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devlink: Add packet trap group parameters support

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Packet trap groups are used to aggregate logically related packet traps.
Currently, these groups allow user space to batch operations such as
setting the trap action of all member traps.

In order to prevent the CPU from being overwhelmed by too many trapped
packets, it is desirable to bind a packet trap policer to these groups.
For example, to limit all the packets that encountered an exception
during routing to 10Kpps.

Allow device drivers to bind default packet trap policers to packet trap
groups when the latter are registered with devlink.

The next patch will enable user space to change this default binding.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel
2020-03-30 22:38:21 +03:00
committed by David S. Miller
parent ad188458d0
commit f9f54392d2
4 changed files with 43 additions and 9 deletions
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8
drivers/net/netdevsim/dev.c
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@@ -452,10 +452,10 @@ static const struct devlink_trap_policer nsim_trap_policers_arr[] = {
};
static const struct devlink_trap_group nsim_trap_groups_arr[] = {
DEVLINK_TRAP_GROUP_GENERIC(L2_DROPS),
DEVLINK_TRAP_GROUP_GENERIC(L3_DROPS),
DEVLINK_TRAP_GROUP_GENERIC(BUFFER_DROPS),
DEVLINK_TRAP_GROUP_GENERIC(ACL_DROPS),
DEVLINK_TRAP_GROUP_GENERIC(L2_DROPS, 0),
DEVLINK_TRAP_GROUP_GENERIC(L3_DROPS, 1),
DEVLINK_TRAP_GROUP_GENERIC(BUFFER_DROPS, 2),
DEVLINK_TRAP_GROUP_GENERIC(ACL_DROPS, 3),
};
static const struct devlink_trap nsim_traps_arr[] = {