diff mbox series

[net-next,v2,3/5] mctp: Add helper for address match checking

Message ID 20220209040557.391197-4-jk@codeconstruct.com.au (mailing list archive)
State Accepted
Commit 8069b22d656f6e1922352bff90ab78e6fab73779
Delegated to: Netdev Maintainers
Headers show
Series MCTP tag control interface | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 4 this patch: 4
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 18 this patch: 18
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 9 this patch: 9
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 31 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Jeremy Kerr Feb. 9, 2022, 4:05 a.m. UTC
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 mbox series

Patch

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);