net: flow_offload: add support for ARP frame matching

This adds a new flow_rule_match_arp function that allows drivers
to be able to dissect ARP frames.

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/flow_offload.h b/include/net/flow_offload.h
index 7a60bc6..0400a0a 100644 (file)
--- a/include/net/flow_offload.h
+++ b/include/net/flow_offload.h
@@ -32,6 +32,10 @@ struct flow_match_vlan {
        struct flow_dissector_key_vlan *key, *mask;
 };
 
+struct flow_match_arp {
+       struct flow_dissector_key_arp *key, *mask;
+};
+
 struct flow_match_ipv4_addrs {
        struct flow_dissector_key_ipv4_addrs *key, *mask;
 };
@@ -98,6 +102,8 @@ void flow_rule_match_vlan(const struct flow_rule *rule,
                          struct flow_match_vlan *out);
 void flow_rule_match_cvlan(const struct flow_rule *rule,
                           struct flow_match_vlan *out);
+void flow_rule_match_arp(const struct flow_rule *rule,
+                        struct flow_match_arp *out);
 void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
                                struct flow_match_ipv4_addrs *out);
 void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,

diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
index abe423f..acfc1f8 100644 (file)
--- a/net/core/flow_offload.c
+++ b/net/core/flow_offload.c
@@ -97,6 +97,13 @@ void flow_rule_match_cvlan(const struct flow_rule *rule,
 }
 EXPORT_SYMBOL(flow_rule_match_cvlan);
 
+void flow_rule_match_arp(const struct flow_rule *rule,
+                        struct flow_match_arp *out)
+{
+       FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ARP, out);
+}
+EXPORT_SYMBOL(flow_rule_match_arp);
+
 void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
                                struct flow_match_ipv4_addrs *out)
 {