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Message-Id: <e48ef66fa08e413c97f3fd8cbfd002cdbb030b38.1437137396.git.tgraf@suug.ch>
Date: Fri, 17 Jul 2015 14:55:41 +0200
From: Thomas Graf <tgraf@...g.ch>
To: roopa@...ulusnetworks.com, rshearma@...cade.com,
ebiederm@...ssion.com, hannes@...essinduktion.org,
pshelar@...ira.com, jesse@...ira.com, davem@...emloft.net,
daniel@...earbox.net, tom@...bertland.com, edumazet@...gle.com,
jiri@...nulli.us, marcelo.leitner@...il.com,
stephen@...workplumber.org, jpettit@...ira.com, kaber@...sh.net,
simon.horman@...ronome.com, joestringer@...ira.com, ja@....bg,
ast@...mgrid.com, weichunc@...mgrid.com
Cc: netdev@...r.kernel.org, dev@...nvswitch.org
Subject: [PATCH net-next 22/22] openvswitch: Use regular VXLAN net_device device
This gets rid of all OVS specific VXLAN code in the receive and
transmit path by using a VXLAN net_device to represent the vport.
Only a small shim layer remains which takes care of handling the
VXLAN specific OVS Netlink configuration.
Unexports vxlan_sock_add(), vxlan_sock_release(), vxlan_xmit_skb()
since they are no longer needed.
Signed-off-by: Thomas Graf <tgraf@...g.ch>
Signed-off-by: Pravin B Shelar <pshelar@...ira.com>
---
drivers/net/vxlan.c | 242 +++++++++++++++----------------
include/net/rtnetlink.h | 1 +
include/net/vxlan.h | 24 +--
net/core/rtnetlink.c | 26 ++--
net/openvswitch/Kconfig | 12 --
net/openvswitch/Makefile | 1 -
net/openvswitch/flow_netlink.c | 6 +-
net/openvswitch/vport-netdev.c | 201 ++++++++++++++++++++++++-
net/openvswitch/vport-vxlan.c | 322 -----------------------------------------
net/openvswitch/vport-vxlan.h | 11 --
10 files changed, 339 insertions(+), 507 deletions(-)
delete mode 100644 net/openvswitch/vport-vxlan.c
delete mode 100644 net/openvswitch/vport-vxlan.h
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 5ae6c0c..76466ef 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -75,6 +75,9 @@ static struct rtnl_link_ops vxlan_link_ops;
static const u8 all_zeros_mac[ETH_ALEN];
+static struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
+ bool no_share, u32 flags);
+
/* per-network namespace private data for this module */
struct vxlan_net {
struct list_head vxlan_list;
@@ -1027,7 +1030,7 @@ static bool vxlan_group_used(struct vxlan_net *vn, struct vxlan_dev *dev)
return false;
}
-void vxlan_sock_release(struct vxlan_sock *vs)
+static void vxlan_sock_release(struct vxlan_sock *vs)
{
struct sock *sk = vs->sock->sk;
struct net *net = sock_net(sk);
@@ -1043,7 +1046,6 @@ void vxlan_sock_release(struct vxlan_sock *vs)
queue_work(vxlan_wq, &vs->del_work);
}
-EXPORT_SYMBOL_GPL(vxlan_sock_release);
/* Update multicast group membership when first VNI on
* multicast address is brought up
@@ -1126,6 +1128,102 @@ static struct vxlanhdr *vxlan_remcsum(struct sk_buff *skb, struct vxlanhdr *vh,
return vh;
}
+static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
+ struct vxlan_metadata *md, u32 vni,
+ struct metadata_dst *tun_dst)
+{
+ struct iphdr *oip = NULL;
+ struct ipv6hdr *oip6 = NULL;
+ struct vxlan_dev *vxlan;
+ struct pcpu_sw_netstats *stats;
+ union vxlan_addr saddr;
+ int err = 0;
+ union vxlan_addr *remote_ip;
+
+ /* For flow based devices, map all packets to VNI 0 */
+ if (vs->flags & VXLAN_F_FLOW_BASED)
+ vni = 0;
+
+ /* Is this VNI defined? */
+ vxlan = vxlan_vs_find_vni(vs, vni);
+ if (!vxlan)
+ goto drop;
+
+ remote_ip = &vxlan->default_dst.remote_ip;
+ skb_reset_mac_header(skb);
+ skb_scrub_packet(skb, !net_eq(vxlan->net, dev_net(vxlan->dev)));
+ skb->protocol = eth_type_trans(skb, vxlan->dev);
+ skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
+
+ /* Ignore packet loops (and multicast echo) */
+ if (ether_addr_equal(eth_hdr(skb)->h_source, vxlan->dev->dev_addr))
+ goto drop;
+
+ /* Re-examine inner Ethernet packet */
+ if (remote_ip->sa.sa_family == AF_INET) {
+ oip = ip_hdr(skb);
+ saddr.sin.sin_addr.s_addr = oip->saddr;
+ saddr.sa.sa_family = AF_INET;
+#if IS_ENABLED(CONFIG_IPV6)
+ } else {
+ oip6 = ipv6_hdr(skb);
+ saddr.sin6.sin6_addr = oip6->saddr;
+ saddr.sa.sa_family = AF_INET6;
+#endif
+ }
+
+ if (tun_dst) {
+ skb_dst_set(skb, (struct dst_entry *)tun_dst);
+ tun_dst = NULL;
+ }
+
+ if ((vxlan->flags & VXLAN_F_LEARN) &&
+ vxlan_snoop(skb->dev, &saddr, eth_hdr(skb)->h_source))
+ goto drop;
+
+ skb_reset_network_header(skb);
+ /* In flow-based mode, GBP is carried in dst_metadata */
+ if (!(vs->flags & VXLAN_F_FLOW_BASED))
+ skb->mark = md->gbp;
+
+ if (oip6)
+ err = IP6_ECN_decapsulate(oip6, skb);
+ if (oip)
+ err = IP_ECN_decapsulate(oip, skb);
+
+ if (unlikely(err)) {
+ if (log_ecn_error) {
+ if (oip6)
+ net_info_ratelimited("non-ECT from %pI6\n",
+ &oip6->saddr);
+ if (oip)
+ net_info_ratelimited("non-ECT from %pI4 with TOS=%#x\n",
+ &oip->saddr, oip->tos);
+ }
+ if (err > 1) {
+ ++vxlan->dev->stats.rx_frame_errors;
+ ++vxlan->dev->stats.rx_errors;
+ goto drop;
+ }
+ }
+
+ stats = this_cpu_ptr(vxlan->dev->tstats);
+ u64_stats_update_begin(&stats->syncp);
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
+ u64_stats_update_end(&stats->syncp);
+
+ netif_rx(skb);
+
+ return;
+drop:
+ if (tun_dst)
+ dst_release((struct dst_entry *)tun_dst);
+
+ /* Consume bad packet */
+ kfree_skb(skb);
+}
+
/* Callback from net/ipv4/udp.c to receive packets */
static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
{
@@ -1192,7 +1290,6 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
info->key.tun_flags |= TUNNEL_CSUM;
md = ip_tunnel_info_opts(info, sizeof(*md));
- md->tun_dst = tun_dst;
} else {
memset(md, 0, sizeof(*md));
}
@@ -1231,8 +1328,7 @@ static int vxlan_udp_encap_recv(struct sock *sk, struct sk_buff *skb)
goto bad_flags;
}
- md->vni = vxh->vx_vni;
- vs->rcv(vs, skb, md);
+ vxlan_rcv(vs, skb, md, vni >> 8, tun_dst);
return 0;
drop:
@@ -1252,104 +1348,6 @@ error:
return 1;
}
-static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
- struct vxlan_metadata *md)
-{
- struct iphdr *oip = NULL;
- struct ipv6hdr *oip6 = NULL;
- struct vxlan_dev *vxlan;
- struct pcpu_sw_netstats *stats;
- union vxlan_addr saddr;
- __u32 vni;
- int err = 0;
- union vxlan_addr *remote_ip;
-
- /* For flow based devices, map all packets to VNI 0 */
- if (vs->flags & VXLAN_F_FLOW_BASED)
- vni = 0;
- else
- vni = ntohl(md->vni) >> 8;
-
- /* Is this VNI defined? */
- vxlan = vxlan_vs_find_vni(vs, vni);
- if (!vxlan)
- goto drop;
-
- remote_ip = &vxlan->default_dst.remote_ip;
- skb_reset_mac_header(skb);
- skb_scrub_packet(skb, !net_eq(vxlan->net, dev_net(vxlan->dev)));
- skb->protocol = eth_type_trans(skb, vxlan->dev);
- skb_postpull_rcsum(skb, eth_hdr(skb), ETH_HLEN);
-
- /* Ignore packet loops (and multicast echo) */
- if (ether_addr_equal(eth_hdr(skb)->h_source, vxlan->dev->dev_addr))
- goto drop;
-
- /* Re-examine inner Ethernet packet */
- if (remote_ip->sa.sa_family == AF_INET) {
- oip = ip_hdr(skb);
- saddr.sin.sin_addr.s_addr = oip->saddr;
- saddr.sa.sa_family = AF_INET;
-#if IS_ENABLED(CONFIG_IPV6)
- } else {
- oip6 = ipv6_hdr(skb);
- saddr.sin6.sin6_addr = oip6->saddr;
- saddr.sa.sa_family = AF_INET6;
-#endif
- }
-
- if (md->tun_dst) {
- skb_dst_set(skb, (struct dst_entry *)md->tun_dst);
- md->tun_dst = NULL;
- }
-
- if ((vxlan->flags & VXLAN_F_LEARN) &&
- vxlan_snoop(skb->dev, &saddr, eth_hdr(skb)->h_source))
- goto drop;
-
- skb_reset_network_header(skb);
- /* In flow-based mode, GBP is carried in dst_metadata */
- if (!(vs->flags & VXLAN_F_FLOW_BASED))
- skb->mark = md->gbp;
-
- if (oip6)
- err = IP6_ECN_decapsulate(oip6, skb);
- if (oip)
- err = IP_ECN_decapsulate(oip, skb);
-
- if (unlikely(err)) {
- if (log_ecn_error) {
- if (oip6)
- net_info_ratelimited("non-ECT from %pI6\n",
- &oip6->saddr);
- if (oip)
- net_info_ratelimited("non-ECT from %pI4 with TOS=%#x\n",
- &oip->saddr, oip->tos);
- }
- if (err > 1) {
- ++vxlan->dev->stats.rx_frame_errors;
- ++vxlan->dev->stats.rx_errors;
- goto drop;
- }
- }
-
- stats = this_cpu_ptr(vxlan->dev->tstats);
- u64_stats_update_begin(&stats->syncp);
- stats->rx_packets++;
- stats->rx_bytes += skb->len;
- u64_stats_update_end(&stats->syncp);
-
- netif_rx(skb);
-
- return;
-drop:
- if (md->tun_dst)
- dst_release((struct dst_entry *)md->tun_dst);
-
- /* Consume bad packet */
- kfree_skb(skb);
-}
-
static int arp_reduce(struct net_device *dev, struct sk_buff *skb)
{
struct vxlan_dev *vxlan = netdev_priv(dev);
@@ -1688,7 +1686,7 @@ static int vxlan6_xmit_skb(struct dst_entry *dst, struct sock *sk,
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,
+ __be16 src_port, __be16 dst_port, __u32 vni,
struct vxlan_metadata *md, bool xnet, u32 vxflags)
{
struct vxlanhdr *vxh;
@@ -1738,7 +1736,7 @@ static int vxlan6_xmit_skb(struct dst_entry *dst, struct sock *sk,
vxh = (struct vxlanhdr *) __skb_push(skb, sizeof(*vxh));
vxh->vx_flags = htonl(VXLAN_HF_VNI);
- vxh->vx_vni = md->vni;
+ vxh->vx_vni = vni;
if (type & SKB_GSO_TUNNEL_REMCSUM) {
u32 data = (skb_checksum_start_offset(skb) - hdrlen) >>
@@ -1771,10 +1769,10 @@ err:
}
#endif
-int vxlan_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,
- struct vxlan_metadata *md, bool xnet, u32 vxflags)
+static int vxlan_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, __u32 vni,
+ struct vxlan_metadata *md, bool xnet, u32 vxflags)
{
struct vxlanhdr *vxh;
int min_headroom;
@@ -1817,7 +1815,7 @@ int vxlan_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
vxh = (struct vxlanhdr *) __skb_push(skb, sizeof(*vxh));
vxh->vx_flags = htonl(VXLAN_HF_VNI);
- vxh->vx_vni = md->vni;
+ vxh->vx_vni = vni;
if (type & SKB_GSO_TUNNEL_REMCSUM) {
u32 data = (skb_checksum_start_offset(skb) - hdrlen) >>
@@ -1844,7 +1842,6 @@ int vxlan_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb,
ttl, df, src_port, dst_port, xnet,
!(vxflags & VXLAN_F_UDP_CSUM));
}
-EXPORT_SYMBOL_GPL(vxlan_xmit_skb);
/* Bypass encapsulation if the destination is local */
static void vxlan_encap_bypass(struct sk_buff *skb, struct vxlan_dev *src_vxlan,
@@ -2012,10 +2009,9 @@ 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);
- md->vni = htonl(vni << 8);
err = vxlan_xmit_skb(rt, sk, skb, fl4.saddr,
dst->sin.sin_addr.s_addr, tos, ttl, df,
- src_port, dst_port, md,
+ src_port, dst_port, htonl(vni << 8), md,
!net_eq(vxlan->net, dev_net(vxlan->dev)),
flags);
if (err < 0) {
@@ -2070,11 +2066,10 @@ static void vxlan_xmit_one(struct sk_buff *skb, struct net_device *dev,
}
ttl = ttl ? : ip6_dst_hoplimit(ndst);
- md->vni = htonl(vni << 8);
md->gbp = skb->mark;
err = vxlan6_xmit_skb(ndst, sk, skb, dev, &fl6.saddr, &fl6.daddr,
- 0, ttl, src_port, dst_port, md,
+ 0, ttl, src_port, dst_port, htonl(vni << 8), md,
!net_eq(vxlan->net, dev_net(vxlan->dev)),
vxlan->flags);
#endif
@@ -2269,8 +2264,8 @@ static int vxlan_open(struct net_device *dev)
struct vxlan_sock *vs;
int ret = 0;
- vs = vxlan_sock_add(vxlan->net, vxlan->cfg.dst_port, vxlan_rcv,
- NULL, vxlan->cfg.no_share, vxlan->flags);
+ vs = vxlan_sock_add(vxlan->net, vxlan->cfg.dst_port,
+ vxlan->cfg.no_share, vxlan->flags);
if (IS_ERR(vs))
return PTR_ERR(vs);
@@ -2569,7 +2564,6 @@ static struct socket *vxlan_create_sock(struct net *net, bool ipv6,
/* Create new listen socket if needed */
static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
- vxlan_rcv_t *rcv, void *data,
u32 flags)
{
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
@@ -2598,8 +2592,6 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
vs->sock = sock;
atomic_set(&vs->refcnt, 1);
- vs->rcv = rcv;
- vs->data = data;
vs->flags = (flags & VXLAN_F_RCV_FLAGS);
/* Initialize the vxlan udp offloads structure */
@@ -2623,9 +2615,8 @@ static struct vxlan_sock *vxlan_socket_create(struct net *net, __be16 port,
return vs;
}
-struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
- vxlan_rcv_t *rcv, void *data,
- bool no_share, u32 flags)
+static struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
+ bool no_share, u32 flags)
{
struct vxlan_net *vn = net_generic(net, vxlan_net_id);
struct vxlan_sock *vs;
@@ -2635,7 +2626,7 @@ struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
spin_lock(&vn->sock_lock);
vs = vxlan_find_sock(net, ipv6 ? AF_INET6 : AF_INET, port,
flags);
- if (vs && vs->rcv == rcv) {
+ if (vs) {
if (!atomic_add_unless(&vs->refcnt, 1, 0))
vs = ERR_PTR(-EBUSY);
spin_unlock(&vn->sock_lock);
@@ -2644,9 +2635,8 @@ struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
spin_unlock(&vn->sock_lock);
}
- return vxlan_socket_create(net, port, rcv, data, flags);
+ return vxlan_socket_create(net, port, flags);
}
-EXPORT_SYMBOL_GPL(vxlan_sock_add);
static int vxlan_dev_configure(struct net *src_net, struct net_device *dev,
struct vxlan_config *conf)
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index 343d922..18fdb98 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -141,6 +141,7 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
unsigned char name_assign_type,
const struct rtnl_link_ops *ops,
struct nlattr *tb[]);
+int rtnl_delete_link(struct net_device *dev);
int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm);
int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len);
diff --git a/include/net/vxlan.h b/include/net/vxlan.h
index 19535f8..eb8d721 100644
--- a/include/net/vxlan.h
+++ b/include/net/vxlan.h
@@ -101,22 +101,12 @@ struct vxlanhdr {
#define FDB_HASH_SIZE (1<<FDB_HASH_BITS)
struct vxlan_metadata {
- __be32 vni;
u32 gbp;
-
- /* Temporary until vxlan_rcv() API is gone */
- struct metadata_dst *tun_dst;
};
-struct vxlan_sock;
-typedef void (vxlan_rcv_t)(struct vxlan_sock *vh, struct sk_buff *skb,
- struct vxlan_metadata *md);
-
/* per UDP socket information */
struct vxlan_sock {
struct hlist_node hlist;
- vxlan_rcv_t *rcv;
- void *data;
struct work_struct del_work;
struct socket *sock;
struct rcu_head rcu;
@@ -203,19 +193,13 @@ struct vxlan_dev {
VXLAN_F_COLLECT_METADATA | \
VXLAN_F_FLOW_BASED)
-struct vxlan_sock *vxlan_sock_add(struct net *net, __be16 port,
- vxlan_rcv_t *rcv, void *data,
- bool no_share, u32 flags);
-
struct net_device *vxlan_dev_create(struct net *net, const char *name,
u8 name_assign_type, struct vxlan_config *conf);
-void vxlan_sock_release(struct vxlan_sock *vs);
-
-int vxlan_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, struct vxlan_metadata *md,
- bool xnet, u32 vxflags);
+static inline __be16 vxlan_dev_dst_port(struct vxlan_dev *vxlan)
+{
+ return inet_sk(vxlan->vn_sock->sock->sk)->inet_sport;
+}
static inline netdev_features_t vxlan_features_check(struct sk_buff *skb,
netdev_features_t features)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 03d61b5..5fb4af2 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1960,16 +1960,30 @@ static int rtnl_group_dellink(const struct net *net, int group)
return 0;
}
+int rtnl_delete_link(struct net_device *dev)
+{
+ const struct rtnl_link_ops *ops;
+ LIST_HEAD(list_kill);
+
+ ops = dev->rtnl_link_ops;
+ if (!ops || !ops->dellink)
+ return -EOPNOTSUPP;
+
+ ops->dellink(dev, &list_kill);
+ unregister_netdevice_many(&list_kill);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rtnl_delete_link);
+
static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
- const struct rtnl_link_ops *ops;
struct net_device *dev;
struct ifinfomsg *ifm;
char ifname[IFNAMSIZ];
struct nlattr *tb[IFLA_MAX+1];
int err;
- LIST_HEAD(list_kill);
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
if (err < 0)
@@ -1991,13 +2005,7 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
if (!dev)
return -ENODEV;
- ops = dev->rtnl_link_ops;
- if (!ops || !ops->dellink)
- return -EOPNOTSUPP;
-
- ops->dellink(dev, &list_kill);
- unregister_netdevice_many(&list_kill);
- return 0;
+ return rtnl_delete_link(dev);
}
int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
diff --git a/net/openvswitch/Kconfig b/net/openvswitch/Kconfig
index 1584040..1119f46 100644
--- a/net/openvswitch/Kconfig
+++ b/net/openvswitch/Kconfig
@@ -44,18 +44,6 @@ config OPENVSWITCH_GRE
If unsure, say Y.
-config OPENVSWITCH_VXLAN
- tristate "Open vSwitch VXLAN tunneling support"
- depends on OPENVSWITCH
- depends on VXLAN
- default OPENVSWITCH
- ---help---
- If you say Y here, then the Open vSwitch will be able create vxlan vport.
-
- Say N to exclude this support and reduce the binary size.
-
- If unsure, say Y.
-
config OPENVSWITCH_GENEVE
tristate "Open vSwitch Geneve tunneling support"
depends on OPENVSWITCH
diff --git a/net/openvswitch/Makefile b/net/openvswitch/Makefile
index 91b9478..38e0e14 100644
--- a/net/openvswitch/Makefile
+++ b/net/openvswitch/Makefile
@@ -16,5 +16,4 @@ openvswitch-y := \
vport-netdev.o
obj-$(CONFIG_OPENVSWITCH_GENEVE)+= vport-geneve.o
-obj-$(CONFIG_OPENVSWITCH_VXLAN) += vport-vxlan.o
obj-$(CONFIG_OPENVSWITCH_GRE) += vport-gre.o
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index e7906df..a6eb77a 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -47,9 +47,9 @@
#include <net/ipv6.h>
#include <net/ndisc.h>
#include <net/mpls.h>
+#include <net/vxlan.h>
#include "flow_netlink.h"
-#include "vport-vxlan.h"
struct ovs_len_tbl {
int len;
@@ -475,7 +475,7 @@ static int vxlan_tun_opt_from_nlattr(const struct nlattr *a,
{
struct nlattr *tb[OVS_VXLAN_EXT_MAX+1];
unsigned long opt_key_offset;
- struct ovs_vxlan_opts opts;
+ struct vxlan_metadata opts;
int err;
BUILD_BUG_ON(sizeof(opts) > sizeof(match->key->tun_opts));
@@ -626,7 +626,7 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
static int vxlan_opt_to_nlattr(struct sk_buff *skb,
const void *tun_opts, int swkey_tun_opts_len)
{
- const struct ovs_vxlan_opts *opts = tun_opts;
+ const struct vxlan_metadata *opts = tun_opts;
struct nlattr *nla;
nla = nla_nest_start(skb, OVS_TUNNEL_KEY_ATTR_VXLAN_OPTS);
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index e682bdc..68d0582 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -27,9 +27,13 @@
#include <linux/skbuff.h>
#include <linux/openvswitch.h>
-#include <net/llc.h>
+#include <net/udp.h>
+#include <net/ip_tunnels.h>
+#include <net/rtnetlink.h>
+#include <net/vxlan.h>
#include "datapath.h"
+#include "vport.h"
#include "vport-internal_dev.h"
#include "vport-netdev.h"
@@ -147,7 +151,8 @@ static void free_port_rcu(struct rcu_head *rcu)
{
struct vport *vport = container_of(rcu, struct vport, rcu);
- dev_put(vport->dev);
+ if (vport->dev)
+ dev_put(vport->dev);
ovs_vport_free(vport);
}
@@ -221,12 +226,202 @@ static struct vport_ops ovs_netdev_vport_ops = {
.send = netdev_send,
};
+/* Compat code for old userspace. */
+#if IS_ENABLED(CONFIG_VXLAN)
+static struct vport_ops ovs_vxlan_netdev_vport_ops;
+
+static int vxlan_get_options(const struct vport *vport, struct sk_buff *skb)
+{
+ struct vxlan_dev *vxlan = netdev_priv(vport->dev);
+ __be16 dst_port = vxlan->cfg.dst_port;
+
+ if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, ntohs(dst_port)))
+ return -EMSGSIZE;
+
+ if (vxlan->flags & VXLAN_F_GBP) {
+ struct nlattr *exts;
+
+ exts = nla_nest_start(skb, OVS_TUNNEL_ATTR_EXTENSION);
+ if (!exts)
+ return -EMSGSIZE;
+
+ if (vxlan->flags & VXLAN_F_GBP &&
+ nla_put_flag(skb, OVS_VXLAN_EXT_GBP))
+ return -EMSGSIZE;
+
+ nla_nest_end(skb, exts);
+ }
+
+ return 0;
+}
+
+static const struct nla_policy exts_policy[OVS_VXLAN_EXT_MAX + 1] = {
+ [OVS_VXLAN_EXT_GBP] = { .type = NLA_FLAG, },
+};
+
+static int vxlan_configure_exts(struct vport *vport, struct nlattr *attr,
+ struct vxlan_config *conf)
+{
+ struct nlattr *exts[OVS_VXLAN_EXT_MAX + 1];
+ int err;
+
+ if (nla_len(attr) < sizeof(struct nlattr))
+ return -EINVAL;
+
+ err = nla_parse_nested(exts, OVS_VXLAN_EXT_MAX, attr, exts_policy);
+ if (err < 0)
+ return err;
+
+ if (exts[OVS_VXLAN_EXT_GBP])
+ conf->flags |= VXLAN_F_GBP;
+
+ return 0;
+}
+
+static struct vport *vxlan_tnl_create(const struct vport_parms *parms)
+{
+ struct net *net = ovs_dp_get_net(parms->dp);
+ struct nlattr *options = parms->options;
+ struct net_device *dev;
+ struct vport *vport;
+ struct nlattr *a;
+ int err;
+ struct vxlan_config conf = {
+ .no_share = true,
+ .flags = VXLAN_F_FLOW_BASED | VXLAN_F_COLLECT_METADATA,
+ };
+
+ if (!options) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
+ if (a && nla_len(a) == sizeof(u16)) {
+ conf.dst_port = htons(nla_get_u16(a));
+ } else {
+ /* Require destination port from userspace. */
+ err = -EINVAL;
+ goto error;
+ }
+
+ vport = ovs_vport_alloc(0, &ovs_vxlan_netdev_vport_ops, parms);
+ if (IS_ERR(vport))
+ return vport;
+
+ a = nla_find_nested(options, OVS_TUNNEL_ATTR_EXTENSION);
+ if (a) {
+ err = vxlan_configure_exts(vport, a, &conf);
+ if (err) {
+ ovs_vport_free(vport);
+ goto error;
+ }
+ }
+
+ rtnl_lock();
+ dev = vxlan_dev_create(net, parms->name, NET_NAME_USER, &conf);
+ if (IS_ERR(dev)) {
+ rtnl_unlock();
+ ovs_vport_free(vport);
+ return ERR_CAST(dev);
+ }
+
+ dev_change_flags(dev, dev->flags | IFF_UP);
+ rtnl_unlock();
+ return vport;
+error:
+ return ERR_PTR(err);
+}
+
+static struct vport *vxlan_create(const struct vport_parms *parms)
+{
+ struct vport *vport;
+
+ vport = vxlan_tnl_create(parms);
+ if (IS_ERR(vport))
+ return vport;
+
+ return netdev_link(vport, parms->name);
+}
+
+static void vxlan_destroy(struct vport *vport)
+{
+ rtnl_lock();
+ if (vport->dev->priv_flags & IFF_OVS_DATAPATH)
+ ovs_netdev_detach_dev(vport);
+
+ /* Early release so we can unregister the device */
+ dev_put(vport->dev);
+ rtnl_delete_link(vport->dev);
+ vport->dev = NULL;
+ rtnl_unlock();
+
+ call_rcu(&vport->rcu, free_port_rcu);
+}
+
+static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
+ struct ip_tunnel_info *egress_tun_info)
+{
+ struct vxlan_dev *vxlan = netdev_priv(vport->dev);
+ struct net *net = ovs_dp_get_net(vport->dp);
+ __be16 dst_port = vxlan_dev_dst_port(vxlan);
+ __be16 src_port;
+ int port_min;
+ int port_max;
+
+ inet_get_local_port_range(net, &port_min, &port_max);
+ src_port = udp_flow_src_port(net, skb, 0, 0, true);
+
+ return ovs_tunnel_get_egress_info(egress_tun_info, net,
+ OVS_CB(skb)->egress_tun_info,
+ IPPROTO_UDP, skb->mark,
+ src_port, dst_port);
+}
+
+static struct vport_ops ovs_vxlan_netdev_vport_ops = {
+ .type = OVS_VPORT_TYPE_VXLAN,
+ .create = vxlan_create,
+ .destroy = vxlan_destroy,
+ .get_options = vxlan_get_options,
+ .send = netdev_send,
+ .get_egress_tun_info = vxlan_get_egress_tun_info,
+};
+
+static int vxlan_compat_init(void)
+{
+ return ovs_vport_ops_register(&ovs_vxlan_netdev_vport_ops);
+}
+
+static void vxlan_compat_exit(void)
+{
+ ovs_vport_ops_unregister(&ovs_vxlan_netdev_vport_ops);
+}
+#else
+static int vxlan_compat_init(void)
+{
+ return 0;
+}
+
+static void vxlan_compat_exit(void)
+{
+}
+#endif
+
int __init ovs_netdev_init(void)
{
- return ovs_vport_ops_register(&ovs_netdev_vport_ops);
+ int err;
+
+ err = ovs_vport_ops_register(&ovs_netdev_vport_ops);
+ if (err)
+ return err;
+ err = vxlan_compat_init();
+ if (err)
+ vxlan_compat_exit();
+ return err;
}
void ovs_netdev_exit(void)
{
ovs_vport_ops_unregister(&ovs_netdev_vport_ops);
+ vxlan_compat_exit();
}
diff --git a/net/openvswitch/vport-vxlan.c b/net/openvswitch/vport-vxlan.c
deleted file mode 100644
index 6f7986f..0000000
--- a/net/openvswitch/vport-vxlan.c
+++ /dev/null
@@ -1,322 +0,0 @@
-/*
- * Copyright (c) 2014 Nicira, Inc.
- * Copyright (c) 2013 Cisco Systems, Inc.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/in.h>
-#include <linux/ip.h>
-#include <linux/net.h>
-#include <linux/rculist.h>
-#include <linux/udp.h>
-#include <linux/module.h>
-
-#include <net/icmp.h>
-#include <net/ip.h>
-#include <net/udp.h>
-#include <net/ip_tunnels.h>
-#include <net/rtnetlink.h>
-#include <net/route.h>
-#include <net/dsfield.h>
-#include <net/inet_ecn.h>
-#include <net/net_namespace.h>
-#include <net/netns/generic.h>
-#include <net/vxlan.h>
-
-#include "datapath.h"
-#include "vport.h"
-#include "vport-vxlan.h"
-
-/**
- * struct vxlan_port - Keeps track of open UDP ports
- * @vs: vxlan_sock created for the port.
- * @name: vport name.
- */
-struct vxlan_port {
- struct vxlan_sock *vs;
- char name[IFNAMSIZ];
- u32 exts; /* VXLAN_F_* in <net/vxlan.h> */
-};
-
-static struct vport_ops ovs_vxlan_vport_ops;
-
-static inline struct vxlan_port *vxlan_vport(const struct vport *vport)
-{
- return vport_priv(vport);
-}
-
-/* Called with rcu_read_lock and BH disabled. */
-static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb,
- struct vxlan_metadata *md)
-{
- struct ip_tunnel_info tun_info;
- struct vxlan_port *vxlan_port;
- struct vport *vport = vs->data;
- struct iphdr *iph;
- struct ovs_vxlan_opts opts = {
- .gbp = md->gbp,
- };
- __be64 key;
- __be16 flags;
-
- flags = TUNNEL_KEY | (udp_hdr(skb)->check != 0 ? TUNNEL_CSUM : 0);
- vxlan_port = vxlan_vport(vport);
- if (vxlan_port->exts & VXLAN_F_GBP && md->gbp)
- flags |= TUNNEL_VXLAN_OPT;
-
- /* Save outer tunnel values */
- iph = ip_hdr(skb);
- key = cpu_to_be64(ntohl(md->vni) >> 8);
- ip_tunnel_info_init(&tun_info, iph,
- udp_hdr(skb)->source, udp_hdr(skb)->dest,
- key, flags, &opts, sizeof(opts));
-
- ovs_vport_receive(vport, skb, &tun_info);
-}
-
-static int vxlan_get_options(const struct vport *vport, struct sk_buff *skb)
-{
- struct vxlan_port *vxlan_port = vxlan_vport(vport);
- __be16 dst_port = inet_sk(vxlan_port->vs->sock->sk)->inet_sport;
-
- if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, ntohs(dst_port)))
- return -EMSGSIZE;
-
- if (vxlan_port->exts) {
- struct nlattr *exts;
-
- exts = nla_nest_start(skb, OVS_TUNNEL_ATTR_EXTENSION);
- if (!exts)
- return -EMSGSIZE;
-
- if (vxlan_port->exts & VXLAN_F_GBP &&
- nla_put_flag(skb, OVS_VXLAN_EXT_GBP))
- return -EMSGSIZE;
-
- nla_nest_end(skb, exts);
- }
-
- return 0;
-}
-
-static void vxlan_tnl_destroy(struct vport *vport)
-{
- struct vxlan_port *vxlan_port = vxlan_vport(vport);
-
- vxlan_sock_release(vxlan_port->vs);
-
- ovs_vport_deferred_free(vport);
-}
-
-static const struct nla_policy exts_policy[OVS_VXLAN_EXT_MAX+1] = {
- [OVS_VXLAN_EXT_GBP] = { .type = NLA_FLAG, },
-};
-
-static int vxlan_configure_exts(struct vport *vport, struct nlattr *attr)
-{
- struct nlattr *exts[OVS_VXLAN_EXT_MAX+1];
- struct vxlan_port *vxlan_port;
- int err;
-
- if (nla_len(attr) < sizeof(struct nlattr))
- return -EINVAL;
-
- err = nla_parse_nested(exts, OVS_VXLAN_EXT_MAX, attr, exts_policy);
- if (err < 0)
- return err;
-
- vxlan_port = vxlan_vport(vport);
-
- if (exts[OVS_VXLAN_EXT_GBP])
- vxlan_port->exts |= VXLAN_F_GBP;
-
- return 0;
-}
-
-static struct vport *vxlan_tnl_create(const struct vport_parms *parms)
-{
- struct net *net = ovs_dp_get_net(parms->dp);
- struct nlattr *options = parms->options;
- struct vxlan_port *vxlan_port;
- struct vxlan_sock *vs;
- struct vport *vport;
- struct nlattr *a;
- u16 dst_port;
- int err;
-
- if (!options) {
- err = -EINVAL;
- goto error;
- }
- a = nla_find_nested(options, OVS_TUNNEL_ATTR_DST_PORT);
- if (a && nla_len(a) == sizeof(u16)) {
- dst_port = nla_get_u16(a);
- } else {
- /* Require destination port from userspace. */
- err = -EINVAL;
- goto error;
- }
-
- vport = ovs_vport_alloc(sizeof(struct vxlan_port),
- &ovs_vxlan_vport_ops, parms);
- if (IS_ERR(vport))
- return vport;
-
- vxlan_port = vxlan_vport(vport);
- strncpy(vxlan_port->name, parms->name, IFNAMSIZ);
-
- a = nla_find_nested(options, OVS_TUNNEL_ATTR_EXTENSION);
- if (a) {
- err = vxlan_configure_exts(vport, a);
- if (err) {
- ovs_vport_free(vport);
- goto error;
- }
- }
-
- vs = vxlan_sock_add(net, htons(dst_port), vxlan_rcv, vport, true,
- vxlan_port->exts);
- if (IS_ERR(vs)) {
- ovs_vport_free(vport);
- return (void *)vs;
- }
- vxlan_port->vs = vs;
-
- return vport;
-
-error:
- return ERR_PTR(err);
-}
-
-static int vxlan_ext_gbp(struct sk_buff *skb)
-{
- const struct ip_tunnel_info *tun_info;
- const struct ovs_vxlan_opts *opts;
-
- tun_info = OVS_CB(skb)->egress_tun_info;
- opts = tun_info->options;
-
- if (tun_info->key.tun_flags & TUNNEL_VXLAN_OPT &&
- tun_info->options_len >= sizeof(*opts))
- return opts->gbp;
- else
- return 0;
-}
-
-static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
-{
- struct net *net = ovs_dp_get_net(vport->dp);
- struct vxlan_port *vxlan_port = vxlan_vport(vport);
- struct sock *sk = vxlan_port->vs->sock->sk;
- __be16 dst_port = inet_sk(sk)->inet_sport;
- const struct ip_tunnel_key *tun_key;
- struct vxlan_metadata md = {0};
- struct rtable *rt;
- struct flowi4 fl;
- __be16 src_port;
- __be16 df;
- int err;
- u32 vxflags;
-
- if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
- err = -EINVAL;
- goto error;
- }
-
- tun_key = &OVS_CB(skb)->egress_tun_info->key;
- rt = ovs_tunnel_route_lookup(net, tun_key, skb->mark, &fl, IPPROTO_UDP);
- if (IS_ERR(rt)) {
- err = PTR_ERR(rt);
- goto error;
- }
-
- df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
- htons(IP_DF) : 0;
-
- skb->ignore_df = 1;
-
- src_port = udp_flow_src_port(net, skb, 0, 0, true);
- md.vni = htonl(be64_to_cpu(tun_key->tun_id) << 8);
- md.gbp = vxlan_ext_gbp(skb);
- vxflags = vxlan_port->exts |
- (tun_key->tun_flags & TUNNEL_CSUM ? VXLAN_F_UDP_CSUM : 0);
-
- err = vxlan_xmit_skb(rt, sk, skb, fl.saddr, tun_key->ipv4_dst,
- tun_key->ipv4_tos, tun_key->ipv4_ttl, df,
- src_port, dst_port,
- &md, false, vxflags);
- if (err < 0)
- ip_rt_put(rt);
- return err;
-error:
- kfree_skb(skb);
- return err;
-}
-
-static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
- struct ip_tunnel_info *egress_tun_info)
-{
- struct net *net = ovs_dp_get_net(vport->dp);
- struct vxlan_port *vxlan_port = vxlan_vport(vport);
- __be16 dst_port = inet_sk(vxlan_port->vs->sock->sk)->inet_sport;
- __be16 src_port;
- int port_min;
- int port_max;
-
- inet_get_local_port_range(net, &port_min, &port_max);
- src_port = udp_flow_src_port(net, skb, 0, 0, true);
-
- return ovs_tunnel_get_egress_info(egress_tun_info, net,
- OVS_CB(skb)->egress_tun_info,
- IPPROTO_UDP, skb->mark,
- src_port, dst_port);
-}
-
-static const char *vxlan_get_name(const struct vport *vport)
-{
- struct vxlan_port *vxlan_port = vxlan_vport(vport);
- return vxlan_port->name;
-}
-
-static struct vport_ops ovs_vxlan_vport_ops = {
- .type = OVS_VPORT_TYPE_VXLAN,
- .create = vxlan_tnl_create,
- .destroy = vxlan_tnl_destroy,
- .get_name = vxlan_get_name,
- .get_options = vxlan_get_options,
- .send = vxlan_tnl_send,
- .get_egress_tun_info = vxlan_get_egress_tun_info,
- .owner = THIS_MODULE,
-};
-
-static int __init ovs_vxlan_tnl_init(void)
-{
- return ovs_vport_ops_register(&ovs_vxlan_vport_ops);
-}
-
-static void __exit ovs_vxlan_tnl_exit(void)
-{
- ovs_vport_ops_unregister(&ovs_vxlan_vport_ops);
-}
-
-module_init(ovs_vxlan_tnl_init);
-module_exit(ovs_vxlan_tnl_exit);
-
-MODULE_DESCRIPTION("OVS: VXLAN switching port");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("vport-type-4");
diff --git a/net/openvswitch/vport-vxlan.h b/net/openvswitch/vport-vxlan.h
deleted file mode 100644
index 4b08233e..0000000
--- a/net/openvswitch/vport-vxlan.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef VPORT_VXLAN_H
-#define VPORT_VXLAN_H 1
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-
-struct ovs_vxlan_opts {
- __u32 gbp;
-};
-
-#endif
--
2.4.3
--
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