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path: root/drivers/net/vxlan.c
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Diffstat (limited to 'drivers/net/vxlan.c')
-rw-r--r--drivers/net/vxlan.c146
1 files changed, 29 insertions, 117 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index ade33ef8282..1fb7b37d140 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>
@@ -339,7 +340,7 @@ static int vxlan_fdb_info(struct sk_buff *skb, struct vxlan_dev *vxlan,
ndm->ndm_state = fdb->state;
ndm->ndm_ifindex = vxlan->dev->ifindex;
ndm->ndm_flags = fdb->flags;
- ndm->ndm_type = NDA_DST;
+ ndm->ndm_type = RTN_UNICAST;
if (send_eth && nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->eth_addr))
goto nla_put_failure;
@@ -933,7 +934,8 @@ out:
/* Dump forwarding table */
static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
- struct net_device *dev, int idx)
+ struct net_device *dev,
+ struct net_device *filter_dev, int idx)
{
struct vxlan_dev *vxlan = netdev_priv(dev);
unsigned int h;
@@ -1570,25 +1572,6 @@ static bool route_shortcircuit(struct net_device *dev, struct sk_buff *skb)
return false;
}
-/* Compute source port for outgoing packet
- * first choice to use L4 flow hash since it will spread
- * better and maybe available from hardware
- * secondary choice is to use jhash on the Ethernet header
- */
-__be16 vxlan_src_port(__u16 port_min, __u16 port_max, struct sk_buff *skb)
-{
- unsigned int range = (port_max - port_min) + 1;
- u32 hash;
-
- hash = skb_get_hash(skb);
- if (!hash)
- hash = jhash(skb->data, 2 * ETH_ALEN,
- (__force u32) skb->protocol);
-
- return htons((((u64) hash * range) >> 32) + port_min);
-}
-EXPORT_SYMBOL_GPL(vxlan_src_port);
-
static inline struct sk_buff *vxlan_handle_offloads(struct sk_buff *skb,
bool udp_csum)
{
@@ -1807,7 +1790,8 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
if (tos == 1)
tos = ip_tunnel_get_dsfield(old_iph, skb);
- src_port = vxlan_src_port(vxlan->port_min, vxlan->port_max, skb);
+ src_port = udp_flow_src_port(dev_net(dev), skb, vxlan->port_min,
+ vxlan->port_max, true);
if (dst->sa.sa_family == AF_INET) {
memset(&fl4, 0, sizeof(fl4));
@@ -2235,7 +2219,6 @@ static void vxlan_setup(struct net_device *dev)
{
struct vxlan_dev *vxlan = netdev_priv(dev);
unsigned int h;
- int low, high;
eth_hw_addr_random(dev);
ether_setup(dev);
@@ -2272,9 +2255,6 @@ static void vxlan_setup(struct net_device *dev)
vxlan->age_timer.function = vxlan_cleanup;
vxlan->age_timer.data = (unsigned long) vxlan;
- inet_get_local_port_range(dev_net(dev), &low, &high);
- vxlan->port_min = low;
- vxlan->port_max = high;
vxlan->dst_port = htons(vxlan_port);
vxlan->dev = dev;
@@ -2360,102 +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
-
-static struct socket *create_v6_sock(struct net *net, __be16 port, u32 flags)
-{
- return ERR_PTR(-EPFNOSUPPORT);
-}
-#endif
+ struct udp_port_cfg udp_conf;
+ int err;
-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;
+ memset(&udp_conf, 0, sizeof(udp_conf));
- /* 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;
}
@@ -2481,10 +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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-11 19:29:02 +0000