Commit Graph

5873 Commits

Author SHA1 Message Date
Ido Schimmel
3a99cbb6fa mlxsw: spectrum_dpipe: Add missing error path
In case devlink_dpipe_entry_ctx_prepare() failed, release RTNL that was
previously taken and free the memory allocated by
mlxsw_sp_erif_entry_prepare().

Fixes: 2ba5999f00 ("mlxsw: spectrum: Add Support for erif table entries access")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-07 18:47:01 +01:00
Vadim Pasternak
36844c855b mlxsw: core: Add validation of hardware device types for MGPIR register
When reading the number of gearboxes from the hardware, the driver does
not validate the returned 'device type' field. The driver can therefore
wrongly assume that the queried devices are gearboxes.

On Spectrum-3 systems that support different types of devices, this can
prevent the driver from loading, as it will try to query the
temperature sensors from devices which it assumes are gearboxes and in
fact are not.

For example:
[  218.129230] mlxsw_minimal 2-0048: Reg cmd access status failed (status=7(bad parameter))
[  218.138282] mlxsw_minimal 2-0048: Reg cmd access failed (reg_id=900a(mtmp),type=write)
[  218.147131] mlxsw_minimal 2-0048: Failed to setup temp sensor number 256
[  218.534480] mlxsw_minimal 2-0048: Fail to register core bus
[  218.540714] mlxsw_minimal: probe of 2-0048 failed with error -5

Fix this by validating the 'device type' field.

Fixes: 2e265a8b6c ("mlxsw: core: Extend hwmon interface with inter-connect temperature attributes")
Fixes: f14f4e621b ("mlxsw: core: Extend thermal core with per inter-connect device thermal zones")
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-07 18:47:01 +01:00
Ido Schimmel
490f0542a7 mlxsw: spectrum_router: Clear offload indication from IPv6 nexthops on abort
Unlike IPv4, in IPv6 there is no unique structure to represent the
nexthop and both the route and nexthop information are squashed to the
same structure ('struct fib6_info'). In order to improve resource
utilization the driver consolidates identical nexthop groups to the same
internal representation of a nexthop group.

Therefore, when the offload indication of a nexthop changes, the driver
needs to iterate over all the linked fib6_info and toggle their offload
flag accordingly.

During abort, all the routes are removed from the device and unlinked
from their nexthop group. The offload indication is cleared just before
the group is destroyed, but by that time no fib6_info is linked to the
group and the offload indication remains set.

Fix this by clearing the offload indication just before dropping the
reference from the nexthop.

Fixes: ee5a0448e7 ("mlxsw: spectrum_router: Set hardware flags for routes")
Reported-by: Alex Kushnarov <alexanderk@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: Alex Kushnarov <alexanderk@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-07 18:47:01 +01:00
Ido Schimmel
0508ff8934 mlxsw: spectrum_router: Prevent incorrect replacement of local table routes
The driver uses the same table to represent both the main and local
routing tables. Prevent routes in the main table from replacing routes
in the local table to reflect the fact that the local table is consulted
first during lookup.

Fixes: b6a1d871d3 ("mlxsw: spectrum_router: Start using new IPv4 route notifications")
Fixes: dacad7b34b ("mlxsw: spectrum_router: Start using new IPv6 route notifications")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-07 18:47:01 +01:00
Tariq Toukan
61c00cca41 net/mlx5: Deprecate usage of generic TLS HW capability bit
Deprecate the generic TLS cap bit, use the new TX-specific
TLS cap bit instead.

Fixes: a12ff35e0f ("net/mlx5: Introduce TLS TX offload hardware bits and structures")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-06 12:24:24 -08:00
Tariq Toukan
b57e66ad42 net/mlx5e: TX, Error completion is for last WQE in batch
For a cyclic work queue, when not requesting a completion per WQE,
a single CQE might indicate the completion of several WQEs.
However, in case some WQE in the batch causes an error, then an error
completion is issued, breaking the batch, and pointing to the offending
WQE in the wqe_counter field.

Hence, WQE-specific error CQE handling (like printing, breaking, etc...)
should be performed only for the last WQE in batch.

Fixes: 130c7b46c9 ("net/mlx5e: TX, Dump WQs wqe descriptors on CQE with error events")
Fixes: fd9b4be800 ("net/mlx5e: RX, Support multiple outstanding UMR posts")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-06 12:24:23 -08:00
Raed Salem
08db2cf577 net/mlx5: IPsec, fix memory leak at mlx5_fpga_ipsec_delete_sa_ctx
SA context is allocated at mlx5_fpga_ipsec_create_sa_ctx,
however the counterpart mlx5_fpga_ipsec_delete_sa_ctx function
nullifies sa_ctx pointer without freeing the memory allocated,
hence the memory leak.

Fix by free SA context when the SA is released.

Fixes: d6c4f0298c ("net/mlx5: Refactor accel IPSec code")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-06 12:24:23 -08:00
Raed Salem
0dc2c534f1 net/mlx5: IPsec, Fix esp modify function attribute
The function mlx5_fpga_esp_validate_xfrm_attrs is wrongly used
with negative negation as zero value indicates success but it
used as failure return value instead.

Fix by remove the unary not negation operator.

Fixes: 05564d0ae0 ("net/mlx5: Add flow-steering commands for FPGA IPSec implementation")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-06 12:24:22 -08:00
Maor Gottlieb
c1948390d7 net/mlx5: Fix deadlock in fs_core
free_match_list could be called when the flow table is already
locked. We need to pass this notation to tree_put_node.

It fixes the following lockdep warnning:

[ 1797.268537] ============================================
[ 1797.276837] WARNING: possible recursive locking detected
[ 1797.285101] 5.5.0-rc5+ #10 Not tainted
[ 1797.291641] --------------------------------------------
[ 1797.299917] handler10/9296 is trying to acquire lock:
[ 1797.307885] ffff889ad399a0a0 (&node->lock){++++}, at:
tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.319694]
[ 1797.319694] but task is already holding lock:
[ 1797.330904] ffff889ad399a0a0 (&node->lock){++++}, at:
nested_down_write_ref_node.part.33+0x1a/0x60 [mlx5_core]
[ 1797.344707]
[ 1797.344707] other info that might help us debug this:
[ 1797.356952]  Possible unsafe locking scenario:
[ 1797.356952]
[ 1797.368333]        CPU0
[ 1797.373357]        ----
[ 1797.378364]   lock(&node->lock);
[ 1797.384222]   lock(&node->lock);
[ 1797.390031]
[ 1797.390031]  *** DEADLOCK ***
[ 1797.390031]
[ 1797.403003]  May be due to missing lock nesting notation
[ 1797.403003]
[ 1797.414691] 3 locks held by handler10/9296:
[ 1797.421465]  #0: ffff889cf2c5a110 (&block->cb_lock){++++}, at:
tc_setup_cb_add+0x70/0x250
[ 1797.432810]  #1: ffff88a030081490 (&comp->sem){++++}, at:
mlx5_devcom_get_peer_data+0x4c/0xb0 [mlx5_core]
[ 1797.445829]  #2: ffff889ad399a0a0 (&node->lock){++++}, at:
nested_down_write_ref_node.part.33+0x1a/0x60 [mlx5_core]
[ 1797.459913]
[ 1797.459913] stack backtrace:
[ 1797.469436] CPU: 1 PID: 9296 Comm: handler10 Kdump: loaded Not
tainted 5.5.0-rc5+ #10
[ 1797.480643] Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS
2.4.3 01/17/2017
[ 1797.491480] Call Trace:
[ 1797.496701]  dump_stack+0x96/0xe0
[ 1797.502864]  __lock_acquire.cold.63+0xf8/0x212
[ 1797.510301]  ? lockdep_hardirqs_on+0x250/0x250
[ 1797.517701]  ? mark_held_locks+0x55/0xa0
[ 1797.524547]  ? quarantine_put+0xb7/0x160
[ 1797.531422]  ? lockdep_hardirqs_on+0x17d/0x250
[ 1797.538913]  lock_acquire+0xd6/0x1f0
[ 1797.545529]  ? tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.553701]  down_write+0x94/0x140
[ 1797.560206]  ? tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.568464]  ? down_write_killable_nested+0x170/0x170
[ 1797.576925]  ? del_hw_flow_group+0xde/0x1f0 [mlx5_core]
[ 1797.585629]  tree_put_node+0x1d5/0x210 [mlx5_core]
[ 1797.593891]  ? free_match_list.part.25+0x147/0x170 [mlx5_core]
[ 1797.603389]  free_match_list.part.25+0xe0/0x170 [mlx5_core]
[ 1797.612654]  _mlx5_add_flow_rules+0x17e2/0x20b0 [mlx5_core]
[ 1797.621838]  ? lock_acquire+0xd6/0x1f0
[ 1797.629028]  ? esw_get_prio_table+0xb0/0x3e0 [mlx5_core]
[ 1797.637981]  ? alloc_insert_flow_group+0x420/0x420 [mlx5_core]
[ 1797.647459]  ? try_to_wake_up+0x4c7/0xc70
[ 1797.654881]  ? lock_downgrade+0x350/0x350
[ 1797.662271]  ? __mutex_unlock_slowpath+0xb1/0x3f0
[ 1797.670396]  ? find_held_lock+0xac/0xd0
[ 1797.677540]  ? mlx5_add_flow_rules+0xdc/0x360 [mlx5_core]
[ 1797.686467]  mlx5_add_flow_rules+0xdc/0x360 [mlx5_core]
[ 1797.695134]  ? _mlx5_add_flow_rules+0x20b0/0x20b0 [mlx5_core]
[ 1797.704270]  ? irq_exit+0xa5/0x170
[ 1797.710764]  ? retint_kernel+0x10/0x10
[ 1797.717698]  ? mlx5_eswitch_set_rule_source_port.isra.9+0x122/0x230
[mlx5_core]
[ 1797.728708]  mlx5_eswitch_add_offloaded_rule+0x465/0x6d0 [mlx5_core]
[ 1797.738713]  ? mlx5_eswitch_get_prio_range+0x30/0x30 [mlx5_core]
[ 1797.748384]  ? mlx5_fc_stats_work+0x670/0x670 [mlx5_core]
[ 1797.757400]  mlx5e_tc_offload_fdb_rules.isra.27+0x24/0x90 [mlx5_core]
[ 1797.767665]  mlx5e_tc_add_fdb_flow+0xaf8/0xd40 [mlx5_core]
[ 1797.776886]  ? mlx5e_encap_put+0xd0/0xd0 [mlx5_core]
[ 1797.785562]  ? mlx5e_alloc_flow.isra.43+0x18c/0x1c0 [mlx5_core]
[ 1797.795353]  __mlx5e_add_fdb_flow+0x2e2/0x440 [mlx5_core]
[ 1797.804558]  ? mlx5e_tc_update_neigh_used_value+0x8c0/0x8c0
[mlx5_core]
[ 1797.815093]  ? wait_for_completion+0x260/0x260
[ 1797.823272]  mlx5e_configure_flower+0xe94/0x1620 [mlx5_core]
[ 1797.832792]  ? __mlx5e_add_fdb_flow+0x440/0x440 [mlx5_core]
[ 1797.842096]  ? down_read+0x11a/0x2e0
[ 1797.849090]  ? down_write+0x140/0x140
[ 1797.856142]  ? mlx5e_rep_indr_setup_block_cb+0xc0/0xc0 [mlx5_core]
[ 1797.866027]  tc_setup_cb_add+0x11a/0x250
[ 1797.873339]  fl_hw_replace_filter+0x25e/0x320 [cls_flower]
[ 1797.882385]  ? fl_hw_destroy_filter+0x1c0/0x1c0 [cls_flower]
[ 1797.891607]  fl_change+0x1d54/0x1fb6 [cls_flower]
[ 1797.899772]  ? __rhashtable_insert_fast.constprop.50+0x9f0/0x9f0
[cls_flower]
[ 1797.910728]  ? lock_downgrade+0x350/0x350
[ 1797.918187]  ? __radix_tree_lookup+0xa5/0x130
[ 1797.926046]  ? fl_set_key+0x1590/0x1590 [cls_flower]
[ 1797.934611]  ? __rhashtable_insert_fast.constprop.50+0x9f0/0x9f0
[cls_flower]
[ 1797.945673]  tc_new_tfilter+0xcd1/0x1240
[ 1797.953138]  ? tc_del_tfilter+0xb10/0xb10
[ 1797.960688]  ? avc_has_perm_noaudit+0x92/0x320
[ 1797.968721]  ? avc_has_perm_noaudit+0x1df/0x320
[ 1797.976816]  ? avc_has_extended_perms+0x990/0x990
[ 1797.985090]  ? mark_lock+0xaa/0x9e0
[ 1797.991988]  ? match_held_lock+0x1b/0x240
[ 1797.999457]  ? match_held_lock+0x1b/0x240
[ 1798.006859]  ? find_held_lock+0xac/0xd0
[ 1798.014045]  ? symbol_put_addr+0x40/0x40
[ 1798.021317]  ? rcu_read_lock_sched_held+0xd0/0xd0
[ 1798.029460]  ? tc_del_tfilter+0xb10/0xb10
[ 1798.036810]  rtnetlink_rcv_msg+0x4d5/0x620
[ 1798.044236]  ? rtnl_bridge_getlink+0x460/0x460
[ 1798.052034]  ? lockdep_hardirqs_on+0x250/0x250
[ 1798.059837]  ? match_held_lock+0x1b/0x240
[ 1798.067146]  ? find_held_lock+0xac/0xd0
[ 1798.074246]  netlink_rcv_skb+0xc6/0x1f0
[ 1798.081339]  ? rtnl_bridge_getlink+0x460/0x460
[ 1798.089104]  ? netlink_ack+0x440/0x440
[ 1798.096061]  netlink_unicast+0x2d4/0x3b0
[ 1798.103189]  ? netlink_attachskb+0x3f0/0x3f0
[ 1798.110724]  ? _copy_from_iter_full+0xda/0x370
[ 1798.118415]  netlink_sendmsg+0x3ba/0x6a0
[ 1798.125478]  ? netlink_unicast+0x3b0/0x3b0
[ 1798.132705]  ? netlink_unicast+0x3b0/0x3b0
[ 1798.139880]  sock_sendmsg+0x94/0xa0
[ 1798.146332]  ____sys_sendmsg+0x36c/0x3f0
[ 1798.153251]  ? copy_msghdr_from_user+0x165/0x230
[ 1798.160941]  ? kernel_sendmsg+0x30/0x30
[ 1798.167738]  ___sys_sendmsg+0xeb/0x150
[ 1798.174411]  ? sendmsg_copy_msghdr+0x30/0x30
[ 1798.181649]  ? lock_downgrade+0x350/0x350
[ 1798.188559]  ? rcu_read_lock_sched_held+0xd0/0xd0
[ 1798.196239]  ? __fget+0x21d/0x320
[ 1798.202335]  ? do_dup2+0x2a0/0x2a0
[ 1798.208499]  ? lock_downgrade+0x350/0x350
[ 1798.215366]  ? __fget_light+0xd6/0xf0
[ 1798.221808]  ? syscall_trace_enter+0x369/0x5d0
[ 1798.229112]  __sys_sendmsg+0xd3/0x160
[ 1798.235511]  ? __sys_sendmsg_sock+0x60/0x60
[ 1798.242478]  ? syscall_trace_enter+0x233/0x5d0
[ 1798.249721]  ? syscall_slow_exit_work+0x280/0x280
[ 1798.257211]  ? do_syscall_64+0x1e/0x2e0
[ 1798.263680]  do_syscall_64+0x72/0x2e0
[ 1798.269950]  entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: bd71b08ec2 ("net/mlx5: Support multiple updates of steering rules in parallel")
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-02-06 12:24:22 -08:00
Nathan Chancellor
91a7d4bf3e mlxsw: spectrum_qdisc: Fix 64-bit division error in mlxsw_sp_qdisc_tbf_rate_kbps
When building arm32 allmodconfig:

ERROR: "__aeabi_uldivmod"
[drivers/net/ethernet/mellanox/mlxsw/mlxsw_spectrum.ko] undefined!

rate_bytes_ps has type u64, we need to use a 64-bit division helper to
avoid a build error.

Fixes: a44f58c41b ("mlxsw: spectrum_qdisc: Support offloading of TBF Qdisc")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-01-31 08:52:41 -08:00
Christophe JAILLET
6dd4b4f393 mlxsw: minimal: Fix an error handling path in 'mlxsw_m_port_create()'
An 'alloc_etherdev()' called is not ballanced by a corresponding
'free_netdev()' call in one error handling path.

Slighly reorder the error handling code to catch the missed case.

Fixes: c100e47caa ("mlxsw: minimal: Add ethtool support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-27 11:13:53 +01:00
Jiri Pirko
d48834f9d4 mlx5: Use dev_net netdevice notifier registrations
Register the dev_net notifier and allow the per-net notifier to follow
the device into different namespace.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-27 11:03:44 +01:00
David S. Miller
4d8773b68e Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflict in mlx5 because changes happened to code that has
moved meanwhile.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-26 10:40:21 +01:00
Petr Machata
a44f58c41b mlxsw: spectrum_qdisc: Support offloading of TBF Qdisc
React to the TC messages that were introduced in a preceding patch and
configure egress maximum shaper as appropriate. TBF can be used as a root
qdisc or under one of PRIO or strict ETS bands.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
dbacf8ba58 mlxsw: spectrum: Configure shaper rate and burst size together
In order to allow configuration of burst size together with shaper rate,
extend mlxsw_sp_port_ets_maxrate_set() with a burst_size argument. Convert
call sites to pass 0 (for default).

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
47259544e0 mlxsw: spectrum: Add lowest_shaper_bs to struct mlxsw_sp
Lower limit of burst size configuration is dependent on system type. Add a
datum to track the value. Initialize as appropriate in mlxsw_spX_init().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
92afbfedb7 mlxsw: reg: Increase MLXSW_REG_QEEC_MAS_DIS
As the port speeds grow, the current value of "unlimited shaper",
200000000Kbps, might become lower than the actually supported speeds. Bump
it to the maximum value that fits in the corresponding QEEC field, which is
about 2.1Tbps.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
23effa2479 mlxsw: reg: Add max_shaper_bs to QoS ETS Element Configuration
The QEEC register configures scheduling elements. One of the bits of
configuration is the burst size to use for the shaper installed on the
element. Add the necessary fields to support this configuration.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
be1d5a8a77 mlxsw: spectrum_qdisc: Extract a common leaf unoffload function
When the RED Qdisc is unoffloaded, it needs to reduce the reported backlog
by the amount that is in the HW, so that only the SW backlog is contained
in the counter. The same thing will need to be done by TBF, and likely any
other leaf Qdisc as well.

Extract a helper mlxsw_sp_qdisc_leaf_unoffload() and call it from
mlxsw_sp_qdisc_red_unoffload().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
3d0d592193 mlxsw: spectrum_qdisc: Add mlxsw_sp_qdisc_get_class_stats()
Add a wrapper around mlxsw_sp_qdisc_collect_tc_stats() and
mlxsw_sp_qdisc_update_stats() for the simple case of doing both in one go:
mlxsw_sp_qdisc_get_class_stats(). Dispatch to that function from
mlxsw_sp_qdisc_get_red_stats(). This new function will be useful for other
leaf Qdiscs as well.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Petr Machata
cf9af379cd mlxsw: spectrum_qdisc: Extract a per-TC stat function
Extract from mlxsw_sp_qdisc_get_prio_stats() two new functions:
mlxsw_sp_qdisc_collect_tc_stats() to accumulate stats for that one TC only,
and mlxsw_sp_qdisc_update_stats() that makes the stats relative to base
values stored earlier. Use them from mlxsw_sp_qdisc_get_red_stats().

Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-25 10:56:31 +01:00
Tariq Toukan
342508c1c7 net/mlx5e: kTLS, Do not send decrypted-marked SKBs via non-accel path
When TCP out-of-order is identified (unexpected tcp seq mismatch), driver
analyzes the packet and decides what handling should it get:
1. go to accelerated path (to be encrypted in HW),
2. go to regular xmit path (send w/o encryption),
3. drop.

Packets marked with skb->decrypted by the TLS stack in the TX flow skips
SW encryption, and rely on the HW offload.
Verify that such packets are never sent un-encrypted on the wire.
Add a WARN to catch such bugs, and prefer dropping the packet in these cases.

Fixes: 46a3ea9807 ("net/mlx5e: kTLS, Enhance TX resync flow")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:40 -08:00
Tariq Toukan
1e92899791 net/mlx5e: kTLS, Remove redundant posts in TX resync flow
The call to tx_post_resync_params() is done earlier in the flow,
the post of the control WQEs is unnecessarily repeated. Remove it.

Fixes: 700ec49742 ("net/mlx5e: kTLS, Fix missing SQ edge fill")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:37 -08:00
Tariq Toukan
ffbd9ca94e net/mlx5e: kTLS, Fix corner-case checks in TX resync flow
There are the following cases:

1. Packet ends before start marker: bypass offload.
2. Packet starts before start marker and ends after it: drop,
   not supported, breaks contract with kernel.
3. packet ends before tls record info starts: drop,
   this packet was already acknowledged and its record info
   was released.

Add the above as comment in code.

Mind possible wraparounds of the TCP seq, replace the simple comparison
with a call to the TCP before() method.

In addition, remove logic that handles negative sync_len values,
as it became impossible.

Fixes: d2ead1f360 ("net/mlx5e: Add kTLS TX HW offload support")
Fixes: 46a3ea9807 ("net/mlx5e: kTLS, Enhance TX resync flow")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:35 -08:00
Dmytro Linkin
3b83b6c2e0 net/mlx5e: Clear VF config when switching modes
Currently VF in LEGACY mode are not able to go up. Also in OFFLOADS
mode, when switching to it first time, VF can go up independently to
his representor, which is not expected.
Perform clearing of VF config when switching modes and set link state
to AUTO as default value. Also, when switching to OFFLOADS mode set
link state to DOWN, which allow VF link state to be controlled by its
REP.

Fixes: 1ab2068a4c ("net/mlx5: Implement vports admin state backup/restore")
Fixes: 556b9d16d3 ("net/mlx5: Clear VF's configuration on disabling SRIOV")
Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:32 -08:00
Erez Shitrit
c0702a4bd4 net/mlx5: DR, use non preemptible call to get the current cpu number
Use raw_smp_processor_id instead of smp_processor_id() otherwise we will
get the following trace in debug-kernel:
	BUG: using smp_processor_id() in preemptible [00000000] code: devlink
	caller is dr_create_cq.constprop.2+0x31d/0x970 [mlx5_core]
	Call Trace:
	dump_stack+0x9a/0xf0
	debug_smp_processor_id+0x1f3/0x200
	dr_create_cq.constprop.2+0x31d/0x970
	genl_family_rcv_msg+0x5fd/0x1170
	genl_rcv_msg+0xb8/0x160
	netlink_rcv_skb+0x11e/0x340

Fixes: 297cccebdc ("net/mlx5: DR, Expose an internal API to issue RDMA operations")
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:29 -08:00
Eli Cohen
e401a1848b net/mlx5: E-Switch, Prevent ingress rate configuration of uplink rep
Since the implementation relies on limiting the VF transmit rate to
simulate ingress rate limiting, and since either uplink representor or
ecpf are not associated with a VF, we limit the rate limit configuration
for those ports.

Fixes: fcb64c0f56 ("net/mlx5: E-Switch, add ingress rate support")
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:27 -08:00
Erez Shitrit
b850a82114 net/mlx5: DR, Enable counter on non-fwd-dest objects
The current code handles only counters that attached to dest, we still
have the cases where we have counter on non-dest, like over drop etc.

Fixes: 6a48faeeca ("net/mlx5: Add direct rule fs_cmd implementation")
Signed-off-by: Hamdan Igbaria <hamdani@mellanox.com>
Signed-off-by: Erez Shitrit <erezsh@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:25 -08:00
Meir Lichtinger
505a7f5478 net/mlx5: Update the list of the PCI supported devices
Add the upcoming ConnectX-7 device ID.

Fixes: 85327a9c41 ("net/mlx5: Update the list of the PCI supported devices")
Signed-off-by: Meir Lichtinger <meirl@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:22 -08:00
Paul Blakey
93b8a7ecb7 net/mlx5: Fix lowest FDB pool size
The pool sizes represent the pool sizes in the fw. when we request
a pool size from fw, it will return the next possible group.
We track how many pools the fw has left and start requesting groups
from the big to the small.
When we start request 4k group, which doesn't exists in fw, fw
wants to allocate the next possible size, 64k, but will fail since
its exhausted. The correct smallest pool size in fw is 128 and not 4k.

Fixes: e52c280240 ("net/mlx5: E-Switch, Add chains and priorities")
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-24 12:04:20 -08:00
Ido Schimmel
971de2e572 mlxsw: spectrum_acl: Fix use-after-free during reload
During reload (or module unload), the router block is de-initialized.
Among other things, this results in the removal of a default multicast
route from each active virtual router (VRF). These default routes are
configured during initialization to trap packets to the CPU. In
Spectrum-2, unlike Spectrum-1, multicast routes are implemented using
ACL rules.

Since the router block is de-initialized before the ACL block, it is
possible that the ACL rules corresponding to the default routes are
deleted while being accessed by the ACL delayed work that queries rules'
activity from the device. This can result in a rare use-after-free [1].

Fix this by protecting the rules list accessed by the delayed work with
a lock. We cannot use a spinlock as the activity read operation is
blocking.

[1]
[  123.331662] ==================================================================
[  123.339920] BUG: KASAN: use-after-free in mlxsw_sp_acl_rule_activity_update_work+0x330/0x3b0
[  123.349381] Read of size 8 at addr ffff8881f3bb4520 by task kworker/0:2/78
[  123.357080]
[  123.358773] CPU: 0 PID: 78 Comm: kworker/0:2 Not tainted 5.5.0-rc5-custom-33108-gf5df95d3ef41 #2209
[  123.368898] Hardware name: Mellanox Technologies Ltd. MSN3700C/VMOD0008, BIOS 5.11 10/10/2018
[  123.378456] Workqueue: mlxsw_core mlxsw_sp_acl_rule_activity_update_work
[  123.385970] Call Trace:
[  123.388734]  dump_stack+0xc6/0x11e
[  123.392568]  print_address_description.constprop.4+0x21/0x340
[  123.403236]  __kasan_report.cold.8+0x76/0xb1
[  123.414884]  kasan_report+0xe/0x20
[  123.418716]  mlxsw_sp_acl_rule_activity_update_work+0x330/0x3b0
[  123.444034]  process_one_work+0xb06/0x19a0
[  123.453731]  worker_thread+0x91/0xe90
[  123.467348]  kthread+0x348/0x410
[  123.476847]  ret_from_fork+0x24/0x30
[  123.480863]
[  123.482545] Allocated by task 73:
[  123.486273]  save_stack+0x19/0x80
[  123.490000]  __kasan_kmalloc.constprop.6+0xc1/0xd0
[  123.495379]  mlxsw_sp_acl_rule_create+0xa7/0x230
[  123.500566]  mlxsw_sp2_mr_tcam_route_create+0xf6/0x3e0
[  123.506334]  mlxsw_sp_mr_tcam_route_create+0x5b4/0x820
[  123.512102]  mlxsw_sp_mr_table_create+0x3b5/0x690
[  123.517389]  mlxsw_sp_vr_get+0x289/0x4d0
[  123.521797]  mlxsw_sp_fib_node_get+0xa2/0x990
[  123.526692]  mlxsw_sp_router_fib4_event_work+0x54c/0x2d60
[  123.532752]  process_one_work+0xb06/0x19a0
[  123.537352]  worker_thread+0x91/0xe90
[  123.541471]  kthread+0x348/0x410
[  123.545103]  ret_from_fork+0x24/0x30
[  123.549113]
[  123.550795] Freed by task 518:
[  123.554231]  save_stack+0x19/0x80
[  123.557958]  __kasan_slab_free+0x125/0x170
[  123.562556]  kfree+0xd7/0x3a0
[  123.565895]  mlxsw_sp_acl_rule_destroy+0x63/0xd0
[  123.571081]  mlxsw_sp2_mr_tcam_route_destroy+0xd5/0x130
[  123.576946]  mlxsw_sp_mr_tcam_route_destroy+0xba/0x260
[  123.582714]  mlxsw_sp_mr_table_destroy+0x1ab/0x290
[  123.588091]  mlxsw_sp_vr_put+0x1db/0x350
[  123.592496]  mlxsw_sp_fib_node_put+0x298/0x4c0
[  123.597486]  mlxsw_sp_vr_fib_flush+0x15b/0x360
[  123.602476]  mlxsw_sp_router_fib_flush+0xba/0x470
[  123.607756]  mlxsw_sp_vrs_fini+0xaa/0x120
[  123.612260]  mlxsw_sp_router_fini+0x137/0x384
[  123.617152]  mlxsw_sp_fini+0x30a/0x4a0
[  123.621374]  mlxsw_core_bus_device_unregister+0x159/0x600
[  123.627435]  mlxsw_devlink_core_bus_device_reload_down+0x7e/0xb0
[  123.634176]  devlink_reload+0xb4/0x380
[  123.638391]  devlink_nl_cmd_reload+0x610/0x700
[  123.643382]  genl_rcv_msg+0x6a8/0xdc0
[  123.647497]  netlink_rcv_skb+0x134/0x3a0
[  123.651904]  genl_rcv+0x29/0x40
[  123.655436]  netlink_unicast+0x4d4/0x700
[  123.659843]  netlink_sendmsg+0x7c0/0xc70
[  123.664251]  __sys_sendto+0x265/0x3c0
[  123.668367]  __x64_sys_sendto+0xe2/0x1b0
[  123.672773]  do_syscall_64+0xa0/0x530
[  123.676892]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[  123.682552]
[  123.684238] The buggy address belongs to the object at ffff8881f3bb4500
[  123.684238]  which belongs to the cache kmalloc-128 of size 128
[  123.698261] The buggy address is located 32 bytes inside of
[  123.698261]  128-byte region [ffff8881f3bb4500, ffff8881f3bb4580)
[  123.711303] The buggy address belongs to the page:
[  123.716682] page:ffffea0007ceed00 refcount:1 mapcount:0 mapping:ffff888236403500 index:0x0
[  123.725958] raw: 0200000000000200 dead000000000100 dead000000000122 ffff888236403500
[  123.734646] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[  123.743315] page dumped because: kasan: bad access detected
[  123.749562]
[  123.751241] Memory state around the buggy address:
[  123.756620]  ffff8881f3bb4400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[  123.764716]  ffff8881f3bb4480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  123.772812] >ffff8881f3bb4500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  123.780904]                                ^
[  123.785697]  ffff8881f3bb4580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[  123.793793]  ffff8881f3bb4600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[  123.801883] ==================================================================

Fixes: cf7221a4f5 ("mlxsw: spectrum_router: Add Multicast routing support for Spectrum-2")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-23 11:32:57 +01:00
Vlad Buslov
7c453526dc net/mlx5e: Enable all available stats for uplink reps
Extend stats group array of uplink representor with all stats that are
available for PF in legacy mode, besides ipsec and TLS which are not
supported.

Don't output vport stats for uplink representor because they are already
handled by 802_3 group (with different names: {tx|rx}_{bytes|packets}_phy).

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:30:12 -08:00
Vlad Buslov
8520fa57a4 net/mlx5e: Create q counters on uplink representors
Q counters were disabled for all types of representors to prevent an issue
where there is not enough resources to init q counters for 127 representor
instances. Enable q counters only for uplink representors to support
"rx_out_of_buffer", "rx_if_down_packets" counters in ethtool.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:30:12 -08:00
Vlad Buslov
8a236b1514 net/mlx5e: Convert rep stats to mlx5e_stats_grp-based infra
In order to support all of the supported stats that are available in legacy
mode for switchdev uplink representors, convert rep stats infrastructure to
reuse struct mlx5e_stats_grp that is already used when device is in legacy
mode. Refactor rep code to use array of mlx5e_stats_grp
structures (constructed using macros provided by stats infra) to
fill/update stats, instead of fixed hardcoded set of values. This approach
allows to easily extend representors with new stats types.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:30:12 -08:00
Saeed Mahameed
2a303f13f9 net/mlx5e: IPoIB, use separate stats groups
Don't copy all of the stats groups used for mlx5e ethernet NIC profile,
have a separate stats groups for IPoIB with the set of the needed stats
only.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:30:07 -08:00
Saeed Mahameed
f0ff8e8c72 net/mlx5e: Convert stats groups array to array of group pointers
Convert stats groups array to array of "stats group" pointers to allow
sharing and individual selection of groups per profile as illustrated in
the next patches.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
2020-01-22 22:30:01 -08:00
Saeed Mahameed
96b1279655 net/mlx5e: Declare stats groups via macro
Introduce new macros to declare stats callbacks and groups, for better
code reuse and for individual groups selection per profile which will be
introduced in next patches.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
2020-01-22 22:29:55 -08:00
Saeed Mahameed
3460c184df net/mlx5e: Profile specific stats groups
Attach stats groups array to the profiles and make the stats utility
functions (get_num, update, fill, fill_strings) generic and use the
profile->stats_grps rather the hardcoded NIC stats groups.

This will allow future extension to have per profile stats groups.

In this patch mlx5e NIC and IPoIB will still share the same stats
groups.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
2020-01-22 22:29:49 -08:00
Roi Dayan
29b598ddb8 net/mlx5e: Move uplink rep init/cleanup code into own functions
Clean up the code and allows to call uplink rep init/cleanup
from different location later.
To be used later for a new uplink representor mode.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Eli Britstein <elibr@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:40 -08:00
Yevgeny Kliteynik
4c7cea2f31 net/mlx5: DR, Allow connecting flow table to a lower/same level table
Allow connecting SW steering source table to a lower/same level
destination table.
Lifting this limitation is required to support Connection Tracking.

Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:37 -08:00
Hamdan Igbaria
c21a49b360 net/mlx5: DR, Modify header copy support
Modify header supports ADD/SET and from this patch
also COPY. Copy allows to copy header fields and
metadata.

Signed-off-by: Hamdan Igbaria <hamdani@mellanox.com>
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:34 -08:00
Hamdan Igbaria
a51dcc10a0 net/mlx5: DR, Modify set action limitation extension
Modify set actions are not supported on both tx
and rx, added a check for that.
Also refactored the code in a way that every modify
action has his own functions, this needed so in the
future we could add copy action more smoothly.

Signed-off-by: Hamdan Igbaria <hamdani@mellanox.com>
Signed-off-by: Alex Vesker <valex@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:32 -08:00
wenxu
6d65bc64e2 net/mlx5e: Add mlx5e_flower_parse_meta support
In the flowtables offload all the devices in the flowtables
share the same flow_block. An offload rule will be installed on
all the devices. This scenario is not correct.

It is no problem if there are only two devices in the flowtable,
The rule with ingress and egress on the same device can be reject
by driver.

But more than two devices in the flowtable will install the wrong
rules on hardware.

For example:
Three devices in a offload flowtables: dev_a, dev_b, dev_c

A rule ingress from dev_a and egress to dev_b:
The rule will install on device dev_a.
The rule will try to install on dev_b but failed for ingress
and egress on the same device.
The rule will install on dev_c. This is not correct.

The flowtables offload avoid this case through restricting the ingress dev
with FLOW_DISSECTOR_KEY_META.

So the mlx5e driver also should support the FLOW_DISSECTOR_KEY_META parse.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Acked-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:29 -08:00
Chen Wandun
e15cf98ee8 net/mlx5: make the symbol 'ESW_POOLS' static
Fix the following sparse warning:
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads_chains.c:35:20: warning: symbol 'ESW_POOLS' was not declared. Should it be static?

Fixes: 39ac237ce0 ("net/mlx5: E-Switch, Refactor chains and priorities")
Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Acked-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:26 -08:00
Davide Caratti
a1718505d7 net/mlx5e: allow TSO on VXLAN over VLAN topologies
since mlx5 hardware can segment correctly TSO packets on VXLAN over VLAN
topologies, CPU usage can improve significantly if we enable tunnel
offloads in dev->vlan_features, like it was done in the past with other
NIC drivers (e.g. mlx4, be2net and ixgbe).

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:23 -08:00
Olof Johansson
ca9c74ae9b net/mlx5e: Fix printk format warning
Use "%zu" for size_t. Seen on ARM allmodconfig:

drivers/net/ethernet/mellanox/mlx5/core/wq.c: In function 'mlx5_wq_cyc_wqe_dump':
include/linux/kern_levels.h:5:18: warning: format '%ld' expects argument of type 'long int', but argument 5 has type 'size_t' {aka 'unsigned int'} [-Wformat=]

Fixes: 130c7b46c9 ("net/mlx5e: TX, Dump WQs wqe descriptors on CQE with error events")
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2020-01-22 22:28:20 -08:00
Jiri Pirko
3a3e627ce0 spectrum: Add a delayed work to update SPAN buffsize according to speed
When PUDE event is handled and the link is up, update the port SPAN
buffer size according to the current speed.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-20 13:25:46 +01:00
Jiri Pirko
ff9fdfec5f mlxsw: spectrum: Fix SPAN egress mirroring buffer size for Spectrum-2
For SPAN egress mirroring buffer size, it is needed to use a different
formula for Spectrum and Spectrum-2. Move the buffer size computation to
ops and implement new formula for Spectrum-2.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-20 13:25:46 +01:00
Jiri Pirko
31c25b9498 mlxsw: spectrum_span: Put buffsize update code into helper function
Avoid duplication of code that is doing buffsize update and put it into
a separate helper function.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-20 13:25:46 +01:00
Jiri Pirko
ac9cc4e250 mlxsw: spectrum: Push code getting port speed into a helper
Currently PTP code queries directly PTYS register for port speed from
work scheduled upon PUDE event. Since the speed needs to be used for
SPAN buffer size computation as well, push the code into a separate
helper.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-01-20 13:25:45 +01:00