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From: Ido Schimmel <idosch@idosch.org>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, kuba@kernel.org, dsahern@gmail.com,
	roopa@nvidia.com, mlxsw@nvidia.com,
	Ido Schimmel <idosch@nvidia.com>
Subject: [RFC PATCH net-next 09/22] rtnetlink: Add RTNH_F_TRAP flag
Date: Tue,  8 Sep 2020 12:10:24 +0300	[thread overview]
Message-ID: <20200908091037.2709823-10-idosch@idosch.org> (raw)
In-Reply-To: <20200908091037.2709823-1-idosch@idosch.org>

From: Ido Schimmel <idosch@nvidia.com>

The flag indicates to user space that the nexthop is not programmed to
forward packets in hardware, but rather to trap them.

The flag will be used in subsequent patches by netdevsim to test nexthop
objects programming to device drivers and in the future by mlxsw as
well.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
---
 include/uapi/linux/rtnetlink.h | 6 ++++--
 net/ipv4/fib_semantics.c       | 2 ++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
index 9b814c92de12..0ca2057d3269 100644
--- a/include/uapi/linux/rtnetlink.h
+++ b/include/uapi/linux/rtnetlink.h
@@ -396,11 +396,13 @@ struct rtnexthop {
 #define RTNH_F_DEAD		1	/* Nexthop is dead (used by multipath)	*/
 #define RTNH_F_PERVASIVE	2	/* Do recursive gateway lookup	*/
 #define RTNH_F_ONLINK		4	/* Gateway is forced on link	*/
-#define RTNH_F_OFFLOAD		8	/* offloaded route */
+#define RTNH_F_OFFLOAD		8	/* Nexthop is offloaded */
 #define RTNH_F_LINKDOWN		16	/* carrier-down on nexthop */
 #define RTNH_F_UNRESOLVED	32	/* The entry is unresolved (ipmr) */
+#define RTNH_F_TRAP		64	/* Nexthop is trapping packets */
 
-#define RTNH_COMPARE_MASK	(RTNH_F_DEAD | RTNH_F_LINKDOWN | RTNH_F_OFFLOAD)
+#define RTNH_COMPARE_MASK	(RTNH_F_DEAD | RTNH_F_LINKDOWN | \
+				 RTNH_F_OFFLOAD | RTNH_F_TRAP)
 
 /* Macros to handle hexthops */
 
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 1f75dc686b6b..f70b9a0c4957 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -1644,6 +1644,8 @@ int fib_nexthop_info(struct sk_buff *skb, const struct fib_nh_common *nhc,
 	*flags |= (nhc->nhc_flags & RTNH_F_ONLINK);
 	if (nhc->nhc_flags & RTNH_F_OFFLOAD)
 		*flags |= RTNH_F_OFFLOAD;
+	if (nhc->nhc_flags & RTNH_F_TRAP)
+		*flags |= RTNH_F_TRAP;
 
 	if (!skip_oif && nhc->nhc_dev &&
 	    nla_put_u32(skb, RTA_OIF, nhc->nhc_dev->ifindex))
-- 
2.26.2


  parent reply	other threads:[~2020-09-08  9:12 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-08  9:10 [RFC PATCH net-next 00/22] nexthop: Add support for nexthop objects offload Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 01/22] nexthop: Remove unused function declaration from header file Ido Schimmel
2020-09-08 14:29   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 02/22] nexthop: Convert to blocking notification chain Ido Schimmel
2020-09-08 14:34   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 03/22] nexthop: Only emit a notification when nexthop is actually deleted Ido Schimmel
2020-09-08 14:34   ` David Ahern
2020-09-08 14:39   ` Jiri Pirko
2020-09-08 14:42     ` David Ahern
2020-09-11 14:40     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 04/22] selftests: fib_nexthops: Test cleanup of FDB entries following nexthop deletion Ido Schimmel
2020-09-08 14:35   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 05/22] nexthop: Add nexthop notification data structures Ido Schimmel
2020-09-08 14:43   ` David Ahern
2020-09-11 14:50     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 06/22] nexthop: Pass extack to nexthop notifier Ido Schimmel
2020-09-08 14:44   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 07/22] nexthop: Prepare new notification info Ido Schimmel
2020-09-08 14:55   ` David Ahern
2020-09-11 15:01     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 08/22] nexthop: vxlan: Convert to " Ido Schimmel
2020-09-08 14:58   ` David Ahern
2020-09-11 15:05     ` Ido Schimmel
2020-09-08  9:10 ` Ido Schimmel [this message]
2020-09-08 15:02   ` [RFC PATCH net-next 09/22] rtnetlink: Add RTNH_F_TRAP flag David Ahern
2020-09-11 15:26     ` Ido Schimmel
2020-09-11 15:54       ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 10/22] nexthop: Allow setting "offload" and "trap" indications on nexthops Ido Schimmel
2020-09-08 15:14   ` David Ahern
2020-09-11 15:29     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 11/22] nexthop: Emit a notification when a nexthop is added Ido Schimmel
2020-09-08 15:21   ` David Ahern
2020-09-11 16:20     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 12/22] nexthop: Emit a notification when a nexthop group is replaced Ido Schimmel
2020-09-08 15:22   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 13/22] nexthop: Emit a notification when a single nexthop " Ido Schimmel
2020-09-08 15:25   ` David Ahern
2020-09-11 16:24     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 14/22] nexthop: Emit a notification when a nexthop group is modified Ido Schimmel
2020-09-08 15:29   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 15/22] nexthop: Emit a notification when a nexthop group is reduced Ido Schimmel
2020-09-08 15:33   ` David Ahern
2020-09-11 16:29     ` Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 16/22] nexthop: Pass extack to register_nexthop_notifier() Ido Schimmel
2020-09-08 15:34   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 17/22] nexthop: Replay nexthops when registering a notifier Ido Schimmel
2020-09-08 15:37   ` David Ahern
2020-09-11 16:40     ` Ido Schimmel
2020-09-11 16:47       ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 18/22] nexthop: Remove in-kernel route notifications when nexthop changes Ido Schimmel
2020-09-08 15:38   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 19/22] netdevsim: Add devlink resource for nexthops Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 20/22] netdevsim: Add dummy implementation for nexthop offload Ido Schimmel
2020-09-08  9:10 ` [RFC PATCH net-next 21/22] netdevsim: Allow programming routes with nexthop objects Ido Schimmel
2020-09-08 15:40   ` David Ahern
2020-09-08  9:10 ` [RFC PATCH net-next 22/22] selftests: netdevsim: Add test for nexthop offload API Ido Schimmel

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