[PATCH net-next 3/5] mctp: Add helper for address match checking
From: Jeremy Kerr <jk@codeconstruct.com.au>
Date: 2022-02-08 11:28:27
Also in:
linux-doc
Subsystem:
management component transport protocol (mctp), networking [general], the rest · Maintainers:
Jeremy Kerr, Matt Johnston, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Currently, we have a couple of paths that check that an EID matches, or the match value is MCTP_ADDR_ANY. Rather than open coding this, add a little helper. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> --- include/net/mctp.h | 5 +++++ net/mctp/route.c | 8 +++----- 2 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/include/net/mctp.h b/include/net/mctp.h
index 7e35ec79b909..706d329dd8e8 100644
--- a/include/net/mctp.h
+++ b/include/net/mctp.h@@ -45,6 +45,11 @@ static inline bool mctp_address_ok(mctp_eid_t eid) return eid >= 8 && eid < 255; } +static inline bool mctp_address_matches(mctp_eid_t match, mctp_eid_t eid) +{ + return match == eid || match == MCTP_ADDR_ANY; +} + static inline struct mctp_hdr *mctp_hdr(struct sk_buff *skb) { return (struct mctp_hdr *)skb_network_header(skb);
diff --git a/net/mctp/route.c b/net/mctp/route.c
index 8d9f4ff3e285..654467a7aeae 100644
--- a/net/mctp/route.c
+++ b/net/mctp/route.c@@ -64,8 +64,7 @@ static struct mctp_sock *mctp_lookup_bind(struct net *net, struct sk_buff *skb) if (msk->bind_type != type) continue; - if (msk->bind_addr != MCTP_ADDR_ANY && - msk->bind_addr != mh->dest) + if (!mctp_address_matches(msk->bind_addr, mh->dest)) continue; return msk;
@@ -616,9 +615,8 @@ static struct mctp_sk_key *mctp_alloc_local_tag(struct mctp_sock *msk, if (tmp->tag & MCTP_HDR_FLAG_TO) continue; - if (!((tmp->peer_addr == daddr || - tmp->peer_addr == MCTP_ADDR_ANY) && - tmp->local_addr == saddr)) + if (!(mctp_address_matches(tmp->peer_addr, daddr) && + tmp->local_addr == saddr)) continue; spin_lock(&tmp->lock);
--
2.34.1