mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 03:16:40 +07:00
Merge branch 'udp-tunnel-common'
Andy Zhou says: ==================== Refactor vxlan and l2tp to use new common UDP tunnel APIs This patch series add a few more UDP tunnel APIs and refactoring current UDP tunnel based protocols, vxlan and l2tp to make use of the new APIs. The added APIs are setup_udp_tunnel_sock(), udp_tunnel_xmit_skb() and udp_tunnel_sock_release(). Those implementation logics already exist in current vxlan and l2tp implementation. Move them to common APIs to reduce code duplications. Also split udp_tunnel.c into net/ipv4/udp_tunnel.c and net/ipv6/ip6_udp_tunnel.c to maintain proper IP protocol separation. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
commit
3ff6425961
@ -42,6 +42,7 @@
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#include <net/netns/generic.h>
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#include <net/vxlan.h>
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#include <net/protocol.h>
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#include <net/udp_tunnel.h>
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#if IS_ENABLED(CONFIG_IPV6)
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#include <net/ipv6.h>
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#include <net/addrconf.h>
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@ -1062,7 +1063,6 @@ void vxlan_sock_release(struct vxlan_sock *vs)
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spin_lock(&vn->sock_lock);
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hlist_del_rcu(&vs->hlist);
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rcu_assign_sk_user_data(vs->sock->sk, NULL);
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vxlan_notify_del_rx_port(vs);
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spin_unlock(&vn->sock_lock);
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@ -1336,7 +1336,6 @@ static int arp_reduce(struct net_device *dev, struct sk_buff *skb)
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}
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#if IS_ENABLED(CONFIG_IPV6)
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static struct sk_buff *vxlan_na_create(struct sk_buff *request,
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struct neighbour *n, bool isrouter)
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{
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@ -1570,13 +1569,6 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb)
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return false;
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}
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static inline struct sk_buff *vxlan_handle_offloads(struct sk_buff *skb,
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bool udp_csum)
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{
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int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
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return iptunnel_handle_offloads(skb, udp_csum, type);
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}
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#if IS_ENABLED(CONFIG_IPV6)
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static int vxlan6_xmit_skb(struct vxlan_sock *vs,
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struct dst_entry *dst, struct sk_buff *skb,
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@ -1585,13 +1577,12 @@ static int vxlan6_xmit_skb(struct vxlan_sock *vs,
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__be16 src_port, __be16 dst_port, __be32 vni,
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bool xnet)
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{
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struct ipv6hdr *ip6h;
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struct vxlanhdr *vxh;
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struct udphdr *uh;
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int min_headroom;
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int err;
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bool udp_sum = !udp_get_no_check6_tx(vs->sock->sk);
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skb = vxlan_handle_offloads(skb, !udp_get_no_check6_tx(vs->sock->sk));
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skb = udp_tunnel_handle_offloads(skb, udp_sum);
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if (IS_ERR(skb))
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return -EINVAL;
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@ -1619,38 +1610,8 @@ static int vxlan6_xmit_skb(struct vxlan_sock *vs,
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vxh->vx_flags = htonl(VXLAN_FLAGS);
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vxh->vx_vni = vni;
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__skb_push(skb, sizeof(*uh));
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skb_reset_transport_header(skb);
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uh = udp_hdr(skb);
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uh->dest = dst_port;
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uh->source = src_port;
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uh->len = htons(skb->len);
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memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
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IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
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IPSKB_REROUTED);
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skb_dst_set(skb, dst);
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udp6_set_csum(udp_get_no_check6_tx(vs->sock->sk), skb,
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saddr, daddr, skb->len);
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__skb_push(skb, sizeof(*ip6h));
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skb_reset_network_header(skb);
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ip6h = ipv6_hdr(skb);
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ip6h->version = 6;
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ip6h->priority = prio;
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ip6h->flow_lbl[0] = 0;
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ip6h->flow_lbl[1] = 0;
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ip6h->flow_lbl[2] = 0;
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ip6h->payload_len = htons(skb->len);
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ip6h->nexthdr = IPPROTO_UDP;
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ip6h->hop_limit = ttl;
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ip6h->daddr = *daddr;
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ip6h->saddr = *saddr;
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ip6tunnel_xmit(skb, dev);
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udp_tunnel6_xmit_skb(vs->sock, dst, skb, dev, saddr, daddr, prio,
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ttl, src_port, dst_port);
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return 0;
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}
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#endif
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@ -1661,11 +1622,11 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
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__be16 src_port, __be16 dst_port, __be32 vni, bool xnet)
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{
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struct vxlanhdr *vxh;
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struct udphdr *uh;
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int min_headroom;
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int err;
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bool udp_sum = !vs->sock->sk->sk_no_check_tx;
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skb = vxlan_handle_offloads(skb, !vs->sock->sk->sk_no_check_tx);
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skb = udp_tunnel_handle_offloads(skb, udp_sum);
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if (IS_ERR(skb))
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return -EINVAL;
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@ -1691,20 +1652,8 @@ int vxlan_xmit_skb(struct vxlan_sock *vs,
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vxh->vx_flags = htonl(VXLAN_FLAGS);
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vxh->vx_vni = vni;
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__skb_push(skb, sizeof(*uh));
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skb_reset_transport_header(skb);
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uh = udp_hdr(skb);
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uh->dest = dst_port;
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uh->source = src_port;
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uh->len = htons(skb->len);
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udp_set_csum(vs->sock->sk->sk_no_check_tx, skb,
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src, dst, skb->len);
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return iptunnel_xmit(vs->sock->sk, rt, skb, src, dst, IPPROTO_UDP,
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tos, ttl, df, xnet);
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return udp_tunnel_xmit_skb(vs->sock, rt, skb, src, dst, tos,
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ttl, df, src_port, dst_port, xnet);
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}
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EXPORT_SYMBOL_GPL(vxlan_xmit_skb);
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@ -1829,11 +1778,11 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
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tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
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ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);
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err = vxlan_xmit_skb(vxlan->vn_sock, rt, skb,
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fl4.saddr, dst->sin.sin_addr.s_addr,
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tos, ttl, df, src_port, dst_port,
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htonl(vni << 8),
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!net_eq(vxlan->net, dev_net(vxlan->dev)));
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err = udp_tunnel_xmit_skb(vxlan->vn_sock->sock, rt, skb,
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fl4.saddr, dst->sin.sin_addr.s_addr,
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tos, ttl, df, src_port, dst_port,
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!net_eq(vxlan->net,
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dev_net(vxlan->dev)));
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if (err < 0)
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goto rt_tx_error;
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@ -2333,8 +2282,7 @@ static const struct ethtool_ops vxlan_ethtool_ops = {
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static void vxlan_del_work(struct work_struct *work)
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{
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struct vxlan_sock *vs = container_of(work, struct vxlan_sock, del_work);
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sk_release_kernel(vs->sock->sk);
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udp_tunnel_sock_release(vs->sock);
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kfree_rcu(vs, rcu);
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}
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@ -2367,11 +2315,6 @@ static struct socket *vxlan_create_sock(struct net *net, bool ipv6,
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if (err < 0)
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return ERR_PTR(err);
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/* Disable multicast loopback */
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inet_sk(sock->sk)->mc_loop = 0;
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udp_set_convert_csum(sock->sk, true);
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return sock;
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}
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@ -2383,9 +2326,9 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
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struct vxlan_net *vn = net_generic(net, vxlan_net_id);
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struct vxlan_sock *vs;
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struct socket *sock;
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struct sock *sk;
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unsigned int h;
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bool ipv6 = !!(flags & VXLAN_F_IPV6);
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struct udp_tunnel_sock_cfg tunnel_cfg;
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vs = kzalloc(sizeof(*vs), GFP_KERNEL);
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if (!vs)
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@ -2403,11 +2346,9 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
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}
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vs->sock = sock;
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sk = sock->sk;
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atomic_set(&vs->refcnt, 1);
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vs->rcv = rcv;
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vs->data = data;
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rcu_assign_sk_user_data(vs->sock->sk, vs);
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/* Initialize the vxlan udp offloads structure */
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vs->udp_offloads.port = port;
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@ -2420,14 +2361,12 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
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spin_unlock(&vn->sock_lock);
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/* Mark socket as an encapsulation socket. */
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udp_sk(sk)->encap_type = 1;
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udp_sk(sk)->encap_rcv = vxlan_udp_encap_recv;
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#if IS_ENABLED(CONFIG_IPV6)
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if (ipv6)
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ipv6_stub->udpv6_encap_enable();
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else
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#endif
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udp_encap_enable();
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tunnel_cfg.sk_user_data = vs;
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tunnel_cfg.encap_type = 1;
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tunnel_cfg.encap_rcv = vxlan_udp_encap_recv;
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tunnel_cfg.encap_destroy = NULL;
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setup_udp_tunnel_sock(net, sock, &tunnel_cfg);
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return vs;
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}
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@ -1,6 +1,14 @@
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#ifndef __NET_UDP_TUNNEL_H
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#define __NET_UDP_TUNNEL_H
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#include <net/ip_tunnels.h>
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#include <net/udp.h>
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#if IS_ENABLED(CONFIG_IPV6)
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#include <net/ipv6.h>
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#include <net/addrconf.h>
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#endif
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struct udp_port_cfg {
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u8 family;
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@ -26,7 +34,80 @@ struct udp_port_cfg {
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use_udp6_rx_checksums:1;
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};
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int udp_sock_create(struct net *net, struct udp_port_cfg *cfg,
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struct socket **sockp);
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int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
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struct socket **sockp);
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#if IS_ENABLED(CONFIG_IPV6)
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int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
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struct socket **sockp);
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#else
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static inline int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
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struct socket **sockp)
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{
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return 0;
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}
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#endif
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static inline int udp_sock_create(struct net *net,
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struct udp_port_cfg *cfg,
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struct socket **sockp)
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{
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if (cfg->family == AF_INET)
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return udp_sock_create4(net, cfg, sockp);
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if (cfg->family == AF_INET6)
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return udp_sock_create6(net, cfg, sockp);
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return -EPFNOSUPPORT;
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}
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typedef int (*udp_tunnel_encap_rcv_t)(struct sock *sk, struct sk_buff *skb);
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typedef void (*udp_tunnel_encap_destroy_t)(struct sock *sk);
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struct udp_tunnel_sock_cfg {
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void *sk_user_data; /* user data used by encap_rcv call back */
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/* Used for setting up udp_sock fields, see udp.h for details */
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__u8 encap_type;
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udp_tunnel_encap_rcv_t encap_rcv;
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udp_tunnel_encap_destroy_t encap_destroy;
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};
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/* Setup the given (UDP) sock to receive UDP encapsulated packets */
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void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
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struct udp_tunnel_sock_cfg *sock_cfg);
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/* Transmit the skb using UDP encapsulation. */
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int udp_tunnel_xmit_skb(struct socket *sock, struct rtable *rt,
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struct sk_buff *skb, __be32 src, __be32 dst,
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__u8 tos, __u8 ttl, __be16 df, __be16 src_port,
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__be16 dst_port, bool xnet);
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#if IS_ENABLED(CONFIG_IPV6)
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int udp_tunnel6_xmit_skb(struct socket *sock, struct dst_entry *dst,
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struct sk_buff *skb, struct net_device *dev,
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struct in6_addr *saddr, struct in6_addr *daddr,
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__u8 prio, __u8 ttl, __be16 src_port,
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__be16 dst_port);
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#endif
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|
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void udp_tunnel_sock_release(struct socket *sock);
|
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|
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static inline struct sk_buff *udp_tunnel_handle_offloads(struct sk_buff *skb,
|
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bool udp_csum)
|
||||
{
|
||||
int type = udp_csum ? SKB_GSO_UDP_TUNNEL_CSUM : SKB_GSO_UDP_TUNNEL;
|
||||
|
||||
return iptunnel_handle_offloads(skb, udp_csum, type);
|
||||
}
|
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|
||||
static inline void udp_tunnel_encap_enable(struct socket *sock)
|
||||
{
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (sock->sk->sk_family == PF_INET6)
|
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ipv6_stub->udpv6_encap_enable();
|
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else
|
||||
#endif
|
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udp_encap_enable();
|
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}
|
||||
|
||||
#endif
|
||||
|
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@ -8,83 +8,40 @@
|
||||
#include <net/udp_tunnel.h>
|
||||
#include <net/net_namespace.h>
|
||||
|
||||
int udp_sock_create(struct net *net, struct udp_port_cfg *cfg,
|
||||
struct socket **sockp)
|
||||
int udp_sock_create4(struct net *net, struct udp_port_cfg *cfg,
|
||||
struct socket **sockp)
|
||||
{
|
||||
int err = -EINVAL;
|
||||
int err;
|
||||
struct socket *sock = NULL;
|
||||
struct sockaddr_in udp_addr;
|
||||
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (cfg->family == AF_INET6) {
|
||||
struct sockaddr_in6 udp6_addr;
|
||||
err = sock_create_kern(AF_INET, SOCK_DGRAM, 0, &sock);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
err = sock_create_kern(AF_INET6, SOCK_DGRAM, 0, &sock);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
sk_change_net(sock->sk, net);
|
||||
|
||||
sk_change_net(sock->sk, net);
|
||||
|
||||
udp6_addr.sin6_family = AF_INET6;
|
||||
memcpy(&udp6_addr.sin6_addr, &cfg->local_ip6,
|
||||
sizeof(udp6_addr.sin6_addr));
|
||||
udp6_addr.sin6_port = cfg->local_udp_port;
|
||||
err = kernel_bind(sock, (struct sockaddr *)&udp6_addr,
|
||||
sizeof(udp6_addr));
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
if (cfg->peer_udp_port) {
|
||||
udp6_addr.sin6_family = AF_INET6;
|
||||
memcpy(&udp6_addr.sin6_addr, &cfg->peer_ip6,
|
||||
sizeof(udp6_addr.sin6_addr));
|
||||
udp6_addr.sin6_port = cfg->peer_udp_port;
|
||||
err = kernel_connect(sock,
|
||||
(struct sockaddr *)&udp6_addr,
|
||||
sizeof(udp6_addr), 0);
|
||||
}
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
udp_set_no_check6_tx(sock->sk, !cfg->use_udp6_tx_checksums);
|
||||
udp_set_no_check6_rx(sock->sk, !cfg->use_udp6_rx_checksums);
|
||||
} else
|
||||
#endif
|
||||
if (cfg->family == AF_INET) {
|
||||
struct sockaddr_in udp_addr;
|
||||
|
||||
err = sock_create_kern(AF_INET, SOCK_DGRAM, 0, &sock);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
sk_change_net(sock->sk, net);
|
||||
udp_addr.sin_family = AF_INET;
|
||||
udp_addr.sin_addr = cfg->local_ip;
|
||||
udp_addr.sin_port = cfg->local_udp_port;
|
||||
err = kernel_bind(sock, (struct sockaddr *)&udp_addr,
|
||||
sizeof(udp_addr));
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
if (cfg->peer_udp_port) {
|
||||
udp_addr.sin_family = AF_INET;
|
||||
udp_addr.sin_addr = cfg->local_ip;
|
||||
udp_addr.sin_port = cfg->local_udp_port;
|
||||
err = kernel_bind(sock, (struct sockaddr *)&udp_addr,
|
||||
sizeof(udp_addr));
|
||||
udp_addr.sin_addr = cfg->peer_ip;
|
||||
udp_addr.sin_port = cfg->peer_udp_port;
|
||||
err = kernel_connect(sock, (struct sockaddr *)&udp_addr,
|
||||
sizeof(udp_addr), 0);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
if (cfg->peer_udp_port) {
|
||||
udp_addr.sin_family = AF_INET;
|
||||
udp_addr.sin_addr = cfg->peer_ip;
|
||||
udp_addr.sin_port = cfg->peer_udp_port;
|
||||
err = kernel_connect(sock,
|
||||
(struct sockaddr *)&udp_addr,
|
||||
sizeof(udp_addr), 0);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
}
|
||||
|
||||
sock->sk->sk_no_check_tx = !cfg->use_udp_checksums;
|
||||
} else {
|
||||
return -EPFNOSUPPORT;
|
||||
}
|
||||
|
||||
sock->sk->sk_no_check_tx = !cfg->use_udp_checksums;
|
||||
|
||||
*sockp = sock;
|
||||
|
||||
return 0;
|
||||
|
||||
error:
|
||||
@ -95,6 +52,57 @@ int udp_sock_create(struct net *net, struct udp_port_cfg *cfg,
|
||||
*sockp = NULL;
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL(udp_sock_create);
|
||||
EXPORT_SYMBOL(udp_sock_create4);
|
||||
|
||||
void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
|
||||
struct udp_tunnel_sock_cfg *cfg)
|
||||
{
|
||||
struct sock *sk = sock->sk;
|
||||
|
||||
/* Disable multicast loopback */
|
||||
inet_sk(sk)->mc_loop = 0;
|
||||
|
||||
/* Enable CHECKSUM_UNNECESSARY to CHECKSUM_COMPLETE conversion */
|
||||
udp_set_convert_csum(sk, true);
|
||||
|
||||
rcu_assign_sk_user_data(sk, cfg->sk_user_data);
|
||||
|
||||
udp_sk(sk)->encap_type = cfg->encap_type;
|
||||
udp_sk(sk)->encap_rcv = cfg->encap_rcv;
|
||||
udp_sk(sk)->encap_destroy = cfg->encap_destroy;
|
||||
|
||||
udp_tunnel_encap_enable(sock);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(setup_udp_tunnel_sock);
|
||||
|
||||
int udp_tunnel_xmit_skb(struct socket *sock, struct rtable *rt,
|
||||
struct sk_buff *skb, __be32 src, __be32 dst,
|
||||
__u8 tos, __u8 ttl, __be16 df, __be16 src_port,
|
||||
__be16 dst_port, bool xnet)
|
||||
{
|
||||
struct udphdr *uh;
|
||||
|
||||
__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(sock->sk->sk_no_check_tx, skb, src, dst, skb->len);
|
||||
|
||||
return iptunnel_xmit(sock->sk, rt, skb, src, dst, IPPROTO_UDP,
|
||||
tos, ttl, df, xnet);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(udp_tunnel_xmit_skb);
|
||||
|
||||
void udp_tunnel_sock_release(struct socket *sock)
|
||||
{
|
||||
rcu_assign_sk_user_data(sock->sk, NULL);
|
||||
kernel_sock_shutdown(sock, SHUT_RDWR);
|
||||
sk_release_kernel(sock->sk);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(udp_tunnel_sock_release);
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
@ -35,6 +35,7 @@ obj-$(CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION) += xfrm6_mode_ro.o
|
||||
obj-$(CONFIG_INET6_XFRM_MODE_BEET) += xfrm6_mode_beet.o
|
||||
obj-$(CONFIG_IPV6_MIP6) += mip6.o
|
||||
obj-$(CONFIG_NETFILTER) += netfilter/
|
||||
obj-$(CONFIG_NET_UDP_TUNNEL) += ip6_udp_tunnel.o
|
||||
|
||||
obj-$(CONFIG_IPV6_VTI) += ip6_vti.o
|
||||
obj-$(CONFIG_IPV6_SIT) += sit.o
|
||||
|
||||
105
net/ipv6/ip6_udp_tunnel.c
Normal file
105
net/ipv6/ip6_udp_tunnel.c
Normal file
@ -0,0 +1,105 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/socket.h>
|
||||
#include <linux/udp.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/in6.h>
|
||||
#include <net/udp.h>
|
||||
#include <net/udp_tunnel.h>
|
||||
#include <net/net_namespace.h>
|
||||
#include <net/netns/generic.h>
|
||||
#include <net/ip6_tunnel.h>
|
||||
#include <net/ip6_checksum.h>
|
||||
|
||||
int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg,
|
||||
struct socket **sockp)
|
||||
{
|
||||
struct sockaddr_in6 udp6_addr;
|
||||
int err;
|
||||
struct socket *sock = NULL;
|
||||
|
||||
err = sock_create_kern(AF_INET6, SOCK_DGRAM, 0, &sock);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
sk_change_net(sock->sk, net);
|
||||
|
||||
udp6_addr.sin6_family = AF_INET6;
|
||||
memcpy(&udp6_addr.sin6_addr, &cfg->local_ip6,
|
||||
sizeof(udp6_addr.sin6_addr));
|
||||
udp6_addr.sin6_port = cfg->local_udp_port;
|
||||
err = kernel_bind(sock, (struct sockaddr *)&udp6_addr,
|
||||
sizeof(udp6_addr));
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
if (cfg->peer_udp_port) {
|
||||
udp6_addr.sin6_family = AF_INET6;
|
||||
memcpy(&udp6_addr.sin6_addr, &cfg->peer_ip6,
|
||||
sizeof(udp6_addr.sin6_addr));
|
||||
udp6_addr.sin6_port = cfg->peer_udp_port;
|
||||
err = kernel_connect(sock,
|
||||
(struct sockaddr *)&udp6_addr,
|
||||
sizeof(udp6_addr), 0);
|
||||
}
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
udp_set_no_check6_tx(sock->sk, !cfg->use_udp6_tx_checksums);
|
||||
udp_set_no_check6_rx(sock->sk, !cfg->use_udp6_rx_checksums);
|
||||
|
||||
*sockp = sock;
|
||||
return 0;
|
||||
|
||||
error:
|
||||
if (sock) {
|
||||
kernel_sock_shutdown(sock, SHUT_RDWR);
|
||||
sk_release_kernel(sock->sk);
|
||||
}
|
||||
*sockp = NULL;
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(udp_sock_create6);
|
||||
|
||||
int udp_tunnel6_xmit_skb(struct socket *sock, struct dst_entry *dst,
|
||||
struct sk_buff *skb, struct net_device *dev,
|
||||
struct in6_addr *saddr, struct in6_addr *daddr,
|
||||
__u8 prio, __u8 ttl, __be16 src_port, __be16 dst_port)
|
||||
{
|
||||
struct udphdr *uh;
|
||||
struct ipv6hdr *ip6h;
|
||||
struct sock *sk = sock->sk;
|
||||
|
||||
__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);
|
||||
uh->check = 0;
|
||||
|
||||
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(sk), skb, &inet6_sk(sk)->saddr,
|
||||
&sk->sk_v6_daddr, skb->len);
|
||||
|
||||
__skb_push(skb, sizeof(*ip6h));
|
||||
skb_reset_network_header(skb);
|
||||
ip6h = ipv6_hdr(skb);
|
||||
ip6_flow_hdr(ip6h, prio, htonl(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);
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(udp_tunnel6_xmit_skb);
|
||||
@ -1392,8 +1392,6 @@ static int l2tp_tunnel_sock_create(struct net *net,
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
udp_set_convert_csum(sock->sk, true);
|
||||
|
||||
break;
|
||||
|
||||
case L2TP_ENCAPTYPE_IP:
|
||||
@ -1584,19 +1582,17 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32
|
||||
/* Mark socket as an encapsulation socket. See net/ipv4/udp.c */
|
||||
tunnel->encap = encap;
|
||||
if (encap == L2TP_ENCAPTYPE_UDP) {
|
||||
/* Mark socket as an encapsulation socket. See net/ipv4/udp.c */
|
||||
udp_sk(sk)->encap_type = UDP_ENCAP_L2TPINUDP;
|
||||
udp_sk(sk)->encap_rcv = l2tp_udp_encap_recv;
|
||||
udp_sk(sk)->encap_destroy = l2tp_udp_encap_destroy;
|
||||
#if IS_ENABLED(CONFIG_IPV6)
|
||||
if (sk->sk_family == PF_INET6 && !tunnel->v4mapped)
|
||||
udpv6_encap_enable();
|
||||
else
|
||||
#endif
|
||||
udp_encap_enable();
|
||||
}
|
||||
struct udp_tunnel_sock_cfg udp_cfg;
|
||||
|
||||
sk->sk_user_data = tunnel;
|
||||
udp_cfg.sk_user_data = tunnel;
|
||||
udp_cfg.encap_type = UDP_ENCAP_L2TPINUDP;
|
||||
udp_cfg.encap_rcv = l2tp_udp_encap_recv;
|
||||
udp_cfg.encap_destroy = l2tp_udp_encap_destroy;
|
||||
|
||||
setup_udp_tunnel_sock(net, sock, &udp_cfg);
|
||||
} else {
|
||||
sk->sk_user_data = tunnel;
|
||||
}
|
||||
|
||||
/* Hook on the tunnel socket destructor so that we can cleanup
|
||||
* if the tunnel socket goes away.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user