sk, NULL);
|
||||
vxlan_notify_del_rx_port(vs);
|
||||
spin_unlock(&vn->sock_lock);
|
||||
|
||||
|
|
@ -1336,7 +1336,6 @@ static int arp_reduce(struct net_device *dev, struct sk_buff *skb)
|
|||
}
|
||||
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
|
||||
static struct sk_buff *vxlan_na_create(struct sk_buff *request,
|
||||
struct neighbour *n, bool isrouter)
|
||||
{
|
||||
|
|
@ -1570,13 +1569,6 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb)
|
|||
return false;
|
||||
}
|
||||
|
||||
static inline struct sk_buff *vxlan_handle_offloads(struct sk_buff *skb,
|
||||
bool udp_csum)
|
||||
{
|
||||
int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
|
||||
return iptunnel_handle_offloads(skb, udp_csum, type);
|
||||
}
|
||||
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
static int vxlan6_xmit_skb(struct vxlan_sock *vs,
|
||||
struct dst_entry *dst, struct sk_buff *skb,
|
||||
|
|
@ -1585,13 +1577,12 @@ static int vxlan6_xmit_skb(struct vxlan_sock *vs,
|
|||
__be16 src_port, __be16 dst_port, __be32 vni,
|
||||
bool xnet)
|
||||
{
|
||||
struct ipv6hdr *ip6h;
|
||||
struct vxlanhdr *vxh;
|
||||
struct udphdr *uh;
|
||||
int min_headroom;
|
||||
int err;
|
||||
bool udp_sum = !udp_get_no_check6_tx(vs->sock->sk);
|
||||
|
||||
skb = vxlan_handle_offloads(skb, !udp_get_no_check6_tx(vs->sock->sk));
|
||||
skb = udp_tunnel_handle_offloads(skb, udp_sum);
|
||||
if (IS_ERR(skb))
|
||||
return -EINVAL;
|
||||
|
||||
|
|
@ -1619,38 +1610,8 @@ static int vxlan6_xmit_skb(struct vxlan_sock *vs,
|
|||
vxh->vx_flags = htonl(VXLAN_FLAGS);
|
||||
vxh->vx_vni = vni;
|
||||
|
||||
__skb_push(skb, sizeof(*uh));
|
||||
skb_reset_transport_header(skb);
|
||||
uh = udp_hdr(skb);
|
||||
|
||||
uh->dest = dst_port;
|
||||
uh->source = src_port;
|
||||
|
||||
uh->len = htons(skb->len);
|
||||
|
||||
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
|
||||
IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
|
||||
IPSKB_REROUTED);
|
||||
skb_dst_set(skb, dst);
|
||||
|
||||
udp6_set_csum(udp_get_no_check6_tx(vs->sock->sk), skb,
|
||||
saddr, daddr, skb->len);
|
||||
|
||||
__skb_push(skb, sizeof(*ip6h));
|
||||
skb_reset_network_header(skb);
|
||||
ip6h = ipv6_hdr(skb);
|
||||
ip6h->version = 6;
|
||||
ip6h->priority = prio;
|
||||
ip6h->flow_lbl[0] = 0;
|
||||
ip6h->flow_lbl[1] = 0;
|
||||
ip6h->flow_lbl[2] = 0;
|
||||
ip6h->payload_len = htons(skb->len);
|
||||
ip6h->nexthdr = IPPROTO_UDP;
|
||||
ip6h->hop_limit = ttl;
|
||||
ip6h->daddr = *daddr;
|
||||
ip6h->saddr = *saddr;
|
||||
|
||||
ip6tunnel_xmit(skb, dev);
|
||||
udp_tunnel6_xmit_skb(vs->sock, dst, skb, dev, saddr, daddr, prio,
|
||||
ttl, src_port, dst_port);
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
|
@ -1661,11 +1622,11 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
|
|||
__be16 src_port, __be16 dst_port, __be32 vni, bool xnet)
|
||||
{
|
||||
struct vxlanhdr *vxh;
|
||||
struct udphdr *uh;
|
||||
int min_headroom;
|
||||
int err;
|
||||
bool udp_sum = !vs->sock->sk->sk_no_check_tx;
|
||||
|
||||
skb = vxlan_handle_offloads(skb, !vs->sock->sk->sk_no_check_tx);
|
||||
skb = udp_tunnel_handle_offloads(skb, udp_sum);
|
||||
if (IS_ERR(skb))
|
||||
return -EINVAL;
|
||||
|
||||
|
|
@ -1691,20 +1652,8 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
|
|||
vxh->vx_flags = htonl(VXLAN_FLAGS);
|
||||
vxh->vx_vni = vni;
|
||||
|
||||
__skb_push(skb, sizeof(*uh));
|
||||
skb_reset_transport_header(skb);
|
||||
uh = udp_hdr(skb);
|
||||
|
||||
uh->dest = dst_port;
|
||||
uh->source = src_port;
|
||||
|
||||
uh->len = htons(skb->len);
|
||||
|
||||
udp_set_csum(vs->sock->sk->sk_no_check_tx, skb,
|
||||
src, dst, skb->len);
|
||||
|
||||
return iptunnel_xmit(vs->sock->sk, rt, skb, src, dst, IPPROTO_UDP,
|
||||
tos, ttl, df, xnet);
|
||||
return udp_tunnel_xmit_skb(vs->sock, rt, skb, src, dst, tos,
|
||||
ttl, df, src_port, dst_port, xnet);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(vxlan_xmit_skb);
|
||||
|
||||
|
|
@ -1829,11 +1778,11 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
|
|||
tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
|
||||
ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);
|
||||
|
||||
err = vxlan_xmit_skb(vxlan->vn_sock, rt, skb,
|
||||
fl4.saddr, dst->sin.sin_addr.s_addr,
|
||||
tos, ttl, df, src_port, dst_port,
|
||||
htonl(vni << 8),
|
||||
!net_eq(vxlan->net, dev_net(vxlan->dev)));
|
||||
err = udp_tunnel_xmit_skb(vxlan->vn_sock->sock, rt, skb,
|
||||
fl4.saddr, dst->sin.sin_addr.s_addr,
|
||||
tos, ttl, df, src_port, dst_port,
|
||||
!net_eq(vxlan->net,
|
||||
dev_net(vxlan->dev)));
|
||||
|
||||
if (err < 0)
|
||||
goto rt_tx_error;
|
||||
|
|
@ -2333,8 +2282,7 @@ static const struct ethtool_ops vxlan_ethtool_ops = {
|
|||
static void vxlan_del_work(struct work_struct *work)
|
||||
{
|
||||
struct vxlan_sock *vs = container_of(work, struct vxlan_sock, del_work);
|
||||
|
||||
sk_release_kernel(vs->sock->sk);
|
||||
udp_tunnel_sock_release(vs->sock);
|
||||
kfree_rcu(vs, rcu);
|
||||
}
|
||||
|
||||
|
|
@ -2367,11 +2315,6 @@ static struct socket *vxlan_create_sock(struct net *net, bool ipv6,
|
|||
if (err < 0)
|
||||
return ERR_PTR(err);
|
||||
|
||||
/* Disable multicast loopback */
|
||||
inet_sk(sock->sk)->mc_loop = 0;
|
||||
|
||||
udp_set_convert_csum(sock->sk, true);
|
||||
|
||||
return sock;
|
||||
}
|
||||
|
||||
|
|
@ -2383,9 +2326,9 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
|
|||
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
|
||||
struct vxlan_sock *vs;
|
||||
struct socket *sock;
|
||||
struct sock *sk;
|
||||
unsigned int h;
|
||||
bool ipv6 = !!(flags & VXLAN_F_IPV6);
|
||||
struct udp_tunnel_sock_cfg tunnel_cfg;
|
||||
|
||||
vs = kzalloc(sizeof(*vs), GFP_KERNEL);
|
||||
if (!vs)
|
||||
|
|
@ -2403,11 +2346,9 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
|
|||
}
|
||||
|
||||
vs->sock = sock;
|
||||
sk = sock->sk;
|
||||
atomic_set(&vs->refcnt, 1);
|
||||
vs->rcv = rcv;
|
||||
vs->data = data;
|
||||
rcu_assign_sk_user_data(vs->sock->sk, vs);
|
||||
|
||||
/* Initialize the vxlan udp offloads structure */
|
||||
vs->udp_offloads.port = port;
|
||||
|
|
@ -2420,14 +2361,12 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
|
|||
spin_unlock(&vn->sock_lock);
|
||||
|
||||
/* Mark socket as an encapsulation socket. */
|
||||
udp_sk(sk)->encap_type = 1;
|
||||
udp_sk(sk)->encap_rcv = vxlan_udp_encap_recv;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (ipv6)
|
||||
ipv6_stub->udpv6_encap_enable();
|
||||
else
|
||||
#endif
|
||||
udp_encap_enable();
|
||||
tunnel_cfg.sk_user_data = vs;
|
||||
tunnel_cfg.encap_type = 1;
|
||||
tunnel_cfg.encap_rcv = vxlan_udp_encap_recv;
|
||||
tunnel_cfg.encap_destroy = NULL;
|
||||
|
||||
setup_udp_tunnel_sock(net, sock, &tunnel_cfg);
|
||||
|
||||
return vs;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue