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Commit 9f249089 authored by Tom Herbert's avatar Tom Herbert Committed by David S. Miller
Browse files

net: Add keys for TIPC address 



Add a new flow key for TIPC addresses.

Signed-off-by: default avatarTom Herbert <tom@herbertland.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c3f83241

include/net/flow_dissector.h

+10 −0
Original line number Diff line number Diff line
@@ -49,6 +49,14 @@ struct flow_dissector_key_ipv6_addrs { 
	struct in6_addr dst;

};



/**

 * struct flow_dissector_key_tipc_addrs:

 * @srcnode: source node address

 */

struct flow_dissector_key_tipc_addrs {

	__be32 srcnode;

};



/**

 * struct flow_dissector_key_addrs:

 * @v4addrs: IPv4 addresses
@@ -58,6 +66,7 @@ struct flow_dissector_key_addrs { 
	union {

		struct flow_dissector_key_ipv4_addrs v4addrs;

		struct flow_dissector_key_ipv6_addrs v6addrs;

		struct flow_dissector_key_tipc_addrs tipcaddrs;

	};

};
@@ -97,6 +106,7 @@ enum flow_dissector_key_id { 
	FLOW_DISSECTOR_KEY_IPV6_HASH_ADDRS, /* struct flow_dissector_key_addrs */

	FLOW_DISSECTOR_KEY_PORTS, /* struct flow_dissector_key_ports */

	FLOW_DISSECTOR_KEY_ETH_ADDRS, /* struct flow_dissector_key_eth_addrs */

	FLOW_DISSECTOR_KEY_TIPC_ADDRS, /* struct flow_dissector_key_tipc_addrs */



	FLOW_DISSECTOR_KEY_MAX,

};

net/core/flow_dissector.c

+13 −5
Original line number Diff line number Diff line
@@ -294,13 +294,12 @@ bool __skb_flow_dissect(const struct sk_buff *skb, 
		key_control->thoff = (u16)nhoff;



		if (skb_flow_dissector_uses_key(flow_dissector,

						FLOW_DISSECTOR_KEY_IPV6_HASH_ADDRS)) {

						FLOW_DISSECTOR_KEY_TIPC_ADDRS)) {

			key_addrs = skb_flow_dissector_target(flow_dissector,

							      FLOW_DISSECTOR_KEY_IPV6_HASH_ADDRS,

							      FLOW_DISSECTOR_KEY_TIPC_ADDRS,

							      target_container);

			key_addrs->v4addrs.src = hdr->srcnode;

			key_addrs->v4addrs.dst = 0;

			key_control->addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;

			key_addrs->tipcaddrs.srcnode = hdr->srcnode;

			key_control->addr_type = FLOW_DISSECTOR_KEY_TIPC_ADDRS;

		}

		return true;

	}
@@ -408,6 +407,9 @@ static inline size_t flow_keys_hash_length(struct flow_keys *flow) 
	case FLOW_DISSECTOR_KEY_IPV6_ADDRS:

		diff -= sizeof(flow->addrs.v6addrs);

		break;

	case FLOW_DISSECTOR_KEY_TIPC_ADDRS:

		diff -= sizeof(flow->addrs.tipcaddrs);

		break;

	}

	return (sizeof(*flow) - diff) / sizeof(u32);

}
@@ -420,6 +422,8 @@ __be32 flow_get_u32_src(const struct flow_keys *flow) 
	case FLOW_DISSECTOR_KEY_IPV6_ADDRS:

		return (__force __be32)ipv6_addr_hash(

			&flow->addrs.v6addrs.src);

	case FLOW_DISSECTOR_KEY_TIPC_ADDRS:

		return flow->addrs.tipcaddrs.srcnode;

	default:

		return 0;

	}
@@ -650,6 +654,10 @@ static const struct flow_dissector_key flow_keys_dissector_keys[] = { 
		.key_id = FLOW_DISSECTOR_KEY_IPV6_HASH_ADDRS,

		.offset = offsetof(struct flow_keys, addrs.v4addrs),

	},

	{

		.key_id = FLOW_DISSECTOR_KEY_TIPC_ADDRS,

		.offset = offsetof(struct flow_keys, addrs.tipcaddrs),

	},

	{

		.key_id = FLOW_DISSECTOR_KEY_PORTS,

		.offset = offsetof(struct flow_keys, ports),