openvswitch: Increase maximum number of datapath ports.

Use hash table to store ports of datapath. Allow 64K ports per switch.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>

1 files changed, 4 insertions, 7 deletions

diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index b7f38b161909..f9f211d95ebe 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -203,10 +203,7 @@ struct sw_flow_actions *ovs_flow_actions_alloc(const struct nlattr *actions)
         int actions_len = nla_len(actions);
         struct sw_flow_actions *sfa;
 
-        /* At least DP_MAX_PORTS actions are required to be able to flood a
-         * packet to every port.  Factor of 2 allows for setting VLAN tags,
-         * etc. */
-        if (actions_len > 2 * DP_MAX_PORTS * nla_total_size(4))
+        if (actions_len > MAX_ACTIONS_BUFSIZE)
                 return ERR_PTR(-EINVAL);
 
         sfa = kmalloc(sizeof(*sfa) + actions_len, GFP_KERNEL);
@@ -1000,7 +997,7 @@ int ovs_flow_from_nlattrs(struct sw_flow_key *swkey, int *key_lenp,
                 swkey->phy.in_port = in_port;
                 attrs &= ~(1 << OVS_KEY_ATTR_IN_PORT);
         } else {
-                swkey->phy.in_port = USHRT_MAX;
+                swkey->phy.in_port = DP_MAX_PORTS;
         }
 
         /* Data attributes. */
@@ -1143,7 +1140,7 @@ int ovs_flow_metadata_from_nlattrs(u32 *priority, u16 *in_port,
         const struct nlattr *nla;
         int rem;
 
-        *in_port = USHRT_MAX;
+        *in_port = DP_MAX_PORTS;
         *priority = 0;
 
         nla_for_each_nested(nla, attr, rem) {
@@ -1180,7 +1177,7 @@ int ovs_flow_to_nlattrs(const struct sw_flow_key *swkey, struct sk_buff *skb)
             nla_put_u32(skb, OVS_KEY_ATTR_PRIORITY, swkey->phy.priority))
                 goto nla_put_failure;
 
-        if (swkey->phy.in_port != USHRT_MAX &&
+        if (swkey->phy.in_port != DP_MAX_PORTS &&
             nla_put_u32(skb, OVS_KEY_ATTR_IN_PORT, swkey->phy.in_port))
                 goto nla_put_failure;