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authorPravin B Shelar <pshelar@nicira.com>2014-11-06 06:57:27 -0800
committerPravin B Shelar <pshelar@nicira.com>2014-11-09 18:58:44 -0800
commite8eedb85bd238613332570ac6ae683fee94fbe36 (patch)
treea97a48cc34a9a1c911925af035011dec5ca654f3 /net/openvswitch/datapath.c
parentfff06c36a2563214073707f6e6aea152713274d1 (diff)
openvswitch: Remove redundant key ref from upcall_info.
struct dp_upcall_info has pointer to pkt_key which is already available in OVS_CB. This also simplifies upcall handling for gso packet. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Acked-by: Andy Zhou <azhou@nicira.com>
Diffstat (limited to 'net/openvswitch/datapath.c')
-rw-r--r--net/openvswitch/datapath.c45
1 files changed, 26 insertions, 19 deletions
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index c2ac340e19fb..7146b38a954e 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -136,8 +136,10 @@ EXPORT_SYMBOL_GPL(lockdep_ovsl_is_held);
static struct vport *new_vport(const struct vport_parms *);
static int queue_gso_packets(struct datapath *dp, struct sk_buff *,
+ const struct sw_flow_key *,
const struct dp_upcall_info *);
static int queue_userspace_packet(struct datapath *dp, struct sk_buff *,
+ const struct sw_flow_key *,
const struct dp_upcall_info *);
/* Must be called with rcu_read_lock. */
@@ -271,11 +273,10 @@ void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key)
int error;
upcall.cmd = OVS_PACKET_CMD_MISS;
- upcall.key = key;
upcall.userdata = NULL;
upcall.portid = ovs_vport_find_upcall_portid(p, skb);
upcall.egress_tun_info = NULL;
- error = ovs_dp_upcall(dp, skb, &upcall);
+ error = ovs_dp_upcall(dp, skb, key, &upcall);
if (unlikely(error))
kfree_skb(skb);
else
@@ -299,6 +300,7 @@ out:
}
int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb,
+ const struct sw_flow_key *key,
const struct dp_upcall_info *upcall_info)
{
struct dp_stats_percpu *stats;
@@ -310,9 +312,9 @@ int ovs_dp_upcall(struct datapath *dp, struct sk_buff *skb,
}
if (!skb_is_gso(skb))
- err = queue_userspace_packet(dp, skb, upcall_info);
+ err = queue_userspace_packet(dp, skb, key, upcall_info);
else
- err = queue_gso_packets(dp, skb, upcall_info);
+ err = queue_gso_packets(dp, skb, key, upcall_info);
if (err)
goto err;
@@ -329,39 +331,43 @@ err:
}
static int queue_gso_packets(struct datapath *dp, struct sk_buff *skb,
+ const struct sw_flow_key *key,
const struct dp_upcall_info *upcall_info)
{
unsigned short gso_type = skb_shinfo(skb)->gso_type;
- struct dp_upcall_info later_info;
struct sw_flow_key later_key;
struct sk_buff *segs, *nskb;
+ struct ovs_skb_cb ovs_cb;
int err;
+ ovs_cb = *OVS_CB(skb);
segs = __skb_gso_segment(skb, NETIF_F_SG, false);
+ *OVS_CB(skb) = ovs_cb;
if (IS_ERR(segs))
return PTR_ERR(segs);
if (segs == NULL)
return -EINVAL;
+ if (gso_type & SKB_GSO_UDP) {
+ /* The initial flow key extracted by ovs_flow_key_extract()
+ * in this case is for a first fragment, so we need to
+ * properly mark later fragments.
+ */
+ later_key = *key;
+ later_key.ip.frag = OVS_FRAG_TYPE_LATER;
+ }
+
/* Queue all of the segments. */
skb = segs;
do {
- err = queue_userspace_packet(dp, skb, upcall_info);
+ *OVS_CB(skb) = ovs_cb;
+ if (gso_type & SKB_GSO_UDP && skb != segs)
+ key = &later_key;
+
+ err = queue_userspace_packet(dp, skb, key, upcall_info);
if (err)
break;
- if (skb == segs && gso_type & SKB_GSO_UDP) {
- /* The initial flow key extracted by ovs_flow_extract()
- * in this case is for a first fragment, so we need to
- * properly mark later fragments.
- */
- later_key = *upcall_info->key;
- later_key.ip.frag = OVS_FRAG_TYPE_LATER;
-
- later_info = *upcall_info;
- later_info.key = &later_key;
- upcall_info = &later_info;
- }
} while ((skb = skb->next));
/* Free all of the segments. */
@@ -395,6 +401,7 @@ static size_t upcall_msg_size(const struct dp_upcall_info *upcall_info,
}
static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
+ const struct sw_flow_key *key,
const struct dp_upcall_info *upcall_info)
{
struct ovs_header *upcall;
@@ -457,7 +464,7 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
upcall->dp_ifindex = dp_ifindex;
nla = nla_nest_start(user_skb, OVS_PACKET_ATTR_KEY);
- err = ovs_nla_put_flow(upcall_info->key, upcall_info->key, user_skb);
+ err = ovs_nla_put_flow(key, key, user_skb);
BUG_ON(err);
nla_nest_end(user_skb, nla);