openvswitch: Per cpu flow stats.

[cascardo/linux.git] / net / openvswitch / flow_netlink.c

diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index 2bc1bc1..3ccb92f 100644 (file)
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@@ -266,6 +266,20 @@ static bool is_all_zero(const u8 *fp, size_t size)
        return true;
 }
 
+static bool is_all_set(const u8 *fp, size_t size)
+{
+       int i;
+
+       if (!fp)
+               return false;
+
+       for (i = 0; i < size; i++)
+               if (fp[i] != 0xff)
+                       return false;
+
+       return true;
+}
+
 static int __parse_flow_nlattrs(const struct nlattr *attr,
                                const struct nlattr *a[],
                                u64 *attrsp, bool nz)
@@ -487,8 +501,9 @@ static int metadata_from_nlattrs(struct sw_flow_match *match,  u64 *attrs,
        return 0;
 }
 
-static int ovs_key_from_nlattrs(struct sw_flow_match *match,  u64 attrs,
-                               const struct nlattr **a, bool is_mask)
+static int ovs_key_from_nlattrs(struct sw_flow_match *match,  bool *exact_5tuple,
+                               u64 attrs, const struct nlattr **a,
+                               bool is_mask)
 {
        int err;
        u64 orig_attrs = attrs;
@@ -545,6 +560,11 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match,  u64 attrs,
                SW_FLOW_KEY_PUT(match, eth.type, htons(ETH_P_802_2), is_mask);
        }
 
+       if (is_mask && exact_5tuple) {
+               if (match->mask->key.eth.type != htons(0xffff))
+                       *exact_5tuple = false;
+       }
+
        if (attrs & (1 << OVS_KEY_ATTR_IPV4)) {
                const struct ovs_key_ipv4 *ipv4_key;
 
@@ -567,6 +587,13 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match,  u64 attrs,
                SW_FLOW_KEY_PUT(match, ipv4.addr.dst,
                                ipv4_key->ipv4_dst, is_mask);
                attrs &= ~(1 << OVS_KEY_ATTR_IPV4);
+
+               if (is_mask && exact_5tuple && *exact_5tuple) {
+                       if (ipv4_key->ipv4_proto != 0xff ||
+                           ipv4_key->ipv4_src != htonl(0xffffffff) ||
+                           ipv4_key->ipv4_dst != htonl(0xffffffff))
+                               *exact_5tuple = false;
+               }
        }
 
        if (attrs & (1 << OVS_KEY_ATTR_IPV6)) {
@@ -598,6 +625,13 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match,  u64 attrs,
                                is_mask);
 
                attrs &= ~(1 << OVS_KEY_ATTR_IPV6);
+
+               if (is_mask && exact_5tuple && *exact_5tuple) {
+                       if (ipv6_key->ipv6_proto != 0xff ||
+                           !is_all_set((u8 *)ipv6_key->ipv6_src, sizeof(match->key->ipv6.addr.src)) ||
+                           !is_all_set((u8 *)ipv6_key->ipv6_dst, sizeof(match->key->ipv6.addr.dst)))
+                               *exact_5tuple = false;
+               }
        }
 
        if (attrs & (1 << OVS_KEY_ATTR_ARP)) {
@@ -640,6 +674,11 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match,  u64 attrs,
                                        tcp_key->tcp_dst, is_mask);
                }
                attrs &= ~(1 << OVS_KEY_ATTR_TCP);
+
+               if (is_mask && exact_5tuple && *exact_5tuple &&
+                   (tcp_key->tcp_src != htons(0xffff) ||
+                    tcp_key->tcp_dst != htons(0xffff)))
+                       *exact_5tuple = false;
        }
 
        if (attrs & (1 << OVS_KEY_ATTR_TCP_FLAGS)) {
@@ -671,6 +710,11 @@ static int ovs_key_from_nlattrs(struct sw_flow_match *match,  u64 attrs,
                                        udp_key->udp_dst, is_mask);
                }
                attrs &= ~(1 << OVS_KEY_ATTR_UDP);
+
+               if (is_mask && exact_5tuple && *exact_5tuple &&
+                   (udp_key->udp_src != htons(0xffff) ||
+                    udp_key->udp_dst != htons(0xffff)))
+                       *exact_5tuple = false;
        }
 
        if (attrs & (1 << OVS_KEY_ATTR_SCTP)) {
@@ -756,6 +800,7 @@ static void sw_flow_mask_set(struct sw_flow_mask *mask,
  * attribute specifies the mask field of the wildcarded flow.
  */
 int ovs_nla_get_match(struct sw_flow_match *match,
+                     bool *exact_5tuple,
                      const struct nlattr *key,
                      const struct nlattr *mask)
 {
@@ -803,10 +848,13 @@ int ovs_nla_get_match(struct sw_flow_match *match,
                }
        }
 
-       err = ovs_key_from_nlattrs(match, key_attrs, a, false);
+       err = ovs_key_from_nlattrs(match, NULL, key_attrs, a, false);
        if (err)
                return err;
 
+       if (exact_5tuple)
+               *exact_5tuple = true;
+
        if (mask) {
                err = parse_flow_mask_nlattrs(mask, a, &mask_attrs);
                if (err)
@@ -844,7 +892,7 @@ int ovs_nla_get_match(struct sw_flow_match *match,
                        }
                }
 
-               err = ovs_key_from_nlattrs(match, mask_attrs, a, true);
+               err = ovs_key_from_nlattrs(match, exact_5tuple, mask_attrs, a, true);
                if (err)
                        return err;
        } else {