netdev - [PATCH RFC net-next 05/18] net/ipv4: Define fib_get_nhs when CONFIG_IP_ROUTE

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Message-Id: <20180901004954.7145-6-dsahern@kernel.org>
Date:   Fri, 31 Aug 2018 17:49:40 -0700
From:   dsahern@...nel.org
To:     netdev@...r.kernel.org
Cc:     roopa@...ulusnetworks.com, sharpd@...ulusnetworks.com,
        idosch@...lanox.com, davem@...emloft.net,
        David Ahern <dsahern@...il.com>
Subject: [PATCH RFC net-next 05/18] net/ipv4: Define fib_get_nhs when CONFIG_IP_ROUTE_MULTIPATH is disabled

From: David Ahern <dsahern@...il.com>

Define fib_get_nhs to return EINVAL when CONFIG_IP_ROUTE_MULTIPATH is
not enabled and remove the ifdef check for CONFIG_IP_ROUTE_MULTIPATH.

Signed-off-by: David Ahern <dsahern@...il.com>
---
 net/ipv4/fib_semantics.c | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 9f8126debba5..9b2d8ba6bdb3 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -603,6 +603,15 @@ static void fib_rebalance(struct fib_info *fi)
 }
 #else /* CONFIG_IP_ROUTE_MULTIPATH */
 
+static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
+		       int remaining, struct fib_config *cfg,
+		       struct netlink_ext_ack *extack)
+{
+	NL_SET_ERR_MSG(extack, "Multipath support not enabled in kernel");
+
+	return -EINVAL;
+}
+
 #define fib_rebalance(fi) do { } while (0)
 
 #endif /* CONFIG_IP_ROUTE_MULTIPATH */
@@ -1112,7 +1121,6 @@ struct fib_info *fib_create_info(struct fib_config *cfg,
 		goto failure;
 
 	if (cfg->fc_mp) {
-#ifdef CONFIG_IP_ROUTE_MULTIPATH
 		err = fib_get_nhs(fi, cfg->fc_mp, cfg->fc_mp_len, cfg, extack);
 		if (err != 0)
 			goto failure;
@@ -1133,11 +1141,6 @@ struct fib_info *fib_create_info(struct fib_config *cfg,
 			goto err_inval;
 		}
 #endif
-#else
-		NL_SET_ERR_MSG(extack,
-			       "Multipath support not enabled in kernel");
-		goto err_inval;
-#endif
 	} else {
 		struct fib_nh *nh = fi->fib_nh;
 
-- 
2.11.0