#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-#include <linux/if_arp.h>
-#include <linux/if_ether.h>
-#include <linux/ip.h>
-#include <linux/if_vlan.h>
-#include <linux/igmp.h>
#include <linux/in.h>
#include <linux/in_route.h>
#include <linux/inetdevice.h>
#include <linux/version.h>
#include <linux/workqueue.h>
#include <linux/rculist.h>
-
-#include <net/dsfield.h>
-#include <net/dst.h>
-#include <net/icmp.h>
-#include <net/inet_ecn.h>
-#include <net/ip.h>
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-#include <net/ipv6.h>
-#endif
#include <net/route.h>
#include <net/xfrm.h>
#include "tunnel.h"
#include "vlan.h"
#include "vport.h"
-#include "vport-internal_dev.h"
-
-#define PORT_TABLE_SIZE 1024
-
-static struct hlist_head *port_table __read_mostly;
-
-/*
- * These are just used as an optimization: they don't require any kind of
- * synchronization because we could have just as easily read the value before
- * the port change happened.
- */
-static unsigned int key_local_remote_ports __read_mostly;
-static unsigned int key_remote_ports __read_mostly;
-static unsigned int key_multicast_ports __read_mostly;
-static unsigned int local_remote_ports __read_mostly;
-static unsigned int remote_ports __read_mostly;
-static unsigned int null_ports __read_mostly;
-static unsigned int multicast_ports __read_mostly;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
#define rt_dst(rt) (rt->dst)
#define rt_dst(rt) (rt->u.dst)
#endif
-static struct vport *tnl_vport_to_vport(const struct tnl_vport *tnl_vport)
-{
- return vport_from_priv(tnl_vport);
-}
-
-static void free_config_rcu(struct rcu_head *rcu)
-{
- struct tnl_mutable_config *c = container_of(rcu, struct tnl_mutable_config, rcu);
- kfree(c);
-}
-
-/* Frees the portion of 'mutable' that requires RTNL and thus can't happen
- * within an RCU callback. Fortunately this part doesn't require waiting for
- * an RCU grace period.
- */
-static void free_mutable_rtnl(struct tnl_mutable_config *mutable)
-{
- ASSERT_RTNL();
- if (ipv4_is_multicast(mutable->key.daddr) && mutable->mlink) {
- struct in_device *in_dev;
- in_dev = inetdev_by_index(port_key_get_net(&mutable->key), mutable->mlink);
- if (in_dev)
- ip_mc_dec_group(in_dev, mutable->key.daddr);
- }
-}
-
-static void assign_config_rcu(struct vport *vport,
- struct tnl_mutable_config *new_config)
-{
- struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- struct tnl_mutable_config *old_config;
-
- old_config = rtnl_dereference(tnl_vport->mutable);
- rcu_assign_pointer(tnl_vport->mutable, new_config);
-
- free_mutable_rtnl(old_config);
- call_rcu(&old_config->rcu, free_config_rcu);
-}
-
-static unsigned int *find_port_pool(const struct tnl_mutable_config *mutable)
-{
- bool is_multicast = ipv4_is_multicast(mutable->key.daddr);
-
- if (mutable->flags & TNL_F_IN_KEY_MATCH) {
- if (mutable->key.saddr)
- return &local_remote_ports;
- else if (is_multicast)
- return &multicast_ports;
- else
- return &remote_ports;
- } else {
- if (mutable->key.saddr)
- return &key_local_remote_ports;
- else if (is_multicast)
- return &key_multicast_ports;
- else if (mutable->key.daddr)
- return &key_remote_ports;
- else
- return &null_ports;
- }
-}
-
-static u32 port_hash(const struct port_lookup_key *key)
-{
- return jhash2((u32 *)key, (PORT_KEY_LEN / sizeof(u32)), 0);
-}
-
-static struct hlist_head *find_bucket(u32 hash)
-{
- return &port_table[(hash & (PORT_TABLE_SIZE - 1))];
-}
-
-static void port_table_add_port(struct vport *vport)
-{
- struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- const struct tnl_mutable_config *mutable;
- u32 hash;
-
- mutable = rtnl_dereference(tnl_vport->mutable);
- hash = port_hash(&mutable->key);
- hlist_add_head_rcu(&tnl_vport->hash_node, find_bucket(hash));
-
- (*find_port_pool(rtnl_dereference(tnl_vport->mutable)))++;
-}
-
-static void port_table_move_port(struct vport *vport,
- struct tnl_mutable_config *new_mutable)
-{
- struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- u32 hash;
-
- hash = port_hash(&new_mutable->key);
- hlist_del_init_rcu(&tnl_vport->hash_node);
- hlist_add_head_rcu(&tnl_vport->hash_node, find_bucket(hash));
-
- (*find_port_pool(rtnl_dereference(tnl_vport->mutable)))--;
- assign_config_rcu(vport, new_mutable);
- (*find_port_pool(rtnl_dereference(tnl_vport->mutable)))++;
-}
-
-static void port_table_remove_port(struct vport *vport)
-{
- struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
-
- hlist_del_init_rcu(&tnl_vport->hash_node);
-
- (*find_port_pool(rtnl_dereference(tnl_vport->mutable)))--;
-}
-
-static struct vport *port_table_lookup(struct port_lookup_key *key,
- const struct tnl_mutable_config **pmutable)
-{
- struct hlist_node *n;
- struct hlist_head *bucket;
- u32 hash = port_hash(key);
- struct tnl_vport *tnl_vport;
-
- bucket = find_bucket(hash);
-
- hlist_for_each_entry_rcu(tnl_vport, n, bucket, hash_node) {
- struct tnl_mutable_config *mutable;
-
- mutable = rcu_dereference_rtnl(tnl_vport->mutable);
- if (!memcmp(&mutable->key, key, PORT_KEY_LEN)) {
- *pmutable = mutable;
- return tnl_vport_to_vport(tnl_vport);
- }
- }
-
- return NULL;
-}
-
-struct vport *ovs_tnl_find_port(struct net *net, __be32 saddr, __be32 daddr,
- __be64 key, int tunnel_type,
- const struct tnl_mutable_config **mutable)
-{
- struct port_lookup_key lookup;
- struct vport *vport;
- bool is_multicast = ipv4_is_multicast(saddr);
-
- port_key_set_net(&lookup, net);
- lookup.saddr = saddr;
- lookup.daddr = daddr;
-
- /* First try for exact match on in_key. */
- lookup.in_key = key;
- lookup.tunnel_type = tunnel_type | TNL_T_KEY_EXACT;
- if (!is_multicast && key_local_remote_ports) {
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
- }
- if (key_remote_ports) {
- lookup.saddr = 0;
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
-
- lookup.saddr = saddr;
- }
-
- /* Then try matches that wildcard in_key. */
- lookup.in_key = 0;
- lookup.tunnel_type = tunnel_type | TNL_T_KEY_MATCH;
- if (!is_multicast && local_remote_ports) {
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
- }
- if (remote_ports) {
- lookup.saddr = 0;
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
- }
-
- if (is_multicast) {
- lookup.saddr = 0;
- lookup.daddr = saddr;
- if (key_multicast_ports) {
- lookup.tunnel_type = tunnel_type | TNL_T_KEY_EXACT;
- lookup.in_key = key;
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
- }
- if (multicast_ports) {
- lookup.tunnel_type = tunnel_type | TNL_T_KEY_MATCH;
- lookup.in_key = 0;
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
- }
- }
-
- if (null_ports) {
- lookup.daddr = 0;
- lookup.saddr = 0;
- lookup.in_key = 0;
- lookup.tunnel_type = tunnel_type;
- vport = port_table_lookup(&lookup, mutable);
- if (vport)
- return vport;
- }
- return NULL;
-}
-
-static void ecn_decapsulate(struct sk_buff *skb)
-{
- if (unlikely(INET_ECN_is_ce(OVS_CB(skb)->tun_key->ipv4_tos))) {
- __be16 protocol = skb->protocol;
-
- skb_set_network_header(skb, ETH_HLEN);
-
- if (protocol == htons(ETH_P_8021Q)) {
- if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
- return;
-
- protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
- skb_set_network_header(skb, VLAN_ETH_HLEN);
- }
-
- if (protocol == htons(ETH_P_IP)) {
- if (unlikely(!pskb_may_pull(skb, skb_network_offset(skb)
- + sizeof(struct iphdr))))
- return;
-
- IP_ECN_set_ce(ip_hdr(skb));
- }
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
- else if (protocol == htons(ETH_P_IPV6)) {
- if (unlikely(!pskb_may_pull(skb, skb_network_offset(skb)
- + sizeof(struct ipv6hdr))))
- return;
-
- IP6_ECN_set_ce(ipv6_hdr(skb));
- }
-#endif
- }
-}
-
/**
* ovs_tnl_rcv - ingress point for generic tunnel code
*
nf_reset(skb);
skb_clear_rxhash(skb);
secpath_reset(skb);
-
- ecn_decapsulate(skb);
vlan_set_tci(skb, 0);
if (unlikely(compute_ip_summed(skb, false))) {
}
static struct sk_buff *handle_offloads(struct sk_buff *skb,
- const struct tnl_mutable_config *mutable,
const struct rtable *rt,
int tunnel_hlen)
{
return ERR_PTR(err);
}
-static int send_frags(struct sk_buff *skb,
- int tunnel_hlen)
-{
- int sent_len;
-
- sent_len = 0;
- while (skb) {
- struct sk_buff *next = skb->next;
- int frag_len = skb->len - tunnel_hlen;
- int err;
-
- skb->next = NULL;
- memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
-
- err = ip_local_out(skb);
- skb = next;
- if (unlikely(net_xmit_eval(err)))
- goto free_frags;
- sent_len += frag_len;
- }
-
- return sent_len;
-
-free_frags:
- /*
- * There's no point in continuing to send fragments once one has been
- * dropped so just free the rest. This may help improve the congestion
- * that caused the first packet to be dropped.
- */
- ovs_tnl_free_linked_skbs(skb);
- return sent_len;
-}
-
/* Compute source UDP port for outgoing packet.
* Currently we use the flow hash.
*/
int ovs_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- const struct tnl_mutable_config *mutable = rcu_dereference(tnl_vport->mutable);
enum vport_err_type err = VPORT_E_TX_ERROR;
struct rtable *rt;
- struct ovs_key_ipv4_tunnel tun_key;
+ __be32 saddr;
int sent_len = 0;
int tunnel_hlen;
- __be16 frag_off;
- __be32 daddr;
- __be32 saddr;
- u32 skb_mark;
- u8 ttl;
- u8 tos;
-
- /* Validate the protocol headers before we try to use them. */
- if (skb->protocol == htons(ETH_P_8021Q) &&
- !vlan_tx_tag_present(skb)) {
- if (unlikely(!pskb_may_pull(skb, VLAN_ETH_HLEN)))
- goto error_free;
-
- skb->protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
- skb_set_network_header(skb, VLAN_ETH_HLEN);
- }
-
- if (skb->protocol == htons(ETH_P_IP)) {
- if (unlikely(!pskb_may_pull(skb, skb_network_offset(skb)
- + sizeof(struct iphdr))))
- skb->protocol = 0;
- }
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
- else if (skb->protocol == htons(ETH_P_IPV6)) {
- if (unlikely(!pskb_may_pull(skb, skb_network_offset(skb)
- + sizeof(struct ipv6hdr))))
- skb->protocol = 0;
- }
-#endif
- /* If OVS_CB(skb)->tun_key is NULL, point it at the local tun_key here,
- * and zero it out.
- */
- if (!OVS_CB(skb)->tun_key) {
- memset(&tun_key, 0, sizeof(tun_key));
- OVS_CB(skb)->tun_key = &tun_key;
- }
-
- tunnel_hlen = tnl_vport->tnl_ops->hdr_len(mutable, OVS_CB(skb)->tun_key);
- if (unlikely(tunnel_hlen < 0)) {
- err = VPORT_E_TX_DROPPED;
+ if (unlikely(!OVS_CB(skb)->tun_key))
goto error_free;
- }
- tunnel_hlen += sizeof(struct iphdr);
-
- if (OVS_CB(skb)->tun_key->ipv4_dst) {
- daddr = OVS_CB(skb)->tun_key->ipv4_dst;
- saddr = OVS_CB(skb)->tun_key->ipv4_src;
- tos = OVS_CB(skb)->tun_key->ipv4_tos;
- ttl = OVS_CB(skb)->tun_key->ipv4_ttl;
- frag_off = OVS_CB(skb)->tun_key->tun_flags &
- OVS_TNL_F_DONT_FRAGMENT ? htons(IP_DF) : 0;
- } else {
- u8 inner_tos;
- daddr = mutable->key.daddr;
- saddr = mutable->key.saddr;
-
- if (unlikely(!daddr)) {
- /* Trying to sent packet from Null-port without
- * tunnel info? Drop this packet. */
- err = VPORT_E_TX_DROPPED;
- goto error_free;
- }
-
- /* ToS */
- if (skb->protocol == htons(ETH_P_IP))
- inner_tos = ip_hdr(skb)->tos;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
- else if (skb->protocol == htons(ETH_P_IPV6))
- inner_tos = ipv6_get_dsfield(ipv6_hdr(skb));
-#endif
- else
- inner_tos = 0;
-
- if (mutable->flags & TNL_F_TOS_INHERIT)
- tos = inner_tos;
- else
- tos = mutable->tos;
-
- tos = INET_ECN_encapsulate(tos, inner_tos);
-
- /* TTL */
- ttl = mutable->ttl;
- if (mutable->flags & TNL_F_TTL_INHERIT) {
- if (skb->protocol == htons(ETH_P_IP))
- ttl = ip_hdr(skb)->ttl;
-#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
- else if (skb->protocol == htons(ETH_P_IPV6))
- ttl = ipv6_hdr(skb)->hop_limit;
-#endif
- }
-
- frag_off = mutable->flags & TNL_F_DF_DEFAULT ? htons(IP_DF) : 0;
- }
/* Route lookup */
- skb_mark = skb_get_mark(skb);
- rt = find_route(port_key_get_net(&mutable->key), &saddr, daddr,
- tnl_vport->tnl_ops->ipproto, tos, skb_mark);
+ saddr = OVS_CB(skb)->tun_key->ipv4_src;
+ rt = find_route(ovs_dp_get_net(vport->dp),
+ &saddr,
+ OVS_CB(skb)->tun_key->ipv4_dst,
+ tnl_vport->tnl_ops->ipproto,
+ OVS_CB(skb)->tun_key->ipv4_tos,
+ skb_get_mark(skb));
if (IS_ERR(rt))
goto error_free;
- /* Reset SKB */
- nf_reset(skb);
- secpath_reset(skb);
- skb_dst_drop(skb);
- skb_clear_rxhash(skb);
-
/* Offloading */
- skb = handle_offloads(skb, mutable, rt, tunnel_hlen);
+ tunnel_hlen = tnl_vport->tnl_ops->hdr_len(OVS_CB(skb)->tun_key);
+ tunnel_hlen += sizeof(struct iphdr);
+
+ skb = handle_offloads(skb, rt, tunnel_hlen);
if (IS_ERR(skb)) {
skb = NULL;
goto err_free_rt;
}
- /* TTL Fixup. */
- if (!OVS_CB(skb)->tun_key->ipv4_dst) {
- if (!(mutable->flags & TNL_F_TTL_INHERIT)) {
- if (!ttl)
- ttl = ip4_dst_hoplimit(&rt_dst(rt));
- }
- }
+ /* Reset SKB */
+ nf_reset(skb);
+ secpath_reset(skb);
+ skb_dst_drop(skb);
+ skb_clear_rxhash(skb);
while (skb) {
- struct iphdr *iph;
struct sk_buff *next_skb = skb->next;
+ struct iphdr *iph;
+ int frag_len;
+
skb->next = NULL;
if (unlikely(vlan_deaccel_tag(skb)))
goto next;
+ frag_len = skb->len;
skb_push(skb, tunnel_hlen);
skb_reset_network_header(skb);
skb_set_transport_header(skb, sizeof(struct iphdr));
else
skb_dst_set(skb, &rt_dst(rt));
+ /* Push Tunnel header. */
+ tnl_vport->tnl_ops->build_header(vport, skb, tunnel_hlen);
+
/* Push IP header. */
iph = ip_hdr(skb);
iph->version = 4;
iph->ihl = sizeof(struct iphdr) >> 2;
iph->protocol = tnl_vport->tnl_ops->ipproto;
- iph->daddr = daddr;
+ iph->daddr = OVS_CB(skb)->tun_key->ipv4_dst;
iph->saddr = saddr;
- iph->tos = tos;
- iph->ttl = ttl;
- iph->frag_off = frag_off;
+ iph->tos = OVS_CB(skb)->tun_key->ipv4_tos;
+ iph->ttl = OVS_CB(skb)->tun_key->ipv4_ttl;
+ iph->frag_off = OVS_CB(skb)->tun_key->tun_flags &
+ OVS_TNL_F_DONT_FRAGMENT ? htons(IP_DF) : 0;
ip_select_ident(iph, &rt_dst(rt), NULL);
- /* Push Tunnel header. */
- skb = tnl_vport->tnl_ops->build_header(vport, mutable,
- &rt_dst(rt), skb, tunnel_hlen);
- if (unlikely(!skb))
+ memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
+
+ err = ip_local_out(skb);
+ if (unlikely(net_xmit_eval(err)))
goto next;
- sent_len += send_frags(skb, tunnel_hlen);
+ sent_len += frag_len;
next:
skb = next_skb;
err_free_rt:
ip_rt_put(rt);
error_free:
- ovs_tnl_free_linked_skbs(skb);
+ kfree_skb(skb);
ovs_vport_record_error(vport, err);
return sent_len;
}
-static const struct nla_policy tnl_policy[OVS_TUNNEL_ATTR_MAX + 1] = {
- [OVS_TUNNEL_ATTR_FLAGS] = { .type = NLA_U32 },
- [OVS_TUNNEL_ATTR_DST_IPV4] = { .type = NLA_U32 },
- [OVS_TUNNEL_ATTR_SRC_IPV4] = { .type = NLA_U32 },
- [OVS_TUNNEL_ATTR_OUT_KEY] = { .type = NLA_U64 },
- [OVS_TUNNEL_ATTR_IN_KEY] = { .type = NLA_U64 },
- [OVS_TUNNEL_ATTR_TOS] = { .type = NLA_U8 },
- [OVS_TUNNEL_ATTR_TTL] = { .type = NLA_U8 },
- [OVS_TUNNEL_ATTR_DST_PORT] = { .type = NLA_U16 },
-};
-
-/* Sets OVS_TUNNEL_ATTR_* fields in 'mutable', which must initially be
- * zeroed. */
-static int tnl_set_config(struct net *net, struct nlattr *options,
- const struct tnl_ops *tnl_ops,
- const struct vport *cur_vport,
- struct tnl_mutable_config *mutable)
-{
- const struct vport *old_vport;
- const struct tnl_mutable_config *old_mutable;
- struct nlattr *a[OVS_TUNNEL_ATTR_MAX + 1];
- int err;
-
- port_key_set_net(&mutable->key, net);
- mutable->key.tunnel_type = tnl_ops->tunnel_type;
- if (!options)
- goto out;
-
- err = nla_parse_nested(a, OVS_TUNNEL_ATTR_MAX, options, tnl_policy);
- if (err)
- return err;
-
- /* Process attributes possibly useful for null_ports first */
- if (a[OVS_TUNNEL_ATTR_DST_PORT])
- mutable->dst_port =
- htons(nla_get_u16(a[OVS_TUNNEL_ATTR_DST_PORT]));
-
- if (a[OVS_TUNNEL_ATTR_DST_IPV4])
- mutable->key.daddr = nla_get_be32(a[OVS_TUNNEL_ATTR_DST_IPV4]);
-
- /* Skip the rest if configuring a null_port */
- if (!mutable->key.daddr)
- goto out;
-
- if (a[OVS_TUNNEL_ATTR_FLAGS])
- mutable->flags = nla_get_u32(a[OVS_TUNNEL_ATTR_FLAGS])
- & TNL_F_PUBLIC;
-
- if (a[OVS_TUNNEL_ATTR_SRC_IPV4]) {
- if (ipv4_is_multicast(mutable->key.daddr))
- return -EINVAL;
- mutable->key.saddr = nla_get_be32(a[OVS_TUNNEL_ATTR_SRC_IPV4]);
- }
-
- if (a[OVS_TUNNEL_ATTR_TOS]) {
- mutable->tos = nla_get_u8(a[OVS_TUNNEL_ATTR_TOS]);
- /* Reject ToS config with ECN bits set. */
- if (mutable->tos & INET_ECN_MASK)
- return -EINVAL;
- }
-
- if (a[OVS_TUNNEL_ATTR_TTL])
- mutable->ttl = nla_get_u8(a[OVS_TUNNEL_ATTR_TTL]);
-
- if (!a[OVS_TUNNEL_ATTR_IN_KEY]) {
- mutable->key.tunnel_type |= TNL_T_KEY_MATCH;
- mutable->flags |= TNL_F_IN_KEY_MATCH;
- } else {
- mutable->key.tunnel_type |= TNL_T_KEY_EXACT;
- mutable->key.in_key = nla_get_be64(a[OVS_TUNNEL_ATTR_IN_KEY]);
- }
-
- if (!a[OVS_TUNNEL_ATTR_OUT_KEY])
- mutable->flags |= TNL_F_OUT_KEY_ACTION;
- else
- mutable->out_key = nla_get_be64(a[OVS_TUNNEL_ATTR_OUT_KEY]);
-
- mutable->mlink = 0;
- if (ipv4_is_multicast(mutable->key.daddr)) {
- struct net_device *dev;
- struct rtable *rt;
- __be32 saddr = mutable->key.saddr;
-
- rt = find_route(port_key_get_net(&mutable->key),
- &saddr, mutable->key.daddr,
- tnl_ops->ipproto, mutable->tos, 0);
- if (IS_ERR(rt))
- return -EADDRNOTAVAIL;
- dev = rt_dst(rt).dev;
- ip_rt_put(rt);
- if (__in_dev_get_rtnl(dev) == NULL)
- return -EADDRNOTAVAIL;
- mutable->mlink = dev->ifindex;
- ip_mc_inc_group(__in_dev_get_rtnl(dev), mutable->key.daddr);
- }
-
-out:
- old_vport = port_table_lookup(&mutable->key, &old_mutable);
- if (old_vport && old_vport != cur_vport)
- return -EEXIST;
-
- return 0;
-}
-
struct vport *ovs_tnl_create(const struct vport_parms *parms,
const struct vport_ops *vport_ops,
const struct tnl_ops *tnl_ops)
{
struct vport *vport;
struct tnl_vport *tnl_vport;
- struct tnl_mutable_config *mutable;
int err;
vport = ovs_vport_alloc(sizeof(struct tnl_vport), vport_ops, parms);
strcpy(tnl_vport->name, parms->name);
tnl_vport->tnl_ops = tnl_ops;
- mutable = kzalloc(sizeof(struct tnl_mutable_config), GFP_KERNEL);
- if (!mutable) {
- err = -ENOMEM;
- goto error_free_vport;
- }
-
- err = tnl_set_config(ovs_dp_get_net(parms->dp), parms->options, tnl_ops,
- NULL, mutable);
- if (err)
- goto error_free_mutable;
-
- rcu_assign_pointer(tnl_vport->mutable, mutable);
-
- port_table_add_port(vport);
return vport;
-error_free_mutable:
- free_mutable_rtnl(mutable);
- kfree(mutable);
-error_free_vport:
- ovs_vport_free(vport);
error:
return ERR_PTR(err);
}
-int ovs_tnl_set_options(struct vport *vport, struct nlattr *options)
-{
- struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- const struct tnl_mutable_config *old_mutable;
- struct tnl_mutable_config *mutable;
- int err;
-
- old_mutable = rtnl_dereference(tnl_vport->mutable);
- if (!old_mutable->key.daddr)
- return -EINVAL;
-
- mutable = kzalloc(sizeof(struct tnl_mutable_config), GFP_KERNEL);
- if (!mutable) {
- err = -ENOMEM;
- goto error;
- }
-
- /* Parse the others configured by userspace. */
- err = tnl_set_config(ovs_dp_get_net(vport->dp), options, tnl_vport->tnl_ops,
- vport, mutable);
- if (err)
- goto error_free;
-
- if (port_hash(&mutable->key) != port_hash(&old_mutable->key))
- port_table_move_port(vport, mutable);
- else
- assign_config_rcu(vport, mutable);
-
- return 0;
-
-error_free:
- free_mutable_rtnl(mutable);
- kfree(mutable);
-error:
- return err;
-}
-
-int ovs_tnl_get_options(const struct vport *vport, struct sk_buff *skb)
-{
- const struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- const struct tnl_mutable_config *mutable = rcu_dereference_rtnl(tnl_vport->mutable);
-
- if (mutable->dst_port && nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT,
- ntohs(mutable->dst_port)))
- goto nla_put_failure;
-
- /* Skip the rest for null_ports */
- if (!mutable->key.daddr)
- return 0;
-
- if (nla_put_be32(skb, OVS_TUNNEL_ATTR_DST_IPV4, mutable->key.daddr))
- goto nla_put_failure;
- if (nla_put_u32(skb, OVS_TUNNEL_ATTR_FLAGS,
- mutable->flags & TNL_F_PUBLIC))
- goto nla_put_failure;
- if (!(mutable->flags & TNL_F_IN_KEY_MATCH) &&
- nla_put_be64(skb, OVS_TUNNEL_ATTR_IN_KEY, mutable->key.in_key))
- goto nla_put_failure;
- if (!(mutable->flags & TNL_F_OUT_KEY_ACTION) &&
- nla_put_be64(skb, OVS_TUNNEL_ATTR_OUT_KEY, mutable->out_key))
- goto nla_put_failure;
- if (mutable->key.saddr &&
- nla_put_be32(skb, OVS_TUNNEL_ATTR_SRC_IPV4, mutable->key.saddr))
- goto nla_put_failure;
- if (mutable->tos && nla_put_u8(skb, OVS_TUNNEL_ATTR_TOS, mutable->tos))
- goto nla_put_failure;
- if (mutable->ttl && nla_put_u8(skb, OVS_TUNNEL_ATTR_TTL, mutable->ttl))
- goto nla_put_failure;
-
- return 0;
-
-nla_put_failure:
- return -EMSGSIZE;
-}
-
static void free_port_rcu(struct rcu_head *rcu)
{
struct tnl_vport *tnl_vport = container_of(rcu,
struct tnl_vport, rcu);
- kfree((struct tnl_mutable __force *)tnl_vport->mutable);
- ovs_vport_free(tnl_vport_to_vport(tnl_vport));
+ ovs_vport_free(vport_from_priv(tnl_vport));
}
void ovs_tnl_destroy(struct vport *vport)
{
struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
- struct tnl_mutable_config *mutable;
- mutable = rtnl_dereference(tnl_vport->mutable);
- port_table_remove_port(vport);
- free_mutable_rtnl(mutable);
call_rcu(&tnl_vport->rcu, free_port_rcu);
}
const struct tnl_vport *tnl_vport = tnl_vport_priv(vport);
return tnl_vport->name;
}
-
-void ovs_tnl_free_linked_skbs(struct sk_buff *skb)
-{
- while (skb) {
- struct sk_buff *next = skb->next;
- kfree_skb(skb);
- skb = next;
- }
-}
-
-int ovs_tnl_init(void)
-{
- int i;
-
- port_table = kmalloc(PORT_TABLE_SIZE * sizeof(struct hlist_head *),
- GFP_KERNEL);
- if (!port_table)
- return -ENOMEM;
-
- for (i = 0; i < PORT_TABLE_SIZE; i++)
- INIT_HLIST_HEAD(&port_table[i]);
-
- return 0;
-}
-
-void ovs_tnl_exit(void)
-{
- kfree(port_table);
-}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff