diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 3dbd82e636f8..467aa5288935 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -57,6 +57,7 @@ #include <net/pkt_cls.h> #include <net/tc_act/tc_mirred.h> #include <net/netevent.h> +#include <net/tc_act/tc_sample.h> #include "spectrum.h" #include "pci.h" @@ -469,6 +470,16 @@ static void mlxsw_sp_span_mirror_remove(struct mlxsw_sp_port *from, mlxsw_sp_span_inspected_port_unbind(from, span_entry, type); } +static int mlxsw_sp_port_sample_set(struct mlxsw_sp_port *mlxsw_sp_port, + bool enable, u32 rate) +{ + struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp; + char mpsc_pl[MLXSW_REG_MPSC_LEN]; + + mlxsw_reg_mpsc_pack(mpsc_pl, mlxsw_sp_port->local_port, enable, rate); + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(mpsc), mpsc_pl); +} + static int mlxsw_sp_port_admin_status_set(struct mlxsw_sp_port *mlxsw_sp_port, bool is_up) { @@ -1218,6 +1229,51 @@ mlxsw_sp_port_del_cls_matchall_mirror(struct mlxsw_sp_port *mlxsw_sp_port, mlxsw_sp_span_mirror_remove(mlxsw_sp_port, to_port, span_type); } +static int +mlxsw_sp_port_add_cls_matchall_sample(struct mlxsw_sp_port *mlxsw_sp_port, + struct tc_cls_matchall_offload *cls, + const struct tc_action *a, + bool ingress) +{ + int err; + + if (!mlxsw_sp_port->sample) + return -EOPNOTSUPP; + if (rtnl_dereference(mlxsw_sp_port->sample->psample_group)) { + netdev_err(mlxsw_sp_port->dev, "sample already active\n"); + return -EEXIST; + } + if (tcf_sample_rate(a) > MLXSW_REG_MPSC_RATE_MAX) { + netdev_err(mlxsw_sp_port->dev, "sample rate not supported\n"); + return -EOPNOTSUPP; + } + + rcu_assign_pointer(mlxsw_sp_port->sample->psample_group, + tcf_sample_psample_group(a)); + mlxsw_sp_port->sample->truncate = tcf_sample_truncate(a); + mlxsw_sp_port->sample->trunc_size = tcf_sample_trunc_size(a); + mlxsw_sp_port->sample->rate = tcf_sample_rate(a); + + err = mlxsw_sp_port_sample_set(mlxsw_sp_port, true, tcf_sample_rate(a)); + if (err) + goto err_port_sample_set; + return 0; + +err_port_sample_set: + RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL); + return err; +} + +static void +mlxsw_sp_port_del_cls_matchall_sample(struct mlxsw_sp_port *mlxsw_sp_port) +{ + if (!mlxsw_sp_port->sample) + return; + + mlxsw_sp_port_sample_set(mlxsw_sp_port, false, 1); + RCU_INIT_POINTER(mlxsw_sp_port->sample->psample_group, NULL); +} + static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port, __be16 protocol, struct tc_cls_matchall_offload *cls, @@ -1248,6 +1304,10 @@ static int mlxsw_sp_port_add_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port, mirror = &mall_tc_entry->mirror; err = mlxsw_sp_port_add_cls_matchall_mirror(mlxsw_sp_port, mirror, a, ingress); + } else if (is_tcf_sample(a) && protocol == htons(ETH_P_ALL)) { + mall_tc_entry->type = MLXSW_SP_PORT_MALL_SAMPLE; + err = mlxsw_sp_port_add_cls_matchall_sample(mlxsw_sp_port, cls, + a, ingress); } else { err = -EOPNOTSUPP; } @@ -1281,6 +1341,9 @@ static void mlxsw_sp_port_del_cls_matchall(struct mlxsw_sp_port *mlxsw_sp_port, mlxsw_sp_port_del_cls_matchall_mirror(mlxsw_sp_port, &mall_tc_entry->mirror); break; + case MLXSW_SP_PORT_MALL_SAMPLE: + mlxsw_sp_port_del_cls_matchall_sample(mlxsw_sp_port); + break; default: WARN_ON(1); } @@ -2259,6 +2322,13 @@ static int __mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port, goto err_alloc_stats; } + mlxsw_sp_port->sample = kzalloc(sizeof(*mlxsw_sp_port->sample), + GFP_KERNEL); + if (!mlxsw_sp_port->sample) { + err = -ENOMEM; + goto err_alloc_sample; + } + mlxsw_sp_port->hw_stats.cache = kzalloc(sizeof(*mlxsw_sp_port->hw_stats.cache), GFP_KERNEL); @@ -2387,6 +2457,8 @@ err_dev_addr_init: err_port_swid_set: kfree(mlxsw_sp_port->hw_stats.cache); err_alloc_hw_stats: + kfree(mlxsw_sp_port->sample); +err_alloc_sample: free_percpu(mlxsw_sp_port->pcpu_stats); err_alloc_stats: kfree(mlxsw_sp_port->untagged_vlans); @@ -2433,6 +2505,7 @@ static void __mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port) mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT); mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port); kfree(mlxsw_sp_port->hw_stats.cache); + kfree(mlxsw_sp_port->sample); free_percpu(mlxsw_sp_port->pcpu_stats); kfree(mlxsw_sp_port->untagged_vlans); kfree(mlxsw_sp_port->active_vlans); @@ -2734,6 +2807,41 @@ static void mlxsw_sp_rx_listener_mark_func(struct sk_buff *skb, u8 local_port, return mlxsw_sp_rx_listener_no_mark_func(skb, local_port, priv); } +static void mlxsw_sp_rx_listener_sample_func(struct sk_buff *skb, u8 local_port, + void *priv) +{ + struct mlxsw_sp *mlxsw_sp = priv; + struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp->ports[local_port]; + struct psample_group *psample_group; + u32 size; + + if (unlikely(!mlxsw_sp_port)) { + dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: sample skb received for non-existent port\n", + local_port); + goto out; + } + if (unlikely(!mlxsw_sp_port->sample)) { + dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: sample skb received on unsupported port\n", + local_port); + goto out; + } + + size = mlxsw_sp_port->sample->truncate ? + mlxsw_sp_port->sample->trunc_size : skb->len; + + rcu_read_lock(); + psample_group = rcu_dereference(mlxsw_sp_port->sample->psample_group); + if (!psample_group) + goto out_unlock; + psample_sample_packet(psample_group, skb, size, + mlxsw_sp_port->dev->ifindex, 0, + mlxsw_sp_port->sample->rate); +out_unlock: + rcu_read_unlock(); +out: + consume_skb(skb); +} + #define MLXSW_SP_RXL_NO_MARK(_trap_id, _action, _trap_group, _is_ctrl) \ MLXSW_RXL(mlxsw_sp_rx_listener_no_mark_func, _trap_id, _action, \ _is_ctrl, SP_##_trap_group, DISCARD) @@ -2769,6 +2877,9 @@ static const struct mlxsw_listener mlxsw_sp_listener[] = { MLXSW_SP_RXL_NO_MARK(RTR_INGRESS0, TRAP_TO_CPU, REMOTE_ROUTE, false), MLXSW_SP_RXL_NO_MARK(HOST_MISS_IPV4, TRAP_TO_CPU, ARP_MISS, false), MLXSW_SP_RXL_NO_MARK(BGP_IPV4, TRAP_TO_CPU, BGP_IPV4, false), + /* PKT Sample trap */ + MLXSW_RXL(mlxsw_sp_rx_listener_sample_func, PKT_SAMPLE, MIRROR_TO_CPU, + false, SP_IP2ME, DISCARD) }; static int mlxsw_sp_cpu_policers_set(struct mlxsw_core *mlxsw_core) |