linux-kernel - [PATCH] arp: Remove the arp_hh

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Message-Id: <20210220043203.11754-1-yejune.deng@gmail.com>
Date:   Sat, 20 Feb 2021 12:32:03 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
        kuba@...nel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        yejune.deng@...il.com
Subject: [PATCH] arp: Remove the arp_hh_ops structure

The 'arp_hh_ops' structure is similar to the 'arp_generic_ops' structure.
So remove the 'arp_hh_ops' structure.

Signed-off-by: Yejune Deng <yejune.deng@...il.com>
---
 net/ipv4/arp.c | 19 +++----------------
 1 file changed, 3 insertions(+), 16 deletions(-)

diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 922dd73e5740..6d60d9b89286 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -135,14 +135,6 @@ static const struct neigh_ops arp_generic_ops = {
 	.connected_output =	neigh_connected_output,
 };
 
-static const struct neigh_ops arp_hh_ops = {
-	.family =		AF_INET,
-	.solicit =		arp_solicit,
-	.error_report =		arp_error_report,
-	.output =		neigh_resolve_output,
-	.connected_output =	neigh_resolve_output,
-};
-
 static const struct neigh_ops arp_direct_ops = {
 	.family =		AF_INET,
 	.output =		neigh_direct_output,
@@ -277,15 +269,10 @@ static int arp_constructor(struct neighbour *neigh)
 			memcpy(neigh->ha, dev->broadcast, dev->addr_len);
 		}
 
-		if (dev->header_ops->cache)
-			neigh->ops = &arp_hh_ops;
-		else
-			neigh->ops = &arp_generic_ops;
-
-		if (neigh->nud_state & NUD_VALID)
-			neigh->output = neigh->ops->connected_output;
+		if (!dev->header_ops->cache && (neigh->nud_state & NUD_VALID))
+			neigh->output = arp_generic_ops.connected_output;
 		else
-			neigh->output = neigh->ops->output;
+			neigh->output = arp_generic_ops.output;
 	}
 	return 0;
 }
-- 
2.29.0