netdev - [PATCH RFC net-next 1/7] net/ipv4: Pass net to fib_multipath_hash instead of fib

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Message-Id: <20180213000602.12150-2-dsahern@gmail.com>
Date:   Mon, 12 Feb 2018 16:05:56 -0800
From:   David Ahern <dsahern@...il.com>
To:     netdev@...r.kernel.org
Cc:     roopa@...ulusnetworks.com, nikolay@...ulusnetworks.com,
        idosch@...lanox.com, David Ahern <dsahern@...il.com>
Subject: [PATCH RFC net-next 1/7] net/ipv4: Pass net to fib_multipath_hash instead of fib_info

fib_multipath_hash only needs net struct to check a sysctl. Make it
clear by passing net instead of fib_info. In the need this allows
alignment between the ipv4 and ipv6 versions.

Signed-off-by: David Ahern <dsahern@...il.com>
---
 include/net/ip_fib.h     | 2 +-
 net/ipv4/fib_semantics.c | 2 +-
 net/ipv4/route.c         | 5 ++---
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index f80524396c06..0472bf774a5a 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -370,7 +370,7 @@ int fib_sync_down_addr(struct net_device *dev, __be32 local);
 int fib_sync_up(struct net_device *dev, unsigned int nh_flags);
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
-int fib_multipath_hash(const struct fib_info *fi, const struct flowi4 *fl4,
+int fib_multipath_hash(const struct net *net, const struct flowi4 *fl4,
 		       const struct sk_buff *skb);
 #endif
 void fib_select_multipath(struct fib_result *res, int hash);
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index c586597da20d..e22443244190 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1767,7 +1767,7 @@ void fib_select_path(struct net *net, struct fib_result *res,
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 	if (res->fi->fib_nhs > 1 && oif_check) {
-		int h = fib_multipath_hash(res->fi, fl4, skb);
+		int h = fib_multipath_hash(res->fi->fib_net, fl4, skb);
 
 		fib_select_multipath(res, h);
 	}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 49cc1c1df1ba..975c4b7cff07 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1797,10 +1797,9 @@ static void ip_multipath_l3_keys(const struct sk_buff *skb,
 }
 
 /* if skb is set it will be used and fl4 can be NULL */
-int fib_multipath_hash(const struct fib_info *fi, const struct flowi4 *fl4,
+int fib_multipath_hash(const struct net *net, const struct flowi4 *fl4,
 		       const struct sk_buff *skb)
 {
-	struct net *net = fi->fib_net;
 	struct flow_keys hash_keys;
 	u32 mhash;
 
@@ -1856,7 +1855,7 @@ static int ip_mkroute_input(struct sk_buff *skb,
 {
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 	if (res->fi && res->fi->fib_nhs > 1) {
-		int h = fib_multipath_hash(res->fi, NULL, skb);
+		int h = fib_multipath_hash(res->fi->fib_net, NULL, skb);
 
 		fib_select_multipath(res, h);
 	}
-- 
2.11.0