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-rw-r--r--net/openvswitch/Kconfig11
-rw-r--r--net/openvswitch/Makefile4
-rw-r--r--net/openvswitch/actions.c266
-rw-r--r--net/openvswitch/datapath.c116
-rw-r--r--net/openvswitch/datapath.h23
-rw-r--r--net/openvswitch/flow.c123
-rw-r--r--net/openvswitch/flow.h54
-rw-r--r--net/openvswitch/flow_netlink.c292
-rw-r--r--net/openvswitch/flow_netlink.h4
-rw-r--r--net/openvswitch/vport-geneve.c235
-rw-r--r--net/openvswitch/vport-gre.c33
-rw-r--r--net/openvswitch/vport-vxlan.c27
-rw-r--r--net/openvswitch/vport.c45
-rw-r--r--net/openvswitch/vport.h14
14 files changed, 1014 insertions, 233 deletions
diff --git a/net/openvswitch/Kconfig b/net/openvswitch/Kconfig
index 6ecf491ad509..ba3bb8203b99 100644
--- a/net/openvswitch/Kconfig
+++ b/net/openvswitch/Kconfig
@@ -54,3 +54,14 @@ config OPENVSWITCH_VXLAN
Say N to exclude this support and reduce the binary size.
If unsure, say Y.
+
+config OPENVSWITCH_GENEVE
+ bool "Open vSwitch Geneve tunneling support"
+ depends on INET
+ depends on OPENVSWITCH
+ depends on GENEVE && !(OPENVSWITCH=y && GENEVE=m)
+ default y
+ ---help---
+ If you say Y here, then the Open vSwitch will be able create geneve vport.
+
+ Say N to exclude this support and reduce the binary size.
diff --git a/net/openvswitch/Makefile b/net/openvswitch/Makefile
index 3591cb5dae91..9a33a273c375 100644
--- a/net/openvswitch/Makefile
+++ b/net/openvswitch/Makefile
@@ -15,6 +15,10 @@ openvswitch-y := \
vport-internal_dev.o \
vport-netdev.o
+ifneq ($(CONFIG_OPENVSWITCH_GENEVE),)
+openvswitch-y += vport-geneve.o
+endif
+
ifneq ($(CONFIG_OPENVSWITCH_VXLAN),)
openvswitch-y += vport-vxlan.o
endif
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index fe5cda0deb39..006886dbee36 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2013 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, 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
@@ -35,13 +35,83 @@
#include <net/sctp/checksum.h>
#include "datapath.h"
+#include "flow.h"
#include "vport.h"
static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
+ struct sw_flow_key *key,
const struct nlattr *attr, int len);
+struct deferred_action {
+ struct sk_buff *skb;
+ const struct nlattr *actions;
+
+ /* Store pkt_key clone when creating deferred action. */
+ struct sw_flow_key pkt_key;
+};
+
+#define DEFERRED_ACTION_FIFO_SIZE 10
+struct action_fifo {
+ int head;
+ int tail;
+ /* Deferred action fifo queue storage. */
+ struct deferred_action fifo[DEFERRED_ACTION_FIFO_SIZE];
+};
+
+static struct action_fifo __percpu *action_fifos;
+static DEFINE_PER_CPU(int, exec_actions_level);
+
+static void action_fifo_init(struct action_fifo *fifo)
+{
+ fifo->head = 0;
+ fifo->tail = 0;
+}
+
+static bool action_fifo_is_empty(struct action_fifo *fifo)
+{
+ return (fifo->head == fifo->tail);
+}
+
+static struct deferred_action *action_fifo_get(struct action_fifo *fifo)
+{
+ if (action_fifo_is_empty(fifo))
+ return NULL;
+
+ return &fifo->fifo[fifo->tail++];
+}
+
+static struct deferred_action *action_fifo_put(struct action_fifo *fifo)
+{
+ if (fifo->head >= DEFERRED_ACTION_FIFO_SIZE - 1)
+ return NULL;
+
+ return &fifo->fifo[fifo->head++];
+}
+
+/* Return true if fifo is not full */
+static struct deferred_action *add_deferred_actions(struct sk_buff *skb,
+ struct sw_flow_key *key,
+ const struct nlattr *attr)
+{
+ struct action_fifo *fifo;
+ struct deferred_action *da;
+
+ fifo = this_cpu_ptr(action_fifos);
+ da = action_fifo_put(fifo);
+ if (da) {
+ da->skb = skb;
+ da->actions = attr;
+ da->pkt_key = *key;
+ }
+
+ return da;
+}
+
static int make_writable(struct sk_buff *skb, int write_len)
{
+ if (!pskb_may_pull(skb, write_len))
+ return -ENOMEM;
+
if (!skb_cloned(skb) || skb_clone_writable(skb, write_len))
return 0;
@@ -70,6 +140,8 @@ static int __pop_vlan_tci(struct sk_buff *skb, __be16 *current_tci)
vlan_set_encap_proto(skb, vhdr);
skb->mac_header += VLAN_HLEN;
+ if (skb_network_offset(skb) < ETH_HLEN)
+ skb_set_network_header(skb, ETH_HLEN);
skb_reset_mac_len(skb);
return 0;
@@ -405,16 +477,14 @@ static int do_output(struct datapath *dp, struct sk_buff *skb, int out_port)
}
static int output_userspace(struct datapath *dp, struct sk_buff *skb,
- const struct nlattr *attr)
+ struct sw_flow_key *key, const struct nlattr *attr)
{
struct dp_upcall_info upcall;
const struct nlattr *a;
int rem;
- BUG_ON(!OVS_CB(skb)->pkt_key);
-
upcall.cmd = OVS_PACKET_CMD_ACTION;
- upcall.key = OVS_CB(skb)->pkt_key;
+ upcall.key = key;
upcall.userdata = NULL;
upcall.portid = 0;
@@ -440,11 +510,10 @@ static bool last_action(const struct nlattr *a, int rem)
}
static int sample(struct datapath *dp, struct sk_buff *skb,
- const struct nlattr *attr)
+ struct sw_flow_key *key, const struct nlattr *attr)
{
const struct nlattr *acts_list = NULL;
const struct nlattr *a;
- struct sk_buff *sample_skb;
int rem;
for (a = nla_data(attr), rem = nla_len(attr); rem > 0;
@@ -464,31 +533,47 @@ static int sample(struct datapath *dp, struct sk_buff *skb,
rem = nla_len(acts_list);
a = nla_data(acts_list);
- /* Actions list is either empty or only contains a single user-space
- * action, the latter being a special case as it is the only known
- * usage of the sample action.
- * In these special cases don't clone the skb as there are no
- * side-effects in the nested actions.
- * Otherwise, clone in case the nested actions have side effects.
+ /* Actions list is empty, do nothing */
+ if (unlikely(!rem))
+ return 0;
+
+ /* The only known usage of sample action is having a single user-space
+ * action. Treat this usage as a special case.
+ * The output_userspace() should clone the skb to be sent to the
+ * user space. This skb will be consumed by its caller.
*/
- if (likely(rem == 0 || (nla_type(a) == OVS_ACTION_ATTR_USERSPACE &&
- last_action(a, rem)))) {
- sample_skb = skb;
- skb_get(skb);
- } else {
- sample_skb = skb_clone(skb, GFP_ATOMIC);
- if (!sample_skb) /* Skip sample action when out of memory. */
- return 0;
+ if (likely(nla_type(a) == OVS_ACTION_ATTR_USERSPACE &&
+ last_action(a, rem)))
+ return output_userspace(dp, skb, key, a);
+
+ skb = skb_clone(skb, GFP_ATOMIC);
+ if (!skb)
+ /* Skip the sample action when out of memory. */
+ return 0;
+
+ if (!add_deferred_actions(skb, key, a)) {
+ if (net_ratelimit())
+ pr_warn("%s: deferred actions limit reached, dropping sample action\n",
+ ovs_dp_name(dp));
+
+ kfree_skb(skb);
}
+ return 0;
+}
- /* Note that do_execute_actions() never consumes skb.
- * In the case where skb has been cloned above it is the clone that
- * is consumed. Otherwise the skb_get(skb) call prevents
- * consumption by do_execute_actions(). Thus, it is safe to simply
- * return the error code and let the caller (also
- * do_execute_actions()) free skb on error.
- */
- return do_execute_actions(dp, sample_skb, a, rem);
+static void execute_hash(struct sk_buff *skb, struct sw_flow_key *key,
+ const struct nlattr *attr)
+{
+ struct ovs_action_hash *hash_act = nla_data(attr);
+ u32 hash = 0;
+
+ /* OVS_HASH_ALG_L4 is the only possible hash algorithm. */
+ hash = skb_get_hash(skb);
+ hash = jhash_1word(hash, hash_act->hash_basis);
+ if (!hash)
+ hash = 0x1;
+
+ key->ovs_flow_hash = hash;
}
static int execute_set_action(struct sk_buff *skb,
@@ -505,8 +590,8 @@ static int execute_set_action(struct sk_buff *skb,
skb->mark = nla_get_u32(nested_attr);
break;
- case OVS_KEY_ATTR_IPV4_TUNNEL:
- OVS_CB(skb)->tun_key = nla_data(nested_attr);
+ case OVS_KEY_ATTR_TUNNEL_INFO:
+ OVS_CB(skb)->egress_tun_info = nla_data(nested_attr);
break;
case OVS_KEY_ATTR_ETHERNET:
@@ -537,8 +622,47 @@ static int execute_set_action(struct sk_buff *skb,
return err;
}
+static int execute_recirc(struct datapath *dp, struct sk_buff *skb,
+ struct sw_flow_key *key,
+ const struct nlattr *a, int rem)
+{
+ struct deferred_action *da;
+ int err;
+
+ err = ovs_flow_key_update(skb, key);
+ if (err)
+ return err;
+
+ if (!last_action(a, rem)) {
+ /* Recirc action is the not the last action
+ * of the action list, need to clone the skb.
+ */
+ skb = skb_clone(skb, GFP_ATOMIC);
+
+ /* Skip the recirc action when out of memory, but
+ * continue on with the rest of the action list.
+ */
+ if (!skb)
+ return 0;
+ }
+
+ da = add_deferred_actions(skb, key, NULL);
+ if (da) {
+ da->pkt_key.recirc_id = nla_get_u32(a);
+ } else {
+ kfree_skb(skb);
+
+ if (net_ratelimit())
+ pr_warn("%s: deferred action limit reached, drop recirc action\n",
+ ovs_dp_name(dp));
+ }
+
+ return 0;
+}
+
/* Execute a list of actions against 'skb'. */
static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
+ struct sw_flow_key *key,
const struct nlattr *attr, int len)
{
/* Every output action needs a separate clone of 'skb', but the common
@@ -564,7 +688,11 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
break;
case OVS_ACTION_ATTR_USERSPACE:
- output_userspace(dp, skb, a);
+ output_userspace(dp, skb, key, a);
+ break;
+
+ case OVS_ACTION_ATTR_HASH:
+ execute_hash(skb, key, a);
break;
case OVS_ACTION_ATTR_PUSH_VLAN:
@@ -577,12 +705,23 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
err = pop_vlan(skb);
break;
+ case OVS_ACTION_ATTR_RECIRC:
+ err = execute_recirc(dp, skb, key, a, rem);
+ if (last_action(a, rem)) {
+ /* If this is the last action, the skb has
+ * been consumed or freed.
+ * Return immediately.
+ */
+ return err;
+ }
+ break;
+
case OVS_ACTION_ATTR_SET:
err = execute_set_action(skb, nla_data(a));
break;
case OVS_ACTION_ATTR_SAMPLE:
- err = sample(dp, skb, a);
+ err = sample(dp, skb, key, a);
if (unlikely(err)) /* skb already freed. */
return err;
break;
@@ -602,11 +741,64 @@ static int do_execute_actions(struct datapath *dp, struct sk_buff *skb,
return 0;
}
+static void process_deferred_actions(struct datapath *dp)
+{
+ struct action_fifo *fifo = this_cpu_ptr(action_fifos);
+
+ /* Do not touch the FIFO in case there is no deferred actions. */
+ if (action_fifo_is_empty(fifo))
+ return;
+
+ /* Finishing executing all deferred actions. */
+ do {
+ struct deferred_action *da = action_fifo_get(fifo);
+ struct sk_buff *skb = da->skb;
+ struct sw_flow_key *key = &da->pkt_key;
+ const struct nlattr *actions = da->actions;
+
+ if (actions)
+ do_execute_actions(dp, skb, key, actions,
+ nla_len(actions));
+ else
+ ovs_dp_process_packet(skb, key);
+ } while (!action_fifo_is_empty(fifo));
+
+ /* Reset FIFO for the next packet. */
+ action_fifo_init(fifo);
+}
+
/* Execute a list of actions against 'skb'. */
-int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb)
+int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb,
+ struct sw_flow_key *key)
+{
+ int level = this_cpu_read(exec_actions_level);
+ struct sw_flow_actions *acts;
+ int err;
+
+ acts = rcu_dereference(OVS_CB(skb)->flow->sf_acts);
+
+ this_cpu_inc(exec_actions_level);
+ OVS_CB(skb)->egress_tun_info = NULL;
+ err = do_execute_actions(dp, skb, key,
+ acts->actions, acts->actions_len);
+
+ if (!level)
+ process_deferred_actions(dp);
+
+ this_cpu_dec(exec_actions_level);
+ return err;
+}
+
+int action_fifos_init(void)
{
- struct sw_flow_actions *acts = rcu_dereference(OVS_CB(skb)->flow->sf_acts);
+ action_fifos = alloc_percpu(struct action_fifo);
+ if (!action_fifos)
+ return -ENOMEM;
- OVS_CB(skb)->tun_key = NULL;
- return do_execute_actions(dp, skb, acts->actions, acts->actions_len);
+ return 0;
+}
+
+void action_fifos_exit(void)
+{
+ free_percpu(action_fifos);
}
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 7228ec3faf19..2e31d9e7f4dc 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -78,11 +78,12 @@ static const struct genl_multicast_group ovs_dp_vport_multicast_group = {
/* Check if need to build a reply message.
* OVS userspace sets the NLM_F_ECHO flag if it needs the reply. */
-static bool ovs_must_notify(struct genl_info *info,
- const struct genl_multicast_group *grp)
+static bool ovs_must_notify(struct genl_family *family, struct genl_info *info,
+ unsigned int group)
{
return info->nlhdr->nlmsg_flags & NLM_F_ECHO ||
- netlink_has_listeners(genl_info_net(info)->genl_sock, 0);
+ genl_has_listeners(family, genl_info_net(info)->genl_sock,
+ group);
}
static void ovs_notify(struct genl_family *family,
@@ -156,7 +157,7 @@ static struct datapath *get_dp(struct net *net, int dp_ifindex)
}
/* Must be called with rcu_read_lock or ovs_mutex. */
-static const char *ovs_dp_name(const struct datapath *dp)
+const char *ovs_dp_name(const struct datapath *dp)
{
struct vport *vport = ovs_vport_ovsl_rcu(dp, OVSP_LOCAL);
return vport->ops->get_name(vport);
@@ -237,45 +238,40 @@ void ovs_dp_detach_port(struct vport *p)
}
/* Must be called with rcu_read_lock. */
-void ovs_dp_process_received_packet(struct vport *p, struct sk_buff *skb)
+void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key)
{
+ const struct vport *p = OVS_CB(skb)->input_vport;
struct datapath *dp = p->dp;
struct sw_flow *flow;
struct dp_stats_percpu *stats;
- struct sw_flow_key key;
u64 *stats_counter;
u32 n_mask_hit;
- int error;
stats = this_cpu_ptr(dp->stats_percpu);
- /* Extract flow from 'skb' into 'key'. */
- error = ovs_flow_extract(skb, p->port_no, &key);
- if (unlikely(error)) {
- kfree_skb(skb);
- return;
- }
-
/* Look up flow. */
- flow = ovs_flow_tbl_lookup_stats(&dp->table, &key, &n_mask_hit);
+ flow = ovs_flow_tbl_lookup_stats(&dp->table, key, &n_mask_hit);
if (unlikely(!flow)) {
struct dp_upcall_info upcall;
+ int error;
upcall.cmd = OVS_PACKET_CMD_MISS;
- upcall.key = &key;
+ upcall.key = key;
upcall.userdata = NULL;
upcall.portid = ovs_vport_find_upcall_portid(p, skb);
- ovs_dp_upcall(dp, skb, &upcall);
- consume_skb(skb);
+ error = ovs_dp_upcall(dp, skb, &upcall);
+ if (unlikely(error))
+ kfree_skb(skb);
+ else
+ consume_skb(skb);
stats_counter = &stats->n_missed;
goto out;
}
OVS_CB(skb)->flow = flow;
- OVS_CB(skb)->pkt_key = &key;
- ovs_flow_stats_update(OVS_CB(skb)->flow, key.tp.flags, skb);
- ovs_execute_actions(dp, skb);
+ ovs_flow_stats_update(OVS_CB(skb)->flow, key->tp.flags, skb);
+ ovs_execute_actions(dp, skb, key);
stats_counter = &stats->n_hit;
out:
@@ -373,6 +369,8 @@ static size_t key_attr_size(void)
+ nla_total_size(1) /* OVS_TUNNEL_KEY_ATTR_TTL */
+ nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT */
+ nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_CSUM */
+ + nla_total_size(0) /* OVS_TUNNEL_KEY_ATTR_OAM */
+ + nla_total_size(256) /* OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS */
+ nla_total_size(4) /* OVS_KEY_ATTR_IN_PORT */
+ nla_total_size(4) /* OVS_KEY_ATTR_SKB_MARK */
+ nla_total_size(12) /* OVS_KEY_ATTR_ETHERNET */
@@ -404,7 +402,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
{
struct ovs_header *upcall;
struct sk_buff *nskb = NULL;
- struct sk_buff *user_skb; /* to be queued to userspace */
+ struct sk_buff *user_skb = NULL; /* to be queued to userspace */
struct nlattr *nla;
struct genl_info info = {
.dst_sk = ovs_dp_get_net(dp)->genl_sock,
@@ -494,9 +492,11 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
((struct nlmsghdr *) user_skb->data)->nlmsg_len = user_skb->len;
err = genlmsg_unicast(ovs_dp_get_net(dp), user_skb, upcall_info->portid);
+ user_skb = NULL;
out:
if (err)
skb_tx_error(skb);
+ kfree_skb(user_skb);
kfree_skb(nskb);
return err;
}
@@ -510,6 +510,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
struct sw_flow *flow;
struct datapath *dp;
struct ethhdr *eth;
+ struct vport *input_vport;
int len;
int err;
@@ -544,13 +545,11 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
if (IS_ERR(flow))
goto err_kfree_skb;
- err = ovs_flow_extract(packet, -1, &flow->key);
+ err = ovs_flow_key_extract_userspace(a[OVS_PACKET_ATTR_KEY], packet,
+ &flow->key);
if (err)
goto err_flow_free;
- err = ovs_nla_get_flow_metadata(flow, a[OVS_PACKET_ATTR_KEY]);
- if (err)
- goto err_flow_free;
acts = ovs_nla_alloc_flow_actions(nla_len(a[OVS_PACKET_ATTR_ACTIONS]));
err = PTR_ERR(acts);
if (IS_ERR(acts))
@@ -558,12 +557,13 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
err = ovs_nla_copy_actions(a[OVS_PACKET_ATTR_ACTIONS],
&flow->key, 0, &acts);
- rcu_assign_pointer(flow->sf_acts, acts);
if (err)
goto err_flow_free;
+ rcu_assign_pointer(flow->sf_acts, acts);
+
+ OVS_CB(packet)->egress_tun_info = NULL;
OVS_CB(packet)->flow = flow;
- OVS_CB(packet)->pkt_key = &flow->key;
packet->priority = flow->key.phy.priority;
packet->mark = flow->key.phy.skb_mark;
@@ -573,8 +573,17 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
if (!dp)
goto err_unlock;
+ input_vport = ovs_vport_rcu(dp, flow->key.phy.in_port);
+ if (!input_vport)
+ input_vport = ovs_vport_rcu(dp, OVSP_LOCAL);
+
+ if (!input_vport)
+ goto err_unlock;
+
+ OVS_CB(packet)->input_vport = input_vport;
+
local_bh_disable();
- err = ovs_execute_actions(dp, packet);
+ err = ovs_execute_actions(dp, packet, &flow->key);
local_bh_enable();
rcu_read_unlock();
@@ -758,7 +767,7 @@ static struct sk_buff *ovs_flow_cmd_alloc_info(const struct sw_flow_actions *act
{
struct sk_buff *skb;
- if (!always && !ovs_must_notify(info, &ovs_dp_flow_multicast_group))
+ if (!always && !ovs_must_notify(&dp_flow_genl_family, info, 0))
return NULL;
skb = genlmsg_new_unicast(ovs_flow_cmd_msg_size(acts), info, GFP_KERNEL);
@@ -927,11 +936,34 @@ error:
return error;
}
+static struct sw_flow_actions *get_flow_actions(const struct nlattr *a,
+ const struct sw_flow_key *key,
+ const struct sw_flow_mask *mask)
+{
+ struct sw_flow_actions *acts;
+ struct sw_flow_key masked_key;
+ int error;
+
+ acts = ovs_nla_alloc_flow_actions(nla_len(a));
+ if (IS_ERR(acts))
+ return acts;
+
+ ovs_flow_mask_key(&masked_key, key, mask);
+ error = ovs_nla_copy_actions(a, &masked_key, 0, &acts);
+ if (error) {
+ OVS_NLERR("Flow actions may not be safe on all matching packets.\n");
+ kfree(acts);
+ return ERR_PTR(error);
+ }
+
+ return acts;
+}
+
static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr **a = info->attrs;
struct ovs_header *ovs_header = info->userhdr;
- struct sw_flow_key key, masked_key;
+ struct sw_flow_key key;
struct sw_flow *flow;
struct sw_flow_mask mask;
struct sk_buff *reply = NULL;
@@ -953,17 +985,10 @@ static int ovs_flow_cmd_set(struct sk_buff *skb, struct genl_info *info)
/* Validate actions. */
if (a[OVS_FLOW_ATTR_ACTIONS]) {
- acts = ovs_nla_alloc_flow_actions(nla_len(a[OVS_FLOW_ATTR_ACTIONS]));
- error = PTR_ERR(acts);
- if (IS_ERR(acts))
+ acts = get_flow_actions(a[OVS_FLOW_ATTR_ACTIONS], &key, &mask);
+ if (IS_ERR(acts)) {
+ error = PTR_ERR(acts);
goto error;
-
- ovs_flow_mask_key(&masked_key, &key, &mask);
- error = ovs_nla_copy_actions(a[OVS_FLOW_ATTR_ACTIONS],
- &masked_key, 0, &acts);
- if (error) {
- OVS_NLERR("Flow actions may not be safe on all matching packets.\n");
- goto err_kfree_acts;
}
}
@@ -2061,10 +2086,14 @@ static int __init dp_init(void)
pr_info("Open vSwitch switching datapath\n");
- err = ovs_internal_dev_rtnl_link_register();
+ err = action_fifos_init();
if (err)
goto error;
+ err = ovs_internal_dev_rtnl_link_register();
+ if (err)
+ goto error_action_fifos_exit;
+
err = ovs_flow_init();
if (err)
goto error_unreg_rtnl_link;
@@ -2097,6 +2126,8 @@ error_flow_exit:
ovs_flow_exit();
error_unreg_rtnl_link:
ovs_internal_dev_rtnl_link_unregister();
+error_action_fifos_exit:
+ action_fifos_exit();
error:
return err;
}
@@ -2110,6 +2141,7 @@ static void dp_cleanup(void)
ovs_vport_exit();
ovs_flow_exit();
ovs_internal_dev_rtnl_link_unregister();
+ action_fifos_exit();
}
module_init(dp_init);
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index 701b5738c38a..974135439c5c 100644
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2012 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, 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
@@ -95,14 +95,15 @@ struct datapath {
/**
* struct ovs_skb_cb - OVS data in skb CB
* @flow: The flow associated with this packet. May be %NULL if no flow.
- * @pkt_key: The flow information extracted from the packet. Must be nonnull.
- * @tun_key: Key for the tunnel that encapsulated this packet. NULL if the
- * packet is not being tunneled.
+ * @egress_tun_key: Tunnel information about this packet on egress path.
+ * NULL if the packet is not being tunneled.
+ * @input_vport: The original vport packet came in on. This value is cached
+ * when a packet is received by OVS.
*/
struct ovs_skb_cb {
struct sw_flow *flow;
- struct sw_flow_key *pkt_key;
- struct ovs_key_ipv4_tunnel *tun_key;
+ struct ovs_tunnel_info *egress_tun_info;
+ struct vport *input_vport;
};
#define OVS_CB(skb) ((struct ovs_skb_cb *)(skb)->cb)
@@ -183,17 +184,23 @@ static inline struct vport *ovs_vport_ovsl(const struct datapath *dp, int port_n
extern struct notifier_block ovs_dp_device_notifier;
extern struct genl_family dp_vport_genl_family;
-void ovs_dp_process_received_packet(struct vport *, struct sk_buff *);
+void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key);
void ovs_dp_detach_port(struct vport *);
int ovs_dp_upcall(struct datapath *, struct sk_buff *,
const struct dp_upcall_info *);
+const char *ovs_dp_name(const struct datapath *dp);
struct sk_buff *ovs_vport_cmd_build_info(struct vport *, u32 pid, u32 seq,
u8 cmd);
-int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb);
+int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb,
+ struct sw_flow_key *);
+
void ovs_dp_notify_wq(struct work_struct *work);
+int action_fifos_init(void);
+void action_fifos_exit(void);
+
#define OVS_NLERR(fmt, ...) \
do { \
if (net_ratelimit()) \
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index d07ab538fc9d..62db02ba36bc 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2013 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, 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
@@ -16,8 +16,6 @@
* 02110-1301, USA
*/
-#include "flow.h"
-#include "datapath.h"
#include <linux/uaccess.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
@@ -46,6 +44,10 @@
#include <net/ipv6.h>
#include <net/ndisc.h>
+#include "datapath.h"
+#include "flow.h"
+#include "flow_netlink.h"
+
u64 ovs_flow_used_time(unsigned long flow_jiffies)
{
struct timespec cur_ts;
@@ -89,7 +91,7 @@ void ovs_flow_stats_update(struct sw_flow *flow, __be16 tcp_flags,
* allocated stats as we have already locked them.
*/
if (likely(flow->stats_last_writer != NUMA_NO_NODE)
- && likely(!rcu_dereference(flow->stats[node]))) {
+ && likely(!rcu_access_pointer(flow->stats[node]))) {
/* Try to allocate node-specific stats. */
struct flow_stats *new_stats;
@@ -420,10 +422,9 @@ invalid:
}
/**
- * ovs_flow_extract - extracts a flow key from an Ethernet frame.
+ * key_extract - extracts a flow key from an Ethernet frame.
* @skb: sk_buff that contains the frame, with skb->data pointing to the
* Ethernet header
- * @in_port: port number on which @skb was received.
* @key: output flow key
*
* The caller must ensure that skb->len >= ETH_HLEN.
@@ -442,18 +443,13 @@ invalid:
* of a correct length, otherwise the same as skb->network_header.
* For other key->eth.type values it is left untouched.
*/
-int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
+static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)
{
int error;
struct ethhdr *eth;
- memset(key, 0, sizeof(*key));
-
- key->phy.priority = skb->priority;
- if (OVS_CB(skb)->tun_key)
- memcpy(&key->tun_key, OVS_CB(skb)->tun_key, sizeof(key->tun_key));
- key->phy.in_port = in_port;
- key->phy.skb_mark = skb->mark;
+ /* Flags are always used as part of stats */
+ key->tp.flags = 0;
skb_reset_mac_header(skb);
@@ -469,6 +465,7 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
* update skb->csum here.
*/
+ key->eth.tci = 0;
if (vlan_tx_tag_present(skb))
key->eth.tci = htons(skb->vlan_tci);
else if (eth->h_proto == htons(ETH_P_8021Q))
@@ -489,6 +486,8 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
error = check_iphdr(skb);
if (unlikely(error)) {
+ memset(&key->ip, 0, sizeof(key->ip));
+ memset(&key->ipv4, 0, sizeof(key->ipv4));
if (error == -EINVAL) {
skb->transport_header = skb->network_header;
error = 0;
@@ -510,8 +509,10 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
return 0;
}
if (nh->frag_off & htons(IP_MF) ||
- skb_shinfo(skb)->gso_type & SKB_GSO_UDP)
+ skb_shinfo(skb)->gso_type & SKB_GSO_UDP)
key->ip.frag = OVS_FRAG_TYPE_FIRST;
+ else
+ key->ip.frag = OVS_FRAG_TYPE_NONE;
/* Transport layer. */
if (key->ip.proto == IPPROTO_TCP) {
@@ -520,18 +521,25 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
key->tp.src = tcp->source;
key->tp.dst = tcp->dest;
key->tp.flags = TCP_FLAGS_BE16(tcp);
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
+
} else if (key->ip.proto == IPPROTO_UDP) {
if (udphdr_ok(skb)) {
struct udphdr *udp = udp_hdr(skb);
key->tp.src = udp->source;
key->tp.dst = udp->dest;
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
} else if (key->ip.proto == IPPROTO_SCTP) {
if (sctphdr_ok(skb)) {
struct sctphdr *sctp = sctp_hdr(skb);
key->tp.src = sctp->source;
key->tp.dst = sctp->dest;
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
} else if (key->ip.proto == IPPROTO_ICMP) {
if (icmphdr_ok(skb)) {
@@ -541,33 +549,44 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
* them in 16-bit network byte order. */
key->tp.src = htons(icmp->type);
key->tp.dst = htons(icmp->code);
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
}
- } else if ((key->eth.type == htons(ETH_P_ARP) ||
- key->eth.type == htons(ETH_P_RARP)) && arphdr_ok(skb)) {
+ } else if (key->eth.type == htons(ETH_P_ARP) ||
+ key->eth.type == htons(ETH_P_RARP)) {
struct arp_eth_header *arp;
arp = (struct arp_eth_header *)skb_network_header(skb);
- if (arp->ar_hrd == htons(ARPHRD_ETHER)
- && arp->ar_pro == htons(ETH_P_IP)
- && arp->ar_hln == ETH_ALEN
- && arp->ar_pln == 4) {
+ if (arphdr_ok(skb) &&
+ arp->ar_hrd == htons(ARPHRD_ETHER) &&
+ arp->ar_pro == htons(ETH_P_IP) &&
+ arp->ar_hln == ETH_ALEN &&
+ arp->ar_pln == 4) {
/* We only match on the lower 8 bits of the opcode. */
if (ntohs(arp->ar_op) <= 0xff)
key->ip.proto = ntohs(arp->ar_op);
+ else
+ key->ip.proto = 0;
+
memcpy(&key->ipv4.addr.src, arp->ar_sip, sizeof(key->ipv4.addr.src));
memcpy(&key->ipv4.addr.dst, arp->ar_tip, sizeof(key->ipv4.addr.dst));
ether_addr_copy(key->ipv4.arp.sha, arp->ar_sha);
ether_addr_copy(key->ipv4.arp.tha, arp->ar_tha);
+ } else {
+ memset(&key->ip, 0, sizeof(key->ip));
+ memset(&key->ipv4, 0, sizeof(key->ipv4));
}
} else if (key->eth.type == htons(ETH_P_IPV6)) {
int nh_len; /* IPv6 Header + Extensions */
nh_len = parse_ipv6hdr(skb, key);
if (unlikely(nh_len < 0)) {
+ memset(&key->ip, 0, sizeof(key->ip));
+ memset(&key->ipv6.addr, 0, sizeof(key->ipv6.addr));
if (nh_len == -EINVAL) {
skb->transport_header = skb->network_header;
error = 0;
@@ -589,27 +608,87 @@ int ovs_flow_extract(struct sk_buff *skb, u16 in_port, struct sw_flow_key *key)
key->tp.src = tcp->source;
key->tp.dst = tcp->dest;
key->tp.flags = TCP_FLAGS_BE16(tcp);
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
} else if (key->ip.proto == NEXTHDR_UDP) {
if (udphdr_ok(skb)) {
struct udphdr *udp = udp_hdr(skb);
key->tp.src = udp->source;
key->tp.dst = udp->dest;
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
} else if (key->ip.proto == NEXTHDR_SCTP) {
if (sctphdr_ok(skb)) {
struct sctphdr *sctp = sctp_hdr(skb);
key->tp.src = sctp->source;
key->tp.dst = sctp->dest;
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
} else if (key->ip.proto == NEXTHDR_ICMP) {
if (icmp6hdr_ok(skb)) {
error = parse_icmpv6(skb, key, nh_len);
if (error)
return error;
+ } else {
+ memset(&key->tp, 0, sizeof(key->tp));
}
}
}
-
return 0;
}
+
+int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key)
+{
+ return key_extract(skb, key);
+}
+
+int ovs_flow_key_extract(struct ovs_tunnel_info *tun_info,
+ struct sk_buff *skb, struct sw_flow_key *key)
+{
+ /* Extract metadata from packet. */
+ if (tun_info) {
+ memcpy(&key->tun_key, &tun_info->tunnel, sizeof(key->tun_key));
+
+ if (tun_info->options) {
+ BUILD_BUG_ON((1 << (sizeof(tun_info->options_len) *
+ 8)) - 1
+ > sizeof(key->tun_opts));
+ memcpy(GENEVE_OPTS(key, tun_info->options_len),
+ tun_info->options, tun_info->options_len);
+ key->tun_opts_len = tun_info->options_len;
+ } else {
+ key->tun_opts_len = 0;
+ }
+ } else {
+ key->tun_opts_len = 0;
+ memset(&key->tun_key, 0, sizeof(key->tun_key));
+ }
+
+ key->phy.priority = skb->priority;
+ key->phy.in_port = OVS_CB(skb)->input_vport->port_no;
+ key->phy.skb_mark = skb->mark;
+ key->ovs_flow_hash = 0;
+ key->recirc_id = 0;
+
+ /* Flags are always used as part of stats */
+ key->tp.flags = 0;
+
+ return key_extract(skb, key);
+}
+
+int ovs_flow_key_extract_userspace(const struct nlattr *attr,
+ struct sk_buff *skb,
+ struct sw_flow_key *key)
+{
+ int err;
+
+ /* Extract metadata from netlink attributes. */
+ err = ovs_nla_get_flow_metadata(attr, key);
+ if (err)
+ return err;
+
+ return key_extract(skb, key);
+}
diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 5e5aaed3a85b..71813318c8c7 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -49,29 +49,53 @@ struct ovs_key_ipv4_tunnel {
u8 ipv4_ttl;
} __packed __aligned(4); /* Minimize padding. */
-static inline void ovs_flow_tun_key_init(struct ovs_key_ipv4_tunnel *tun_key,
- const struct iphdr *iph, __be64 tun_id,
- __be16 tun_flags)
+struct ovs_tunnel_info {
+ struct ovs_key_ipv4_tunnel tunnel;
+ struct geneve_opt *options;
+ u8 options_len;
+};
+
+/* Store options at the end of the array if they are less than the
+ * maximum size. This allows us to get the benefits of variable length
+ * matching for small options.
+ */
+#define GENEVE_OPTS(flow_key, opt_len) \
+ ((struct geneve_opt *)((flow_key)->tun_opts + \
+ FIELD_SIZEOF(struct sw_flow_key, tun_opts) - \
+ opt_len))
+
+static inline void ovs_flow_tun_info_init(struct ovs_tunnel_info *tun_info,
+ const struct iphdr *iph,
+ __be64 tun_id, __be16 tun_flags,
+ struct geneve_opt *opts,
+ u8 opts_len)
{
- tun_key->tun_id = tun_id;
- tun_key->ipv4_src = iph->saddr;
- tun_key->ipv4_dst = iph->daddr;
- tun_key->ipv4_tos = iph->tos;
- tun_key->ipv4_ttl = iph->ttl;
- tun_key->tun_flags = tun_flags;
+ tun_info->tunnel.tun_id = tun_id;
+ tun_info->tunnel.ipv4_src = iph->saddr;
+ tun_info->tunnel.ipv4_dst = iph->daddr;
+ tun_info->tunnel.ipv4_tos = iph->tos;
+ tun_info->tunnel.ipv4_ttl = iph->ttl;
+ tun_info->tunnel.tun_flags = tun_flags;
/* clear struct padding. */
- memset((unsigned char *) tun_key + OVS_TUNNEL_KEY_SIZE, 0,
- sizeof(*tun_key) - OVS_TUNNEL_KEY_SIZE);
+ memset((unsigned char *)&tun_info->tunnel + OVS_TUNNEL_KEY_SIZE, 0,
+ sizeof(tun_info->tunnel) - OVS_TUNNEL_KEY_SIZE);
+
+ tun_info->options = opts;
+ tun_info->options_len = opts_len;
}
struct sw_flow_key {
+ u8 tun_opts[255];
+ u8 tun_opts_len;
struct ovs_key_ipv4_tunnel tun_key; /* Encapsulating tunnel key. */
struct {
u32 priority; /* Packet QoS priority. */
u32 skb_mark; /* SKB mark. */
u16 in_port; /* Input switch port (or DP_MAX_PORTS). */
} __packed phy; /* Safe when right after 'tun_key'. */
+ u32 ovs_flow_hash; /* Datapath computed hash value. */
+ u32 recirc_id; /* Recirculation ID. */
struct {
u8 src[ETH_ALEN]; /* Ethernet source address. */
u8 dst[ETH_ALEN]; /* Ethernet destination address. */
@@ -187,6 +211,12 @@ void ovs_flow_stats_get(const struct sw_flow *, struct ovs_flow_stats *,
void ovs_flow_stats_clear(struct sw_flow *);
u64 ovs_flow_used_time(unsigned long flow_jiffies);
-int ovs_flow_extract(struct sk_buff *, u16 in_port, struct sw_flow_key *);
+int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key);
+int ovs_flow_key_extract(struct ovs_tunnel_info *tun_info, struct sk_buff *skb,
+ struct sw_flow_key *key);
+/* Extract key from packet coming from userspace. */
+int ovs_flow_key_extract_userspace(const struct nlattr *attr,
+ struct sk_buff *skb,
+ struct sw_flow_key *key);
#endif /* flow.h */
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index d757848da89c..368f23307911 100644
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2013 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, 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
@@ -42,6 +42,7 @@
#include <linux/icmp.h>
#include <linux/icmpv6.h>
#include <linux/rculist.h>
+#include <net/geneve.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <net/ndisc.h>
@@ -88,18 +89,20 @@ static void update_range__(struct sw_flow_match *match,
} \
} while (0)
-#define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \
- do { \
- update_range__(match, offsetof(struct sw_flow_key, field), \
- len, is_mask); \
- if (is_mask) { \
- if ((match)->mask) \
- memcpy(&(match)->mask->key.field, value_p, len);\
- } else { \
- memcpy(&(match)->key->field, value_p, len); \
- } \
+#define SW_FLOW_KEY_MEMCPY_OFFSET(match, offset, value_p, len, is_mask) \
+ do { \
+ update_range__(match, offset, len, is_mask); \
+ if (is_mask) \
+ memcpy((u8 *)&(match)->mask->key + offset, value_p, \
+ len); \
+ else \
+ memcpy((u8 *)(match)->key + offset, value_p, len); \
} while (0)
+#define SW_FLOW_KEY_MEMCPY(match, field, value_p, len, is_mask) \
+ SW_FLOW_KEY_MEMCPY_OFFSET(match, offsetof(struct sw_flow_key, field), \
+ value_p, len, is_mask)
+
static u16 range_n_bytes(const struct sw_flow_key_range *range)
{
return range->end - range->start;
@@ -251,6 +254,8 @@ static const int ovs_key_lens[OVS_KEY_ATTR_MAX + 1] = {
[OVS_KEY_ATTR_ICMPV6] = sizeof(struct ovs_key_icmpv6),
[OVS_KEY_ATTR_ARP] = sizeof(struct ovs_key_arp),
[OVS_KEY_ATTR_ND] = sizeof(struct ovs_key_nd),
+ [OVS_KEY_ATTR_RECIRC_ID] = sizeof(u32),
+ [OVS_KEY_ATTR_DP_HASH] = sizeof(u32),
[OVS_KEY_ATTR_TUNNEL] = -1,
};
@@ -333,6 +338,7 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
int rem;
bool ttl = false;
__be16 tun_flags = 0;
+ unsigned long opt_key_offset;
nla_for_each_nested(a, attr, rem) {
int type = nla_type(a);
@@ -344,6 +350,8 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
[OVS_TUNNEL_KEY_ATTR_TTL] = 1,
[OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT] = 0,
[OVS_TUNNEL_KEY_ATTR_CSUM] = 0,
+ [OVS_TUNNEL_KEY_ATTR_OAM] = 0,
+ [OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS] = -1,
};
if (type > OVS_TUNNEL_KEY_ATTR_MAX) {
@@ -352,7 +360,8 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
return -EINVAL;
}
- if (ovs_tunnel_key_lens[type] != nla_len(a)) {
+ if (ovs_tunnel_key_lens[type] != nla_len(a) &&
+ ovs_tunnel_key_lens[type] != -1) {
OVS_NLERR("IPv4 tunnel attribute type has unexpected "
" length (type=%d, length=%d, expected=%d).\n",
type, nla_len(a), ovs_tunnel_key_lens[type]);
@@ -388,7 +397,63 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
case OVS_TUNNEL_KEY_ATTR_CSUM:
tun_flags |= TUNNEL_CSUM;
break;
+ case OVS_TUNNEL_KEY_ATTR_OAM:
+ tun_flags |= TUNNEL_OAM;
+ break;
+ case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS:
+ tun_flags |= TUNNEL_OPTIONS_PRESENT;
+ if (nla_len(a) > sizeof(match->key->tun_opts)) {
+ OVS_NLERR("Geneve option length exceeds maximum size (len %d, max %zu).\n",
+ nla_len(a),
+ sizeof(match->key->tun_opts));
+ return -EINVAL;
+ }
+
+ if (nla_len(a) % 4 != 0) {
+ OVS_NLERR("Geneve option length is not a multiple of 4 (len %d).\n",
+ nla_len(a));
+ return -EINVAL;
+ }
+
+ /* We need to record the length of the options passed
+ * down, otherwise packets with the same format but
+ * additional options will be silently matched.
+ */
+ if (!is_mask) {
+ SW_FLOW_KEY_PUT(match, tun_opts_len, nla_len(a),
+ false);
+ } else {
+ /* This is somewhat unusual because it looks at
+ * both the key and mask while parsing the
+ * attributes (and by extension assumes the key
+ * is parsed first). Normally, we would verify
+ * that each is the correct length and that the
+ * attributes line up in the validate function.
+ * However, that is difficult because this is
+ * variable length and we won't have the
+ * information later.
+ */
+ if (match->key->tun_opts_len != nla_len(a)) {
+ OVS_NLERR("Geneve option key length (%d) is different from mask length (%d).",
+ match->key->tun_opts_len,
+ nla_len(a));
+ return -EINVAL;
+ }
+
+ SW_FLOW_KEY_PUT(match, tun_opts_len, 0xff,
+ true);
+ }
+
+ opt_key_offset = (unsigned long)GENEVE_OPTS(
+ (struct sw_flow_key *)0,
+ nla_len(a));
+ SW_FLOW_KEY_MEMCPY_OFFSET(match, opt_key_offset,
+ nla_data(a), nla_len(a),
+ is_mask);
+ break;
default:
+ OVS_NLERR("Unknown IPv4 tunnel attribute (%d).\n",
+ type);
return -EINVAL;
}
}
@@ -415,45 +480,80 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
return 0;
}
-static int ipv4_tun_to_nlattr(struct sk_buff *skb,
- const struct ovs_key_ipv4_tunnel *tun_key,
- const struct ovs_key_ipv4_tunnel *output)
+static int __ipv4_tun_to_nlattr(struct sk_buff *skb,
+ const struct ovs_key_ipv4_tunnel *output,
+ const struct geneve_opt *tun_opts,
+ int swkey_tun_opts_len)
{
- struct nlattr *nla;
-
- nla = nla_nest_start(skb, OVS_KEY_ATTR_TUNNEL);
- if (!nla)
- return -EMSGSIZE;
-
if (output->tun_flags & TUNNEL_KEY &&
nla_put_be64(skb, OVS_TUNNEL_KEY_ATTR_ID, output->tun_id))
return -EMSGSIZE;
if (output->ipv4_src &&
- nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, output->ipv4_src))
+ nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, output->ipv4_src))
return -EMSGSIZE;
if (output->ipv4_dst &&
- nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, output->ipv4_dst))
+ nla_put_be32(skb, OVS_TUNNEL_KEY_ATTR_IPV4_DST, output->ipv4_dst))
return -EMSGSIZE;
if (output->ipv4_tos &&
- nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->ipv4_tos))
+ nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TOS, output->ipv4_tos))
return -EMSGSIZE;
if (nla_put_u8(skb, OVS_TUNNEL_KEY_ATTR_TTL, output->ipv4_ttl))
return -EMSGSIZE;
if ((output->tun_flags & TUNNEL_DONT_FRAGMENT) &&
- nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT))
+ nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT))
return -EMSGSIZE;
if ((output->tun_flags & TUNNEL_CSUM) &&
- nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM))
+ nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_CSUM))
+ return -EMSGSIZE;
+ if ((output->tun_flags & TUNNEL_OAM) &&
+ nla_put_flag(skb, OVS_TUNNEL_KEY_ATTR_OAM))
+ return -EMSGSIZE;
+ if (tun_opts &&
+ nla_put(skb, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS,
+ swkey_tun_opts_len, tun_opts))
return -EMSGSIZE;
- nla_nest_end(skb, nla);
return 0;
}
+static int ipv4_tun_to_nlattr(struct sk_buff *skb,
+ const struct ovs_key_ipv4_tunnel *output,
+ const struct geneve_opt *tun_opts,
+ int swkey_tun_opts_len)
+{
+ struct nlattr *nla;
+ int err;
+
+ nla = nla_nest_start(skb, OVS_KEY_ATTR_TUNNEL);
+ if (!nla)
+ return -EMSGSIZE;
+
+ err = __ipv4_tun_to_nlattr(skb, output, tun_opts, swkey_tun_opts_len);
+ if (err)
+ return err;
+
+ nla_nest_end(skb, nla);
+ return 0;
+}
+
static int metadata_from_nlattrs(struct sw_flow_match *match, u64 *attrs,
const struct nlattr **a, bool is_mask)
{
+ if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) {
+ u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]);
+
+ SW_FLOW_KEY_PUT(match, ovs_flow_hash, hash_val, is_mask);
+ *attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH);
+ }
+
+ if (*attrs & (1 << OVS_KEY_ATTR_RECIRC_ID)) {
+ u32 recirc_id = nla_get_u32(a[OVS_KEY_ATTR_RECIRC_ID]);
+
+ SW_FLOW_KEY_PUT(match, recirc_id, recirc_id, is_mask);
+ *attrs &= ~(1 << OVS_KEY_ATTR_RECIRC_ID);
+ }
+
if (*attrs & (1 << OVS_KEY_ATTR_PRIORITY)) {
SW_FLOW_KEY_PUT(match, phy.priority,
nla_get_u32(a[OVS_KEY_ATTR_PRIORITY]), is_mask);
@@ -836,7 +936,7 @@ int ovs_nla_get_match(struct sw_flow_match *match,
/**
* ovs_nla_get_flow_metadata - parses Netlink attributes into a flow key.
- * @flow: Receives extracted in_port, priority, tun_key and skb_mark.
+ * @key: Receives extracted in_port, priority, tun_key and skb_mark.
* @attr: Netlink attribute holding nested %OVS_KEY_ATTR_* Netlink attribute
* sequence.
*
@@ -846,32 +946,24 @@ int ovs_nla_get_match(struct sw_flow_match *match,
* extracted from the packet itself.
*/
-int ovs_nla_get_flow_metadata(struct sw_flow *flow,
- const struct nlattr *attr)
+int ovs_nla_get_flow_metadata(const struct nlattr *attr,
+ struct sw_flow_key *key)
{
- struct ovs_key_ipv4_tunnel *tun_key = &flow->key.tun_key;
const struct nlattr *a[OVS_KEY_ATTR_MAX + 1];
+ struct sw_flow_match match;
u64 attrs = 0;
int err;
- struct sw_flow_match match;
-
- flow->key.phy.in_port = DP_MAX_PORTS;
- flow->key.phy.priority = 0;
- flow->key.phy.skb_mark = 0;
- memset(tun_key, 0, sizeof(flow->key.tun_key));
err = parse_flow_nlattrs(attr, a, &attrs);
if (err)
return -EINVAL;
memset(&match, 0, sizeof(match));
- match.key = &flow->key;
+ match.key = key;
- err = metadata_from_nlattrs(&match, &attrs, a, false);
- if (err)
- return err;
+ key->phy.in_port = DP_MAX_PORTS;
- return 0;
+ return metadata_from_nlattrs(&match, &attrs, a, false);
}
int ovs_nla_put_flow(const struct sw_flow_key *swkey,
@@ -881,13 +973,26 @@ int ovs_nla_put_flow(const struct sw_flow_key *swkey,
struct nlattr *nla, *encap;
bool is_mask = (swkey != output);
- if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority))
+ if (nla_put_u32(skb, OVS_KEY_ATTR_RECIRC_ID, output->recirc_id))
+ goto nla_put_failure;
+
+ if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash))
goto nla_put_failure;
- if ((swkey->tun_key.ipv4_dst || is_mask) &&
- ipv4_tun_to_nlattr(skb, &swkey->tun_key, &output->tun_key))
+ if (nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, output->phy.priority))
goto nla_put_failure;
+ if ((swkey->tun_key.ipv4_dst || is_mask)) {
+ const struct geneve_opt *opts = NULL;
+
+ if (output->tun_key.tun_flags & TUNNEL_OPTIONS_PRESENT)
+ opts = GENEVE_OPTS(output, swkey->tun_opts_len);
+
+ if (ipv4_tun_to_nlattr(skb, &output->tun_key, opts,
+ swkey->tun_opts_len))
+ goto nla_put_failure;
+ }
+
if (swkey->phy.in_port == DP_MAX_PORTS) {
if (is_mask && (output->phy.in_port == 0xffff))
if (nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, 0xffffffff))
@@ -1127,13 +1232,14 @@ out:
return (struct nlattr *) ((unsigned char *)(*sfa) + next_offset);
}
-static int add_action(struct sw_flow_actions **sfa, int attrtype, void *data, int len)
+static struct nlattr *__add_action(struct sw_flow_actions **sfa,
+ int attrtype, void *data, int len)
{
struct nlattr *a;
a = reserve_sfa_size(sfa, nla_attr_size(len));
if (IS_ERR(a))
- return PTR_ERR(a);
+ return a;
a->nla_type = attrtype;
a->nla_len = nla_attr_size(len);
@@ -1142,6 +1248,18 @@ static int add_action(struct sw_flow_actions **sfa, int attrtype, void *data, in
memcpy(nla_data(a), data, len);
memset((unsigned char *) a + a->nla_len, 0, nla_padlen(len));
+ return a;
+}
+
+static int add_action(struct sw_flow_actions **sfa, int attrtype,
+ void *data, int len)
+{
+ struct nlattr *a;
+
+ a = __add_action(sfa, attrtype, data, len);
+ if (IS_ERR(a))
+ return PTR_ERR(a);
+
return 0;
}
@@ -1247,6 +1365,8 @@ static int validate_and_copy_set_tun(const struct nlattr *attr,
{
struct sw_flow_match match;
struct sw_flow_key key;
+ struct ovs_tunnel_info *tun_info;
+ struct nlattr *a;
int err, start;
ovs_match_init(&match, &key, NULL);
@@ -1254,12 +1374,56 @@ static int validate_and_copy_set_tun(const struct nlattr *attr,
if (err)
return err;
+ if (key.tun_opts_len) {
+ struct geneve_opt *option = GENEVE_OPTS(&key,
+ key.tun_opts_len);
+ int opts_len = key.tun_opts_len;
+ bool crit_opt = false;
+
+ while (opts_len > 0) {
+ int len;
+
+ if (opts_len < sizeof(*option))
+ return -EINVAL;
+
+ len = sizeof(*option) + option->length * 4;
+ if (len > opts_len)
+ return -EINVAL;
+
+ crit_opt |= !!(option->type & GENEVE_CRIT_OPT_TYPE);
+
+ option = (struct geneve_opt *)((u8 *)option + len);
+ opts_len -= len;
+ };
+
+ key.tun_key.tun_flags |= crit_opt ? TUNNEL_CRIT_OPT : 0;
+ };
+
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET);
if (start < 0)
return start;
- err = add_action(sfa, OVS_KEY_ATTR_IPV4_TUNNEL, &match.key->tun_key,
- sizeof(match.key->tun_key));
+ a = __add_action(sfa, OVS_KEY_ATTR_TUNNEL_INFO, NULL,
+ sizeof(*tun_info) + key.tun_opts_len);
+ if (IS_ERR(a))
+ return PTR_ERR(a);
+
+ tun_info = nla_data(a);
+ tun_info->tunnel = key.tun_key;
+ tun_info->options_len = key.tun_opts_len;
+
+ if (tun_info->options_len) {
+ /* We need to store the options in the action itself since
+ * everything else will go away after flow setup. We can append
+ * it to tun_info and then point there.
+ */
+ memcpy((tun_info + 1), GENEVE_OPTS(&key, key.tun_opts_len),
+ key.tun_opts_len);
+ tun_info->options = (struct geneve_opt *)(tun_info + 1);
+ } else {
+ tun_info->options = NULL;
+ }
+
add_nested_action_end(*sfa, start);
return err;
@@ -1409,11 +1573,13 @@ int ovs_nla_copy_actions(const struct nlattr *attr,
/* Expected argument lengths, (u32)-1 for variable length. */
static const u32 action_lens[OVS_ACTION_ATTR_MAX + 1] = {
[OVS_ACTION_ATTR_OUTPUT] = sizeof(u32),
+ [OVS_ACTION_ATTR_RECIRC] = sizeof(u32),
[OVS_ACTION_ATTR_USERSPACE] = (u32)-1,
[OVS_ACTION_ATTR_PUSH_VLAN] = sizeof(struct ovs_action_push_vlan),
[OVS_ACTION_ATTR_POP_VLAN] = 0,
[OVS_ACTION_ATTR_SET] = (u32)-1,
- [OVS_ACTION_ATTR_SAMPLE] = (u32)-1
+ [OVS_ACTION_ATTR_SAMPLE] = (u32)-1,
+ [OVS_ACTION_ATTR_HASH] = sizeof(struct ovs_action_hash)
};
const struct ovs_action_push_vlan *vlan;
int type = nla_type(a);
@@ -1440,6 +1606,18 @@ int ovs_nla_copy_actions(const struct nlattr *attr,
return -EINVAL;
break;
+ case OVS_ACTION_ATTR_HASH: {
+ const struct ovs_action_hash *act_hash = nla_data(a);
+
+ switch (act_hash->hash_alg) {
+ case OVS_HASH_ALG_L4:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ break;
+ }
case OVS_ACTION_ATTR_POP_VLAN:
break;
@@ -1452,6 +1630,9 @@ int ovs_nla_copy_actions(const struct nlattr *attr,
return -EINVAL;
break;
+ case OVS_ACTION_ATTR_RECIRC:
+ break;
+
case OVS_ACTION_ATTR_SET:
err = validate_set(a, key, sfa, &skip_copy);
if (err)
@@ -1525,17 +1706,22 @@ static int set_action_to_attr(const struct nlattr *a, struct sk_buff *skb)
int err;
switch (key_type) {
- case OVS_KEY_ATTR_IPV4_TUNNEL:
+ case OVS_KEY_ATTR_TUNNEL_INFO: {
+ struct ovs_tunnel_info *tun_info = nla_data(ovs_key);
+
start = nla_nest_start(skb, OVS_ACTION_ATTR_SET);
if (!start)
return -EMSGSIZE;
- err = ipv4_tun_to_nlattr(skb, nla_data(ovs_key),
- nla_data(ovs_key));
+ err = ipv4_tun_to_nlattr(skb, &tun_info->tunnel,
+ tun_info->options_len ?
+ tun_info->options : NULL,
+ tun_info->options_len);
if (err)
return err;
nla_nest_end(skb, start);
break;
+ }
default:
if (nla_put(skb, OVS_ACTION_ATTR_SET, nla_len(a), ovs_key))
return -EMSGSIZE;
diff --git a/net/openvswitch/flow_netlink.h b/net/openvswitch/flow_netlink.h
index 440151045d39..206e45add888 100644
--- a/net/openvswitch/flow_netlink.h
+++ b/net/openvswitch/flow_netlink.h
@@ -42,8 +42,8 @@ void ovs_match_init(struct sw_flow_match *match,
int ovs_nla_put_flow(const struct sw_flow_key *,
const struct sw_flow_key *, struct sk_buff *);
-int ovs_nla_get_flow_metadata(struct sw_flow *flow,
- const struct nlattr *attr);
+int ovs_nla_get_flow_metadata(const struct nlattr *, struct sw_flow_key *);
+
int ovs_nla_get_match(struct sw_flow_match *match,
const struct nlattr *,
const struct nlattr *);
diff --git a/net/openvswitch/vport-geneve.c b/net/openvswitch/vport-geneve.c
new file mode 100644
index 000000000000..910b3ef2c0d5
--- /dev/null
+++ b/net/openvswitch/vport-geneve.c
@@ -0,0 +1,235 @@
+/*
+ * Copyright (c) 2014 Nicira, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/version.h>
+
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/net.h>
+#include <linux/rculist.h>
+#include <linux/udp.h>
+#include <linux/if_vlan.h>
+
+#include <net/geneve.h>
+#include <net/icmp.h>
+#include <net/ip.h>
+#include <net/route.h>
+#include <net/udp.h>
+#include <net/xfrm.h>
+
+#include "datapath.h"
+#include "vport.h"
+
+/**
+ * struct geneve_port - Keeps track of open UDP ports
+ * @sock: The socket created for this port number.
+ * @name: vport name.
+ */
+struct geneve_port {
+ struct geneve_sock *gs;
+ char name[IFNAMSIZ];
+};
+
+static LIST_HEAD(geneve_ports);
+
+static inline struct geneve_port *geneve_vport(const struct vport *vport)
+{
+ return vport_priv(vport);
+}
+
+static inline struct genevehdr *geneve_hdr(const struct sk_buff *skb)
+{
+ return (struct genevehdr *)(udp_hdr(skb) + 1);
+}
+
+/* Convert 64 bit tunnel ID to 24 bit VNI. */
+static void tunnel_id_to_vni(__be64 tun_id, __u8 *vni)
+{
+#ifdef __BIG_ENDIAN
+ vni[0] = (__force __u8)(tun_id >> 16);
+ vni[1] = (__force __u8)(tun_id >> 8);
+ vni[2] = (__force __u8)tun_id;
+#else
+ vni[0] = (__force __u8)((__force u64)tun_id >> 40);
+ vni[1] = (__force __u8)((__force u64)tun_id >> 48);
+ vni[2] = (__force __u8)((__force u64)tun_id >> 56);
+#endif
+}
+
+/* Convert 24 bit VNI to 64 bit tunnel ID. */
+static __be64 vni_to_tunnel_id(__u8 *vni)
+{
+#ifdef __BIG_ENDIAN
+ return (vni[0] << 16) | (vni[1] << 8) | vni[2];
+#else
+ return (__force __be64)(((__force u64)vni[0] << 40) |
+ ((__force u64)vni[1] << 48) |
+ ((__force u64)vni[2] << 56));
+#endif
+}
+
+static void geneve_rcv(struct geneve_sock *gs, struct sk_buff *skb)
+{
+ struct vport *vport = gs->rcv_data;
+ struct genevehdr *geneveh = geneve_hdr(skb);
+ int opts_len;
+ struct ovs_tunnel_info tun_info;
+ __be64 key;
+ __be16 flags;
+
+ opts_len = geneveh->opt_len * 4;
+
+ flags = TUNNEL_KEY | TUNNEL_OPTIONS_PRESENT |
+ (udp_hdr(skb)->check != 0 ? TUNNEL_CSUM : 0) |
+ (geneveh->oam ? TUNNEL_OAM : 0) |
+ (geneveh->critical ? TUNNEL_CRIT_OPT : 0);
+
+ key = vni_to_tunnel_id(geneveh->vni);
+
+ ovs_flow_tun_info_init(&tun_info, ip_hdr(skb), key, flags,
+ geneveh->options, opts_len);
+
+ ovs_vport_receive(vport, skb, &tun_info);
+}
+
+static int geneve_get_options(const struct vport *vport,
+ struct sk_buff *skb)
+{
+ struct geneve_port *geneve_port = geneve_vport(vport);
+ struct inet_sock *sk = inet_sk(geneve_port->gs->sock->sk);
+
+ if (nla_put_u16(skb, OVS_TUNNEL_ATTR_DST_PORT, ntohs(sk->inet_sport)))
+ return -EMSGSIZE;
+ return 0;
+}
+
+static void geneve_tnl_destroy(struct vport *vport)
+{
+ struct geneve_port *geneve_port = geneve_vport(vport);
+
+ geneve_sock_release(geneve_port->gs);
+
+ ovs_vport_deferred_free(vport);
+}
+
+static struct vport *geneve_tnl_create(const struct vport_parms *parms)
+{
+ struct net *net = ovs_dp_get_net(parms->dp);
+ struct nlattr *options = parms->options;
+ struct geneve_port *geneve_port;
+ struct geneve_sock *gs;
+ struct vport *vport;
+ struct nlattr *a;
+ int err;
+ u16 dst_port;
+
+ 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 geneve_port),
+ &ovs_geneve_vport_ops, parms);
+ if (IS_ERR(vport))
+ return vport;
+
+ geneve_port = geneve_vport(vport);
+ strncpy(geneve_port->name, parms->name, IFNAMSIZ);
+
+ gs = geneve_sock_add(net, htons(dst_port), geneve_rcv, vport, true, 0);
+ if (IS_ERR(gs)) {
+ ovs_vport_free(vport);
+ return (void *)gs;
+ }
+ geneve_port->gs = gs;
+
+ return vport;
+error:
+ return ERR_PTR(err);
+}
+
+static int geneve_tnl_send(struct vport *vport, struct sk_buff *skb)
+{
+ struct ovs_key_ipv4_tunnel *tun_key;
+ struct ovs_tunnel_info *tun_info;
+ struct net *net = ovs_dp_get_net(vport->dp);
+ struct geneve_port *geneve_port = geneve_vport(vport);
+ __be16 dport = inet_sk(geneve_port->gs->sock->sk)->inet_sport;
+ __be16 sport;
+ struct rtable *rt;
+ struct flowi4 fl;
+ u8 vni[3];
+ __be16 df;
+ int err;
+
+ tun_info = OVS_CB(skb)->egress_tun_info;
+ if (unlikely(!tun_info)) {
+ err = -EINVAL;
+ goto error;
+ }
+
+ tun_key = &tun_info->tunnel;
+
+ /* Route lookup */
+ memset(&fl, 0, sizeof(fl));
+ fl.daddr = tun_key->ipv4_dst;
+ fl.saddr = tun_key->ipv4_src;
+ fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
+ fl.flowi4_mark = skb->mark;
+ fl.flowi4_proto = IPPROTO_UDP;
+
+ rt = ip_route_output_key(net, &fl);
+ if (IS_ERR(rt)) {
+ err = PTR_ERR(rt);
+ goto error;
+ }
+
+ df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ? htons(IP_DF) : 0;
+ sport = udp_flow_src_port(net, skb, 1, USHRT_MAX, true);
+ tunnel_id_to_vni(tun_key->tun_id, vni);
+ skb->ignore_df = 1;
+
+ err = geneve_xmit_skb(geneve_port->gs, rt, skb, fl.saddr,
+ tun_key->ipv4_dst, tun_key->ipv4_tos,
+ tun_key->ipv4_ttl, df, sport, dport,
+ tun_key->tun_flags, vni,
+ tun_info->options_len, (u8 *)tun_info->options,
+ false);
+ if (err < 0)
+ ip_rt_put(rt);
+error:
+ return err;
+}
+
+static const char *geneve_get_name(const struct vport *vport)
+{
+ struct geneve_port *geneve_port = geneve_vport(vport);
+
+ return geneve_port->name;
+}
+
+const struct vport_ops ovs_geneve_vport_ops = {
+ .type = OVS_VPORT_TYPE_GENEVE,
+ .create = geneve_tnl_create,
+ .destroy = geneve_tnl_destroy,
+ .get_name = geneve_get_name,
+ .get_options = geneve_get_options,
+ .send = geneve_tnl_send,
+};
diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
index f49148a07da2..108b82da2fd9 100644
--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2013 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, 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
@@ -63,8 +63,10 @@ static __be16 filter_tnl_flags(__be16 flags)
static struct sk_buff *__build_header(struct sk_buff *skb,
int tunnel_hlen)
{
- const struct ovs_key_ipv4_tunnel *tun_key = OVS_CB(skb)->tun_key;
struct tnl_ptk_info tpi;
+ const struct ovs_key_ipv4_tunnel *tun_key;
+
+ tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
skb = gre_handle_offloads(skb, !!(tun_key->tun_flags & TUNNEL_CSUM));
if (IS_ERR(skb))
@@ -92,7 +94,7 @@ static __be64 key_to_tunnel_id(__be32 key, __be32 seq)
static int gre_rcv(struct sk_buff *skb,
const struct tnl_ptk_info *tpi)
{
- struct ovs_key_ipv4_tunnel tun_key;
+ struct ovs_tunnel_info tun_info;
struct ovs_net *ovs_net;
struct vport *vport;
__be64 key;
@@ -103,10 +105,10 @@ static int gre_rcv(struct sk_buff *skb,
return PACKET_REJECT;
key = key_to_tunnel_id(tpi->key, tpi->seq);
- ovs_flow_tun_key_init(&tun_key, ip_hdr(skb), key,
- filter_tnl_flags(tpi->flags));
+ ovs_flow_tun_info_init(&tun_info, ip_hdr(skb), key,
+ filter_tnl_flags(tpi->flags), NULL, 0);
- ovs_vport_receive(vport, skb, &tun_key);
+ ovs_vport_receive(vport, skb, &tun_info);
return PACKET_RCVD;
}
@@ -129,6 +131,7 @@ static int gre_err(struct sk_buff *skb, u32 info,
static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct net *net = ovs_dp_get_net(vport->dp);
+ struct ovs_key_ipv4_tunnel *tun_key;
struct flowi4 fl;
struct rtable *rt;
int min_headroom;
@@ -136,16 +139,17 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
__be16 df;
int err;
- if (unlikely(!OVS_CB(skb)->tun_key)) {
+ if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
err = -EINVAL;
goto error;
}
+ tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
/* Route lookup */
memset(&fl, 0, sizeof(fl));
- fl.daddr = OVS_CB(skb)->tun_key->ipv4_dst;
- fl.saddr = OVS_CB(skb)->tun_key->ipv4_src;
- fl.flowi4_tos = RT_TOS(OVS_CB(skb)->tun_key->ipv4_tos);
+ fl.daddr = tun_key->ipv4_dst;
+ fl.saddr = tun_key->ipv4_src;
+ fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
fl.flowi4_mark = skb->mark;
fl.flowi4_proto = IPPROTO_GRE;
@@ -153,7 +157,7 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
if (IS_ERR(rt))
return PTR_ERR(rt);
- tunnel_hlen = ip_gre_calc_hlen(OVS_CB(skb)->tun_key->tun_flags);
+ tunnel_hlen = ip_gre_calc_hlen(tun_key->tun_flags);
min_headroom = LL_RESERVED_SPACE(rt->dst.dev) + rt->dst.header_len
+ tunnel_hlen + sizeof(struct iphdr)
@@ -185,15 +189,14 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
goto err_free_rt;
}
- df = OVS_CB(skb)->tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
+ df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
htons(IP_DF) : 0;
skb->ignore_df = 1;
return iptunnel_xmit(skb->sk, rt, skb, fl.saddr,
- OVS_CB(skb)->tun_key->ipv4_dst, IPPROTO_GRE,
- OVS_CB(skb)->tun_key->ipv4_tos,
- OVS_CB(skb)->tun_key->ipv4_ttl, df, false);
+ tun_key->ipv4_dst, IPPROTO_GRE,
+ tun_key->ipv4_tos, tun_key->ipv4_ttl, df, false);
err_free_rt:
ip_rt_put(rt);
error:
diff --git a/net/openvswitch/vport-vxlan.c b/net/openvswitch/vport-vxlan.c
index d8b7e247bebf..2735e01dca73 100644
--- a/net/openvswitch/vport-vxlan.c
+++ b/net/openvswitch/vport-vxlan.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013 Nicira, Inc.
+ * Copyright (c) 2014 Nicira, Inc.
* Copyright (c) 2013 Cisco Systems, Inc.
*
* This program is free software; you can redistribute it and/or
@@ -58,7 +58,7 @@ static inline struct vxlan_port *vxlan_vport(const struct vport *vport)
/* Called with rcu_read_lock and BH disabled. */
static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb, __be32 vx_vni)
{
- struct ovs_key_ipv4_tunnel tun_key;
+ struct ovs_tunnel_info tun_info;
struct vport *vport = vs->data;
struct iphdr *iph;
__be64 key;
@@ -66,9 +66,9 @@ static void vxlan_rcv(struct vxlan_sock *vs, struct sk_buff *skb, __be32 vx_vni)
/* Save outer tunnel values */
iph = ip_hdr(skb);
key = cpu_to_be64(ntohl(vx_vni) >> 8);
- ovs_flow_tun_key_init(&tun_key, iph, key, TUNNEL_KEY);
+ ovs_flow_tun_info_init(&tun_info, iph, key, TUNNEL_KEY, NULL, 0);
- ovs_vport_receive(vport, skb, &tun_key);
+ ovs_vport_receive(vport, skb, &tun_info);
}
static int vxlan_get_options(const struct vport *vport, struct sk_buff *skb)
@@ -140,22 +140,24 @@ 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);
__be16 dst_port = inet_sk(vxlan_port->vs->sock->sk)->inet_sport;
+ struct ovs_key_ipv4_tunnel *tun_key;
struct rtable *rt;
struct flowi4 fl;
__be16 src_port;
__be16 df;
int err;
- if (unlikely(!OVS_CB(skb)->tun_key)) {
+ if (unlikely(!OVS_CB(skb)->egress_tun_info)) {
err = -EINVAL;
goto error;
}
+ tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
/* Route lookup */
memset(&fl, 0, sizeof(fl));
- fl.daddr = OVS_CB(skb)->tun_key->ipv4_dst;
- fl.saddr = OVS_CB(skb)->tun_key->ipv4_src;
- fl.flowi4_tos = RT_TOS(OVS_CB(skb)->tun_key->ipv4_tos);
+ fl.daddr = tun_key->ipv4_dst;
+ fl.saddr = tun_key->ipv4_src;
+ fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
fl.flowi4_mark = skb->mark;
fl.flowi4_proto = IPPROTO_UDP;
@@ -165,7 +167,7 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
goto error;
}
- df = OVS_CB(skb)->tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
+ df = tun_key->tun_flags & TUNNEL_DONT_FRAGMENT ?
htons(IP_DF) : 0;
skb->ignore_df = 1;
@@ -173,11 +175,10 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
src_port = udp_flow_src_port(net, skb, 0, 0, true);
err = vxlan_xmit_skb(vxlan_port->vs, rt, skb,
- fl.saddr, OVS_CB(skb)->tun_key->ipv4_dst,
- OVS_CB(skb)->tun_key->ipv4_tos,
- OVS_CB(skb)->tun_key->ipv4_ttl, df,
+ fl.saddr, tun_key->ipv4_dst,
+ tun_key->ipv4_tos, tun_key->ipv4_ttl, df,
src_port, dst_port,
- htonl(be64_to_cpu(OVS_CB(skb)->tun_key->tun_id) << 8),
+ htonl(be64_to_cpu(tun_key->tun_id) << 8),
false);
if (err < 0)
ip_rt_put(rt);
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 6d8f2ec481d9..53001b020ca7 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2007-2012 Nicira, Inc.
+ * Copyright (c) 2007-2014 Nicira, 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
@@ -48,6 +48,9 @@ static const struct vport_ops *vport_ops_list[] = {
#ifdef CONFIG_OPENVSWITCH_VXLAN
&ovs_vxlan_vport_ops,
#endif
+#ifdef CONFIG_OPENVSWITCH_GENEVE
+ &ovs_geneve_vport_ops,
+#endif
};
/* Protected by RCU read lock for reading, ovs_mutex for writing. */
@@ -148,8 +151,6 @@ struct vport *ovs_vport_alloc(int priv_size, const struct vport_ops *ops,
return ERR_PTR(-ENOMEM);
}
- spin_lock_init(&vport->stats_lock);
-
return vport;
}
@@ -268,14 +269,10 @@ void ovs_vport_get_stats(struct vport *vport, struct ovs_vport_stats *stats)
* netdev-stats can be directly read over netlink-ioctl.
*/
- spin_lock_bh(&vport->stats_lock);
-
- stats->rx_errors = vport->err_stats.rx_errors;
- stats->tx_errors = vport->err_stats.tx_errors;
- stats->tx_dropped = vport->err_stats.tx_dropped;
- stats->rx_dropped = vport->err_stats.rx_dropped;
-
- spin_unlock_bh(&vport->stats_lock);
+ stats->rx_errors = atomic_long_read(&vport->err_stats.rx_errors);
+ stats->tx_errors = atomic_long_read(&vport->err_stats.tx_errors);
+ stats->tx_dropped = atomic_long_read(&vport->err_stats.tx_dropped);
+ stats->rx_dropped = atomic_long_read(&vport->err_stats.rx_dropped);
for_each_possible_cpu(i) {
const struct pcpu_sw_netstats *percpu_stats;
@@ -438,9 +435,11 @@ u32 ovs_vport_find_upcall_portid(const struct vport *p, struct sk_buff *skb)
* skb->data should point to the Ethernet header.
*/
void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
- struct ovs_key_ipv4_tunnel *tun_key)
+ struct ovs_tunnel_info *tun_info)
{
struct pcpu_sw_netstats *stats;
+ struct sw_flow_key key;
+ int error;
stats = this_cpu_ptr(vport->percpu_stats);
u64_stats_update_begin(&stats->syncp);
@@ -448,8 +447,15 @@ void ovs_vport_receive(struct vport *vport, struct sk_buff *skb,
stats->rx_bytes += skb->len;
u64_stats_update_end(&stats->syncp);
- OVS_CB(skb)->tun_key = tun_key;
- ovs_dp_process_received_packet(vport, skb);
+ OVS_CB(skb)->input_vport = vport;
+ OVS_CB(skb)->egress_tun_info = NULL;
+ /* Extract flow from 'skb' into 'key'. */
+ error = ovs_flow_key_extract(tun_info, skb, &key);
+ if (unlikely(error)) {
+ kfree_skb(skb);
+ return;
+ }
+ ovs_dp_process_packet(skb, &key);
}
/**
@@ -495,27 +501,24 @@ int ovs_vport_send(struct vport *vport, struct sk_buff *skb)
static void ovs_vport_record_error(struct vport *vport,
enum vport_err_type err_type)
{
- spin_lock(&vport->stats_lock);
-
switch (err_type) {
case VPORT_E_RX_DROPPED:
- vport->err_stats.rx_dropped++;
+ atomic_long_inc(&vport->err_stats.rx_dropped);
break;
case VPORT_E_RX_ERROR:
- vport->err_stats.rx_errors++;
+ atomic_long_inc(&vport->err_stats.rx_errors);
break;
case VPORT_E_TX_DROPPED:
- vport->err_stats.tx_dropped++;
+ atomic_long_inc(&vport->err_stats.tx_dropped);
break;
case VPORT_E_TX_ERROR:
- vport->err_stats.tx_errors++;
+ atomic_long_inc(&vport->err_stats.tx_errors);
break;
}
- spin_unlock(&vport->stats_lock);
}
static void free_vport_rcu(struct rcu_head *rcu)
diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h
index 35f89d84b45e..8942125de3a6 100644
--- a/net/openvswitch/vport.h
+++ b/net/openvswitch/vport.h
@@ -35,7 +35,6 @@ struct vport_parms;
/* The following definitions are for users of the vport subsytem: */
-/* The following definitions are for users of the vport subsytem: */
struct vport_net {
struct vport __rcu *gre_vport;
};
@@ -62,10 +61,10 @@ int ovs_vport_send(struct vport *, struct sk_buff *);
/* The following definitions are for implementers of vport devices: */
struct vport_err_stats {
- u64 rx_dropped;
- u64 rx_errors;
- u64 tx_dropped;
- u64 tx_errors;
+ atomic_long_t rx_dropped;
+ atomic_long_t rx_errors;
+ atomic_long_t tx_dropped;
+ atomic_long_t tx_errors;
};
/**
* struct vport_portids - array of netlink portids of a vport.
@@ -93,7 +92,6 @@ struct vport_portids {
* @dp_hash_node: Element in @datapath->ports hash table in datapath.c.
* @ops: Class structure.
* @percpu_stats: Points to per-CPU statistics used and maintained by vport
- * @stats_lock: Protects @err_stats;
* @err_stats: Points to error statistics used and maintained by vport
*/
struct vport {
@@ -108,7 +106,6 @@ struct vport {
struct pcpu_sw_netstats __percpu *percpu_stats;
- spinlock_t stats_lock;
struct vport_err_stats err_stats;
};
@@ -210,7 +207,7 @@ static inline struct vport *vport_from_priv(void *priv)
}
void ovs_vport_receive(struct vport *, struct sk_buff *,
- struct ovs_key_ipv4_tunnel *);
+ struct ovs_tunnel_info *);
/* List of statically compiled vport implementations. Don't forget to also
* add yours to the list at the top of vport.c. */
@@ -218,6 +215,7 @@ extern const struct vport_ops ovs_netdev_vport_ops;
extern const struct vport_ops ovs_internal_vport_ops;
extern const struct vport_ops ovs_gre_vport_ops;
extern const struct vport_ops ovs_vxlan_vport_ops;
+extern const struct vport_ops ovs_geneve_vport_ops;
static inline void ovs_skb_postpush_rcsum(struct sk_buff *skb,
const void *start, unsigned int len)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-14 16:22:50 +0300