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From: dsahern@kernel.org
To: netdev@vger.kernel.org
Cc: nikita.leshchenko@oracle.com, roopa@cumulusnetworks.com,
	stephen@networkplumber.org, idosch@mellanox.com,
	jiri@mellanox.com, saeedm@mellanox.com, alex.aring@gmail.com,
	linux-wpan@vger.kernel.org, netfilter-devel@vger.kernel.org,
	linux-kernel@vger.kernel.org, David Ahern <dsahern@gmail.com>
Subject: [PATCH RFC/RFT net-next 10/17] net: Add key_len to neighbor constructor
Date: Tue, 17 Jul 2018 05:06:44 -0700
Message-ID: <20180717120651.15748-11-dsahern@kernel.org> (raw)
In-Reply-To: <20180717120651.15748-1-dsahern@kernel.org>

From: David Ahern <dsahern@gmail.com>

Allows arp_constructor to not reference the arp_tbl directly.
ndisc_constructor assumes key length. Could do the same with arp.

Signed-off-by: David Ahern <dsahern@gmail.com>
---
 include/net/neighbour.h | 3 ++-
 net/core/neighbour.c    | 3 ++-
 net/decnet/dn_neigh.c   | 4 ++--
 net/ipv4/arp.c          | 6 +++---
 net/ipv6/ndisc.c        | 4 ++--
 5 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 5bc4d79b4b3a..6cf9ce16eac8 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -198,7 +198,8 @@ struct neigh_table {
 					const struct net_device *dev,
 					__u32 *hash_rnd);
 	bool			(*key_eq)(const struct neighbour *, const void *pkey);
-	int			(*constructor)(struct neighbour *);
+	int			(*constructor)(struct neighbour *,
+					       unsigned int key_len);
 	int			(*pconstructor)(struct pneigh_entry *);
 	void			(*pdestructor)(struct pneigh_entry *);
 	void			(*proxy_redo)(struct sk_buff *skb);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index e8630f9de24a..41841d8e4ea4 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -505,7 +505,8 @@ struct neighbour *__neigh_create(struct neigh_table *tbl, const void *pkey,
 	dev_hold(dev);
 
 	/* Protocol specific setup. */
-	if (tbl->constructor &&	(error = tbl->constructor(n)) < 0) {
+	if (tbl->constructor &&
+	    (error = tbl->constructor(n, tbl->key_len)) < 0) {
 		rc = ERR_PTR(error);
 		goto out_neigh_release;
 	}
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 94b306f6d551..74112777beb0 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -49,7 +49,7 @@
 #include <net/dn_neigh.h>
 #include <net/dn_route.h>
 
-static int dn_neigh_construct(struct neighbour *);
+static int dn_neigh_construct(struct neighbour *, unsigned int key_len);
 static void dn_neigh_error_report(struct neighbour *, struct sk_buff *);
 static int dn_neigh_output(struct neighbour *neigh, struct sk_buff *skb);
 
@@ -108,7 +108,7 @@ struct neigh_table dn_neigh_table = {
 	.gc_thresh3 =			1024,
 };
 
-static int dn_neigh_construct(struct neighbour *neigh)
+static int dn_neigh_construct(struct neighbour *neigh, unsigned int key_len)
 {
 	struct net_device *dev = neigh->dev;
 	struct dn_neigh *dn = container_of(neigh, struct dn_neigh, n);
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index fd4a380da9bb..7b27faefa01b 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -125,7 +125,7 @@
  */
 static u32 arp_hash(const void *pkey, const struct net_device *dev, __u32 *hash_rnd);
 static bool arp_key_eq(const struct neighbour *n, const void *pkey);
-static int arp_constructor(struct neighbour *neigh);
+static int arp_constructor(struct neighbour *neigh, unsigned int key_len);
 static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb);
 static void arp_error_report(struct neighbour *neigh, struct sk_buff *skb);
 static void parp_redo(struct sk_buff *skb);
@@ -221,7 +221,7 @@ static bool arp_key_eq(const struct neighbour *neigh, const void *pkey)
 	return neigh_key_eq32(neigh, pkey);
 }
 
-static int arp_constructor(struct neighbour *neigh)
+static int arp_constructor(struct neighbour *neigh, unsigned int key_len)
 {
 	__be32 addr;
 	struct net_device *dev = neigh->dev;
@@ -230,7 +230,7 @@ static int arp_constructor(struct neighbour *neigh)
 	u32 inaddr_any = INADDR_ANY;
 
 	if (dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))
-		memcpy(neigh->primary_key, &inaddr_any, arp_tbl.key_len);
+		memcpy(neigh->primary_key, &inaddr_any, key_len);
 
 	addr = *(__be32 *)neigh->primary_key;
 	rcu_read_lock();
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 14b925f36099..5103d8641b04 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -77,7 +77,7 @@ static u32 ndisc_hash(const void *pkey,
 		      const struct net_device *dev,
 		      __u32 *hash_rnd);
 static bool ndisc_key_eq(const struct neighbour *neigh, const void *pkey);
-static int ndisc_constructor(struct neighbour *neigh);
+static int ndisc_constructor(struct neighbour *neigh, unsigned int key_len);
 static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb);
 static void ndisc_error_report(struct neighbour *neigh, struct sk_buff *skb);
 static int pndisc_constructor(struct pneigh_entry *n);
@@ -319,7 +319,7 @@ static bool ndisc_key_eq(const struct neighbour *n, const void *pkey)
 	return neigh_key_eq128(n, pkey);
 }
 
-static int ndisc_constructor(struct neighbour *neigh)
+static int ndisc_constructor(struct neighbour *neigh, unsigned int key_len)
 {
 	struct in6_addr *addr = (struct in6_addr *)&neigh->primary_key;
 	struct net_device *dev = neigh->dev;
-- 
2.11.0


  parent reply index

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-17 12:06 [PATCH RFC/RFT net-next 00/17] net: Convert neighbor tables to per-namespace dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 01/17] net/ipv4: rename ipv4_neigh_lookup to ipv4_dst_neigh_lookup dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 02/17] net/neigh: export neigh_find_table dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 03/17] net/ipv4: wrappers for arp table references dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 04/17] net/ipv4: Remove open coded use of arp table dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 05/17] net/ipv6: wrappers for neighbor table references dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 06/17] net/ipv6: Remove open coded use of neighbor table dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 07/17] drivers/net: remove open coding of neighbor tables dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 08/17] net: Remove nd_tbl from ipv6 stub dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 09/17] net: Remove arp_tbl and nd_tbl from headers dsahern
2018-07-17 12:06 ` dsahern [this message]
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 11/17] net: Change neigh_table_init and neigh_table_clear signature dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 12/17] net/neigh: Change neigh_xmit to take an address family dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 13/17] net/neighbor: Convert internal functions away from neigh_tables dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 14/17] net/ipv4: Convert arp table to per namespace dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 15/17] net/ipv6: Convert neighbor table to per-namespace dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 16/17] net/decnet: Move " dsahern
2018-07-17 12:06 ` [PATCH RFC/RFT net-next 17/17] net/neighbor: Remove neigh_tables and NEIGH enum dsahern
2018-07-17 17:40 ` [PATCH RFC/RFT net-next 00/17] net: Convert neighbor tables to per-namespace Cong Wang
2018-07-17 17:43   ` David Ahern
2018-07-17 17:53     ` Cong Wang
2018-07-17 19:02       ` David Ahern
2018-07-17 20:37         ` Cong Wang
2018-07-18  3:59         ` David Miller
2018-07-19 16:16           ` David Ahern
2018-07-19 17:12             ` Cong Wang
2018-07-24 15:14               ` David Ahern
2018-07-24 17:14                 ` David Miller
2018-07-25 18:23                   ` David Ahern
2018-07-24 22:09                 ` Cong Wang
2018-07-25 12:33                   ` Eric W. Biederman
2018-07-25 14:06                     ` David Ahern
2018-07-25 17:38                       ` Eric W. Biederman
2018-07-25 18:13                         ` David Ahern
2018-07-25 19:17                           ` Eric W. Biederman
2018-08-13 21:48                             ` David Ahern
2018-08-15  4:36                               ` Eric W. Biederman
2018-07-26 11:12                         ` David Laight
2018-07-27 16:27                           ` Eric W. Biederman
2018-07-19  0:54 ` Michael Richardson
2018-07-19 15:49   ` David Ahern
2018-08-12  6:46 ` [RFC/RFT, net-next, " Vasily Averin
2018-08-12 17:37   ` David Ahern

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