[pull request][net V3 00/15] mlx5 fixes 2023-12-05

[pull request][net V3 00/15] mlx5 fixes 2023-12-05

[Saeed Mahameed]

From: Saeed Mahameed <saeedm@nvidia.com>

This series provides bug fixes to mlx5 driver.

V2->V3:
  - Drop commit #8 as requested by Jianbo.
  - Added two commits from Rahul to fix snprintf return val

V1->V2:
  - Drop commit #9 ("net/mlx5e: Forbid devlink reload if IPSec rules are
    offloaded"), we are working on a better fix

Please pull and let me know if there is any problem.

Thanks,
Saeed.



The following changes since commit 3c91c909f13f0c32b0d54d75c3f798479b1a84f5:

  octeontx2-af: fix a use-after-free in rvu_npa_register_reporters (2023-12-05 15:39:13 +0100)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git tags/mlx5-fixes-2023-12-05

for you to fetch changes up to 1b6c74c73e3ba05dbba2dedf6703f025563231d0:

  net/mlx5e: Correct snprintf truncation handling for fw_version buffer used by representors (2023-12-05 13:43:01 -0800)

----------------------------------------------------------------
mlx5-fixes-2023-12-05

----------------------------------------------------------------
Chris Mi (2):
      net/mlx5e: Disable IPsec offload support if not FW steering
      net/mlx5e: TC, Don't offload post action rule if not supported

Dan Carpenter (1):
      net/mlx5: Fix a NULL vs IS_ERR() check

Gavin Li (1):
      net/mlx5e: Check netdev pointer before checking its net ns

Jianbo Liu (1):
      net/mlx5e: Reduce eswitch mode_lock protection context

Leon Romanovsky (4):
      net/mlx5e: Honor user choice of IPsec replay window size
      net/mlx5e: Ensure that IPsec sequence packet number starts from 1
      net/mlx5e: Remove exposure of IPsec RX flow steering struct
      net/mlx5e: Tidy up IPsec NAT-T SA discovery

Moshe Shemesh (2):
      net/mlx5e: Fix possible deadlock on mlx5e_tx_timeout_work
      net/mlx5: Nack sync reset request when HotPlug is enabled

Patrisious Haddad (2):
      net/mlx5e: Unify esw and normal IPsec status table creation/destruction
      net/mlx5e: Add IPsec and ASO syndromes check in HW

Rahul Rameshbabu (2):
      net/mlx5e: Correct snprintf truncation handling for fw_version buffer
      net/mlx5e: Correct snprintf truncation handling for fw_version buffer used by representors

 drivers/net/ethernet/mellanox/mlx5/core/en.h       |   1 +
 .../ethernet/mellanox/mlx5/core/en/tc/post_act.c   |   6 +
 .../ethernet/mellanox/mlx5/core/en_accel/ipsec.c   |  56 ++-
 .../ethernet/mellanox/mlx5/core/en_accel/ipsec.h   |  22 +-
 .../mellanox/mlx5/core/en_accel/ipsec_fs.c         | 441 ++++++++++++++++++---
 .../mellanox/mlx5/core/en_accel/ipsec_offload.c    |  10 +-
 .../net/ethernet/mellanox/mlx5/core/en_ethtool.c   |   2 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c  |  27 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c   |   4 +-
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c    |  25 +-
 .../net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c | 160 +-------
 .../net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.h |  15 -
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.c  |  35 +-
 drivers/net/ethernet/mellanox/mlx5/core/eswitch.h  |   2 +
 .../ethernet/mellanox/mlx5/core/eswitch_offloads.c |  54 ++-
 drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c |  29 ++
 include/linux/mlx5/mlx5_ifc.h                      |   9 +-
 17 files changed, 587 insertions(+), 311 deletions(-)

[net V3 01/15] net/mlx5e: Honor user choice of IPsec replay window size

[Saeed Mahameed]

From: Leon Romanovsky <leonro@nvidia.com>

Users can configure IPsec replay window size, but mlx5 driver didn't
honor their choice and set always 32bits. Fix assignment logic to
configure right size from the beginning.

Fixes: 7db21ef4566e ("net/mlx5e: Set IPsec replay sequence numbers")
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 21 +++++++++++++++++++
 .../mlx5/core/en_accel/ipsec_offload.c        |  2 +-
 include/linux/mlx5/mlx5_ifc.h                 |  7 +++++++
 3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 655496598c68..4028932d93ce 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -335,6 +335,27 @@ void mlx5e_ipsec_build_accel_xfrm_attrs(struct mlx5e_ipsec_sa_entry *sa_entry,
 		attrs->replay_esn.esn = sa_entry->esn_state.esn;
 		attrs->replay_esn.esn_msb = sa_entry->esn_state.esn_msb;
 		attrs->replay_esn.overlap = sa_entry->esn_state.overlap;
+		switch (x->replay_esn->replay_window) {
+		case 32:
+			attrs->replay_esn.replay_window =
+				MLX5_IPSEC_ASO_REPLAY_WIN_32BIT;
+			break;
+		case 64:
+			attrs->replay_esn.replay_window =
+				MLX5_IPSEC_ASO_REPLAY_WIN_64BIT;
+			break;
+		case 128:
+			attrs->replay_esn.replay_window =
+				MLX5_IPSEC_ASO_REPLAY_WIN_128BIT;
+			break;
+		case 256:
+			attrs->replay_esn.replay_window =
+				MLX5_IPSEC_ASO_REPLAY_WIN_256BIT;
+			break;
+		default:
+			WARN_ON(true);
+			return;
+		}
 	}
 
 	attrs->dir = x->xso.dir;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
index a91f772dc981..4e018fba2d5f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
@@ -95,7 +95,7 @@ static void mlx5e_ipsec_packet_setup(void *obj, u32 pdn,
 
 		if (attrs->dir == XFRM_DEV_OFFLOAD_IN) {
 			MLX5_SET(ipsec_aso, aso_ctx, window_sz,
-				 attrs->replay_esn.replay_window / 64);
+				 attrs->replay_esn.replay_window);
 			MLX5_SET(ipsec_aso, aso_ctx, mode,
 				 MLX5_IPSEC_ASO_REPLAY_PROTECTION);
 		}
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 6f3631425f38..90ca63f4bf63 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -12001,6 +12001,13 @@ enum {
 	MLX5_IPSEC_ASO_INC_SN            = 0x2,
 };
 
+enum {
+	MLX5_IPSEC_ASO_REPLAY_WIN_32BIT  = 0x0,
+	MLX5_IPSEC_ASO_REPLAY_WIN_64BIT  = 0x1,
+	MLX5_IPSEC_ASO_REPLAY_WIN_128BIT = 0x2,
+	MLX5_IPSEC_ASO_REPLAY_WIN_256BIT = 0x3,
+};
+
 struct mlx5_ifc_ipsec_aso_bits {
 	u8         valid[0x1];
 	u8         reserved_at_201[0x1];
-- 
2.43.0

[net V3 02/15] net/mlx5e: Ensure that IPsec sequence packet number starts from 1

[Saeed Mahameed]

From: Leon Romanovsky <leonro@nvidia.com>

According to RFC4303, section "3.3.3. Sequence Number Generation",
the first packet sent using a given SA will contain a sequence
number of 1.

However if user didn't set seq/oseq, the HW used zero as first sequence
packet number. Such misconfiguration causes to drop of first packet
if replay window protection was enabled in SA.

To fix it, set sequence number to be at least 1.

Fixes: 7db21ef4566e ("net/mlx5e: Set IPsec replay sequence numbers")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 4028932d93ce..914b9e6eb7db 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -121,7 +121,14 @@ static bool mlx5e_ipsec_update_esn_state(struct mlx5e_ipsec_sa_entry *sa_entry)
 	if (x->xso.type == XFRM_DEV_OFFLOAD_CRYPTO)
 		esn_msb = xfrm_replay_seqhi(x, htonl(seq_bottom));
 
-	sa_entry->esn_state.esn = esn;
+	if (sa_entry->esn_state.esn_msb)
+		sa_entry->esn_state.esn = esn;
+	else
+		/* According to RFC4303, section "3.3.3. Sequence Number Generation",
+		 * the first packet sent using a given SA will contain a sequence
+		 * number of 1.
+		 */
+		sa_entry->esn_state.esn = max_t(u32, esn, 1);
 	sa_entry->esn_state.esn_msb = esn_msb;
 
 	if (unlikely(overlap && seq_bottom < MLX5E_IPSEC_ESN_SCOPE_MID)) {
-- 
2.43.0

[net V3 03/15] net/mlx5e: Unify esw and normal IPsec status table creation/destruction

[Saeed Mahameed]

From: Patrisious Haddad <phaddad@nvidia.com>

Change normal IPsec flow to use the same creation/destruction functions
for status flow table as that of ESW, which first of all refines the
code to have less code duplication.

And more importantly, the ESW status table handles IPsec syndrome
checks at steering by HW, which is more efficient than the previous
behaviour we had where it was copied to WQE meta data and checked
by the driver.

Fixes: 1762f132d542 ("net/mlx5e: Support IPsec packet offload for RX in switchdev mode")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec_fs.c    | 187 +++++++++++++-----
 .../mellanox/mlx5/core/esw/ipsec_fs.c         | 152 --------------
 .../mellanox/mlx5/core/esw/ipsec_fs.h         |  15 --
 3 files changed, 141 insertions(+), 213 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
index f41c976dc33f..85ed5171e835 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
@@ -128,63 +128,166 @@ static struct mlx5_flow_table *ipsec_ft_create(struct mlx5_flow_namespace *ns,
 	return mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
 }
 
-static int ipsec_status_rule(struct mlx5_core_dev *mdev,
-			     struct mlx5e_ipsec_rx *rx,
-			     struct mlx5_flow_destination *dest)
+static void ipsec_rx_status_drop_destroy(struct mlx5e_ipsec *ipsec,
+					 struct mlx5e_ipsec_rx *rx)
 {
-	u8 action[MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)] = {};
+	mlx5_del_flow_rules(rx->status_drop.rule);
+	mlx5_destroy_flow_group(rx->status_drop.group);
+	mlx5_fc_destroy(ipsec->mdev, rx->status_drop_cnt);
+}
+
+static void ipsec_rx_status_pass_destroy(struct mlx5e_ipsec *ipsec,
+					 struct mlx5e_ipsec_rx *rx)
+{
+	mlx5_del_flow_rules(rx->status.rule);
+
+	if (rx != ipsec->rx_esw)
+		return;
+
+#ifdef CONFIG_MLX5_ESWITCH
+	mlx5_chains_put_table(esw_chains(ipsec->mdev->priv.eswitch), 0, 1, 0);
+#endif
+}
+
+static int ipsec_rx_status_drop_create(struct mlx5e_ipsec *ipsec,
+				       struct mlx5e_ipsec_rx *rx)
+{
+	int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
+	struct mlx5_flow_table *ft = rx->ft.status;
+	struct mlx5_core_dev *mdev = ipsec->mdev;
+	struct mlx5_flow_destination dest = {};
 	struct mlx5_flow_act flow_act = {};
-	struct mlx5_modify_hdr *modify_hdr;
-	struct mlx5_flow_handle *fte;
+	struct mlx5_flow_handle *rule;
+	struct mlx5_fc *flow_counter;
 	struct mlx5_flow_spec *spec;
-	int err;
+	struct mlx5_flow_group *g;
+	u32 *flow_group_in;
+	int err = 0;
 
+	flow_group_in = kvzalloc(inlen, GFP_KERNEL);
 	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
-	if (!spec)
-		return -ENOMEM;
+	if (!flow_group_in || !spec) {
+		err = -ENOMEM;
+		goto err_out;
+	}
 
-	/* Action to copy 7 bit ipsec_syndrome to regB[24:30] */
-	MLX5_SET(copy_action_in, action, action_type, MLX5_ACTION_TYPE_COPY);
-	MLX5_SET(copy_action_in, action, src_field, MLX5_ACTION_IN_FIELD_IPSEC_SYNDROME);
-	MLX5_SET(copy_action_in, action, src_offset, 0);
-	MLX5_SET(copy_action_in, action, length, 7);
-	MLX5_SET(copy_action_in, action, dst_field, MLX5_ACTION_IN_FIELD_METADATA_REG_B);
-	MLX5_SET(copy_action_in, action, dst_offset, 24);
+	MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, ft->max_fte - 1);
+	MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, ft->max_fte - 1);
+	g = mlx5_create_flow_group(ft, flow_group_in);
+	if (IS_ERR(g)) {
+		err = PTR_ERR(g);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop flow group, err=%d\n", err);
+		goto err_out;
+	}
 
-	modify_hdr = mlx5_modify_header_alloc(mdev, MLX5_FLOW_NAMESPACE_KERNEL,
-					      1, action);
+	flow_counter = mlx5_fc_create(mdev, false);
+	if (IS_ERR(flow_counter)) {
+		err = PTR_ERR(flow_counter);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule counter, err=%d\n", err);
+		goto err_cnt;
+	}
 
-	if (IS_ERR(modify_hdr)) {
-		err = PTR_ERR(modify_hdr);
+	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT;
+	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
+	dest.counter_id = mlx5_fc_id(flow_counter);
+	if (rx == ipsec->rx_esw)
+		spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
+	rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
+	if (IS_ERR(rule)) {
+		err = PTR_ERR(rule);
 		mlx5_core_err(mdev,
-			      "fail to alloc ipsec copy modify_header_id err=%d\n", err);
-		goto out_spec;
+			      "Failed to add ipsec rx status drop rule, err=%d\n", err);
+		goto err_rule;
 	}
 
-	/* create fte */
-	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
-			  MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
+	rx->status_drop.group = g;
+	rx->status_drop.rule = rule;
+	rx->status_drop_cnt = flow_counter;
+
+	kvfree(flow_group_in);
+	kvfree(spec);
+	return 0;
+
+err_rule:
+	mlx5_fc_destroy(mdev, flow_counter);
+err_cnt:
+	mlx5_destroy_flow_group(g);
+err_out:
+	kvfree(flow_group_in);
+	kvfree(spec);
+	return err;
+}
+
+static int ipsec_rx_status_pass_create(struct mlx5e_ipsec *ipsec,
+				       struct mlx5e_ipsec_rx *rx,
+				       struct mlx5_flow_destination *dest)
+{
+	struct mlx5_flow_act flow_act = {};
+	struct mlx5_flow_handle *rule;
+	struct mlx5_flow_spec *spec;
+	int err;
+
+	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+	if (!spec)
+		return -ENOMEM;
+
+	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
+			 misc_parameters_2.ipsec_syndrome);
+	MLX5_SET(fte_match_param, spec->match_value,
+		 misc_parameters_2.ipsec_syndrome, 0);
+	if (rx == ipsec->rx_esw)
+		spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
+	spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
+	flow_act.flags = FLOW_ACT_NO_APPEND;
+	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
 			  MLX5_FLOW_CONTEXT_ACTION_COUNT;
-	flow_act.modify_hdr = modify_hdr;
-	fte = mlx5_add_flow_rules(rx->ft.status, spec, &flow_act, dest, 2);
-	if (IS_ERR(fte)) {
-		err = PTR_ERR(fte);
-		mlx5_core_err(mdev, "fail to add ipsec rx err copy rule err=%d\n", err);
-		goto out;
+	rule = mlx5_add_flow_rules(rx->ft.status, spec, &flow_act, dest, 2);
+	if (IS_ERR(rule)) {
+		err = PTR_ERR(rule);
+		mlx5_core_warn(ipsec->mdev,
+			       "Failed to add ipsec rx status pass rule, err=%d\n", err);
+		goto err_rule;
 	}
 
+	rx->status.rule = rule;
 	kvfree(spec);
-	rx->status.rule = fte;
-	rx->status.modify_hdr = modify_hdr;
 	return 0;
 
-out:
-	mlx5_modify_header_dealloc(mdev, modify_hdr);
-out_spec:
+err_rule:
 	kvfree(spec);
 	return err;
 }
 
+static void mlx5_ipsec_rx_status_destroy(struct mlx5e_ipsec *ipsec,
+					 struct mlx5e_ipsec_rx *rx)
+{
+	ipsec_rx_status_pass_destroy(ipsec, rx);
+	ipsec_rx_status_drop_destroy(ipsec, rx);
+}
+
+static int mlx5_ipsec_rx_status_create(struct mlx5e_ipsec *ipsec,
+				       struct mlx5e_ipsec_rx *rx,
+				       struct mlx5_flow_destination *dest)
+{
+	int err;
+
+	err = ipsec_rx_status_drop_create(ipsec, rx);
+	if (err)
+		return err;
+
+	err = ipsec_rx_status_pass_create(ipsec, rx, dest);
+	if (err)
+		goto err_pass_create;
+
+	return 0;
+
+err_pass_create:
+	ipsec_rx_status_drop_destroy(ipsec, rx);
+	return err;
+}
+
 static int ipsec_miss_create(struct mlx5_core_dev *mdev,
 			     struct mlx5_flow_table *ft,
 			     struct mlx5e_ipsec_miss *miss,
@@ -333,12 +436,7 @@ static void rx_destroy(struct mlx5_core_dev *mdev, struct mlx5e_ipsec *ipsec,
 	mlx5_destroy_flow_table(rx->ft.sa);
 	if (rx->allow_tunnel_mode)
 		mlx5_eswitch_unblock_encap(mdev);
-	if (rx == ipsec->rx_esw) {
-		mlx5_esw_ipsec_rx_status_destroy(ipsec, rx);
-	} else {
-		mlx5_del_flow_rules(rx->status.rule);
-		mlx5_modify_header_dealloc(mdev, rx->status.modify_hdr);
-	}
+	mlx5_ipsec_rx_status_destroy(ipsec, rx);
 	mlx5_destroy_flow_table(rx->ft.status);
 
 	mlx5_ipsec_fs_roce_rx_destroy(ipsec->roce, family, mdev);
@@ -428,10 +526,7 @@ static int rx_create(struct mlx5_core_dev *mdev, struct mlx5e_ipsec *ipsec,
 
 	dest[1].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
 	dest[1].counter_id = mlx5_fc_id(rx->fc->cnt);
-	if (rx == ipsec->rx_esw)
-		err = mlx5_esw_ipsec_rx_status_create(ipsec, rx, dest);
-	else
-		err = ipsec_status_rule(mdev, rx, dest);
+	err = mlx5_ipsec_rx_status_create(ipsec, rx, dest);
 	if (err)
 		goto err_add;
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c
index 095f31f380fa..13b5916b64e2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c
@@ -21,158 +21,6 @@ enum {
 	MLX5_ESW_IPSEC_TX_ESP_FT_CNT_LEVEL,
 };
 
-static void esw_ipsec_rx_status_drop_destroy(struct mlx5e_ipsec *ipsec,
-					     struct mlx5e_ipsec_rx *rx)
-{
-	mlx5_del_flow_rules(rx->status_drop.rule);
-	mlx5_destroy_flow_group(rx->status_drop.group);
-	mlx5_fc_destroy(ipsec->mdev, rx->status_drop_cnt);
-}
-
-static void esw_ipsec_rx_status_pass_destroy(struct mlx5e_ipsec *ipsec,
-					     struct mlx5e_ipsec_rx *rx)
-{
-	mlx5_del_flow_rules(rx->status.rule);
-	mlx5_chains_put_table(esw_chains(ipsec->mdev->priv.eswitch), 0, 1, 0);
-}
-
-static int esw_ipsec_rx_status_drop_create(struct mlx5e_ipsec *ipsec,
-					   struct mlx5e_ipsec_rx *rx)
-{
-	int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
-	struct mlx5_flow_table *ft = rx->ft.status;
-	struct mlx5_core_dev *mdev = ipsec->mdev;
-	struct mlx5_flow_destination dest = {};
-	struct mlx5_flow_act flow_act = {};
-	struct mlx5_flow_handle *rule;
-	struct mlx5_fc *flow_counter;
-	struct mlx5_flow_spec *spec;
-	struct mlx5_flow_group *g;
-	u32 *flow_group_in;
-	int err = 0;
-
-	flow_group_in = kvzalloc(inlen, GFP_KERNEL);
-	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
-	if (!flow_group_in || !spec) {
-		err = -ENOMEM;
-		goto err_out;
-	}
-
-	MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, ft->max_fte - 1);
-	MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, ft->max_fte - 1);
-	g = mlx5_create_flow_group(ft, flow_group_in);
-	if (IS_ERR(g)) {
-		err = PTR_ERR(g);
-		mlx5_core_err(mdev,
-			      "Failed to add ipsec rx status drop flow group, err=%d\n", err);
-		goto err_out;
-	}
-
-	flow_counter = mlx5_fc_create(mdev, false);
-	if (IS_ERR(flow_counter)) {
-		err = PTR_ERR(flow_counter);
-		mlx5_core_err(mdev,
-			      "Failed to add ipsec rx status drop rule counter, err=%d\n", err);
-		goto err_cnt;
-	}
-
-	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT;
-	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
-	dest.counter_id = mlx5_fc_id(flow_counter);
-	spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
-	rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
-	if (IS_ERR(rule)) {
-		err = PTR_ERR(rule);
-		mlx5_core_err(mdev,
-			      "Failed to add ipsec rx status drop rule, err=%d\n", err);
-		goto err_rule;
-	}
-
-	rx->status_drop.group = g;
-	rx->status_drop.rule = rule;
-	rx->status_drop_cnt = flow_counter;
-
-	kvfree(flow_group_in);
-	kvfree(spec);
-	return 0;
-
-err_rule:
-	mlx5_fc_destroy(mdev, flow_counter);
-err_cnt:
-	mlx5_destroy_flow_group(g);
-err_out:
-	kvfree(flow_group_in);
-	kvfree(spec);
-	return err;
-}
-
-static int esw_ipsec_rx_status_pass_create(struct mlx5e_ipsec *ipsec,
-					   struct mlx5e_ipsec_rx *rx,
-					   struct mlx5_flow_destination *dest)
-{
-	struct mlx5_flow_act flow_act = {};
-	struct mlx5_flow_handle *rule;
-	struct mlx5_flow_spec *spec;
-	int err;
-
-	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
-	if (!spec)
-		return -ENOMEM;
-
-	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
-			 misc_parameters_2.ipsec_syndrome);
-	MLX5_SET(fte_match_param, spec->match_value,
-		 misc_parameters_2.ipsec_syndrome, 0);
-	spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
-	spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
-	flow_act.flags = FLOW_ACT_NO_APPEND;
-	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
-			  MLX5_FLOW_CONTEXT_ACTION_COUNT;
-	rule = mlx5_add_flow_rules(rx->ft.status, spec, &flow_act, dest, 2);
-	if (IS_ERR(rule)) {
-		err = PTR_ERR(rule);
-		mlx5_core_warn(ipsec->mdev,
-			       "Failed to add ipsec rx status pass rule, err=%d\n", err);
-		goto err_rule;
-	}
-
-	rx->status.rule = rule;
-	kvfree(spec);
-	return 0;
-
-err_rule:
-	kvfree(spec);
-	return err;
-}
-
-void mlx5_esw_ipsec_rx_status_destroy(struct mlx5e_ipsec *ipsec,
-				      struct mlx5e_ipsec_rx *rx)
-{
-	esw_ipsec_rx_status_pass_destroy(ipsec, rx);
-	esw_ipsec_rx_status_drop_destroy(ipsec, rx);
-}
-
-int mlx5_esw_ipsec_rx_status_create(struct mlx5e_ipsec *ipsec,
-				    struct mlx5e_ipsec_rx *rx,
-				    struct mlx5_flow_destination *dest)
-{
-	int err;
-
-	err = esw_ipsec_rx_status_drop_create(ipsec, rx);
-	if (err)
-		return err;
-
-	err = esw_ipsec_rx_status_pass_create(ipsec, rx, dest);
-	if (err)
-		goto err_pass_create;
-
-	return 0;
-
-err_pass_create:
-	esw_ipsec_rx_status_drop_destroy(ipsec, rx);
-	return err;
-}
-
 void mlx5_esw_ipsec_rx_create_attr_set(struct mlx5e_ipsec *ipsec,
 				       struct mlx5e_ipsec_rx_create_attr *attr)
 {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.h b/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.h
index 0c90f7a8b0d3..ac9c65b89166 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.h
@@ -8,11 +8,6 @@ struct mlx5e_ipsec;
 struct mlx5e_ipsec_sa_entry;
 
 #ifdef CONFIG_MLX5_ESWITCH
-void mlx5_esw_ipsec_rx_status_destroy(struct mlx5e_ipsec *ipsec,
-				      struct mlx5e_ipsec_rx *rx);
-int mlx5_esw_ipsec_rx_status_create(struct mlx5e_ipsec *ipsec,
-				    struct mlx5e_ipsec_rx *rx,
-				    struct mlx5_flow_destination *dest);
 void mlx5_esw_ipsec_rx_create_attr_set(struct mlx5e_ipsec *ipsec,
 				       struct mlx5e_ipsec_rx_create_attr *attr);
 int mlx5_esw_ipsec_rx_status_pass_dest_get(struct mlx5e_ipsec *ipsec,
@@ -26,16 +21,6 @@ void mlx5_esw_ipsec_tx_create_attr_set(struct mlx5e_ipsec *ipsec,
 				       struct mlx5e_ipsec_tx_create_attr *attr);
 void mlx5_esw_ipsec_restore_dest_uplink(struct mlx5_core_dev *mdev);
 #else
-static inline void mlx5_esw_ipsec_rx_status_destroy(struct mlx5e_ipsec *ipsec,
-						    struct mlx5e_ipsec_rx *rx) {}
-
-static inline int mlx5_esw_ipsec_rx_status_create(struct mlx5e_ipsec *ipsec,
-						  struct mlx5e_ipsec_rx *rx,
-						  struct mlx5_flow_destination *dest)
-{
-	return  -EINVAL;
-}
-
 static inline void mlx5_esw_ipsec_rx_create_attr_set(struct mlx5e_ipsec *ipsec,
 						     struct mlx5e_ipsec_rx_create_attr *attr) {}
 
-- 
2.43.0

[net V3 04/15] net/mlx5e: Remove exposure of IPsec RX flow steering struct

[Saeed Mahameed]

From: Leon Romanovsky <leonro@nvidia.com>

After previous commit, which unified various IPsec creation modes,
there is no need to have struct mlx5e_ipsec_rx exposed in global
IPsec header. Move it to ipsec_fs.c to be placed together with
already existing struct mlx5e_ipsec_tx.

Fixes: 1762f132d542 ("net/mlx5e: Support IPsec packet offload for RX in switchdev mode")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../ethernet/mellanox/mlx5/core/en_accel/ipsec.h | 14 +-------------
 .../mellanox/mlx5/core/en_accel/ipsec_fs.c       | 16 ++++++++++++++--
 .../ethernet/mellanox/mlx5/core/esw/ipsec_fs.c   |  8 ++++----
 3 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
index 8f4a37bceaf4..c3a40bf11952 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -201,19 +201,6 @@ struct mlx5e_ipsec_miss {
 	struct mlx5_flow_handle *rule;
 };
 
-struct mlx5e_ipsec_rx {
-	struct mlx5e_ipsec_ft ft;
-	struct mlx5e_ipsec_miss pol;
-	struct mlx5e_ipsec_miss sa;
-	struct mlx5e_ipsec_rule status;
-	struct mlx5e_ipsec_miss status_drop;
-	struct mlx5_fc *status_drop_cnt;
-	struct mlx5e_ipsec_fc *fc;
-	struct mlx5_fs_chains *chains;
-	u8 allow_tunnel_mode : 1;
-	struct xarray ipsec_obj_id_map;
-};
-
 struct mlx5e_ipsec_tx_create_attr {
 	int prio;
 	int pol_level;
@@ -248,6 +235,7 @@ struct mlx5e_ipsec {
 	struct mlx5_ipsec_fs *roce;
 	u8 is_uplink_rep: 1;
 	struct mlx5e_ipsec_mpv_work mpv_work;
+	struct xarray ipsec_obj_id_map;
 };
 
 struct mlx5e_ipsec_esn_state {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
index 85ed5171e835..aa74a2422869 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
@@ -32,6 +32,18 @@ struct mlx5e_ipsec_tx {
 	u8 allow_tunnel_mode : 1;
 };
 
+struct mlx5e_ipsec_rx {
+	struct mlx5e_ipsec_ft ft;
+	struct mlx5e_ipsec_miss pol;
+	struct mlx5e_ipsec_miss sa;
+	struct mlx5e_ipsec_rule status;
+	struct mlx5e_ipsec_miss status_drop;
+	struct mlx5_fc *status_drop_cnt;
+	struct mlx5e_ipsec_fc *fc;
+	struct mlx5_fs_chains *chains;
+	u8 allow_tunnel_mode : 1;
+};
+
 /* IPsec RX flow steering */
 static enum mlx5_traffic_types family2tt(u32 family)
 {
@@ -2052,7 +2064,7 @@ void mlx5e_accel_ipsec_fs_cleanup(struct mlx5e_ipsec *ipsec)
 	kfree(ipsec->rx_ipv6);
 
 	if (ipsec->is_uplink_rep) {
-		xa_destroy(&ipsec->rx_esw->ipsec_obj_id_map);
+		xa_destroy(&ipsec->ipsec_obj_id_map);
 
 		mutex_destroy(&ipsec->tx_esw->ft.mutex);
 		WARN_ON(ipsec->tx_esw->ft.refcnt);
@@ -2115,7 +2127,7 @@ int mlx5e_accel_ipsec_fs_init(struct mlx5e_ipsec *ipsec,
 		mutex_init(&ipsec->tx_esw->ft.mutex);
 		mutex_init(&ipsec->rx_esw->ft.mutex);
 		ipsec->tx_esw->ns = ns_esw;
-		xa_init_flags(&ipsec->rx_esw->ipsec_obj_id_map, XA_FLAGS_ALLOC1);
+		xa_init_flags(&ipsec->ipsec_obj_id_map, XA_FLAGS_ALLOC1);
 	} else if (mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_ROCE) {
 		ipsec->roce = mlx5_ipsec_fs_roce_init(mdev, devcom);
 	} else {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c
index 13b5916b64e2..5a0047bdcb51 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/ipsec_fs.c
@@ -50,7 +50,7 @@ int mlx5_esw_ipsec_rx_setup_modify_header(struct mlx5e_ipsec_sa_entry *sa_entry,
 	u32 mapped_id;
 	int err;
 
-	err = xa_alloc_bh(&ipsec->rx_esw->ipsec_obj_id_map, &mapped_id,
+	err = xa_alloc_bh(&ipsec->ipsec_obj_id_map, &mapped_id,
 			  xa_mk_value(sa_entry->ipsec_obj_id),
 			  XA_LIMIT(1, ESW_IPSEC_RX_MAPPED_ID_MASK), 0);
 	if (err)
@@ -81,7 +81,7 @@ int mlx5_esw_ipsec_rx_setup_modify_header(struct mlx5e_ipsec_sa_entry *sa_entry,
 	return 0;
 
 err_header_alloc:
-	xa_erase_bh(&ipsec->rx_esw->ipsec_obj_id_map, mapped_id);
+	xa_erase_bh(&ipsec->ipsec_obj_id_map, mapped_id);
 	return err;
 }
 
@@ -90,7 +90,7 @@ void mlx5_esw_ipsec_rx_id_mapping_remove(struct mlx5e_ipsec_sa_entry *sa_entry)
 	struct mlx5e_ipsec *ipsec = sa_entry->ipsec;
 
 	if (sa_entry->rx_mapped_id)
-		xa_erase_bh(&ipsec->rx_esw->ipsec_obj_id_map,
+		xa_erase_bh(&ipsec->ipsec_obj_id_map,
 			    sa_entry->rx_mapped_id);
 }
 
@@ -100,7 +100,7 @@ int mlx5_esw_ipsec_rx_ipsec_obj_id_search(struct mlx5e_priv *priv, u32 id,
 	struct mlx5e_ipsec *ipsec = priv->ipsec;
 	void *val;
 
-	val = xa_load(&ipsec->rx_esw->ipsec_obj_id_map, id);
+	val = xa_load(&ipsec->ipsec_obj_id_map, id);
 	if (!val)
 		return -ENOENT;
 
-- 
2.43.0

[net V3 05/15] net/mlx5e: Add IPsec and ASO syndromes check in HW

[Saeed Mahameed]

From: Patrisious Haddad <phaddad@nvidia.com>

After IPsec decryption it isn't enough to only check the IPsec syndrome
but need to also check the ASO syndrome in order to verify that the
operation was actually successful.

Verify that both syndromes are actually zero and in case not drop the
packet and increment the appropriate flow counter for the drop reason.

Fixes: 6b5c45e16e43 ("net/mlx5e: Configure IPsec packet offload flow steering")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.h       |   8 +
 .../mellanox/mlx5/core/en_accel/ipsec_fs.c    | 235 ++++++++++++++++--
 2 files changed, 223 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
index c3a40bf11952..adaea3493193 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h
@@ -189,11 +189,19 @@ struct mlx5e_ipsec_ft {
 	u32 refcnt;
 };
 
+struct mlx5e_ipsec_drop {
+	struct mlx5_flow_handle *rule;
+	struct mlx5_fc *fc;
+};
+
 struct mlx5e_ipsec_rule {
 	struct mlx5_flow_handle *rule;
 	struct mlx5_modify_hdr *modify_hdr;
 	struct mlx5_pkt_reformat *pkt_reformat;
 	struct mlx5_fc *fc;
+	struct mlx5e_ipsec_drop replay;
+	struct mlx5e_ipsec_drop auth;
+	struct mlx5e_ipsec_drop trailer;
 };
 
 struct mlx5e_ipsec_miss {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
index aa74a2422869..aeb399d8dae5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
@@ -32,13 +32,17 @@ struct mlx5e_ipsec_tx {
 	u8 allow_tunnel_mode : 1;
 };
 
+struct mlx5e_ipsec_status_checks {
+	struct mlx5_flow_group *drop_all_group;
+	struct mlx5e_ipsec_drop all;
+};
+
 struct mlx5e_ipsec_rx {
 	struct mlx5e_ipsec_ft ft;
 	struct mlx5e_ipsec_miss pol;
 	struct mlx5e_ipsec_miss sa;
 	struct mlx5e_ipsec_rule status;
-	struct mlx5e_ipsec_miss status_drop;
-	struct mlx5_fc *status_drop_cnt;
+	struct mlx5e_ipsec_status_checks status_drops;
 	struct mlx5e_ipsec_fc *fc;
 	struct mlx5_fs_chains *chains;
 	u8 allow_tunnel_mode : 1;
@@ -143,9 +147,9 @@ static struct mlx5_flow_table *ipsec_ft_create(struct mlx5_flow_namespace *ns,
 static void ipsec_rx_status_drop_destroy(struct mlx5e_ipsec *ipsec,
 					 struct mlx5e_ipsec_rx *rx)
 {
-	mlx5_del_flow_rules(rx->status_drop.rule);
-	mlx5_destroy_flow_group(rx->status_drop.group);
-	mlx5_fc_destroy(ipsec->mdev, rx->status_drop_cnt);
+	mlx5_del_flow_rules(rx->status_drops.all.rule);
+	mlx5_fc_destroy(ipsec->mdev, rx->status_drops.all.fc);
+	mlx5_destroy_flow_group(rx->status_drops.drop_all_group);
 }
 
 static void ipsec_rx_status_pass_destroy(struct mlx5e_ipsec *ipsec,
@@ -161,8 +165,149 @@ static void ipsec_rx_status_pass_destroy(struct mlx5e_ipsec *ipsec,
 #endif
 }
 
-static int ipsec_rx_status_drop_create(struct mlx5e_ipsec *ipsec,
-				       struct mlx5e_ipsec_rx *rx)
+static int rx_add_rule_drop_auth_trailer(struct mlx5e_ipsec_sa_entry *sa_entry,
+					 struct mlx5e_ipsec_rx *rx)
+{
+	struct mlx5e_ipsec *ipsec = sa_entry->ipsec;
+	struct mlx5_flow_table *ft = rx->ft.status;
+	struct mlx5_core_dev *mdev = ipsec->mdev;
+	struct mlx5_flow_destination dest = {};
+	struct mlx5_flow_act flow_act = {};
+	struct mlx5_flow_handle *rule;
+	struct mlx5_fc *flow_counter;
+	struct mlx5_flow_spec *spec;
+	int err;
+
+	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+	if (!spec)
+		return -ENOMEM;
+
+	flow_counter = mlx5_fc_create(mdev, true);
+	if (IS_ERR(flow_counter)) {
+		err = PTR_ERR(flow_counter);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule counter, err=%d\n", err);
+		goto err_cnt;
+	}
+	sa_entry->ipsec_rule.auth.fc = flow_counter;
+
+	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT;
+	flow_act.flags = FLOW_ACT_NO_APPEND;
+	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
+	dest.counter_id = mlx5_fc_id(flow_counter);
+	if (rx == ipsec->rx_esw)
+		spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
+
+	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, misc_parameters_2.ipsec_syndrome);
+	MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.ipsec_syndrome, 1);
+	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, misc_parameters_2.metadata_reg_c_2);
+	MLX5_SET(fte_match_param, spec->match_value,
+		 misc_parameters_2.metadata_reg_c_2,
+		 sa_entry->ipsec_obj_id | BIT(31));
+	spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
+	rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
+	if (IS_ERR(rule)) {
+		err = PTR_ERR(rule);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule, err=%d\n", err);
+		goto err_rule;
+	}
+	sa_entry->ipsec_rule.auth.rule = rule;
+
+	flow_counter = mlx5_fc_create(mdev, true);
+	if (IS_ERR(flow_counter)) {
+		err = PTR_ERR(flow_counter);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule counter, err=%d\n", err);
+		goto err_cnt_2;
+	}
+	sa_entry->ipsec_rule.trailer.fc = flow_counter;
+
+	dest.counter_id = mlx5_fc_id(flow_counter);
+	MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.ipsec_syndrome, 2);
+	rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
+	if (IS_ERR(rule)) {
+		err = PTR_ERR(rule);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule, err=%d\n", err);
+		goto err_rule_2;
+	}
+	sa_entry->ipsec_rule.trailer.rule = rule;
+
+	kvfree(spec);
+	return 0;
+
+err_rule_2:
+	mlx5_fc_destroy(mdev, sa_entry->ipsec_rule.trailer.fc);
+err_cnt_2:
+	mlx5_del_flow_rules(sa_entry->ipsec_rule.auth.rule);
+err_rule:
+	mlx5_fc_destroy(mdev, sa_entry->ipsec_rule.auth.fc);
+err_cnt:
+	kvfree(spec);
+	return err;
+}
+
+static int rx_add_rule_drop_replay(struct mlx5e_ipsec_sa_entry *sa_entry, struct mlx5e_ipsec_rx *rx)
+{
+	struct mlx5e_ipsec *ipsec = sa_entry->ipsec;
+	struct mlx5_flow_table *ft = rx->ft.status;
+	struct mlx5_core_dev *mdev = ipsec->mdev;
+	struct mlx5_flow_destination dest = {};
+	struct mlx5_flow_act flow_act = {};
+	struct mlx5_flow_handle *rule;
+	struct mlx5_fc *flow_counter;
+	struct mlx5_flow_spec *spec;
+	int err;
+
+	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
+	if (!spec)
+		return -ENOMEM;
+
+	flow_counter = mlx5_fc_create(mdev, true);
+	if (IS_ERR(flow_counter)) {
+		err = PTR_ERR(flow_counter);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule counter, err=%d\n", err);
+		goto err_cnt;
+	}
+
+	flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT;
+	flow_act.flags = FLOW_ACT_NO_APPEND;
+	dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
+	dest.counter_id = mlx5_fc_id(flow_counter);
+	if (rx == ipsec->rx_esw)
+		spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
+
+	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, misc_parameters_2.metadata_reg_c_4);
+	MLX5_SET(fte_match_param, spec->match_value, misc_parameters_2.metadata_reg_c_4, 1);
+	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, misc_parameters_2.metadata_reg_c_2);
+	MLX5_SET(fte_match_param, spec->match_value,  misc_parameters_2.metadata_reg_c_2,
+		 sa_entry->ipsec_obj_id | BIT(31));
+	spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
+	rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
+	if (IS_ERR(rule)) {
+		err = PTR_ERR(rule);
+		mlx5_core_err(mdev,
+			      "Failed to add ipsec rx status drop rule, err=%d\n", err);
+		goto err_rule;
+	}
+
+	sa_entry->ipsec_rule.replay.rule = rule;
+	sa_entry->ipsec_rule.replay.fc = flow_counter;
+
+	kvfree(spec);
+	return 0;
+
+err_rule:
+	mlx5_fc_destroy(mdev, flow_counter);
+err_cnt:
+	kvfree(spec);
+	return err;
+}
+
+static int ipsec_rx_status_drop_all_create(struct mlx5e_ipsec *ipsec,
+					   struct mlx5e_ipsec_rx *rx)
 {
 	int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
 	struct mlx5_flow_table *ft = rx->ft.status;
@@ -214,9 +359,9 @@ static int ipsec_rx_status_drop_create(struct mlx5e_ipsec *ipsec,
 		goto err_rule;
 	}
 
-	rx->status_drop.group = g;
-	rx->status_drop.rule = rule;
-	rx->status_drop_cnt = flow_counter;
+	rx->status_drops.drop_all_group = g;
+	rx->status_drops.all.rule = rule;
+	rx->status_drops.all.fc = flow_counter;
 
 	kvfree(flow_group_in);
 	kvfree(spec);
@@ -247,8 +392,12 @@ static int ipsec_rx_status_pass_create(struct mlx5e_ipsec *ipsec,
 
 	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
 			 misc_parameters_2.ipsec_syndrome);
+	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
+			 misc_parameters_2.metadata_reg_c_4);
 	MLX5_SET(fte_match_param, spec->match_value,
 		 misc_parameters_2.ipsec_syndrome, 0);
+	MLX5_SET(fte_match_param, spec->match_value,
+		 misc_parameters_2.metadata_reg_c_4, 0);
 	if (rx == ipsec->rx_esw)
 		spec->flow_context.flow_source = MLX5_FLOW_CONTEXT_FLOW_SOURCE_UPLINK;
 	spec->match_criteria_enable = MLX5_MATCH_MISC_PARAMETERS_2;
@@ -285,7 +434,7 @@ static int mlx5_ipsec_rx_status_create(struct mlx5e_ipsec *ipsec,
 {
 	int err;
 
-	err = ipsec_rx_status_drop_create(ipsec, rx);
+	err = ipsec_rx_status_drop_all_create(ipsec, rx);
 	if (err)
 		return err;
 
@@ -529,7 +678,7 @@ static int rx_create(struct mlx5_core_dev *mdev, struct mlx5e_ipsec *ipsec,
 	if (err)
 		return err;
 
-	ft = ipsec_ft_create(attr.ns, attr.status_level, attr.prio, 1, 0);
+	ft = ipsec_ft_create(attr.ns, attr.status_level, attr.prio, 3, 0);
 	if (IS_ERR(ft)) {
 		err = PTR_ERR(ft);
 		goto err_fs_ft_status;
@@ -1159,29 +1308,48 @@ static int setup_modify_header(struct mlx5e_ipsec *ipsec, int type, u32 val, u8
 			       struct mlx5_flow_act *flow_act)
 {
 	enum mlx5_flow_namespace_type ns_type = ipsec_fs_get_ns(ipsec, type, dir);
-	u8 action[MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)] = {};
+	u8 action[3][MLX5_UN_SZ_BYTES(set_add_copy_action_in_auto)] = {};
 	struct mlx5_core_dev *mdev = ipsec->mdev;
 	struct mlx5_modify_hdr *modify_hdr;
+	u8 num_of_actions = 1;
 
-	MLX5_SET(set_action_in, action, action_type, MLX5_ACTION_TYPE_SET);
+	MLX5_SET(set_action_in, action[0], action_type, MLX5_ACTION_TYPE_SET);
 	switch (dir) {
 	case XFRM_DEV_OFFLOAD_IN:
-		MLX5_SET(set_action_in, action, field,
+		MLX5_SET(set_action_in, action[0], field,
 			 MLX5_ACTION_IN_FIELD_METADATA_REG_B);
+
+		num_of_actions++;
+		MLX5_SET(set_action_in, action[1], action_type, MLX5_ACTION_TYPE_SET);
+		MLX5_SET(set_action_in, action[1], field, MLX5_ACTION_IN_FIELD_METADATA_REG_C_2);
+		MLX5_SET(set_action_in, action[1], data, val);
+		MLX5_SET(set_action_in, action[1], offset, 0);
+		MLX5_SET(set_action_in, action[1], length, 32);
+
+		if (type == XFRM_DEV_OFFLOAD_CRYPTO) {
+			num_of_actions++;
+			MLX5_SET(set_action_in, action[2], action_type,
+				 MLX5_ACTION_TYPE_SET);
+			MLX5_SET(set_action_in, action[2], field,
+				 MLX5_ACTION_IN_FIELD_METADATA_REG_C_4);
+			MLX5_SET(set_action_in, action[2], data, 0);
+			MLX5_SET(set_action_in, action[2], offset, 0);
+			MLX5_SET(set_action_in, action[2], length, 32);
+		}
 		break;
 	case XFRM_DEV_OFFLOAD_OUT:
-		MLX5_SET(set_action_in, action, field,
+		MLX5_SET(set_action_in, action[0], field,
 			 MLX5_ACTION_IN_FIELD_METADATA_REG_C_4);
 		break;
 	default:
 		return -EINVAL;
 	}
 
-	MLX5_SET(set_action_in, action, data, val);
-	MLX5_SET(set_action_in, action, offset, 0);
-	MLX5_SET(set_action_in, action, length, 32);
+	MLX5_SET(set_action_in, action[0], data, val);
+	MLX5_SET(set_action_in, action[0], offset, 0);
+	MLX5_SET(set_action_in, action[0], length, 32);
 
-	modify_hdr = mlx5_modify_header_alloc(mdev, ns_type, 1, action);
+	modify_hdr = mlx5_modify_header_alloc(mdev, ns_type, num_of_actions, action);
 	if (IS_ERR(modify_hdr)) {
 		mlx5_core_err(mdev, "Failed to allocate modify_header %ld\n",
 			      PTR_ERR(modify_hdr));
@@ -1479,6 +1647,15 @@ static int rx_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
 		mlx5_core_err(mdev, "fail to add RX ipsec rule err=%d\n", err);
 		goto err_add_flow;
 	}
+	if (attrs->type == XFRM_DEV_OFFLOAD_PACKET)
+		err = rx_add_rule_drop_replay(sa_entry, rx);
+	if (err)
+		goto err_add_replay;
+
+	err = rx_add_rule_drop_auth_trailer(sa_entry, rx);
+	if (err)
+		goto err_drop_reason;
+
 	kvfree(spec);
 
 	sa_entry->ipsec_rule.rule = rule;
@@ -1487,6 +1664,13 @@ static int rx_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
 	sa_entry->ipsec_rule.pkt_reformat = flow_act.pkt_reformat;
 	return 0;
 
+err_drop_reason:
+	if (sa_entry->ipsec_rule.replay.rule) {
+		mlx5_del_flow_rules(sa_entry->ipsec_rule.replay.rule);
+		mlx5_fc_destroy(mdev, sa_entry->ipsec_rule.replay.fc);
+	}
+err_add_replay:
+	mlx5_del_flow_rules(rule);
 err_add_flow:
 	mlx5_fc_destroy(mdev, counter);
 err_add_cnt:
@@ -1994,6 +2178,17 @@ void mlx5e_accel_ipsec_fs_del_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
 
 	if (ipsec_rule->modify_hdr)
 		mlx5_modify_header_dealloc(mdev, ipsec_rule->modify_hdr);
+
+	mlx5_del_flow_rules(ipsec_rule->trailer.rule);
+	mlx5_fc_destroy(mdev, ipsec_rule->trailer.fc);
+
+	mlx5_del_flow_rules(ipsec_rule->auth.rule);
+	mlx5_fc_destroy(mdev, ipsec_rule->auth.fc);
+
+	if (ipsec_rule->replay.rule) {
+		mlx5_del_flow_rules(ipsec_rule->replay.rule);
+		mlx5_fc_destroy(mdev, ipsec_rule->replay.fc);
+	}
 	mlx5_esw_ipsec_rx_id_mapping_remove(sa_entry);
 	rx_ft_put(sa_entry->ipsec, sa_entry->attrs.family, sa_entry->attrs.type);
 }
-- 
2.43.0

[net V3 06/15] net/mlx5e: Tidy up IPsec NAT-T SA discovery

[Saeed Mahameed]

From: Leon Romanovsky <leonro@nvidia.com>

IPsec NAT-T packets are UDP encapsulated packets over ESP normal ones.
In case they arrive to RX, the SPI and ESP are located in inner header,
while the check was performed on outer header instead.

That wrong check caused to the situation where received rekeying request
was missed and caused to rekey timeout, which "compensated" this failure
by completing rekeying.

Fixes: d65954934937 ("net/mlx5e: Support IPsec NAT-T functionality")
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec_fs.c    | 22 ++++++++++++++-----
 include/linux/mlx5/mlx5_ifc.h                 |  2 +-
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
index aeb399d8dae5..7a789061c998 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
@@ -1212,13 +1212,22 @@ static void setup_fte_esp(struct mlx5_flow_spec *spec)
 	MLX5_SET(fte_match_param, spec->match_value, outer_headers.ip_protocol, IPPROTO_ESP);
 }
 
-static void setup_fte_spi(struct mlx5_flow_spec *spec, u32 spi)
+static void setup_fte_spi(struct mlx5_flow_spec *spec, u32 spi, bool encap)
 {
 	/* SPI number */
 	spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
 
-	MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria, misc_parameters.outer_esp_spi);
-	MLX5_SET(fte_match_param, spec->match_value, misc_parameters.outer_esp_spi, spi);
+	if (encap) {
+		MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
+				 misc_parameters.inner_esp_spi);
+		MLX5_SET(fte_match_param, spec->match_value,
+			 misc_parameters.inner_esp_spi, spi);
+	} else {
+		MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
+				 misc_parameters.outer_esp_spi);
+		MLX5_SET(fte_match_param, spec->match_value,
+			 misc_parameters.outer_esp_spi, spi);
+	}
 }
 
 static void setup_fte_no_frags(struct mlx5_flow_spec *spec)
@@ -1596,8 +1605,9 @@ static int rx_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
 	else
 		setup_fte_addr6(spec, attrs->saddr.a6, attrs->daddr.a6);
 
-	setup_fte_spi(spec, attrs->spi);
-	setup_fte_esp(spec);
+	setup_fte_spi(spec, attrs->spi, attrs->encap);
+	if (!attrs->encap)
+		setup_fte_esp(spec);
 	setup_fte_no_frags(spec);
 	setup_fte_upper_proto_match(spec, &attrs->upspec);
 
@@ -1719,7 +1729,7 @@ static int tx_add_rule(struct mlx5e_ipsec_sa_entry *sa_entry)
 
 	switch (attrs->type) {
 	case XFRM_DEV_OFFLOAD_CRYPTO:
-		setup_fte_spi(spec, attrs->spi);
+		setup_fte_spi(spec, attrs->spi, false);
 		setup_fte_esp(spec);
 		setup_fte_reg_a(spec);
 		break;
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 90ca63f4bf63..3f7b664d625b 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -621,7 +621,7 @@ struct mlx5_ifc_fte_match_set_misc_bits {
 
 	u8         reserved_at_140[0x8];
 	u8         bth_dst_qp[0x18];
-	u8	   reserved_at_160[0x20];
+	u8	   inner_esp_spi[0x20];
 	u8	   outer_esp_spi[0x20];
 	u8         reserved_at_1a0[0x60];
 };
-- 
2.43.0

[net V3 07/15] net/mlx5e: Reduce eswitch mode_lock protection context

[Saeed Mahameed]

From: Jianbo Liu <jianbol@nvidia.com>

Currently eswitch mode_lock is so heavy, for example, it's locked
during the whole process of the mode change, which may need to hold
other locks. As the mode_lock is also used by IPSec to block mode and
encap change now, it is easy to cause lock dependency.

Since some of protections are also done by devlink lock, the eswitch
mode_lock is not needed at those places, and thus the possibility of
lockdep issue is reduced.

Fixes: c8e350e62fc5 ("net/mlx5e: Make TC and IPsec offloads mutually exclusive on a netdev")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec_fs.c    |  9 +++--
 .../net/ethernet/mellanox/mlx5/core/eswitch.c | 35 ++++++++++-------
 .../net/ethernet/mellanox/mlx5/core/eswitch.h |  2 +
 .../mellanox/mlx5/core/eswitch_offloads.c     | 38 +++++++++++--------
 4 files changed, 52 insertions(+), 32 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
index 7a789061c998..c1e89dc77db9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_fs.c
@@ -2110,8 +2110,11 @@ static int mlx5e_ipsec_block_tc_offload(struct mlx5_core_dev *mdev)
 	struct mlx5_eswitch *esw = mdev->priv.eswitch;
 	int err = 0;
 
-	if (esw)
-		down_write(&esw->mode_lock);
+	if (esw) {
+		err = mlx5_esw_lock(esw);
+		if (err)
+			return err;
+	}
 
 	if (mdev->num_block_ipsec) {
 		err = -EBUSY;
@@ -2122,7 +2125,7 @@ static int mlx5e_ipsec_block_tc_offload(struct mlx5_core_dev *mdev)
 
 unlock:
 	if (esw)
-		up_write(&esw->mode_lock);
+		mlx5_esw_unlock(esw);
 
 	return err;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 8d0b915a3121..3047d7015c52 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1463,7 +1463,7 @@ int mlx5_eswitch_enable_locked(struct mlx5_eswitch *esw, int num_vfs)
 {
 	int err;
 
-	lockdep_assert_held(&esw->mode_lock);
+	devl_assert_locked(priv_to_devlink(esw->dev));
 
 	if (!MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ft_support)) {
 		esw_warn(esw->dev, "FDB is not supported, aborting ...\n");
@@ -1531,7 +1531,6 @@ int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int num_vfs)
 	if (toggle_lag)
 		mlx5_lag_disable_change(esw->dev);
 
-	down_write(&esw->mode_lock);
 	if (!mlx5_esw_is_fdb_created(esw)) {
 		ret = mlx5_eswitch_enable_locked(esw, num_vfs);
 	} else {
@@ -1554,8 +1553,6 @@ int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int num_vfs)
 		}
 	}
 
-	up_write(&esw->mode_lock);
-
 	if (toggle_lag)
 		mlx5_lag_enable_change(esw->dev);
 
@@ -1569,12 +1566,11 @@ void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw, bool clear_vf)
 		return;
 
 	devl_assert_locked(priv_to_devlink(esw->dev));
-	down_write(&esw->mode_lock);
 	/* If driver is unloaded, this function is called twice by remove_one()
 	 * and mlx5_unload(). Prevent the second call.
 	 */
 	if (!esw->esw_funcs.num_vfs && !esw->esw_funcs.num_ec_vfs && !clear_vf)
-		goto unlock;
+		return;
 
 	esw_info(esw->dev, "Unload vfs: mode(%s), nvfs(%d), necvfs(%d), active vports(%d)\n",
 		 esw->mode == MLX5_ESWITCH_LEGACY ? "LEGACY" : "OFFLOADS",
@@ -1603,9 +1599,6 @@ void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw, bool clear_vf)
 		esw->esw_funcs.num_vfs = 0;
 	else
 		esw->esw_funcs.num_ec_vfs = 0;
-
-unlock:
-	up_write(&esw->mode_lock);
 }
 
 /* Free resources for corresponding eswitch mode. It is called by devlink
@@ -1647,10 +1640,8 @@ void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
 
 	devl_assert_locked(priv_to_devlink(esw->dev));
 	mlx5_lag_disable_change(esw->dev);
-	down_write(&esw->mode_lock);
 	mlx5_eswitch_disable_locked(esw);
 	esw->mode = MLX5_ESWITCH_LEGACY;
-	up_write(&esw->mode_lock);
 	mlx5_lag_enable_change(esw->dev);
 }
 
@@ -2254,8 +2245,13 @@ bool mlx5_esw_hold(struct mlx5_core_dev *mdev)
 	if (!mlx5_esw_allowed(esw))
 		return true;
 
-	if (down_read_trylock(&esw->mode_lock) != 0)
+	if (down_read_trylock(&esw->mode_lock) != 0) {
+		if (esw->eswitch_operation_in_progress) {
+			up_read(&esw->mode_lock);
+			return false;
+		}
 		return true;
+	}
 
 	return false;
 }
@@ -2312,7 +2308,8 @@ int mlx5_esw_try_lock(struct mlx5_eswitch *esw)
 	if (down_write_trylock(&esw->mode_lock) == 0)
 		return -EINVAL;
 
-	if (atomic64_read(&esw->user_count) > 0) {
+	if (esw->eswitch_operation_in_progress ||
+	    atomic64_read(&esw->user_count) > 0) {
 		up_write(&esw->mode_lock);
 		return -EBUSY;
 	}
@@ -2320,6 +2317,18 @@ int mlx5_esw_try_lock(struct mlx5_eswitch *esw)
 	return esw->mode;
 }
 
+int mlx5_esw_lock(struct mlx5_eswitch *esw)
+{
+	down_write(&esw->mode_lock);
+
+	if (esw->eswitch_operation_in_progress) {
+		up_write(&esw->mode_lock);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
 /**
  * mlx5_esw_unlock() - Release write lock on esw mode lock
  * @esw: eswitch device.
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index 37ab66e7b403..b674b57d05aa 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -383,6 +383,7 @@ struct mlx5_eswitch {
 	struct xarray paired;
 	struct mlx5_devcom_comp_dev *devcom;
 	u16 enabled_ipsec_vf_count;
+	bool eswitch_operation_in_progress;
 };
 
 void esw_offloads_disable(struct mlx5_eswitch *esw);
@@ -827,6 +828,7 @@ void mlx5_esw_release(struct mlx5_core_dev *dev);
 void mlx5_esw_get(struct mlx5_core_dev *dev);
 void mlx5_esw_put(struct mlx5_core_dev *dev);
 int mlx5_esw_try_lock(struct mlx5_eswitch *esw);
+int mlx5_esw_lock(struct mlx5_eswitch *esw);
 void mlx5_esw_unlock(struct mlx5_eswitch *esw);
 
 void esw_vport_change_handle_locked(struct mlx5_vport *vport);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 88236e75fd90..bf78eeca401b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -3733,13 +3733,16 @@ int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
 		goto unlock;
 	}
 
+	esw->eswitch_operation_in_progress = true;
+	up_write(&esw->mode_lock);
+
 	mlx5_eswitch_disable_locked(esw);
 	if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV) {
 		if (mlx5_devlink_trap_get_num_active(esw->dev)) {
 			NL_SET_ERR_MSG_MOD(extack,
 					   "Can't change mode while devlink traps are active");
 			err = -EOPNOTSUPP;
-			goto unlock;
+			goto skip;
 		}
 		err = esw_offloads_start(esw, extack);
 	} else if (mode == DEVLINK_ESWITCH_MODE_LEGACY) {
@@ -3749,6 +3752,9 @@ int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
 		err = -EINVAL;
 	}
 
+skip:
+	down_write(&esw->mode_lock);
+	esw->eswitch_operation_in_progress = false;
 unlock:
 	mlx5_esw_unlock(esw);
 enable_lag:
@@ -3759,16 +3765,12 @@ int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
 int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
 {
 	struct mlx5_eswitch *esw;
-	int err;
 
 	esw = mlx5_devlink_eswitch_get(devlink);
 	if (IS_ERR(esw))
 		return PTR_ERR(esw);
 
-	down_read(&esw->mode_lock);
-	err = esw_mode_to_devlink(esw->mode, mode);
-	up_read(&esw->mode_lock);
-	return err;
+	return esw_mode_to_devlink(esw->mode, mode);
 }
 
 static int mlx5_esw_vports_inline_set(struct mlx5_eswitch *esw, u8 mlx5_mode,
@@ -3862,11 +3864,15 @@ int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode,
 	if (err)
 		goto out;
 
+	esw->eswitch_operation_in_progress = true;
+	up_write(&esw->mode_lock);
+
 	err = mlx5_esw_vports_inline_set(esw, mlx5_mode, extack);
-	if (err)
-		goto out;
+	if (!err)
+		esw->offloads.inline_mode = mlx5_mode;
 
-	esw->offloads.inline_mode = mlx5_mode;
+	down_write(&esw->mode_lock);
+	esw->eswitch_operation_in_progress = false;
 	up_write(&esw->mode_lock);
 	return 0;
 
@@ -3878,16 +3884,12 @@ int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode,
 int mlx5_devlink_eswitch_inline_mode_get(struct devlink *devlink, u8 *mode)
 {
 	struct mlx5_eswitch *esw;
-	int err;
 
 	esw = mlx5_devlink_eswitch_get(devlink);
 	if (IS_ERR(esw))
 		return PTR_ERR(esw);
 
-	down_read(&esw->mode_lock);
-	err = esw_inline_mode_to_devlink(esw->offloads.inline_mode, mode);
-	up_read(&esw->mode_lock);
-	return err;
+	return esw_inline_mode_to_devlink(esw->offloads.inline_mode, mode);
 }
 
 bool mlx5_eswitch_block_encap(struct mlx5_core_dev *dev)
@@ -3969,6 +3971,9 @@ int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink,
 		goto unlock;
 	}
 
+	esw->eswitch_operation_in_progress = true;
+	up_write(&esw->mode_lock);
+
 	esw_destroy_offloads_fdb_tables(esw);
 
 	esw->offloads.encap = encap;
@@ -3982,6 +3987,9 @@ int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink,
 		(void)esw_create_offloads_fdb_tables(esw);
 	}
 
+	down_write(&esw->mode_lock);
+	esw->eswitch_operation_in_progress = false;
+
 unlock:
 	up_write(&esw->mode_lock);
 	return err;
@@ -3996,9 +4004,7 @@ int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink,
 	if (IS_ERR(esw))
 		return PTR_ERR(esw);
 
-	down_read(&esw->mode_lock);
 	*encap = esw->offloads.encap;
-	up_read(&esw->mode_lock);
 	return 0;
 }
 
-- 
2.43.0

[net V3 08/15] net/mlx5e: Disable IPsec offload support if not FW steering

[Saeed Mahameed]

From: Chris Mi <cmi@nvidia.com>

IPsec FDB offload can only work with FW steering as of now,
disable the cap upon non FW steering.

And since the IPSec cap is dynamic now based on steering mode.
Cleanup the resources if they exist instead of checking the
IPsec cap again.

Fixes: edd8b295f9e2 ("Merge branch 'mlx5-ipsec-packet-offload-support-in-eswitch-mode'")
Signed-off-by: Chris Mi <cmi@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en_accel/ipsec.c       | 26 ++++++++-----------
 .../mlx5/core/en_accel/ipsec_offload.c        |  8 +++++-
 2 files changed, 18 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
index 914b9e6eb7db..161c5190c236 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c
@@ -935,9 +935,11 @@ void mlx5e_ipsec_cleanup(struct mlx5e_priv *priv)
 		return;
 
 	mlx5e_accel_ipsec_fs_cleanup(ipsec);
-	if (mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_TUNNEL)
+	if (ipsec->netevent_nb.notifier_call) {
 		unregister_netevent_notifier(&ipsec->netevent_nb);
-	if (mlx5_ipsec_device_caps(priv->mdev) & MLX5_IPSEC_CAP_PACKET_OFFLOAD)
+		ipsec->netevent_nb.notifier_call = NULL;
+	}
+	if (ipsec->aso)
 		mlx5e_ipsec_aso_cleanup(ipsec);
 	destroy_workqueue(ipsec->wq);
 	kfree(ipsec);
@@ -1046,6 +1048,12 @@ static int mlx5e_xfrm_validate_policy(struct mlx5_core_dev *mdev,
 		}
 	}
 
+	if (x->xdo.type == XFRM_DEV_OFFLOAD_PACKET &&
+	    !(mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_PACKET_OFFLOAD)) {
+		NL_SET_ERR_MSG_MOD(extack, "Packet offload is not supported");
+		return -EINVAL;
+	}
+
 	return 0;
 }
 
@@ -1141,14 +1149,6 @@ static const struct xfrmdev_ops mlx5e_ipsec_xfrmdev_ops = {
 	.xdo_dev_state_free	= mlx5e_xfrm_free_state,
 	.xdo_dev_offload_ok	= mlx5e_ipsec_offload_ok,
 	.xdo_dev_state_advance_esn = mlx5e_xfrm_advance_esn_state,
-};
-
-static const struct xfrmdev_ops mlx5e_ipsec_packet_xfrmdev_ops = {
-	.xdo_dev_state_add	= mlx5e_xfrm_add_state,
-	.xdo_dev_state_delete	= mlx5e_xfrm_del_state,
-	.xdo_dev_state_free	= mlx5e_xfrm_free_state,
-	.xdo_dev_offload_ok	= mlx5e_ipsec_offload_ok,
-	.xdo_dev_state_advance_esn = mlx5e_xfrm_advance_esn_state,
 
 	.xdo_dev_state_update_curlft = mlx5e_xfrm_update_curlft,
 	.xdo_dev_policy_add = mlx5e_xfrm_add_policy,
@@ -1166,11 +1166,7 @@ void mlx5e_ipsec_build_netdev(struct mlx5e_priv *priv)
 
 	mlx5_core_info(mdev, "mlx5e: IPSec ESP acceleration enabled\n");
 
-	if (mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_PACKET_OFFLOAD)
-		netdev->xfrmdev_ops = &mlx5e_ipsec_packet_xfrmdev_ops;
-	else
-		netdev->xfrmdev_ops = &mlx5e_ipsec_xfrmdev_ops;
-
+	netdev->xfrmdev_ops = &mlx5e_ipsec_xfrmdev_ops;
 	netdev->features |= NETIF_F_HW_ESP;
 	netdev->hw_enc_features |= NETIF_F_HW_ESP;
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
index 4e018fba2d5f..6e00afe4671b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c
@@ -6,6 +6,8 @@
 #include "ipsec.h"
 #include "lib/crypto.h"
 #include "lib/ipsec_fs_roce.h"
+#include "fs_core.h"
+#include "eswitch.h"
 
 enum {
 	MLX5_IPSEC_ASO_REMOVE_FLOW_PKT_CNT_OFFSET,
@@ -38,7 +40,10 @@ u32 mlx5_ipsec_device_caps(struct mlx5_core_dev *mdev)
 	    MLX5_CAP_ETH(mdev, insert_trailer) && MLX5_CAP_ETH(mdev, swp))
 		caps |= MLX5_IPSEC_CAP_CRYPTO;
 
-	if (MLX5_CAP_IPSEC(mdev, ipsec_full_offload)) {
+	if (MLX5_CAP_IPSEC(mdev, ipsec_full_offload) &&
+	    (mdev->priv.steering->mode == MLX5_FLOW_STEERING_MODE_DMFS ||
+	     (mdev->priv.steering->mode == MLX5_FLOW_STEERING_MODE_SMFS &&
+	     is_mdev_legacy_mode(mdev)))) {
 		if (MLX5_CAP_FLOWTABLE_NIC_TX(mdev,
 					      reformat_add_esp_trasport) &&
 		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
@@ -559,6 +564,7 @@ void mlx5e_ipsec_aso_cleanup(struct mlx5e_ipsec *ipsec)
 	dma_unmap_single(pdev, aso->dma_addr, sizeof(aso->ctx),
 			 DMA_BIDIRECTIONAL);
 	kfree(aso);
+	ipsec->aso = NULL;
 }
 
 static void mlx5e_ipsec_aso_copy(struct mlx5_wqe_aso_ctrl_seg *ctrl,
-- 
2.43.0

[net V3 09/15] net/mlx5e: Fix possible deadlock on mlx5e_tx_timeout_work

[Saeed Mahameed]

From: Moshe Shemesh <moshe@nvidia.com>

Due to the cited patch, devlink health commands take devlink lock and
this may result in deadlock for mlx5e_tx_reporter as it takes local
state_lock before calling devlink health report and on the other hand
devlink health commands such as diagnose for same reporter take local
state_lock after taking devlink lock (see kernel log below).

To fix it, remove local state_lock from mlx5e_tx_timeout_work() before
calling devlink_health_report() and take care to cancel the work before
any call to close channels, which may free the SQs that should be
handled by the work. Before cancel_work_sync(), use current_work() to
check we are not calling it from within the work, as
mlx5e_tx_timeout_work() itself may close the channels and reopen as part
of recovery flow.

While removing state_lock from mlx5e_tx_timeout_work() keep rtnl_lock to
ensure no change in netdev->real_num_tx_queues, but use rtnl_trylock()
and a flag to avoid deadlock by calling cancel_work_sync() before
closing the channels while holding rtnl_lock too.

Kernel log:
======================================================
WARNING: possible circular locking dependency detected
6.0.0-rc3_for_upstream_debug_2022_08_30_13_10 #1 Not tainted
------------------------------------------------------
kworker/u16:2/65 is trying to acquire lock:
ffff888122f6c2f8 (&devlink->lock_key#2){+.+.}-{3:3}, at: devlink_health_report+0x2f1/0x7e0

but task is already holding lock:
ffff888121d20be0 (&priv->state_lock){+.+.}-{3:3}, at: mlx5e_tx_timeout_work+0x70/0x280 [mlx5_core]

which lock already depends on the new lock.

the existing dependency chain (in reverse order) is:

-> #1 (&priv->state_lock){+.+.}-{3:3}:
       __mutex_lock+0x12c/0x14b0
       mlx5e_rx_reporter_diagnose+0x71/0x700 [mlx5_core]
       devlink_nl_cmd_health_reporter_diagnose_doit+0x212/0xa50
       genl_family_rcv_msg_doit+0x1e9/0x2f0
       genl_rcv_msg+0x2e9/0x530
       netlink_rcv_skb+0x11d/0x340
       genl_rcv+0x24/0x40
       netlink_unicast+0x438/0x710
       netlink_sendmsg+0x788/0xc40
       sock_sendmsg+0xb0/0xe0
       __sys_sendto+0x1c1/0x290
       __x64_sys_sendto+0xdd/0x1b0
       do_syscall_64+0x3d/0x90
       entry_SYSCALL_64_after_hwframe+0x46/0xb0

-> #0 (&devlink->lock_key#2){+.+.}-{3:3}:
       __lock_acquire+0x2c8a/0x6200
       lock_acquire+0x1c1/0x550
       __mutex_lock+0x12c/0x14b0
       devlink_health_report+0x2f1/0x7e0
       mlx5e_health_report+0xc9/0xd7 [mlx5_core]
       mlx5e_reporter_tx_timeout+0x2ab/0x3d0 [mlx5_core]
       mlx5e_tx_timeout_work+0x1c1/0x280 [mlx5_core]
       process_one_work+0x7c2/0x1340
       worker_thread+0x59d/0xec0
       kthread+0x28f/0x330
       ret_from_fork+0x1f/0x30

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&priv->state_lock);
                               lock(&devlink->lock_key#2);
                               lock(&priv->state_lock);
  lock(&devlink->lock_key#2);

 *** DEADLOCK ***

4 locks held by kworker/u16:2/65:
 #0: ffff88811a55b138 ((wq_completion)mlx5e#2){+.+.}-{0:0}, at: process_one_work+0x6e2/0x1340
 #1: ffff888101de7db8 ((work_completion)(&priv->tx_timeout_work)){+.+.}-{0:0}, at: process_one_work+0x70f/0x1340
 #2: ffffffff84ce8328 (rtnl_mutex){+.+.}-{3:3}, at: mlx5e_tx_timeout_work+0x53/0x280 [mlx5_core]
 #3: ffff888121d20be0 (&priv->state_lock){+.+.}-{3:3}, at: mlx5e_tx_timeout_work+0x70/0x280 [mlx5_core]

stack backtrace:
CPU: 1 PID: 65 Comm: kworker/u16:2 Not tainted 6.0.0-rc3_for_upstream_debug_2022_08_30_13_10 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
Workqueue: mlx5e mlx5e_tx_timeout_work [mlx5_core]
Call Trace:
 <TASK>
 dump_stack_lvl+0x57/0x7d
 check_noncircular+0x278/0x300
 ? print_circular_bug+0x460/0x460
 ? find_held_lock+0x2d/0x110
 ? __stack_depot_save+0x24c/0x520
 ? alloc_chain_hlocks+0x228/0x700
 __lock_acquire+0x2c8a/0x6200
 ? register_lock_class+0x1860/0x1860
 ? kasan_save_stack+0x1e/0x40
 ? kasan_set_free_info+0x20/0x30
 ? ____kasan_slab_free+0x11d/0x1b0
 ? kfree+0x1ba/0x520
 ? devlink_health_do_dump.part.0+0x171/0x3a0
 ? devlink_health_report+0x3d5/0x7e0
 lock_acquire+0x1c1/0x550
 ? devlink_health_report+0x2f1/0x7e0
 ? lockdep_hardirqs_on_prepare+0x400/0x400
 ? find_held_lock+0x2d/0x110
 __mutex_lock+0x12c/0x14b0
 ? devlink_health_report+0x2f1/0x7e0
 ? devlink_health_report+0x2f1/0x7e0
 ? mutex_lock_io_nested+0x1320/0x1320
 ? trace_hardirqs_on+0x2d/0x100
 ? bit_wait_io_timeout+0x170/0x170
 ? devlink_health_do_dump.part.0+0x171/0x3a0
 ? kfree+0x1ba/0x520
 ? devlink_health_do_dump.part.0+0x171/0x3a0
 devlink_health_report+0x2f1/0x7e0
 mlx5e_health_report+0xc9/0xd7 [mlx5_core]
 mlx5e_reporter_tx_timeout+0x2ab/0x3d0 [mlx5_core]
 ? lockdep_hardirqs_on_prepare+0x400/0x400
 ? mlx5e_reporter_tx_err_cqe+0x1b0/0x1b0 [mlx5_core]
 ? mlx5e_tx_reporter_timeout_dump+0x70/0x70 [mlx5_core]
 ? mlx5e_tx_reporter_dump_sq+0x320/0x320 [mlx5_core]
 ? mlx5e_tx_timeout_work+0x70/0x280 [mlx5_core]
 ? mutex_lock_io_nested+0x1320/0x1320
 ? process_one_work+0x70f/0x1340
 ? lockdep_hardirqs_on_prepare+0x400/0x400
 ? lock_downgrade+0x6e0/0x6e0
 mlx5e_tx_timeout_work+0x1c1/0x280 [mlx5_core]
 process_one_work+0x7c2/0x1340
 ? lockdep_hardirqs_on_prepare+0x400/0x400
 ? pwq_dec_nr_in_flight+0x230/0x230
 ? rwlock_bug.part.0+0x90/0x90
 worker_thread+0x59d/0xec0
 ? process_one_work+0x1340/0x1340
 kthread+0x28f/0x330
 ? kthread_complete_and_exit+0x20/0x20
 ret_from_fork+0x1f/0x30
 </TASK>

Fixes: c90005b5f75c ("devlink: Hold the instance lock in health callbacks")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h  |  1 +
 .../net/ethernet/mellanox/mlx5/core/en_main.c | 27 ++++++++++++++++---
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index b2a5da9739d2..729a11b5fb25 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -826,6 +826,7 @@ enum {
 	MLX5E_STATE_DESTROYING,
 	MLX5E_STATE_XDP_TX_ENABLED,
 	MLX5E_STATE_XDP_ACTIVE,
+	MLX5E_STATE_CHANNELS_ACTIVE,
 };
 
 struct mlx5e_modify_sq_param {
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index ea58c6917433..0c87ddb8a7a2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2731,6 +2731,7 @@ void mlx5e_close_channels(struct mlx5e_channels *chs)
 {
 	int i;
 
+	ASSERT_RTNL();
 	if (chs->ptp) {
 		mlx5e_ptp_close(chs->ptp);
 		chs->ptp = NULL;
@@ -3012,17 +3013,29 @@ void mlx5e_activate_priv_channels(struct mlx5e_priv *priv)
 	if (mlx5e_is_vport_rep(priv))
 		mlx5e_rep_activate_channels(priv);
 
+	set_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state);
+
 	mlx5e_wait_channels_min_rx_wqes(&priv->channels);
 
 	if (priv->rx_res)
 		mlx5e_rx_res_channels_activate(priv->rx_res, &priv->channels);
 }
 
+static void mlx5e_cancel_tx_timeout_work(struct mlx5e_priv *priv)
+{
+	WARN_ON_ONCE(test_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state));
+	if (current_work() != &priv->tx_timeout_work)
+		cancel_work_sync(&priv->tx_timeout_work);
+}
+
 void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv)
 {
 	if (priv->rx_res)
 		mlx5e_rx_res_channels_deactivate(priv->rx_res);
 
+	clear_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state);
+	mlx5e_cancel_tx_timeout_work(priv);
+
 	if (mlx5e_is_vport_rep(priv))
 		mlx5e_rep_deactivate_channels(priv);
 
@@ -4801,8 +4814,17 @@ static void mlx5e_tx_timeout_work(struct work_struct *work)
 	struct net_device *netdev = priv->netdev;
 	int i;
 
-	rtnl_lock();
-	mutex_lock(&priv->state_lock);
+	/* Take rtnl_lock to ensure no change in netdev->real_num_tx_queues
+	 * through this flow. However, channel closing flows have to wait for
+	 * this work to finish while holding rtnl lock too. So either get the
+	 * lock or find that channels are being closed for other reason and
+	 * this work is not relevant anymore.
+	 */
+	while (!rtnl_trylock()) {
+		if (!test_bit(MLX5E_STATE_CHANNELS_ACTIVE, &priv->state))
+			return;
+		msleep(20);
+	}
 
 	if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
 		goto unlock;
@@ -4821,7 +4843,6 @@ static void mlx5e_tx_timeout_work(struct work_struct *work)
 	}
 
 unlock:
-	mutex_unlock(&priv->state_lock);
 	rtnl_unlock();
 }
 
-- 
2.43.0

[net V3 10/15] net/mlx5e: TC, Don't offload post action rule if not supported

[Saeed Mahameed]

From: Chris Mi <cmi@nvidia.com>

If post action is not supported, eg. ignore_flow_level is not
supported, don't offload post action rule. Otherwise, will hit
panic [1].

Fix it by checking if post action table is valid or not.

[1]
[445537.863880] BUG: unable to handle page fault for address: ffffffffffffffb1
[445537.864617] #PF: supervisor read access in kernel mode
[445537.865244] #PF: error_code(0x0000) - not-present page
[445537.865860] PGD 70683a067 P4D 70683a067 PUD 70683c067 PMD 0
[445537.866497] Oops: 0000 [#1] PREEMPT SMP NOPTI
[445537.867077] CPU: 19 PID: 248742 Comm: tc Kdump: loaded Tainted: G           O       6.5.0+ #1
[445537.867888] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[445537.868834] RIP: 0010:mlx5e_tc_post_act_add+0x51/0x130 [mlx5_core]
[445537.869635] Code: c0 0d 00 00 e8 20 96 c6 d3 48 85 c0 0f 84 e5 00 00 00 c7 83 b0 01 00 00 00 00 00 00 49 89 c5 31 c0 31 d2 66 89 83 b4 01 00 00 <49> 8b 44 24 10 83 23 df 83 8b d8 01 00 00 04 48 89 83 c0 01 00 00
[445537.871318] RSP: 0018:ffffb98741cef428 EFLAGS: 00010246
[445537.871962] RAX: 0000000000000000 RBX: ffff8df341167000 RCX: 0000000000000001
[445537.872704] RDX: 0000000000000000 RSI: ffffffff954844e1 RDI: ffffffff9546e9cb
[445537.873430] RBP: ffffb98741cef448 R08: 0000000000000020 R09: 0000000000000246
[445537.874160] R10: 0000000000000000 R11: ffffffff943f73ff R12: ffffffffffffffa1
[445537.874893] R13: ffff8df36d336c20 R14: ffffffffffffffa1 R15: ffff8df341167000
[445537.875628] FS:  00007fcd6564f800(0000) GS:ffff8dfa9ea00000(0000) knlGS:0000000000000000
[445537.876425] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[445537.877090] CR2: ffffffffffffffb1 CR3: 00000003b5884001 CR4: 0000000000770ee0
[445537.877832] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[445537.878564] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[445537.879300] PKRU: 55555554
[445537.879797] Call Trace:
[445537.880263]  <TASK>
[445537.880713]  ? show_regs+0x6e/0x80
[445537.881232]  ? __die+0x29/0x70
[445537.881731]  ? page_fault_oops+0x85/0x160
[445537.882276]  ? search_exception_tables+0x65/0x70
[445537.882852]  ? kernelmode_fixup_or_oops+0xa2/0x120
[445537.883432]  ? __bad_area_nosemaphore+0x18b/0x250
[445537.884019]  ? bad_area_nosemaphore+0x16/0x20
[445537.884566]  ? do_kern_addr_fault+0x8b/0xa0
[445537.885105]  ? exc_page_fault+0xf5/0x1c0
[445537.885623]  ? asm_exc_page_fault+0x2b/0x30
[445537.886149]  ? __kmem_cache_alloc_node+0x1df/0x2a0
[445537.886717]  ? mlx5e_tc_post_act_add+0x51/0x130 [mlx5_core]
[445537.887431]  ? mlx5e_tc_post_act_add+0x30/0x130 [mlx5_core]
[445537.888172]  alloc_flow_post_acts+0xfb/0x1c0 [mlx5_core]
[445537.888849]  parse_tc_actions+0x582/0x5c0 [mlx5_core]
[445537.889505]  parse_tc_fdb_actions+0xd7/0x1f0 [mlx5_core]
[445537.890175]  __mlx5e_add_fdb_flow+0x1ab/0x2b0 [mlx5_core]
[445537.890843]  mlx5e_add_fdb_flow+0x56/0x120 [mlx5_core]
[445537.891491]  ? debug_smp_processor_id+0x1b/0x30
[445537.892037]  mlx5e_tc_add_flow+0x79/0x90 [mlx5_core]
[445537.892676]  mlx5e_configure_flower+0x305/0x450 [mlx5_core]
[445537.893341]  mlx5e_rep_setup_tc_cls_flower+0x3d/0x80 [mlx5_core]
[445537.894037]  mlx5e_rep_setup_tc_cb+0x5c/0xa0 [mlx5_core]
[445537.894693]  tc_setup_cb_add+0xdc/0x220
[445537.895177]  fl_hw_replace_filter+0x15f/0x220 [cls_flower]
[445537.895767]  fl_change+0xe87/0x1190 [cls_flower]
[445537.896302]  tc_new_tfilter+0x484/0xa50

Fixes: f0da4daa3413 ("net/mlx5e: Refactor ct to use post action infrastructure")
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Automatic Verification <verifier@nvidia.com>
Reviewed-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shachar Kagan <skagan@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
---
 .../mellanox/mlx5/core/en/tc/post_act.c       |  6 +++++
 .../net/ethernet/mellanox/mlx5/core/en_tc.c   | 25 ++++++++++++++++---
 2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c
index 4e923a2874ae..86bf007fd05b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/post_act.c
@@ -83,6 +83,9 @@ mlx5e_tc_post_act_offload(struct mlx5e_post_act *post_act,
 	struct mlx5_flow_spec *spec;
 	int err;
 
+	if (IS_ERR(post_act))
+		return PTR_ERR(post_act);
+
 	spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
 	if (!spec)
 		return -ENOMEM;
@@ -111,6 +114,9 @@ mlx5e_tc_post_act_add(struct mlx5e_post_act *post_act, struct mlx5_flow_attr *po
 	struct mlx5e_post_act_handle *handle;
 	int err;
 
+	if (IS_ERR(post_act))
+		return ERR_CAST(post_act);
+
 	handle = kzalloc(sizeof(*handle), GFP_KERNEL);
 	if (!handle)
 		return ERR_PTR(-ENOMEM);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 7ca9e5b86778..4809a66f3491 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -444,6 +444,9 @@ mlx5e_tc_add_flow_meter(struct mlx5e_priv *priv,
 	struct mlx5e_flow_meter_handle *meter;
 	enum mlx5e_post_meter_type type;
 
+	if (IS_ERR(post_act))
+		return PTR_ERR(post_act);
+
 	meter = mlx5e_tc_meter_replace(priv->mdev, &attr->meter_attr.params);
 	if (IS_ERR(meter)) {
 		mlx5_core_err(priv->mdev, "Failed to get flow meter\n");
@@ -3738,6 +3741,20 @@ alloc_flow_post_acts(struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack)
 	return err;
 }
 
+static int
+set_branch_dest_ft(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr)
+{
+	struct mlx5e_post_act *post_act = get_post_action(priv);
+
+	if (IS_ERR(post_act))
+		return PTR_ERR(post_act);
+
+	attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
+	attr->dest_ft = mlx5e_tc_post_act_get_ft(post_act);
+
+	return 0;
+}
+
 static int
 alloc_branch_attr(struct mlx5e_tc_flow *flow,
 		  struct mlx5e_tc_act_branch_ctrl *cond,
@@ -3761,8 +3778,8 @@ alloc_branch_attr(struct mlx5e_tc_flow *flow,
 		break;
 	case FLOW_ACTION_ACCEPT:
 	case FLOW_ACTION_PIPE:
-		attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
-		attr->dest_ft = mlx5e_tc_post_act_get_ft(get_post_action(flow->priv));
+		if (set_branch_dest_ft(flow->priv, attr))
+			goto out_err;
 		break;
 	case FLOW_ACTION_JUMP:
 		if (*jump_count) {
@@ -3771,8 +3788,8 @@ alloc_branch_attr(struct mlx5e_tc_flow *flow,
 			goto out_err;
 		}
 		*jump_count = cond->extval;
-		attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
-		attr->dest_ft = mlx5e_tc_post_act_get_ft(get_post_action(flow->priv));
+		if (set_branch_dest_ft(flow->priv, attr))
+			goto out_err;
 		break;
 	default:
 		err = -EOPNOTSUPP;
-- 
2.43.0

[net V3 11/15] net/mlx5: Nack sync reset request when HotPlug is enabled

[Saeed Mahameed]

From: Moshe Shemesh <moshe@nvidia.com>

Current sync reset flow is not supported when PCIe bridge connected
directly to mlx5 device has HotPlug interrupt enabled and can be
triggered on link state change event. Return nack on reset request in
such case.

Fixes: 92501fa6e421 ("net/mlx5: Ack on sync_reset_request only if PF can do reset_now")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../ethernet/mellanox/mlx5/core/fw_reset.c    | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
index b568988e92e3..c4e19d627da2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c
@@ -325,6 +325,29 @@ static void mlx5_fw_live_patch_event(struct work_struct *work)
 		mlx5_core_err(dev, "Failed to reload FW tracer\n");
 }
 
+#if IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE)
+static int mlx5_check_hotplug_interrupt(struct mlx5_core_dev *dev)
+{
+	struct pci_dev *bridge = dev->pdev->bus->self;
+	u16 reg16;
+	int err;
+
+	if (!bridge)
+		return -EOPNOTSUPP;
+
+	err = pcie_capability_read_word(bridge, PCI_EXP_SLTCTL, &reg16);
+	if (err)
+		return err;
+
+	if ((reg16 & PCI_EXP_SLTCTL_HPIE) && (reg16 & PCI_EXP_SLTCTL_DLLSCE)) {
+		mlx5_core_warn(dev, "FW reset is not supported as HotPlug is enabled\n");
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+#endif
+
 static int mlx5_check_dev_ids(struct mlx5_core_dev *dev, u16 dev_id)
 {
 	struct pci_bus *bridge_bus = dev->pdev->bus;
@@ -357,6 +380,12 @@ static bool mlx5_is_reset_now_capable(struct mlx5_core_dev *dev)
 		return false;
 	}
 
+#if IS_ENABLED(CONFIG_HOTPLUG_PCI_PCIE)
+	err = mlx5_check_hotplug_interrupt(dev);
+	if (err)
+		return false;
+#endif
+
 	err = pci_read_config_word(dev->pdev, PCI_DEVICE_ID, &dev_id);
 	if (err)
 		return false;
-- 
2.43.0

[net V3 12/15] net/mlx5e: Check netdev pointer before checking its net ns

[Saeed Mahameed]

From: Gavin Li <gavinl@nvidia.com>

Previously, when comparing the net namespaces, the case where the netdev
doesn't exist wasn't taken into account, and therefore can cause a crash.
In such a case, the comparing function should return false, as there is no
netdev->net to compare the devlink->net to.

Furthermore, this will result in an attempt to enter switchdev mode
without a netdev to fail, and which is the desired result as there is no
meaning in switchdev mode without a net device.

Fixes: 662404b24a4c ("net/mlx5e: Block entering switchdev mode with ns inconsistency")
Signed-off-by: Gavin Li <gavinl@nvidia.com>
Reviewed-by: Gavi Teitz <gavi@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/eswitch_offloads.c        | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index bf78eeca401b..bb8bcb448ae9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -3653,14 +3653,18 @@ static int esw_inline_mode_to_devlink(u8 mlx5_mode, u8 *mode)
 
 static bool esw_offloads_devlink_ns_eq_netdev_ns(struct devlink *devlink)
 {
+	struct mlx5_core_dev *dev = devlink_priv(devlink);
 	struct net *devl_net, *netdev_net;
-	struct mlx5_eswitch *esw;
-
-	esw = mlx5_devlink_eswitch_nocheck_get(devlink);
-	netdev_net = dev_net(esw->dev->mlx5e_res.uplink_netdev);
-	devl_net = devlink_net(devlink);
+	bool ret = false;
 
-	return net_eq(devl_net, netdev_net);
+	mutex_lock(&dev->mlx5e_res.uplink_netdev_lock);
+	if (dev->mlx5e_res.uplink_netdev) {
+		netdev_net = dev_net(dev->mlx5e_res.uplink_netdev);
+		devl_net = devlink_net(devlink);
+		ret = net_eq(devl_net, netdev_net);
+	}
+	mutex_unlock(&dev->mlx5e_res.uplink_netdev_lock);
+	return ret;
 }
 
 int mlx5_eswitch_block_mode(struct mlx5_core_dev *dev)
-- 
2.43.0

[net V3 13/15] net/mlx5: Fix a NULL vs IS_ERR() check

[Saeed Mahameed]

From: Dan Carpenter <dan.carpenter@linaro.org>

The mlx5_esw_offloads_devlink_port() function returns error pointers, not
NULL.

Fixes: 7bef147a6ab6 ("net/mlx5: Don't skip vport check")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 3ab682bbcf86..1bf7540a65ad 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -1497,7 +1497,7 @@ mlx5e_vport_vf_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
 
 	dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch,
 						 rpriv->rep->vport);
-	if (dl_port) {
+	if (!IS_ERR(dl_port)) {
 		SET_NETDEV_DEVLINK_PORT(netdev, dl_port);
 		mlx5e_rep_vnic_reporter_create(priv, dl_port);
 	}
-- 
2.43.0

[net V3 14/15] net/mlx5e: Correct snprintf truncation handling for fw_version buffer

[Saeed Mahameed]

From: Rahul Rameshbabu <rrameshbabu@nvidia.com>

snprintf returns the length of the formatted string, excluding the trailing
null, without accounting for truncation. This means that is the return
value is greater than or equal to the size parameter, the fw_version string
was truncated.

Reported-by: David Laight <David.Laight@ACULAB.COM>
Closes: https://lore.kernel.org/netdev/81cae734ee1b4cde9b380a9a31006c1a@AcuMS.aculab.com/
Link: https://docs.kernel.org/core-api/kernel-api.html#c.snprintf
Fixes: 41e63c2baa11 ("net/mlx5e: Check return value of snprintf writing to fw_version buffer")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 792a0ea544cd..c7c1b667b105 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -49,7 +49,7 @@ void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv *priv,
 	count = snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 			 "%d.%d.%04d (%.16s)", fw_rev_maj(mdev),
 			 fw_rev_min(mdev), fw_rev_sub(mdev), mdev->board_id);
-	if (count == sizeof(drvinfo->fw_version))
+	if (count >= sizeof(drvinfo->fw_version))
 		snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 			 "%d.%d.%04d", fw_rev_maj(mdev),
 			 fw_rev_min(mdev), fw_rev_sub(mdev));
-- 
2.43.0

[net V3 15/15] net/mlx5e: Correct snprintf truncation handling for fw_version buffer used by representors

[Saeed Mahameed]

From: Rahul Rameshbabu <rrameshbabu@nvidia.com>

snprintf returns the length of the formatted string, excluding the trailing
null, without accounting for truncation. This means that is the return
value is greater than or equal to the size parameter, the fw_version string
was truncated.

Link: https://docs.kernel.org/core-api/kernel-api.html#c.snprintf
Fixes: 1b2bd0c0264f ("net/mlx5e: Check return value of snprintf writing to fw_version buffer for representors")
Signed-off-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 1bf7540a65ad..e92d4f83592e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -78,7 +78,7 @@ static void mlx5e_rep_get_drvinfo(struct net_device *dev,
 	count = snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 			 "%d.%d.%04d (%.16s)", fw_rev_maj(mdev),
 			 fw_rev_min(mdev), fw_rev_sub(mdev), mdev->board_id);
-	if (count == sizeof(drvinfo->fw_version))
+	if (count >= sizeof(drvinfo->fw_version))
 		snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 			 "%d.%d.%04d", fw_rev_maj(mdev),
 			 fw_rev_min(mdev), fw_rev_sub(mdev));
-- 
2.43.0

Re: [pull request][net V3 00/15] mlx5 fixes 2023-12-05

[Jakub Kicinski]

On Tue,  5 Dec 2023 13:45:19 -0800 Saeed Mahameed wrote:
> V2->V3:
>   - Drop commit #8 as requested by Jianbo.
>   - Added two commits from Rahul to fix snprintf return val
> 
> V1->V2:
>   - Drop commit #9 ("net/mlx5e: Forbid devlink reload if IPSec rules are
>     offloaded"), we are working on a better fix
> 
> Please pull and let me know if there is any problem.

Why are you reposting this without waiting 24 hours?

Re: [pull request][net V3 00/15] mlx5 fixes 2023-12-05

[Saeed Mahameed]

On 05 Dec 14:48, Jakub Kicinski wrote:
>On Tue,  5 Dec 2023 13:45:19 -0800 Saeed Mahameed wrote:
>> V2->V3:
>>   - Drop commit #8 as requested by Jianbo.
>>   - Added two commits from Rahul to fix snprintf return val
>>
>> V1->V2:
>>   - Drop commit #9 ("net/mlx5e: Forbid devlink reload if IPSec rules are
>>     offloaded"), we are working on a better fix
>>
>> Please pull and let me know if there is any problem.
>
>Why are you reposting this without waiting 24 hours?

V1 is more than a week old.
V2->V3 which you have an issue with, has no change other than removing 1
patch and adding 2 more patches that were already reviewed on the list
for more than a week as well.

This is a PR of patches that were already reviewed on the list for way
more than 24hours.

Anyway, do you want me to RESEND ?

Thanks,
Saeed.

Re: [pull request][net V3 00/15] mlx5 fixes 2023-12-05

[Jakub Kicinski]

On Wed, 6 Dec 2023 12:58:13 -0800 Saeed Mahameed wrote:
> V1 is more than a week old.
> V2->V3 which you have an issue with, has no change other than removing
> 1 patch and adding 2 more patches that were already reviewed on the list
> for more than a week as well.
> 
> This is a PR of patches that were already reviewed on the list for way
> more than 24hours.

The same rules for everybody. Please don't repost within 24h,
unless someone of import tells you to.

> Anyway, do you want me to RESEND ?

I guess that'd be counter-productive. I'll revive it tomorrow,
no need for a resend.
-- 
pv-bot: 24h

Re: [pull request][net V3 00/15] mlx5 fixes 2023-12-05

[Saeed Mahameed]

On 06 Dec 18:41, Jakub Kicinski wrote:
>On Wed, 6 Dec 2023 12:58:13 -0800 Saeed Mahameed wrote:
>> V1 is more than a week old.
>> V2->V3 which you have an issue with, has no change other than removing
>> 1 patch and adding 2 more patches that were already reviewed on the list
>> for more than a week as well.
>>
>> This is a PR of patches that were already reviewed on the list for way
>> more than 24hours.
>
>The same rules for everybody. Please don't repost within 24h,
>unless someone of import tells you to.
>

Ack.

>> Anyway, do you want me to RESEND ?
>
>I guess that'd be counter-productive. I'll revive it tomorrow,
>no need for a resend.

Thanks !

>-- 
>pv-bot: 24h

Re: [net V3 01/15] net/mlx5e: Honor user choice of IPsec replay window size

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net.git (main)
by Saeed Mahameed <saeedm@nvidia.com>:

On Tue,  5 Dec 2023 13:45:20 -0800 you wrote:
> From: Leon Romanovsky <leonro@nvidia.com>
> 
> Users can configure IPsec replay window size, but mlx5 driver didn't
> honor their choice and set always 32bits. Fix assignment logic to
> configure right size from the beginning.
> 
> Fixes: 7db21ef4566e ("net/mlx5e: Set IPsec replay sequence numbers")
> Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
> Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
> 
> [...]

Here is the summary with links:
  - [net,V3,01/15] net/mlx5e: Honor user choice of IPsec replay window size
    https://git.kernel.org/netdev/net/c/a5e400a985df
  - [net,V3,02/15] net/mlx5e: Ensure that IPsec sequence packet number starts from 1
    https://git.kernel.org/netdev/net/c/3d42c8cc67a8
  - [net,V3,03/15] net/mlx5e: Unify esw and normal IPsec status table creation/destruction
    https://git.kernel.org/netdev/net/c/94af50c0a9bb
  - [net,V3,04/15] net/mlx5e: Remove exposure of IPsec RX flow steering struct
    https://git.kernel.org/netdev/net/c/5ad00dee43b9
  - [net,V3,05/15] net/mlx5e: Add IPsec and ASO syndromes check in HW
    https://git.kernel.org/netdev/net/c/dddb49b63d86
  - [net,V3,06/15] net/mlx5e: Tidy up IPsec NAT-T SA discovery
    https://git.kernel.org/netdev/net/c/c2bf84f1d1a1
  - [net,V3,07/15] net/mlx5e: Reduce eswitch mode_lock protection context
    https://git.kernel.org/netdev/net/c/baac8351f74c
  - [net,V3,08/15] net/mlx5e: Disable IPsec offload support if not FW steering
    https://git.kernel.org/netdev/net/c/762a55a54eec
  - [net,V3,09/15] net/mlx5e: Fix possible deadlock on mlx5e_tx_timeout_work
    https://git.kernel.org/netdev/net/c/eab0da38912e
  - [net,V3,10/15] net/mlx5e: TC, Don't offload post action rule if not supported
    https://git.kernel.org/netdev/net/c/ccbe33003b10
  - [net,V3,11/15] net/mlx5: Nack sync reset request when HotPlug is enabled
    https://git.kernel.org/netdev/net/c/3d7a3f2612d7
  - [net,V3,12/15] net/mlx5e: Check netdev pointer before checking its net ns
    https://git.kernel.org/netdev/net/c/7aaf975238c4
  - [net,V3,13/15] net/mlx5: Fix a NULL vs IS_ERR() check
    https://git.kernel.org/netdev/net/c/ca4ef28d0ad8
  - [net,V3,14/15] net/mlx5e: Correct snprintf truncation handling for fw_version buffer
    (no matching commit)
  - [net,V3,15/15] net/mlx5e: Correct snprintf truncation handling for fw_version buffer used by representors
    (no matching commit)

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