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mctp: Allow keys matching any local address 

Currently, we require an exact match on an incoming packet's dest
address, and the key's local_addr field.

In a future change, we may want to set up a key before packets are
routed, meaning we have no local address to match on.

This change allows key lookups to match on local_addr = MCTP_ADDR_ANY.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jeremy Kerr 2022-02-09 12:05:56 +08:00 committed by David S. Miller
parent 8069b22d65
commit 0de55a7d11
2 changed files with 10 additions and 2 deletions
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4
net/mctp/route.c
View File

@ -76,7 +76,7 @@ static struct mctp_sock *mctp_lookup_bind(struct net *net, struct sk_buff *skb)
static bool mctp_key_match(struct mctp_sk_key *key, mctp_eid_t local, static bool mctp_key_match(struct mctp_sk_key *key, mctp_eid_t local,
mctp_eid_t peer, u8 tag) mctp_eid_t peer, u8 tag)
{ {
if (key->local_addr != local) if (!mctp_address_matches(key->local_addr, local))
return false; return false;
if (key->peer_addr != peer) if (key->peer_addr != peer)
@ -616,7 +616,7 @@ static struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk,
continue; continue;
if (!(mctp_address_matches(tmp->peer_addr, daddr) && if (!(mctp_address_matches(tmp->peer_addr, daddr) &&
tmp->local_addr == saddr)) mctp_address_matches(tmp->local_addr, saddr)))
continue; continue;
spin_lock(&tmp->lock); spin_lock(&tmp->lock);

8
net/mctp/test/route-test.c
View File

@ -645,6 +645,14 @@ static const struct mctp_route_input_sk_keys_test mctp_route_input_sk_keys_tests
.hdr = RX_HDR(1, 11, 8, FL_S | FL_E | FL_T(1)), .hdr = RX_HDR(1, 11, 8, FL_S | FL_E | FL_T(1)),
.deliver = true, .deliver = true,
}, },
{
.name = "any local match",
.key_peer_addr = 12,
.key_local_addr = MCTP_ADDR_ANY,
.key_tag = 1,
.hdr = RX_HDR(1, 12, 8, FL_S | FL_E | FL_T(1)),
.deliver = true,
},
}; };
static void mctp_route_input_sk_keys_to_desc( static void mctp_route_input_sk_keys_to_desc(