Merge tag 'ipsec-libreswan-mlx5' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

Leon Romanovsky says:

====================
Extend packet offload to fully support libreswan

The following patches are an outcome of Raed's work to add packet
offload support to libreswan [1].

The series includes:
 * Priority support to IPsec policies
 * Statistics per-SA (visible through "ip -s xfrm state ..." command)
 * Support to IKE policy holes
 * Fine tuning to acquire logic.

[1] https://github.com/libreswan/libreswan/pull/986
Link: https://lore.kernel.org/all/cover.1678714336.git.leon@kernel.org

* tag 'ipsec-libreswan-mlx5' of https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux:
  net/mlx5e: Update IPsec per SA packets/bytes count
  net/mlx5e: Use one rule to count all IPsec Tx offloaded traffic
  net/mlx5e: Support IPsec acquire default SA
  net/mlx5e: Allow policies with reqid 0, to support IKE policy holes
  xfrm: copy_to_user_state fetch offloaded SA packets/bytes statistics
  xfrm: add new device offload acquire flag
  net/mlx5e: Use chains for IPsec policy priority offload
  net/mlx5: fs_core: Allow ignore_flow_level on TX dest
  net/mlx5: fs_chains: Refactor to detach chains from tc usage
====================

Link: https://lore.kernel.org/r/20230320094722.1009304-1-leon@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.c

@@ -308,6 +308,7 @@ static int mlx5e_xfrm_add_state(struct xfrm_state *x,
 	struct net_device *netdev = x->xso.real_dev;
 	struct mlx5e_ipsec *ipsec;
 	struct mlx5e_priv *priv;
+	gfp_t gfp;
 	int err;
 
 	priv = netdev_priv(netdev);
@@ -315,16 +316,20 @@ static int mlx5e_xfrm_add_state(struct xfrm_state *x,
 		return -EOPNOTSUPP;
 
 	ipsec = priv->ipsec;
-	err = mlx5e_xfrm_validate_state(priv->mdev, x, extack);
-	if (err)
-		return err;
-
-	sa_entry = kzalloc(sizeof(*sa_entry), GFP_KERNEL);
+	gfp = (x->xso.flags & XFRM_DEV_OFFLOAD_FLAG_ACQ) ? GFP_ATOMIC : GFP_KERNEL;
+	sa_entry = kzalloc(sizeof(*sa_entry), gfp);
 	if (!sa_entry)
 		return -ENOMEM;
 
 	sa_entry->x = x;
 	sa_entry->ipsec = ipsec;
+	/* Check if this SA is originated from acquire flow temporary SA */
+	if (x->xso.flags & XFRM_DEV_OFFLOAD_FLAG_ACQ)
+		goto out;
+
+	err = mlx5e_xfrm_validate_state(priv->mdev, x, extack);
+	if (err)
+		goto err_xfrm;
 
 	/* check esn */
 	mlx5e_ipsec_update_esn_state(sa_entry);
@@ -353,6 +358,7 @@ static int mlx5e_xfrm_add_state(struct xfrm_state *x,
 				mlx5e_ipsec_set_iv_esn : mlx5e_ipsec_set_iv;
 
 	INIT_WORK(&sa_entry->modify_work.work, _update_xfrm_state);
+out:
 	x->xso.offload_handle = (unsigned long)sa_entry;
 	return 0;
 
@@ -372,6 +378,9 @@ static void mlx5e_xfrm_del_state(struct xfrm_state *x)
 	struct mlx5e_ipsec *ipsec = sa_entry->ipsec;
 	struct mlx5e_ipsec_sa_entry *old;
 
+	if (x->xso.flags & XFRM_DEV_OFFLOAD_FLAG_ACQ)
+		return;
+
 	old = xa_erase_bh(&ipsec->sadb, sa_entry->ipsec_obj_id);
 	WARN_ON(old != sa_entry);
 }
@@ -380,9 +389,13 @@ static void mlx5e_xfrm_free_state(struct xfrm_state *x)
 {
 	struct mlx5e_ipsec_sa_entry *sa_entry = to_ipsec_sa_entry(x);
 
+	if (x->xso.flags & XFRM_DEV_OFFLOAD_FLAG_ACQ)
+		goto sa_entry_free;
+
 	cancel_work_sync(&sa_entry->modify_work.work);
 	mlx5e_accel_ipsec_fs_del_rule(sa_entry);
 	mlx5_ipsec_free_sa_ctx(sa_entry);
+sa_entry_free:
 	kfree(sa_entry);
 }
 
@@ -482,26 +495,26 @@ static void mlx5e_xfrm_advance_esn_state(struct xfrm_state *x)
 static void mlx5e_xfrm_update_curlft(struct xfrm_state *x)
 {
 	struct mlx5e_ipsec_sa_entry *sa_entry = to_ipsec_sa_entry(x);
-	int err;
+	struct mlx5e_ipsec_rule *ipsec_rule = &sa_entry->ipsec_rule;
+	u64 packets, bytes, lastuse;
 
-	lockdep_assert_held(&x->lock);
+	lockdep_assert(lockdep_is_held(&x->lock) ||
+		       lockdep_is_held(&dev_net(x->xso.real_dev)->xfrm.xfrm_cfg_mutex));
 
-	if (sa_entry->attrs.soft_packet_limit == XFRM_INF)
-		/* Limits are not configured, as soft limit
-		 * must be lowever than hard limit.
-		 */
+	if (x->xso.flags & XFRM_DEV_OFFLOAD_FLAG_ACQ)
 		return;
 
-	err = mlx5e_ipsec_aso_query(sa_entry, NULL);
-	if (err)
-		return;
-
-	mlx5e_ipsec_aso_update_curlft(sa_entry, &x->curlft.packets);
+	mlx5_fc_query_cached(ipsec_rule->fc, &bytes, &packets, &lastuse);
+	x->curlft.packets += packets;
+	x->curlft.bytes += bytes;
 }
 
-static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x,
+static int mlx5e_xfrm_validate_policy(struct mlx5_core_dev *mdev,
+				      struct xfrm_policy *x,
 				      struct netlink_ext_ack *extack)
 {
+	struct xfrm_selector *sel = &x->selector;
+
 	if (x->type != XFRM_POLICY_TYPE_MAIN) {
 		NL_SET_ERR_MSG_MOD(extack, "Cannot offload non-main policy types");
 		return -EINVAL;
@@ -519,8 +532,9 @@ static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x,
 		return -EINVAL;
 	}
 
-	if (!x->xfrm_vec[0].reqid) {
-		NL_SET_ERR_MSG_MOD(extack, "Cannot offload policy without reqid");
+	if (!x->xfrm_vec[0].reqid && sel->proto == IPPROTO_IP &&
+	    addr6_all_zero(sel->saddr.a6) && addr6_all_zero(sel->daddr.a6)) {
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported policy with reqid 0 without at least one of upper protocol or ip addr(s) different than 0");
 		return -EINVAL;
 	}
 
@@ -529,12 +543,24 @@ static int mlx5e_xfrm_validate_policy(struct xfrm_policy *x,
 		return -EINVAL;
 	}
 
-	if (x->selector.proto != IPPROTO_IP &&
-	    (x->selector.proto != IPPROTO_UDP || x->xdo.dir != XFRM_DEV_OFFLOAD_OUT)) {
+	if (sel->proto != IPPROTO_IP &&
+	    (sel->proto != IPPROTO_UDP || x->xdo.dir != XFRM_DEV_OFFLOAD_OUT)) {
 		NL_SET_ERR_MSG_MOD(extack, "Device does not support upper protocol other than UDP, and only Tx direction");
 		return -EINVAL;
 	}
 
+	if (x->priority) {
+		if (!(mlx5_ipsec_device_caps(mdev) & MLX5_IPSEC_CAP_PRIO)) {
+			NL_SET_ERR_MSG_MOD(extack, "Device does not support policy priority");
+			return -EINVAL;
+		}
+
+		if (x->priority == U32_MAX) {
+			NL_SET_ERR_MSG_MOD(extack, "Device does not support requested policy priority");
+			return -EINVAL;
+		}
+	}
+
 	return 0;
 }
 
@@ -560,6 +586,7 @@ mlx5e_ipsec_build_accel_pol_attrs(struct mlx5e_ipsec_pol_entry *pol_entry,
 	attrs->upspec.sport = ntohs(sel->sport);
 	attrs->upspec.sport_mask = ntohs(sel->sport_mask);
 	attrs->upspec.proto = sel->proto;
+	attrs->prio = x->priority;
 }
 
 static int mlx5e_xfrm_add_policy(struct xfrm_policy *x,
@@ -576,7 +603,7 @@ static int mlx5e_xfrm_add_policy(struct xfrm_policy *x,
 		return -EOPNOTSUPP;
 	}
 
-	err = mlx5e_xfrm_validate_policy(x, extack);
+	err = mlx5e_xfrm_validate_policy(priv->mdev, x, extack);
 	if (err)
 		return err;
 

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec.h

@@ -94,6 +94,7 @@ enum mlx5_ipsec_cap {
 	MLX5_IPSEC_CAP_ESN		= 1 << 1,
 	MLX5_IPSEC_CAP_PACKET_OFFLOAD	= 1 << 2,
 	MLX5_IPSEC_CAP_ROCE             = 1 << 3,
+	MLX5_IPSEC_CAP_PRIO             = 1 << 4,
 };
 
 struct mlx5e_priv;
@@ -161,6 +162,7 @@ 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_modify_state_work {
@@ -198,6 +200,7 @@ struct mlx5_accel_pol_xfrm_attrs {
 	u8 type : 2;
 	u8 dir : 2;
 	u32 reqid;
+	u32 prio;
 };
 
 struct mlx5e_ipsec_pol_entry {
@@ -233,9 +236,6 @@ void mlx5e_ipsec_aso_cleanup(struct mlx5e_ipsec *ipsec);
 
 int mlx5e_ipsec_aso_query(struct mlx5e_ipsec_sa_entry *sa_entry,
 			  struct mlx5_wqe_aso_ctrl_seg *data);
-void mlx5e_ipsec_aso_update_curlft(struct mlx5e_ipsec_sa_entry *sa_entry,
-				   u64 *packets);
-
 void mlx5e_accel_ipsec_fs_read_stats(struct mlx5e_priv *priv,
 				     void *ipsec_stats);
 
@@ -252,6 +252,13 @@ mlx5e_ipsec_pol2dev(struct mlx5e_ipsec_pol_entry *pol_entry)
 {
 	return pol_entry->ipsec->mdev;
 }
+
+static inline bool addr6_all_zero(__be32 *addr6)
+{
+	static const __be32 zaddr6[4] = {};
+
+	return !memcmp(addr6, zaddr6, sizeof(*zaddr6));
+}
 #else
 static inline void mlx5e_ipsec_init(struct mlx5e_priv *priv)
 {

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_offload.c

@@ -36,11 +36,18 @@ 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) &&
-	    MLX5_CAP_FLOWTABLE_NIC_TX(mdev, reformat_add_esp_trasport) &&
-	    MLX5_CAP_FLOWTABLE_NIC_RX(mdev, reformat_del_esp_trasport) &&
-	    MLX5_CAP_FLOWTABLE_NIC_RX(mdev, decap))
-		caps |= MLX5_IPSEC_CAP_PACKET_OFFLOAD;
+	if (MLX5_CAP_IPSEC(mdev, ipsec_full_offload)) {
+		if (MLX5_CAP_FLOWTABLE_NIC_TX(mdev,
+					      reformat_add_esp_trasport) &&
+		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
+					      reformat_del_esp_trasport) &&
+		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev, decap))
+			caps |= MLX5_IPSEC_CAP_PACKET_OFFLOAD;
+
+		if (MLX5_CAP_FLOWTABLE_NIC_TX(mdev, ignore_flow_level) &&
+		    MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ignore_flow_level))
+			caps |= MLX5_IPSEC_CAP_PRIO;
+	}
 
 	if (mlx5_get_roce_state(mdev) &&
 	    MLX5_CAP_GEN_2(mdev, flow_table_type_2_type) & MLX5_FT_NIC_RX_2_NIC_RX_RDMA &&
@@ -482,18 +489,3 @@ int mlx5e_ipsec_aso_query(struct mlx5e_ipsec_sa_entry *sa_entry,
 	spin_unlock_bh(&aso->lock);
 	return ret;
 }
-
-void mlx5e_ipsec_aso_update_curlft(struct mlx5e_ipsec_sa_entry *sa_entry,
-				   u64 *packets)
-{
-	struct mlx5e_ipsec *ipsec = sa_entry->ipsec;
-	struct mlx5e_ipsec_aso *aso = ipsec->aso;
-	u64 hard_cnt;
-
-	hard_cnt = MLX5_GET(ipsec_aso, aso->ctx, remove_flow_pkt_cnt);
-	/* HW decresases the limit till it reaches zero to fire an avent.
-	 * We need to fix the calculations, so the returned count is a total
-	 * number of passed packets and not how much left.
-	 */
-	*packets = sa_entry->attrs.hard_packet_limit - hard_cnt;
-}

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

@@ -5181,22 +5181,6 @@ static int mlx5e_tc_netdev_event(struct notifier_block *this,
 	return NOTIFY_DONE;
 }
 
-static int mlx5e_tc_nic_get_ft_size(struct mlx5_core_dev *dev)
-{
-	int tc_grp_size, tc_tbl_size;
-	u32 max_flow_counter;
-
-	max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
-			    MLX5_CAP_GEN(dev, max_flow_counter_15_0);
-
-	tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
-
-	tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
-			    BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
-
-	return tc_tbl_size;
-}
-
 static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv)
 {
 	struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
@@ -5269,10 +5253,10 @@ int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
 		attr.flags = MLX5_CHAINS_AND_PRIOS_SUPPORTED |
 			MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED;
 	attr.ns = MLX5_FLOW_NAMESPACE_KERNEL;
-	attr.max_ft_sz = mlx5e_tc_nic_get_ft_size(dev);
 	attr.max_grp_num = MLX5E_TC_TABLE_NUM_GROUPS;
 	attr.default_ft = tc->miss_t;
 	attr.mapping = chains_mapping;
+	attr.fs_base_prio = MLX5E_TC_PRIO;
 
 	tc->chains = mlx5_chains_create(dev, &attr);
 	if (IS_ERR(tc->chains)) {
@@ -5280,6 +5264,8 @@ int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
 		goto err_miss;
 	}
 
+	mlx5_chains_print_info(tc->chains);
+
 	tc->post_act = mlx5e_tc_post_act_init(priv, tc->chains, MLX5_FLOW_NAMESPACE_KERNEL);
 	tc->ct = mlx5_tc_ct_init(priv, tc->chains, &tc->mod_hdr,
 				 MLX5_FLOW_NAMESPACE_KERNEL, tc->post_act);

drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c

@@ -1374,14 +1374,11 @@ esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
 	struct mlx5_flow_table *nf_ft, *ft;
 	struct mlx5_chains_attr attr = {};
 	struct mlx5_fs_chains *chains;
-	u32 fdb_max;
 	int err;
 
-	fdb_max = 1 << MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size);
-
 	esw_init_chains_offload_flags(esw, &attr.flags);
 	attr.ns = MLX5_FLOW_NAMESPACE_FDB;
-	attr.max_ft_sz = fdb_max;
+	attr.fs_base_prio = FDB_TC_OFFLOAD;
 	attr.max_grp_num = esw->params.large_group_num;
 	attr.default_ft = miss_fdb;
 	attr.mapping = esw->offloads.reg_c0_obj_pool;
@@ -1392,6 +1389,7 @@ esw_chains_create(struct mlx5_eswitch *esw, struct mlx5_flow_table *miss_fdb)
 		esw_warn(dev, "Failed to create fdb chains err(%d)\n", err);
 		return err;
 	}
+	mlx5_chains_print_info(chains);
 
 	esw->fdb_table.offloads.esw_chains_priv = chains;
 

drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

@@ -137,7 +137,7 @@
 #define LAG_MIN_LEVEL (OFFLOADS_MIN_LEVEL + KERNEL_RX_MACSEC_MIN_LEVEL + 1)
 
 #define KERNEL_TX_IPSEC_NUM_PRIOS  1
-#define KERNEL_TX_IPSEC_NUM_LEVELS 2
+#define KERNEL_TX_IPSEC_NUM_LEVELS 3
 #define KERNEL_TX_IPSEC_MIN_LEVEL        (KERNEL_TX_IPSEC_NUM_LEVELS)
 
 #define KERNEL_TX_MACSEC_NUM_PRIOS  1
@@ -1762,7 +1762,8 @@ static bool dest_is_valid(struct mlx5_flow_destination *dest,
 
 	if (ignore_level) {
 		if (ft->type != FS_FT_FDB &&
-		    ft->type != FS_FT_NIC_RX)
+		    ft->type != FS_FT_NIC_RX &&
+		    ft->type != FS_FT_NIC_TX)
 			return false;
 
 		if (dest->type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE &&

drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.c

@@ -14,10 +14,8 @@
 #define chains_lock(chains) ((chains)->lock)
 #define chains_ht(chains) ((chains)->chains_ht)
 #define prios_ht(chains) ((chains)->prios_ht)
-#define tc_default_ft(chains) ((chains)->tc_default_ft)
-#define tc_end_ft(chains) ((chains)->tc_end_ft)
-#define ns_to_chains_fs_prio(ns) ((ns) == MLX5_FLOW_NAMESPACE_FDB ? \
-				  FDB_TC_OFFLOAD : MLX5E_TC_PRIO)
+#define chains_default_ft(chains) ((chains)->chains_default_ft)
+#define chains_end_ft(chains) ((chains)->chains_end_ft)
 #define FT_TBL_SZ (64 * 1024)
 
 struct mlx5_fs_chains {
@@ -28,13 +26,15 @@ struct mlx5_fs_chains {
 	/* Protects above chains_ht and prios_ht */
 	struct mutex lock;
 
-	struct mlx5_flow_table *tc_default_ft;
-	struct mlx5_flow_table *tc_end_ft;
+	struct mlx5_flow_table *chains_default_ft;
+	struct mlx5_flow_table *chains_end_ft;
 	struct mapping_ctx *chains_mapping;
 
 	enum mlx5_flow_namespace_type ns;
 	u32 group_num;
 	u32 flags;
+	int fs_base_prio;
+	int fs_base_level;
 };
 
 struct fs_chain {
@@ -145,7 +145,7 @@ void
 mlx5_chains_set_end_ft(struct mlx5_fs_chains *chains,
 		       struct mlx5_flow_table *ft)
 {
-	tc_end_ft(chains) = ft;
+	chains_end_ft(chains) = ft;
 }
 
 static struct mlx5_flow_table *
@@ -164,11 +164,11 @@ mlx5_chains_create_table(struct mlx5_fs_chains *chains,
 	sz = (chain == mlx5_chains_get_nf_ft_chain(chains)) ? FT_TBL_SZ : POOL_NEXT_SIZE;
 	ft_attr.max_fte = sz;
 
-	/* We use tc_default_ft(chains) as the table's next_ft till
+	/* We use chains_default_ft(chains) as the table's next_ft till
 	 * ignore_flow_level is allowed on FT creation and not just for FTEs.
 	 * Instead caller should add an explicit miss rule if needed.
 	 */
-	ft_attr.next_ft = tc_default_ft(chains);
+	ft_attr.next_ft = chains_default_ft(chains);
 
 	/* The root table(chain 0, prio 1, level 0) is required to be
 	 * connected to the previous fs_core managed prio.
@@ -177,22 +177,22 @@ mlx5_chains_create_table(struct mlx5_fs_chains *chains,
 	 */
 	if (!mlx5_chains_ignore_flow_level_supported(chains) ||
 	    (chain == 0 && prio == 1 && level == 0)) {
-		ft_attr.level = level;
-		ft_attr.prio = prio - 1;
+		ft_attr.level = chains->fs_base_level;
+		ft_attr.prio = chains->fs_base_prio;
 		ns = (chains->ns == MLX5_FLOW_NAMESPACE_FDB) ?
 			mlx5_get_fdb_sub_ns(chains->dev, chain) :
 			mlx5_get_flow_namespace(chains->dev, chains->ns);
 	} else {
 		ft_attr.flags |= MLX5_FLOW_TABLE_UNMANAGED;
-		ft_attr.prio = ns_to_chains_fs_prio(chains->ns);
+		ft_attr.prio = chains->fs_base_prio;
 		/* Firmware doesn't allow us to create another level 0 table,
-		 * so we create all unmanaged tables as level 1.
+		 * so we create all unmanaged tables as level 1 (base + 1).
 		 *
 		 * To connect them, we use explicit miss rules with
 		 * ignore_flow_level. Caller is responsible to create
 		 * these rules (if needed).
 		 */
-		ft_attr.level = 1;
+		ft_attr.level = chains->fs_base_level + 1;
 		ns = mlx5_get_flow_namespace(chains->dev, chains->ns);
 	}
 
@@ -220,7 +220,8 @@ create_chain_restore(struct fs_chain *chain)
 	int err;
 
 	if (chain->chain == mlx5_chains_get_nf_ft_chain(chains) ||
-	    !mlx5_chains_prios_supported(chains))
+	    !mlx5_chains_prios_supported(chains) ||
+	    !chains->chains_mapping)
 		return 0;
 
 	err = mlx5_chains_get_chain_mapping(chains, chain->chain, &index);
@@ -380,7 +381,7 @@ mlx5_chains_add_miss_rule(struct fs_chain *chain,
 	dest.type  = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 	dest.ft = next_ft;
 
-	if (next_ft == tc_end_ft(chains) &&
+	if (chains->chains_mapping && next_ft == chains_end_ft(chains) &&
 	    chain->chain != mlx5_chains_get_nf_ft_chain(chains) &&
 	    mlx5_chains_prios_supported(chains)) {
 		act.modify_hdr = chain->miss_modify_hdr;
@@ -494,8 +495,8 @@ mlx5_chains_create_prio(struct mlx5_fs_chains *chains,
 
 	/* Default miss for each chain: */
 	next_ft = (chain == mlx5_chains_get_nf_ft_chain(chains)) ?
-		  tc_default_ft(chains) :
-		  tc_end_ft(chains);
+		  chains_default_ft(chains) :
+		  chains_end_ft(chains);
 	list_for_each(pos, &chain_s->prios_list) {
 		struct prio *p = list_entry(pos, struct prio, list);
 
@@ -681,7 +682,7 @@ mlx5_chains_put_table(struct mlx5_fs_chains *chains, u32 chain, u32 prio,
 struct mlx5_flow_table *
 mlx5_chains_get_tc_end_ft(struct mlx5_fs_chains *chains)
 {
-	return tc_end_ft(chains);
+	return chains_end_ft(chains);
 }
 
 struct mlx5_flow_table *
@@ -718,48 +719,38 @@ mlx5_chains_destroy_global_table(struct mlx5_fs_chains *chains,
 static struct mlx5_fs_chains *
 mlx5_chains_init(struct mlx5_core_dev *dev, struct mlx5_chains_attr *attr)
 {
-	struct mlx5_fs_chains *chains_priv;
-	u32 max_flow_counter;
+	struct mlx5_fs_chains *chains;
 	int err;
 
-	chains_priv = kzalloc(sizeof(*chains_priv), GFP_KERNEL);
-	if (!chains_priv)
+	chains = kzalloc(sizeof(*chains), GFP_KERNEL);
+	if (!chains)
 		return ERR_PTR(-ENOMEM);
 
-	max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
-			    MLX5_CAP_GEN(dev, max_flow_counter_15_0);
-
-	mlx5_core_dbg(dev,
-		      "Init flow table chains, max counters(%d), groups(%d), max flow table size(%d)\n",
-		      max_flow_counter, attr->max_grp_num, attr->max_ft_sz);
-
-	chains_priv->dev = dev;
-	chains_priv->flags = attr->flags;
-	chains_priv->ns = attr->ns;
-	chains_priv->group_num = attr->max_grp_num;
-	chains_priv->chains_mapping = attr->mapping;
-	tc_default_ft(chains_priv) = tc_end_ft(chains_priv) = attr->default_ft;
+	chains->dev = dev;
+	chains->flags = attr->flags;
+	chains->ns = attr->ns;
+	chains->group_num = attr->max_grp_num;
+	chains->chains_mapping = attr->mapping;
+	chains->fs_base_prio = attr->fs_base_prio;
+	chains->fs_base_level = attr->fs_base_level;
+	chains_default_ft(chains) = chains_end_ft(chains) = attr->default_ft;
 
-	mlx5_core_info(dev, "Supported tc offload range - chains: %u, prios: %u\n",
-		       mlx5_chains_get_chain_range(chains_priv),
-		       mlx5_chains_get_prio_range(chains_priv));
-
-	err = rhashtable_init(&chains_ht(chains_priv), &chain_params);
+	err = rhashtable_init(&chains_ht(chains), &chain_params);
 	if (err)
 		goto init_chains_ht_err;
 
-	err = rhashtable_init(&prios_ht(chains_priv), &prio_params);
+	err = rhashtable_init(&prios_ht(chains), &prio_params);
 	if (err)
 		goto init_prios_ht_err;
 
-	mutex_init(&chains_lock(chains_priv));
+	mutex_init(&chains_lock(chains));
 
-	return chains_priv;
+	return chains;
 
 init_prios_ht_err:
-	rhashtable_destroy(&chains_ht(chains_priv));
+	rhashtable_destroy(&chains_ht(chains));
 init_chains_ht_err:
-	kfree(chains_priv);
+	kfree(chains);
 	return ERR_PTR(err);
 }
 
@@ -808,3 +799,9 @@ mlx5_chains_put_chain_mapping(struct mlx5_fs_chains *chains, u32 chain_mapping)
 
 	return mapping_remove(ctx, chain_mapping);
 }
+
+void
+mlx5_chains_print_info(struct mlx5_fs_chains *chains)
+{
+	mlx5_core_dbg(chains->dev, "Flow table chains groups(%d)\n", chains->group_num);
+}

drivers/net/ethernet/mellanox/mlx5/core/lib/fs_chains.h

@@ -17,8 +17,9 @@ enum mlx5_chains_flags {
 
 struct mlx5_chains_attr {
 	enum mlx5_flow_namespace_type ns;
+	int fs_base_prio;
+	int fs_base_level;
 	u32 flags;
-	u32 max_ft_sz;
 	u32 max_grp_num;
 	struct mlx5_flow_table *default_ft;
 	struct mapping_ctx *mapping;
@@ -68,6 +69,8 @@ void mlx5_chains_destroy(struct mlx5_fs_chains *chains);
 void
 mlx5_chains_set_end_ft(struct mlx5_fs_chains *chains,
 		       struct mlx5_flow_table *ft);
+void
+mlx5_chains_print_info(struct mlx5_fs_chains *chains);
 
 #else /* CONFIG_MLX5_CLS_ACT */
 
@@ -89,7 +92,9 @@ static inline struct mlx5_fs_chains *
 mlx5_chains_create(struct mlx5_core_dev *dev, struct mlx5_chains_attr *attr)
 { return NULL; }
 static inline void
-mlx5_chains_destroy(struct mlx5_fs_chains *chains) {};
+mlx5_chains_destroy(struct mlx5_fs_chains *chains) {}
+static inline void
+mlx5_chains_print_info(struct mlx5_fs_chains *chains) {}
 
 #endif /* CONFIG_MLX5_CLS_ACT */
 

include/net/xfrm.h

@@ -138,6 +138,10 @@ enum {
 	XFRM_DEV_OFFLOAD_PACKET,
 };
 
+enum {
+	XFRM_DEV_OFFLOAD_FLAG_ACQ = 1,
+};
+
 struct xfrm_dev_offload {
 	struct net_device	*dev;
 	netdevice_tracker	dev_tracker;
@@ -145,6 +149,7 @@ struct xfrm_dev_offload {
 	unsigned long		offload_handle;
 	u8			dir : 2;
 	u8			type : 2;
+	u8			flags : 2;
 };
 
 struct xfrm_mode {

net/xfrm/xfrm_state.c

@@ -1272,6 +1272,7 @@ xfrm_state_find(const xfrm_address_t *daddr, const xfrm_address_t *saddr,
 			xso->dir = xdo->dir;
 			xso->dev = xdo->dev;
 			xso->real_dev = xdo->real_dev;
+			xso->flags = XFRM_DEV_OFFLOAD_FLAG_ACQ;
 			netdev_tracker_alloc(xso->dev, &xso->dev_tracker,
 					     GFP_ATOMIC);
 			error = xso->dev->xfrmdev_ops->xdo_dev_state_add(x, NULL);

net/xfrm/xfrm_user.c

@@ -901,6 +901,8 @@ static void copy_to_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
 	memcpy(&p->id, &x->id, sizeof(p->id));
 	memcpy(&p->sel, &x->sel, sizeof(p->sel));
 	memcpy(&p->lft, &x->lft, sizeof(p->lft));
+	if (x->xso.dev)
+		xfrm_dev_state_update_curlft(x);
 	memcpy(&p->curlft, &x->curlft, sizeof(p->curlft));
 	put_unaligned(x->stats.replay_window, &p->stats.replay_window);
 	put_unaligned(x->stats.replay, &p->stats.replay);