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Message-ID: <20160613174754.15186.37885.stgit@localhost.localdomain>
Date: Mon, 13 Jun 2016 10:47:54 -0700
From: Alexander Duyck <aduyck@...antis.com>
To: netdev@...r.kernel.org, intel-wired-lan@...ts.osuosl.org
Cc: hannes@...hat.com, jesse@...nel.org, jbenc@...hat.com,
alexander.duyck@...il.com, saeedm@...lanox.com,
ariel.elior@...gic.com, tom@...bertland.com,
Dept-GELinuxNICDev@...gic.com, davem@...emloft.net,
eugenia@...lanox.com
Subject: [net-next PATCH 01/15] net: Combine GENEVE and VXLAN port offload
notifiers into single functions
This patch merges the GENEVE and VXLAN code so that both functions pass
through a shared code path. This way we can start the effort of using a
single function on the network device drivers to handle both of these
tunnel offload types.
Signed-off-by: Alexander Duyck <aduyck@...antis.com>
---
drivers/net/geneve.c | 48 ++++-------------------------
drivers/net/vxlan.c | 46 ++++-----------------------
include/net/udp_tunnel.h | 12 +++++++
net/ipv4/udp_tunnel.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 103 insertions(+), 80 deletions(-)
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index cadefe4fdaa2..f5ce41532cf4 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -399,19 +399,7 @@ static struct socket *geneve_create_sock(struct net *net, bool ipv6,
static void geneve_notify_add_rx_port(struct geneve_sock *gs)
{
- struct net_device *dev;
- struct sock *sk = gs->sock->sk;
- struct net *net = sock_net(sk);
- sa_family_t sa_family = geneve_get_sk_family(gs);
- __be16 port = inet_sk(sk)->inet_sport;
-
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (dev->netdev_ops->ndo_add_geneve_port)
- dev->netdev_ops->ndo_add_geneve_port(dev, sa_family,
- port);
- }
- rcu_read_unlock();
+ udp_tunnel_notify_add_rx_port(gs->sock, UDP_ENC_OFFLOAD_TYPE_GENEVE);
}
static int geneve_hlen(struct genevehdr *gh)
@@ -550,20 +538,7 @@ static struct geneve_sock *geneve_socket_create(struct net *net, __be16 port,
static void geneve_notify_del_rx_port(struct geneve_sock *gs)
{
- struct net_device *dev;
- struct sock *sk = gs->sock->sk;
- struct net *net = sock_net(sk);
- sa_family_t sa_family = geneve_get_sk_family(gs);
- __be16 port = inet_sk(sk)->inet_sport;
-
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (dev->netdev_ops->ndo_del_geneve_port)
- dev->netdev_ops->ndo_del_geneve_port(dev, sa_family,
- port);
- }
-
- rcu_read_unlock();
+ udp_tunnel_notify_add_rx_port(gs->sock, UDP_ENC_OFFLOAD_TYPE_GENEVE);
}
static void __geneve_sock_release(struct geneve_sock *gs)
@@ -1165,29 +1140,20 @@ static struct device_type geneve_type = {
.name = "geneve",
};
-/* Calls the ndo_add_geneve_port of the caller in order to
+/* Calls the ndo_add_udp_enc_port of the caller in order to
* supply the listening GENEVE udp ports. Callers are expected
- * to implement the ndo_add_geneve_port.
+ * to implement the ndo_add_udp_enc_port.
*/
static void geneve_push_rx_ports(struct net_device *dev)
{
struct net *net = dev_net(dev);
struct geneve_net *gn = net_generic(net, geneve_net_id);
struct geneve_sock *gs;
- sa_family_t sa_family;
- struct sock *sk;
- __be16 port;
-
- if (!dev->netdev_ops->ndo_add_geneve_port)
- return;
rcu_read_lock();
- list_for_each_entry_rcu(gs, &gn->sock_list, list) {
- sk = gs->sock->sk;
- sa_family = sk->sk_family;
- port = inet_sk(sk)->inet_sport;
- dev->netdev_ops->ndo_add_geneve_port(dev, sa_family, port);
- }
+ list_for_each_entry_rcu(gs, &gn->sock_list, list)
+ udp_tunnel_push_rx_port(dev, gs->sock,
+ UDP_ENC_OFFLOAD_TYPE_GENEVE);
rcu_read_unlock();
}
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index f999db2f97b4..43f634282726 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -622,37 +622,13 @@ static int vxlan_gro_complete(struct sock *sk, struct sk_buff *skb, int nhoff)
/* Notify netdevs that UDP port started listening */
static void vxlan_notify_add_rx_port(struct vxlan_sock *vs)
{
- struct net_device *dev;
- struct sock *sk = vs->sock->sk;
- struct net *net = sock_net(sk);
- sa_family_t sa_family = vxlan_get_sk_family(vs);
- __be16 port = inet_sk(sk)->inet_sport;
-
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (dev->netdev_ops->ndo_add_vxlan_port)
- dev->netdev_ops->ndo_add_vxlan_port(dev, sa_family,
- port);
- }
- rcu_read_unlock();
+ udp_tunnel_notify_add_rx_port(vs->sock, UDP_ENC_OFFLOAD_TYPE_VXLAN);
}
/* Notify netdevs that UDP port is no more listening */
static void vxlan_notify_del_rx_port(struct vxlan_sock *vs)
{
- struct net_device *dev;
- struct sock *sk = vs->sock->sk;
- struct net *net = sock_net(sk);
- sa_family_t sa_family = vxlan_get_sk_family(vs);
- __be16 port = inet_sk(sk)->inet_sport;
-
- rcu_read_lock();
- for_each_netdev_rcu(net, dev) {
- if (dev->netdev_ops->ndo_del_vxlan_port)
- dev->netdev_ops->ndo_del_vxlan_port(dev, sa_family,
- port);
- }
- rcu_read_unlock();
+ udp_tunnel_notify_del_rx_port(vs->sock, UDP_ENC_OFFLOAD_TYPE_VXLAN);
}
/* Add new entry to forwarding table -- assumes lock held */
@@ -2525,30 +2501,22 @@ static struct device_type vxlan_type = {
.name = "vxlan",
};
-/* Calls the ndo_add_vxlan_port of the caller in order to
+/* Calls the ndo_add_udp_enc_port of the caller in order to
* supply the listening VXLAN udp ports. Callers are expected
- * to implement the ndo_add_vxlan_port.
+ * to implement the ndo_add_udp_enc_port.
*/
static void vxlan_push_rx_ports(struct net_device *dev)
{
struct vxlan_sock *vs;
struct net *net = dev_net(dev);
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
- sa_family_t sa_family;
- __be16 port;
unsigned int i;
- if (!dev->netdev_ops->ndo_add_vxlan_port)
- return;
-
spin_lock(&vn->sock_lock);
for (i = 0; i < PORT_HASH_SIZE; ++i) {
- hlist_for_each_entry_rcu(vs, &vn->sock_list[i], hlist) {
- port = inet_sk(vs->sock->sk)->inet_sport;
- sa_family = vxlan_get_sk_family(vs);
- dev->netdev_ops->ndo_add_vxlan_port(dev, sa_family,
- port);
- }
+ hlist_for_each_entry_rcu(vs, &vn->sock_list[i], hlist)
+ udp_tunnel_push_rx_port(dev, vs->sock,
+ UDP_ENC_OFFLOAD_TYPE_VXLAN);
}
spin_unlock(&vn->sock_lock);
}
diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h
index 9d14f707e534..704f931fd9ad 100644
--- a/include/net/udp_tunnel.h
+++ b/include/net/udp_tunnel.h
@@ -84,6 +84,18 @@ struct udp_tunnel_sock_cfg {
void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
struct udp_tunnel_sock_cfg *sock_cfg);
+/* List of offloadable UDP tunnel types */
+enum udp_enc_offloads {
+ UDP_ENC_OFFLOAD_TYPE_VXLAN, /* RFC 7348 */
+ UDP_ENC_OFFLOAD_TYPE_GENEVE, /* draft-ietf-nvo3-geneve */
+};
+
+/* Notify network devices of offloadable types */
+void udp_tunnel_push_rx_port(struct net_device *dev, struct socket *sock,
+ unsigned int type);
+void udp_tunnel_notify_add_rx_port(struct socket *sock, unsigned int type);
+void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned int type);
+
/* Transmit the skb using UDP encapsulation. */
void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
__be32 src, __be32 dst, __u8 tos, __u8 ttl,
diff --git a/net/ipv4/udp_tunnel.c b/net/ipv4/udp_tunnel.c
index 47f12c73d959..d575b70644e3 100644
--- a/net/ipv4/udp_tunnel.c
+++ b/net/ipv4/udp_tunnel.c
@@ -76,6 +76,83 @@ void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
}
EXPORT_SYMBOL_GPL(setup_udp_tunnel_sock);
+void udp_tunnel_push_rx_port(struct net_device *dev, struct socket *sock,
+ unsigned int type)
+{
+ struct sock *sk = sock->sk;
+ sa_family_t sa_family = sk->sk_family;
+ __be16 port = inet_sk(sk)->inet_sport;
+
+ switch (type) {
+ case UDP_ENC_OFFLOAD_TYPE_VXLAN:
+ if (!dev->netdev_ops->ndo_add_vxlan_port)
+ break;
+
+ dev->netdev_ops->ndo_add_vxlan_port(dev, sa_family, port);
+ break;
+ case UDP_ENC_OFFLOAD_TYPE_GENEVE:
+ if (!dev->netdev_ops->ndo_add_geneve_port)
+ break;
+
+ dev->netdev_ops->ndo_add_geneve_port(dev, sa_family, port);
+ break;
+ default:
+ break;
+ }
+}
+EXPORT_SYMBOL_GPL(udp_tunnel_push_rx_port);
+
+/* Notify netdevs that UDP port started listening */
+void udp_tunnel_notify_add_rx_port(struct socket *sock, unsigned int type)
+{
+ struct net *net = sock_net(sock->sk);
+ struct net_device *dev;
+
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev)
+ udp_tunnel_push_rx_port(dev, sock, type);
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL_GPL(udp_tunnel_notify_add_rx_port);
+
+static void udp_tunnel_pull_rx_port(struct net_device *dev,
+ struct socket *sock, unsigned int type)
+{
+ struct sock *sk = sock->sk;
+ sa_family_t sa_family = sk->sk_family;
+ __be16 port = inet_sk(sk)->inet_sport;
+
+ switch (type) {
+ case UDP_ENC_OFFLOAD_TYPE_VXLAN:
+ if (!dev->netdev_ops->ndo_del_vxlan_port)
+ break;
+
+ dev->netdev_ops->ndo_del_vxlan_port(dev, sa_family, port);
+ break;
+ case UDP_ENC_OFFLOAD_TYPE_GENEVE:
+ if (!dev->netdev_ops->ndo_del_geneve_port)
+ break;
+
+ dev->netdev_ops->ndo_del_geneve_port(dev, sa_family, port);
+ break;
+ default:
+ break;
+ }
+}
+
+/* Notify netdevs that UDP port is no more listening */
+void udp_tunnel_notify_del_rx_port(struct socket *sock, unsigned int type)
+{
+ struct net_device *dev;
+ struct net *net = sock_net(sock->sk);
+
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev)
+ udp_tunnel_pull_rx_port(dev, sock, type);
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL_GPL(udp_tunnel_notify_del_rx_port);
+
void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
__be32 src, __be32 dst, __u8 tos, __u8 ttl,
__be16 df, __be16 src_port, __be16 dst_port,
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