diff mbox series

[v3,net-next,1/7] arp: Move ATF_COM setting in arp_req_set().

Message ID 20240430015813.71143-2-kuniyu@amazon.com (mailing list archive)
State Accepted
Commit 42033d0cfc8606adc9cb7e18d4c73d2e9a6289e5
Delegated to: Netdev Maintainers
Headers show
Series arp: Random clean up and RCU conversion for ioctl(SIOCGARP). | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 928 this patch: 928
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 938 this patch: 938
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 939 this patch: 939
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 22 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-05-01--06-00 (tests: 997)

Commit Message

Kuniyuki Iwashima April 30, 2024, 1:58 a.m. UTC 
In arp_req_set(), if ATF_PERM is set in arpreq.arp_flags,
ATF_COM is set automatically.

The flag will be used later for neigh_update() only when
a neighbour entry is found.

Let's set ATF_COM just before calling neigh_update().

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
---
 net/ipv4/arp.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index ab82ca104496..3093374165fa 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1054,8 +1054,7 @@  static int arp_req_set(struct net *net, struct arpreq *r,
 		return arp_req_set_public(net, r, dev);
 
 	ip = ((struct sockaddr_in *)&r->arp_pa)->sin_addr.s_addr;
-	if (r->arp_flags & ATF_PERM)
-		r->arp_flags |= ATF_COM;
+
 	if (!dev) {
 		struct rtable *rt = ip_route_output(net, ip, 0, 0, 0,
 						    RT_SCOPE_LINK);
@@ -1092,8 +1091,12 @@  static int arp_req_set(struct net *net, struct arpreq *r,
 	err = PTR_ERR(neigh);
 	if (!IS_ERR(neigh)) {
 		unsigned int state = NUD_STALE;
-		if (r->arp_flags & ATF_PERM)
+
+		if (r->arp_flags & ATF_PERM) {
+			r->arp_flags |= ATF_COM;
 			state = NUD_PERMANENT;
+		}
+
 		err = neigh_update(neigh, (r->arp_flags & ATF_COM) ?
 				   r->arp_ha.sa_data : NULL, state,
 				   NEIGH_UPDATE_F_OVERRIDE |