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Diffstat (limited to 'net/openvswitch/datapath.c')
-rw-r--r--net/openvswitch/datapath.c116
1 files changed, 74 insertions, 42 deletions
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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 09:27:16 +0100