diff options
author | David S. Miller <davem@davemloft.net> | 2017-03-12 23:50:15 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-03-12 23:50:15 -0700 |
commit | 0f230ca9407037ee00205fae1ada8a6cd06ddda2 (patch) | |
tree | f9a84c3fa8b4d56c79d6e149fd3534702bf5ba16 /drivers | |
parent | 27303fcf5734d84c8d018b79d1db154ceaf88df8 (diff) | |
parent | 7c1b8eb175b69add8eac105409d2a59723574675 (diff) | |
download | linux-stable-0f230ca9407037ee00205fae1ada8a6cd06ddda2.tar.gz linux-stable-0f230ca9407037ee00205fae1ada8a6cd06ddda2.tar.bz2 linux-stable-0f230ca9407037ee00205fae1ada8a6cd06ddda2.zip |
Merge branch 'mlxsw-tc-flower-offload-stats'
Jiri Pirko says:
====================
mlxsw: Add support for TC flower offload statistics
Arkadi says:
This patchset adds support for retrieving TC flower statistics for
offloaded rules, which includes packets count, bytes count and last used
time stamp. Currently The statistics are gathered on a per-rule basis.
This patchset also includes generic allocator for counters.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/Makefile | 3 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c | 51 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/reg.h | 65 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/resources.h | 4 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 67 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 20 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c | 143 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c | 42 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c | 198 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.h | 53 | ||||
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c | 49 |
12 files changed, 695 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Makefile b/drivers/net/ethernet/mellanox/mlxsw/Makefile index 6b6c30deee83..95fcacf9c8be 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/Makefile +++ b/drivers/net/ethernet/mellanox/mlxsw/Makefile @@ -15,7 +15,8 @@ obj-$(CONFIG_MLXSW_SPECTRUM) += mlxsw_spectrum.o mlxsw_spectrum-objs := spectrum.o spectrum_buffers.o \ spectrum_switchdev.o spectrum_router.o \ spectrum_kvdl.o spectrum_acl_tcam.o \ - spectrum_acl.o spectrum_flower.o + spectrum_acl.o spectrum_flower.o \ + spectrum_cnt.o mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB) += spectrum_dcb.o obj-$(CONFIG_MLXSW_MINIMAL) += mlxsw_minimal.o mlxsw_minimal-objs := minimal.o diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c index fe3c6ea16a99..a984c361926c 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.c @@ -760,3 +760,54 @@ err_append_action: return err; } EXPORT_SYMBOL(mlxsw_afa_block_append_fwd); + +/* Policing and Counting Action + * ---------------------------- + * Policing and Counting action is used for binding policer and counter + * to ACL rules. + */ + +#define MLXSW_AFA_POLCNT_CODE 0x08 +#define MLXSW_AFA_POLCNT_SIZE 1 + +enum mlxsw_afa_polcnt_counter_set_type { + /* No count */ + MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_NO_COUNT = 0x00, + /* Count packets and bytes */ + MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_PACKETS_BYTES = 0x03, + /* Count only packets */ + MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_PACKETS = 0x05, +}; + +/* afa_polcnt_counter_set_type + * Counter set type for flow counters. + */ +MLXSW_ITEM32(afa, polcnt, counter_set_type, 0x04, 24, 8); + +/* afa_polcnt_counter_index + * Counter index for flow counters. + */ +MLXSW_ITEM32(afa, polcnt, counter_index, 0x04, 0, 24); + +static inline void +mlxsw_afa_polcnt_pack(char *payload, + enum mlxsw_afa_polcnt_counter_set_type set_type, + u32 counter_index) +{ + mlxsw_afa_polcnt_counter_set_type_set(payload, set_type); + mlxsw_afa_polcnt_counter_index_set(payload, counter_index); +} + +int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block, + u32 counter_index) +{ + char *act = mlxsw_afa_block_append_action(block, + MLXSW_AFA_POLCNT_CODE, + MLXSW_AFA_POLCNT_SIZE); + if (!act) + return -ENOBUFS; + mlxsw_afa_polcnt_pack(act, MLXSW_AFA_POLCNT_COUNTER_SET_TYPE_PACKETS_BYTES, + counter_index); + return 0; +} +EXPORT_SYMBOL(mlxsw_afa_block_append_counter); diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h index 6e103ac41d99..a03362c1ef32 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core_acl_flex_actions.h @@ -64,5 +64,7 @@ int mlxsw_afa_block_append_fwd(struct mlxsw_afa_block *block, u8 local_port, bool in_port); int mlxsw_afa_block_append_vlan_modify(struct mlxsw_afa_block *block, u16 vid, u8 pcp, u8 et); +int mlxsw_afa_block_append_counter(struct mlxsw_afa_block *block, + u32 counter_index); #endif diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index eb94a5a4625d..393743c08650 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -5506,6 +5506,70 @@ static inline void mlxsw_reg_mpsc_pack(char *payload, u8 local_port, bool e, mlxsw_reg_mpsc_rate_set(payload, rate); } +/* MGPC - Monitoring General Purpose Counter Set Register + * The MGPC register retrieves and sets the General Purpose Counter Set. + */ +#define MLXSW_REG_MGPC_ID 0x9081 +#define MLXSW_REG_MGPC_LEN 0x18 + +MLXSW_REG_DEFINE(mgpc, MLXSW_REG_MGPC_ID, MLXSW_REG_MGPC_LEN); + +enum mlxsw_reg_mgpc_counter_set_type { + /* No count */ + MLXSW_REG_MGPC_COUNTER_SET_TYPE_NO_COUT = 0x00, + /* Count packets and bytes */ + MLXSW_REG_MGPC_COUNTER_SET_TYPE_PACKETS_BYTES = 0x03, + /* Count only packets */ + MLXSW_REG_MGPC_COUNTER_SET_TYPE_PACKETS = 0x05, +}; + +/* reg_mgpc_counter_set_type + * Counter set type. + * Access: OP + */ +MLXSW_ITEM32(reg, mgpc, counter_set_type, 0x00, 24, 8); + +/* reg_mgpc_counter_index + * Counter index. + * Access: Index + */ +MLXSW_ITEM32(reg, mgpc, counter_index, 0x00, 0, 24); + +enum mlxsw_reg_mgpc_opcode { + /* Nop */ + MLXSW_REG_MGPC_OPCODE_NOP = 0x00, + /* Clear counters */ + MLXSW_REG_MGPC_OPCODE_CLEAR = 0x08, +}; + +/* reg_mgpc_opcode + * Opcode. + * Access: OP + */ +MLXSW_ITEM32(reg, mgpc, opcode, 0x04, 28, 4); + +/* reg_mgpc_byte_counter + * Byte counter value. + * Access: RW + */ +MLXSW_ITEM64(reg, mgpc, byte_counter, 0x08, 0, 64); + +/* reg_mgpc_packet_counter + * Packet counter value. + * Access: RW + */ +MLXSW_ITEM64(reg, mgpc, packet_counter, 0x10, 0, 64); + +static inline void mlxsw_reg_mgpc_pack(char *payload, u32 counter_index, + enum mlxsw_reg_mgpc_opcode opcode, + enum mlxsw_reg_mgpc_counter_set_type set_type) +{ + MLXSW_REG_ZERO(mgpc, payload); + mlxsw_reg_mgpc_counter_index_set(payload, counter_index); + mlxsw_reg_mgpc_counter_set_type_set(payload, set_type); + mlxsw_reg_mgpc_opcode_set(payload, opcode); +} + /* SBPR - Shared Buffer Pools Register * ----------------------------------- * The SBPR configures and retrieves the shared buffer pools and configuration. @@ -5979,6 +6043,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = { MLXSW_REG(mpar), MLXSW_REG(mlcr), MLXSW_REG(mpsc), + MLXSW_REG(mgpc), MLXSW_REG(sbpr), MLXSW_REG(sbcm), MLXSW_REG(sbpm), diff --git a/drivers/net/ethernet/mellanox/mlxsw/resources.h b/drivers/net/ethernet/mellanox/mlxsw/resources.h index bce8c2e00630..905a8e269f87 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/resources.h +++ b/drivers/net/ethernet/mellanox/mlxsw/resources.h @@ -43,7 +43,9 @@ enum mlxsw_res_id { MLXSW_RES_ID_KVD_SINGLE_MIN_SIZE, MLXSW_RES_ID_KVD_DOUBLE_MIN_SIZE, MLXSW_RES_ID_MAX_TRAP_GROUPS, + MLXSW_RES_ID_COUNTER_POOL_SIZE, MLXSW_RES_ID_MAX_SPAN, + MLXSW_RES_ID_COUNTER_SIZE_PACKETS_BYTES, MLXSW_RES_ID_MAX_SYSTEM_PORT, MLXSW_RES_ID_MAX_LAG, MLXSW_RES_ID_MAX_LAG_MEMBERS, @@ -75,7 +77,9 @@ static u16 mlxsw_res_ids[] = { [MLXSW_RES_ID_KVD_SINGLE_MIN_SIZE] = 0x1002, [MLXSW_RES_ID_KVD_DOUBLE_MIN_SIZE] = 0x1003, [MLXSW_RES_ID_MAX_TRAP_GROUPS] = 0x2201, + [MLXSW_RES_ID_COUNTER_POOL_SIZE] = 0x2410, [MLXSW_RES_ID_MAX_SPAN] = 0x2420, + [MLXSW_RES_ID_COUNTER_SIZE_PACKETS_BYTES] = 0x2443, [MLXSW_RES_ID_MAX_SYSTEM_PORT] = 0x2502, [MLXSW_RES_ID_MAX_LAG] = 0x2520, [MLXSW_RES_ID_MAX_LAG_MEMBERS] = 0x2521, diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 2104ee47e965..475499b6c989 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -66,6 +66,7 @@ #include "port.h" #include "trap.h" #include "txheader.h" +#include "spectrum_cnt.h" static const char mlxsw_sp_driver_name[] = "mlxsw_spectrum"; static const char mlxsw_sp_driver_version[] = "1.0"; @@ -138,6 +139,60 @@ MLXSW_ITEM32(tx, hdr, fid, 0x08, 0, 16); */ MLXSW_ITEM32(tx, hdr, type, 0x0C, 0, 4); +int mlxsw_sp_flow_counter_get(struct mlxsw_sp *mlxsw_sp, + unsigned int counter_index, u64 *packets, + u64 *bytes) +{ + char mgpc_pl[MLXSW_REG_MGPC_LEN]; + int err; + + mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_NOP, + MLXSW_REG_MGPC_COUNTER_SET_TYPE_PACKETS_BYTES); + err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl); + if (err) + return err; + *packets = mlxsw_reg_mgpc_packet_counter_get(mgpc_pl); + *bytes = mlxsw_reg_mgpc_byte_counter_get(mgpc_pl); + return 0; +} + +static int mlxsw_sp_flow_counter_clear(struct mlxsw_sp *mlxsw_sp, + unsigned int counter_index) +{ + char mgpc_pl[MLXSW_REG_MGPC_LEN]; + + mlxsw_reg_mgpc_pack(mgpc_pl, counter_index, MLXSW_REG_MGPC_OPCODE_CLEAR, + MLXSW_REG_MGPC_COUNTER_SET_TYPE_PACKETS_BYTES); + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mgpc), mgpc_pl); +} + +int mlxsw_sp_flow_counter_alloc(struct mlxsw_sp *mlxsw_sp, + unsigned int *p_counter_index) +{ + int err; + + err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW, + p_counter_index); + if (err) + return err; + err = mlxsw_sp_flow_counter_clear(mlxsw_sp, *p_counter_index); + if (err) + goto err_counter_clear; + return 0; + +err_counter_clear: + mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW, + *p_counter_index); + return err; +} + +void mlxsw_sp_flow_counter_free(struct mlxsw_sp *mlxsw_sp, + unsigned int counter_index) +{ + mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_FLOW, + counter_index); +} + static void mlxsw_sp_txhdr_construct(struct sk_buff *skb, const struct mlxsw_tx_info *tx_info) { @@ -1379,6 +1434,9 @@ static int mlxsw_sp_setup_tc(struct net_device *dev, u32 handle, mlxsw_sp_flower_destroy(mlxsw_sp_port, ingress, tc->cls_flower); return 0; + case TC_CLSFLOWER_STATS: + return mlxsw_sp_flower_stats(mlxsw_sp_port, ingress, + tc->cls_flower); default: return -EOPNOTSUPP; } @@ -3224,6 +3282,12 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core, goto err_acl_init; } + err = mlxsw_sp_counter_pool_init(mlxsw_sp); + if (err) { + dev_err(mlxsw_sp->bus_info->dev, "Failed to init counter pool\n"); + goto err_counter_pool_init; + } + err = mlxsw_sp_ports_create(mlxsw_sp); if (err) { dev_err(mlxsw_sp->bus_info->dev, "Failed to create ports\n"); @@ -3233,6 +3297,8 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core, return 0; err_ports_create: + mlxsw_sp_counter_pool_fini(mlxsw_sp); +err_counter_pool_init: mlxsw_sp_acl_fini(mlxsw_sp); err_acl_init: mlxsw_sp_span_fini(mlxsw_sp); @@ -3255,6 +3321,7 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core) struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core); mlxsw_sp_ports_remove(mlxsw_sp); + mlxsw_sp_counter_pool_fini(mlxsw_sp); mlxsw_sp_acl_fini(mlxsw_sp); mlxsw_sp_span_fini(mlxsw_sp); mlxsw_sp_router_fini(mlxsw_sp); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index 3bc1b0998654..5502232b06cf 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -246,6 +246,7 @@ struct mlxsw_sp_router { }; struct mlxsw_sp_acl; +struct mlxsw_sp_counter_pool; struct mlxsw_sp { struct { @@ -281,6 +282,7 @@ struct mlxsw_sp { DECLARE_BITMAP(usage, MLXSW_SP_KVD_LINEAR_SIZE); } kvdl; + struct mlxsw_sp_counter_pool *counter_pool; struct { struct mlxsw_sp_span_entry *entries; int entries_count; @@ -586,6 +588,8 @@ struct mlxsw_sp_acl_rule_info { unsigned int priority; struct mlxsw_afk_element_values values; struct mlxsw_afa_block *act_block; + unsigned int counter_index; + bool counter_valid; }; enum mlxsw_sp_acl_profile { @@ -605,6 +609,8 @@ struct mlxsw_sp_acl_profile_ops { void *ruleset_priv, void *rule_priv, struct mlxsw_sp_acl_rule_info *rulei); void (*rule_del)(struct mlxsw_sp *mlxsw_sp, void *rule_priv); + int (*rule_activity_get)(struct mlxsw_sp *mlxsw_sp, void *rule_priv, + bool *activity); }; struct mlxsw_sp_acl_ops { @@ -648,6 +654,8 @@ int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp, int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_rule_info *rulei, u32 action, u16 vid, u16 proto, u8 prio); +int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule_info *rulei); struct mlxsw_sp_acl_rule; @@ -667,6 +675,9 @@ mlxsw_sp_acl_rule_lookup(struct mlxsw_sp *mlxsw_sp, unsigned long cookie); struct mlxsw_sp_acl_rule_info * mlxsw_sp_acl_rule_rulei(struct mlxsw_sp_acl_rule *rule); +int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule *rule, + u64 *packets, u64 *bytes, u64 *last_use); int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp); void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp); @@ -677,5 +688,14 @@ int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress, __be16 protocol, struct tc_cls_flower_offload *f); void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress, struct tc_cls_flower_offload *f); +int mlxsw_sp_flower_stats(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress, + struct tc_cls_flower_offload *f); +int mlxsw_sp_flow_counter_get(struct mlxsw_sp *mlxsw_sp, + unsigned int counter_index, u64 *packets, + u64 *bytes); +int mlxsw_sp_flow_counter_alloc(struct mlxsw_sp *mlxsw_sp, + unsigned int *p_counter_index); +void mlxsw_sp_flow_counter_free(struct mlxsw_sp *mlxsw_sp, + unsigned int counter_index); #endif diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c index 3c5ea7e41db0..4d6920d45026 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c @@ -50,10 +50,17 @@ #include "spectrum_acl_flex_keys.h" struct mlxsw_sp_acl { + struct mlxsw_sp *mlxsw_sp; struct mlxsw_afk *afk; struct mlxsw_afa *afa; const struct mlxsw_sp_acl_ops *ops; struct rhashtable ruleset_ht; + struct list_head rules; + struct { + struct delayed_work dw; + unsigned long interval; /* ms */ +#define MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS 1000 + } rule_activity_update; unsigned long priv[0]; /* priv has to be always the last item */ }; @@ -80,9 +87,13 @@ struct mlxsw_sp_acl_ruleset { struct mlxsw_sp_acl_rule { struct rhash_head ht_node; /* Member of rule HT */ + struct list_head list; unsigned long cookie; /* HT key */ struct mlxsw_sp_acl_ruleset *ruleset; struct mlxsw_sp_acl_rule_info *rulei; + u64 last_used; + u64 last_packets; + u64 last_bytes; unsigned long priv[0]; /* priv has to be always the last item */ }; @@ -238,6 +249,27 @@ void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset); } +static int +mlxsw_sp_acl_rulei_counter_alloc(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule_info *rulei) +{ + int err; + + err = mlxsw_sp_flow_counter_alloc(mlxsw_sp, &rulei->counter_index); + if (err) + return err; + rulei->counter_valid = true; + return 0; +} + +static void +mlxsw_sp_acl_rulei_counter_free(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule_info *rulei) +{ + rulei->counter_valid = false; + mlxsw_sp_flow_counter_free(mlxsw_sp, rulei->counter_index); +} + struct mlxsw_sp_acl_rule_info * mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl) { @@ -364,6 +396,13 @@ int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp, } } +int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule_info *rulei) +{ + return mlxsw_afa_block_append_counter(rulei->act_block, + rulei->counter_index); +} + struct mlxsw_sp_acl_rule * mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_ruleset *ruleset, @@ -387,8 +426,14 @@ mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp, err = PTR_ERR(rule->rulei); goto err_rulei_create; } + + err = mlxsw_sp_acl_rulei_counter_alloc(mlxsw_sp, rule->rulei); + if (err) + goto err_counter_alloc; return rule; +err_counter_alloc: + mlxsw_sp_acl_rulei_destroy(rule->rulei); err_rulei_create: kfree(rule); err_alloc: @@ -401,6 +446,7 @@ void mlxsw_sp_acl_rule_destroy(struct mlxsw_sp *mlxsw_sp, { struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; + mlxsw_sp_acl_rulei_counter_free(mlxsw_sp, rule->rulei); mlxsw_sp_acl_rulei_destroy(rule->rulei); kfree(rule); mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset); @@ -422,6 +468,7 @@ int mlxsw_sp_acl_rule_add(struct mlxsw_sp *mlxsw_sp, if (err) goto err_rhashtable_insert; + list_add_tail(&rule->list, &mlxsw_sp->acl->rules); return 0; err_rhashtable_insert: @@ -435,6 +482,7 @@ void mlxsw_sp_acl_rule_del(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; + list_del(&rule->list); rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node, mlxsw_sp_acl_rule_ht_params); ops->rule_del(mlxsw_sp, rule->priv); @@ -455,6 +503,90 @@ mlxsw_sp_acl_rule_rulei(struct mlxsw_sp_acl_rule *rule) return rule->rulei; } +static int mlxsw_sp_acl_rule_activity_update(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule *rule) +{ + struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; + const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; + bool active; + int err; + + err = ops->rule_activity_get(mlxsw_sp, rule->priv, &active); + if (err) + return err; + if (active) + rule->last_used = jiffies; + return 0; +} + +static int mlxsw_sp_acl_rules_activity_update(struct mlxsw_sp_acl *acl) +{ + struct mlxsw_sp_acl_rule *rule; + int err; + + /* Protect internal structures from changes */ + rtnl_lock(); + list_for_each_entry(rule, &acl->rules, list) { + err = mlxsw_sp_acl_rule_activity_update(acl->mlxsw_sp, + rule); + if (err) + goto err_rule_update; + } + rtnl_unlock(); + return 0; + +err_rule_update: + rtnl_unlock(); + return err; +} + +static void mlxsw_sp_acl_rule_activity_work_schedule(struct mlxsw_sp_acl *acl) +{ + unsigned long interval = acl->rule_activity_update.interval; + + mlxsw_core_schedule_dw(&acl->rule_activity_update.dw, + msecs_to_jiffies(interval)); +} + +static void mlxsw_sp_acl_rul_activity_update_work(struct work_struct *work) +{ + struct mlxsw_sp_acl *acl = container_of(work, struct mlxsw_sp_acl, + rule_activity_update.dw.work); + int err; + + err = mlxsw_sp_acl_rules_activity_update(acl); + if (err) + dev_err(acl->mlxsw_sp->bus_info->dev, "Could not update acl activity"); + + mlxsw_sp_acl_rule_activity_work_schedule(acl); +} + +int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_rule *rule, + u64 *packets, u64 *bytes, u64 *last_use) + +{ + struct mlxsw_sp_acl_rule_info *rulei; + u64 current_packets; + u64 current_bytes; + int err; + + rulei = mlxsw_sp_acl_rule_rulei(rule); + err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index, + ¤t_packets, ¤t_bytes); + if (err) + return err; + + *packets = current_packets - rule->last_packets; + *bytes = current_bytes - rule->last_bytes; + *last_use = rule->last_used; + + rule->last_bytes = current_bytes; + rule->last_packets = current_packets; + + return 0; +} + #define MLXSW_SP_KDVL_ACT_EXT_SIZE 1 static int mlxsw_sp_act_kvdl_set_add(void *priv, u32 *p_kvdl_index, @@ -547,7 +679,7 @@ int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp) if (!acl) return -ENOMEM; mlxsw_sp->acl = acl; - + acl->mlxsw_sp = mlxsw_sp; acl->afk = mlxsw_afk_create(MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_FLEX_KEYS), mlxsw_sp_afk_blocks, @@ -570,11 +702,18 @@ int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp) if (err) goto err_rhashtable_init; + INIT_LIST_HEAD(&acl->rules); err = acl_ops->init(mlxsw_sp, acl->priv); if (err) goto err_acl_ops_init; acl->ops = acl_ops; + + /* Create the delayed work for the rule activity_update */ + INIT_DELAYED_WORK(&acl->rule_activity_update.dw, + mlxsw_sp_acl_rul_activity_update_work); + acl->rule_activity_update.interval = MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS; + mlxsw_core_schedule_dw(&acl->rule_activity_update.dw, 0); return 0; err_acl_ops_init: @@ -593,7 +732,9 @@ void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp) struct mlxsw_sp_acl *acl = mlxsw_sp->acl; const struct mlxsw_sp_acl_ops *acl_ops = acl->ops; + cancel_delayed_work_sync(&mlxsw_sp->acl->rule_activity_update.dw); acl_ops->fini(mlxsw_sp, acl->priv); + WARN_ON(!list_empty(&acl->rules)); rhashtable_destroy(&acl->ruleset_ht); mlxsw_afa_destroy(acl->afa); mlxsw_afk_destroy(acl->afk); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c index 6858439a1319..3a24289979d9 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c @@ -561,6 +561,24 @@ mlxsw_sp_acl_tcam_region_entry_remove(struct mlxsw_sp *mlxsw_sp, mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); } +static int +mlxsw_sp_acl_tcam_region_entry_activity_get(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_tcam_region *region, + unsigned int offset, + bool *activity) +{ + char ptce2_pl[MLXSW_REG_PTCE2_LEN]; + int err; + + mlxsw_reg_ptce2_pack(ptce2_pl, true, MLXSW_REG_PTCE2_OP_QUERY_CLEAR_ON_READ, + region->tcam_region_info, offset); + err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ptce2), ptce2_pl); + if (err) + return err; + *activity = mlxsw_reg_ptce2_a_get(ptce2_pl); + return 0; +} + #define MLXSW_SP_ACL_TCAM_CATCHALL_PRIO (~0U) static int @@ -940,6 +958,19 @@ static void mlxsw_sp_acl_tcam_entry_del(struct mlxsw_sp *mlxsw_sp, mlxsw_sp_acl_tcam_chunk_put(mlxsw_sp, chunk); } +static int +mlxsw_sp_acl_tcam_entry_activity_get(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_acl_tcam_entry *entry, + bool *activity) +{ + struct mlxsw_sp_acl_tcam_chunk *chunk = entry->chunk; + struct mlxsw_sp_acl_tcam_region *region = chunk->region; + + return mlxsw_sp_acl_tcam_region_entry_activity_get(mlxsw_sp, region, + entry->parman_item.index, + activity); +} + static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = { MLXSW_AFK_ELEMENT_SRC_SYS_PORT, MLXSW_AFK_ELEMENT_DMAC, @@ -1048,6 +1079,16 @@ mlxsw_sp_acl_tcam_flower_rule_del(struct mlxsw_sp *mlxsw_sp, void *rule_priv) mlxsw_sp_acl_tcam_entry_del(mlxsw_sp, &rule->entry); } +static int +mlxsw_sp_acl_tcam_flower_rule_activity_get(struct mlxsw_sp *mlxsw_sp, + void *rule_priv, bool *activity) +{ + struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv; + + return mlxsw_sp_acl_tcam_entry_activity_get(mlxsw_sp, &rule->entry, + activity); +} + static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_flower_ops = { .ruleset_priv_size = sizeof(struct mlxsw_sp_acl_tcam_flower_ruleset), .ruleset_add = mlxsw_sp_acl_tcam_flower_ruleset_add, @@ -1057,6 +1098,7 @@ static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_flower_ops = { .rule_priv_size = sizeof(struct mlxsw_sp_acl_tcam_flower_rule), .rule_add = mlxsw_sp_acl_tcam_flower_rule_add, .rule_del = mlxsw_sp_acl_tcam_flower_rule_del, + .rule_activity_get = mlxsw_sp_acl_tcam_flower_rule_activity_get, }; static const struct mlxsw_sp_acl_profile_ops * diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c new file mode 100644 index 000000000000..1631e01908c0 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c @@ -0,0 +1,198 @@ +/* + * drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.c + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Arkadi Sharshevsky <arkadis@mellanox.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/kernel.h> +#include <linux/bitops.h> + +#include "spectrum_cnt.h" + +#define MLXSW_SP_COUNTER_POOL_BANK_SIZE 4096 + +struct mlxsw_sp_counter_sub_pool { + unsigned int base_index; + unsigned int size; + unsigned int entry_size; + unsigned int bank_count; +}; + +struct mlxsw_sp_counter_pool { + unsigned int pool_size; + unsigned long *usage; /* Usage bitmap */ + struct mlxsw_sp_counter_sub_pool *sub_pools; +}; + +static struct mlxsw_sp_counter_sub_pool mlxsw_sp_counter_sub_pools[] = { + [MLXSW_SP_COUNTER_SUB_POOL_FLOW] = { + .bank_count = 6, + }, +}; + +static int mlxsw_sp_counter_pool_validate(struct mlxsw_sp *mlxsw_sp) +{ + unsigned int total_bank_config = 0; + unsigned int pool_size; + int i; + + pool_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, COUNTER_POOL_SIZE); + /* Check config is valid, no bank over subscription */ + for (i = 0; i < ARRAY_SIZE(mlxsw_sp_counter_sub_pools); i++) + total_bank_config += mlxsw_sp_counter_sub_pools[i].bank_count; + if (total_bank_config > pool_size / MLXSW_SP_COUNTER_POOL_BANK_SIZE + 1) + return -EINVAL; + return 0; +} + +static int mlxsw_sp_counter_sub_pools_prepare(struct mlxsw_sp *mlxsw_sp) +{ + struct mlxsw_sp_counter_sub_pool *sub_pool; + + /* Prepare generic flow pool*/ + sub_pool = &mlxsw_sp_counter_sub_pools[MLXSW_SP_COUNTER_SUB_POOL_FLOW]; + if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, COUNTER_SIZE_PACKETS_BYTES)) + return -EIO; + sub_pool->entry_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, + COUNTER_SIZE_PACKETS_BYTES); + return 0; +} + +int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp) +{ + struct mlxsw_sp_counter_sub_pool *sub_pool; + struct mlxsw_sp_counter_pool *pool; + unsigned int base_index; + unsigned int map_size; + int i; + int err; + + if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, COUNTER_POOL_SIZE)) + return -EIO; + + err = mlxsw_sp_counter_pool_validate(mlxsw_sp); + if (err) + return err; + + err = mlxsw_sp_counter_sub_pools_prepare(mlxsw_sp); + if (err) + return err; + + pool = kzalloc(sizeof(*pool), GFP_KERNEL); + if (!pool) + return -ENOMEM; + + pool->pool_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, COUNTER_POOL_SIZE); + map_size = BITS_TO_LONGS(pool->pool_size) * sizeof(unsigned long); + + pool->usage = kzalloc(map_size, GFP_KERNEL); + if (!pool->usage) { + err = -ENOMEM; + goto err_usage_alloc; + } + + pool->sub_pools = mlxsw_sp_counter_sub_pools; + /* Allocation is based on bank count which should be + * specified for each sub pool statically. + */ + base_index = 0; + for (i = 0; i < ARRAY_SIZE(mlxsw_sp_counter_sub_pools); i++) { + sub_pool = &pool->sub_pools[i]; + sub_pool->size = sub_pool->bank_count * + MLXSW_SP_COUNTER_POOL_BANK_SIZE; + sub_pool->base_index = base_index; + base_index += sub_pool->size; + /* The last bank can't be fully used */ + if (sub_pool->base_index + sub_pool->size > pool->pool_size) + sub_pool->size = pool->pool_size - sub_pool->base_index; + } + + mlxsw_sp->counter_pool = pool; + return 0; + +err_usage_alloc: + kfree(pool); + return err; +} + +void mlxsw_sp_counter_pool_fini(struct mlxsw_sp *mlxsw_sp) +{ + struct mlxsw_sp_counter_pool *pool = mlxsw_sp->counter_pool; + + WARN_ON(find_first_bit(pool->usage, pool->pool_size) != + pool->pool_size); + kfree(pool->usage); + kfree(pool); +} + +int mlxsw_sp_counter_alloc(struct mlxsw_sp *mlxsw_sp, + enum mlxsw_sp_counter_sub_pool_id sub_pool_id, + unsigned int *p_counter_index) +{ + struct mlxsw_sp_counter_pool *pool = mlxsw_sp->counter_pool; + struct mlxsw_sp_counter_sub_pool *sub_pool; + unsigned int entry_index; + unsigned int stop_index; + int i; + + sub_pool = &mlxsw_sp_counter_sub_pools[sub_pool_id]; + stop_index = sub_pool->base_index + sub_pool->size; + entry_index = sub_pool->base_index; + + entry_index = find_next_zero_bit(pool->usage, stop_index, entry_index); + if (entry_index == stop_index) + return -ENOBUFS; + /* The sub-pools can contain non-integer number of entries + * so we must check for overflow + */ + if (entry_index + sub_pool->entry_size > stop_index) + return -ENOBUFS; + for (i = 0; i < sub_pool->entry_size; i++) + __set_bit(entry_index + i, pool->usage); + + *p_counter_index = entry_index; + return 0; +} + +void mlxsw_sp_counter_free(struct mlxsw_sp *mlxsw_sp, + enum mlxsw_sp_counter_sub_pool_id sub_pool_id, + unsigned int counter_index) +{ + struct mlxsw_sp_counter_pool *pool = mlxsw_sp->counter_pool; + struct mlxsw_sp_counter_sub_pool *sub_pool; + int i; + + if (WARN_ON(counter_index >= pool->pool_size)) + return; + sub_pool = &mlxsw_sp_counter_sub_pools[sub_pool_id]; + for (i = 0; i < sub_pool->entry_size; i++) + __clear_bit(counter_index + i, pool->usage); +} diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.h new file mode 100644 index 000000000000..031bc4abbe2d --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.h @@ -0,0 +1,53 @@ +/* + * drivers/net/ethernet/mellanox/mlxsw/spectrum_cnt.h + * Copyright (c) 2017 Mellanox Technologies. All rights reserved. + * Copyright (c) 2017 Arkadi Sharshevsky <arkdis@mellanox.com> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the names of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _MLXSW_SPECTRUM_CNT_H +#define _MLXSW_SPECTRUM_CNT_H + +#include "spectrum.h" + +enum mlxsw_sp_counter_sub_pool_id { + MLXSW_SP_COUNTER_SUB_POOL_FLOW, +}; + +int mlxsw_sp_counter_alloc(struct mlxsw_sp *mlxsw_sp, + enum mlxsw_sp_counter_sub_pool_id sub_pool_id, + unsigned int *p_counter_index); +void mlxsw_sp_counter_free(struct mlxsw_sp *mlxsw_sp, + enum mlxsw_sp_counter_sub_pool_id sub_pool_id, + unsigned int counter_index); +int mlxsw_sp_counter_pool_init(struct mlxsw_sp *mlxsw_sp); +void mlxsw_sp_counter_pool_fini(struct mlxsw_sp *mlxsw_sp); + +#endif diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c index f2ed0b3d5718..28bc989371c6 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c @@ -56,6 +56,11 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp, if (tc_no_actions(exts)) return 0; + /* Count action is inserted first */ + err = mlxsw_sp_acl_rulei_act_count(mlxsw_sp, rulei); + if (err) + return err; + tcf_exts_to_list(exts, &actions); list_for_each_entry(a, &actions, list) { if (is_tcf_gact_shot(a)) { @@ -346,3 +351,47 @@ void mlxsw_sp_flower_destroy(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress, mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); } + +int mlxsw_sp_flower_stats(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress, + struct tc_cls_flower_offload *f) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + struct mlxsw_sp_acl_ruleset *ruleset; + struct mlxsw_sp_acl_rule *rule; + struct tc_action *a; + LIST_HEAD(actions); + u64 packets; + u64 lastuse; + u64 bytes; + int err; + + ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, mlxsw_sp_port->dev, + ingress, + MLXSW_SP_ACL_PROFILE_FLOWER); + if (WARN_ON(IS_ERR(ruleset))) + return -EINVAL; + + rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie); + if (!rule) + return -EINVAL; + + err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &bytes, &packets, + &lastuse); + if (err) + goto err_rule_get_stats; + + preempt_disable(); + + tcf_exts_to_list(f->exts, &actions); + list_for_each_entry(a, &actions, list) + tcf_action_stats_update(a, bytes, packets, lastuse); + + preempt_enable(); + + mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); + return 0; + +err_rule_get_stats: + mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset); + return err; +} |