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-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/Makefile2
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/core.c52
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/core.h9
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.c21
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum.h13
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c267
6 files changed, 363 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Makefile b/drivers/net/ethernet/mellanox/mlxsw/Makefile
index 171b36bd8a4e..0e86a581d45b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/Makefile
+++ b/drivers/net/ethernet/mellanox/mlxsw/Makefile
@@ -29,7 +29,7 @@ mlxsw_spectrum-objs := spectrum.o spectrum_buffers.o \
spectrum_mr_tcam.o spectrum_mr.o \
spectrum_qdisc.o spectrum_span.o \
spectrum_nve.o spectrum_nve_vxlan.o \
- spectrum_dpipe.o
+ spectrum_dpipe.o spectrum_trap.o
mlxsw_spectrum-$(CONFIG_MLXSW_SPECTRUM_DCB) += spectrum_dcb.o
mlxsw_spectrum-$(CONFIG_PTP_1588_CLOCK) += spectrum_ptp.o
obj-$(CONFIG_MLXSW_MINIMAL) += mlxsw_minimal.o
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 6ec07ecfb5f6..963a2b4b61b1 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -1017,6 +1017,54 @@ static int mlxsw_devlink_flash_update(struct devlink *devlink,
component, extack);
}
+static int mlxsw_devlink_trap_init(struct devlink *devlink,
+ const struct devlink_trap *trap,
+ void *trap_ctx)
+{
+ struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+ struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver;
+
+ if (!mlxsw_driver->trap_init)
+ return -EOPNOTSUPP;
+ return mlxsw_driver->trap_init(mlxsw_core, trap, trap_ctx);
+}
+
+static void mlxsw_devlink_trap_fini(struct devlink *devlink,
+ const struct devlink_trap *trap,
+ void *trap_ctx)
+{
+ struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+ struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver;
+
+ if (!mlxsw_driver->trap_fini)
+ return;
+ mlxsw_driver->trap_fini(mlxsw_core, trap, trap_ctx);
+}
+
+static int mlxsw_devlink_trap_action_set(struct devlink *devlink,
+ const struct devlink_trap *trap,
+ enum devlink_trap_action action)
+{
+ struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+ struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver;
+
+ if (!mlxsw_driver->trap_action_set)
+ return -EOPNOTSUPP;
+ return mlxsw_driver->trap_action_set(mlxsw_core, trap, action);
+}
+
+static int
+mlxsw_devlink_trap_group_init(struct devlink *devlink,
+ const struct devlink_trap_group *group)
+{
+ struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+ struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver;
+
+ if (!mlxsw_driver->trap_group_init)
+ return -EOPNOTSUPP;
+ return mlxsw_driver->trap_group_init(mlxsw_core, group);
+}
+
static const struct devlink_ops mlxsw_devlink_ops = {
.reload = mlxsw_devlink_core_bus_device_reload,
.port_type_set = mlxsw_devlink_port_type_set,
@@ -1034,6 +1082,10 @@ static const struct devlink_ops mlxsw_devlink_ops = {
.sb_occ_tc_port_bind_get = mlxsw_devlink_sb_occ_tc_port_bind_get,
.info_get = mlxsw_devlink_info_get,
.flash_update = mlxsw_devlink_flash_update,
+ .trap_init = mlxsw_devlink_trap_init,
+ .trap_fini = mlxsw_devlink_trap_fini,
+ .trap_action_set = mlxsw_devlink_trap_action_set,
+ .trap_group_init = mlxsw_devlink_trap_group_init,
};
static int
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
index 19cea16c30bb..b65a17d49e43 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -292,6 +292,15 @@ struct mlxsw_driver {
int (*flash_update)(struct mlxsw_core *mlxsw_core,
const char *file_name, const char *component,
struct netlink_ext_ack *extack);
+ int (*trap_init)(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap, void *trap_ctx);
+ void (*trap_fini)(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap, void *trap_ctx);
+ int (*trap_action_set)(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap,
+ enum devlink_trap_action action);
+ int (*trap_group_init)(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap_group *group);
void (*txhdr_construct)(struct sk_buff *skb,
const struct mlxsw_tx_info *tx_info);
int (*resources_register)(struct mlxsw_core *mlxsw_core);
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 389861ece418..7de9833fc60b 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -4665,6 +4665,12 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core,
goto err_traps_init;
}
+ err = mlxsw_sp_devlink_traps_init(mlxsw_sp);
+ if (err) {
+ dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize devlink traps\n");
+ goto err_devlink_traps_init;
+ }
+
err = mlxsw_sp_buffers_init(mlxsw_sp);
if (err) {
dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize buffers\n");
@@ -4798,6 +4804,8 @@ err_span_init:
err_lag_init:
mlxsw_sp_buffers_fini(mlxsw_sp);
err_buffers_init:
+ mlxsw_sp_devlink_traps_fini(mlxsw_sp);
+err_devlink_traps_init:
mlxsw_sp_traps_fini(mlxsw_sp);
err_traps_init:
mlxsw_sp_fids_fini(mlxsw_sp);
@@ -4870,6 +4878,7 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core)
mlxsw_sp_span_fini(mlxsw_sp);
mlxsw_sp_lag_fini(mlxsw_sp);
mlxsw_sp_buffers_fini(mlxsw_sp);
+ mlxsw_sp_devlink_traps_fini(mlxsw_sp);
mlxsw_sp_traps_fini(mlxsw_sp);
mlxsw_sp_fids_fini(mlxsw_sp);
mlxsw_sp_kvdl_fini(mlxsw_sp);
@@ -5251,6 +5260,10 @@ static struct mlxsw_driver mlxsw_sp1_driver = {
.sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get,
.sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get,
.flash_update = mlxsw_sp_flash_update,
+ .trap_init = mlxsw_sp_trap_init,
+ .trap_fini = mlxsw_sp_trap_fini,
+ .trap_action_set = mlxsw_sp_trap_action_set,
+ .trap_group_init = mlxsw_sp_trap_group_init,
.txhdr_construct = mlxsw_sp_txhdr_construct,
.resources_register = mlxsw_sp1_resources_register,
.kvd_sizes_get = mlxsw_sp_kvd_sizes_get,
@@ -5281,6 +5294,10 @@ static struct mlxsw_driver mlxsw_sp2_driver = {
.sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get,
.sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get,
.flash_update = mlxsw_sp_flash_update,
+ .trap_init = mlxsw_sp_trap_init,
+ .trap_fini = mlxsw_sp_trap_fini,
+ .trap_action_set = mlxsw_sp_trap_action_set,
+ .trap_group_init = mlxsw_sp_trap_group_init,
.txhdr_construct = mlxsw_sp_txhdr_construct,
.resources_register = mlxsw_sp2_resources_register,
.params_register = mlxsw_sp2_params_register,
@@ -5310,6 +5327,10 @@ static struct mlxsw_driver mlxsw_sp3_driver = {
.sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get,
.sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get,
.flash_update = mlxsw_sp_flash_update,
+ .trap_init = mlxsw_sp_trap_init,
+ .trap_fini = mlxsw_sp_trap_fini,
+ .trap_action_set = mlxsw_sp_trap_action_set,
+ .trap_group_init = mlxsw_sp_trap_group_init,
.txhdr_construct = mlxsw_sp_txhdr_construct,
.resources_register = mlxsw_sp2_resources_register,
.params_register = mlxsw_sp2_params_register,
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index db17ba35ec84..20c14bba9ccb 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -958,4 +958,17 @@ void mlxsw_sp_nve_fini(struct mlxsw_sp *mlxsw_sp);
int mlxsw_sp_nve_inc_parsing_depth_get(struct mlxsw_sp *mlxsw_sp);
void mlxsw_sp_nve_inc_parsing_depth_put(struct mlxsw_sp *mlxsw_sp);
+/* spectrum_trap.c */
+int mlxsw_sp_devlink_traps_init(struct mlxsw_sp *mlxsw_sp);
+void mlxsw_sp_devlink_traps_fini(struct mlxsw_sp *mlxsw_sp);
+int mlxsw_sp_trap_init(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap, void *trap_ctx);
+void mlxsw_sp_trap_fini(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap, void *trap_ctx);
+int mlxsw_sp_trap_action_set(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap,
+ enum devlink_trap_action action);
+int mlxsw_sp_trap_group_init(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap_group *group);
+
#endif
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
new file mode 100644
index 000000000000..899450b28621
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_trap.c
@@ -0,0 +1,267 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2019 Mellanox Technologies. All rights reserved */
+
+#include <linux/kernel.h>
+#include <net/devlink.h>
+#include <uapi/linux/devlink.h>
+
+#include "core.h"
+#include "reg.h"
+#include "spectrum.h"
+
+#define MLXSW_SP_TRAP_METADATA DEVLINK_TRAP_METADATA_TYPE_F_IN_PORT
+
+static void mlxsw_sp_rx_drop_listener(struct sk_buff *skb, u8 local_port,
+ void *priv);
+
+#define MLXSW_SP_TRAP_DROP(_id, _group_id) \
+ DEVLINK_TRAP_GENERIC(DROP, DROP, _id, \
+ DEVLINK_TRAP_GROUP_GENERIC(_group_id), \
+ MLXSW_SP_TRAP_METADATA)
+
+#define MLXSW_SP_RXL_DISCARD(_id, _group_id) \
+ MLXSW_RXL(mlxsw_sp_rx_drop_listener, DISCARD_##_id, SET_FW_DEFAULT, \
+ false, SP_##_group_id, DISCARD)
+
+static struct devlink_trap mlxsw_sp_traps_arr[] = {
+ MLXSW_SP_TRAP_DROP(SMAC_MC, L2_DROPS),
+ MLXSW_SP_TRAP_DROP(VLAN_TAG_MISMATCH, L2_DROPS),
+ MLXSW_SP_TRAP_DROP(INGRESS_VLAN_FILTER, L2_DROPS),
+ MLXSW_SP_TRAP_DROP(INGRESS_STP_FILTER, L2_DROPS),
+ MLXSW_SP_TRAP_DROP(EMPTY_TX_LIST, L2_DROPS),
+ MLXSW_SP_TRAP_DROP(PORT_LOOPBACK_FILTER, L2_DROPS),
+};
+
+static struct mlxsw_listener mlxsw_sp_listeners_arr[] = {
+ MLXSW_SP_RXL_DISCARD(ING_PACKET_SMAC_MC, L2_DISCARDS),
+ MLXSW_SP_RXL_DISCARD(ING_SWITCH_VTAG_ALLOW, L2_DISCARDS),
+ MLXSW_SP_RXL_DISCARD(ING_SWITCH_VLAN, L2_DISCARDS),
+ MLXSW_SP_RXL_DISCARD(ING_SWITCH_STP, L2_DISCARDS),
+ MLXSW_SP_RXL_DISCARD(LOOKUP_SWITCH_UC, L2_DISCARDS),
+ MLXSW_SP_RXL_DISCARD(LOOKUP_SWITCH_MC_NULL, L2_DISCARDS),
+ MLXSW_SP_RXL_DISCARD(LOOKUP_SWITCH_LB, L2_DISCARDS),
+};
+
+/* Mapping between hardware trap and devlink trap. Multiple hardware traps can
+ * be mapped to the same devlink trap. Order is according to
+ * 'mlxsw_sp_listeners_arr'.
+ */
+static u16 mlxsw_sp_listener_devlink_map[] = {
+ DEVLINK_TRAP_GENERIC_ID_SMAC_MC,
+ DEVLINK_TRAP_GENERIC_ID_VLAN_TAG_MISMATCH,
+ DEVLINK_TRAP_GENERIC_ID_INGRESS_VLAN_FILTER,
+ DEVLINK_TRAP_GENERIC_ID_INGRESS_STP_FILTER,
+ DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
+ DEVLINK_TRAP_GENERIC_ID_EMPTY_TX_LIST,
+ DEVLINK_TRAP_GENERIC_ID_PORT_LOOPBACK_FILTER,
+};
+
+static int mlxsw_sp_rx_listener(struct mlxsw_sp *mlxsw_sp, struct sk_buff *skb,
+ u8 local_port,
+ struct mlxsw_sp_port *mlxsw_sp_port)
+{
+ struct mlxsw_sp_port_pcpu_stats *pcpu_stats;
+
+ if (unlikely(!mlxsw_sp_port)) {
+ dev_warn_ratelimited(mlxsw_sp->bus_info->dev, "Port %d: skb received for non-existent port\n",
+ local_port);
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ skb->dev = mlxsw_sp_port->dev;
+
+ pcpu_stats = this_cpu_ptr(mlxsw_sp_port->pcpu_stats);
+ u64_stats_update_begin(&pcpu_stats->syncp);
+ pcpu_stats->rx_packets++;
+ pcpu_stats->rx_bytes += skb->len;
+ u64_stats_update_end(&pcpu_stats->syncp);
+
+ skb->protocol = eth_type_trans(skb, skb->dev);
+
+ return 0;
+}
+
+static void mlxsw_sp_rx_drop_listener(struct sk_buff *skb, u8 local_port,
+ void *trap_ctx)
+{
+ struct devlink_port *in_devlink_port;
+ struct mlxsw_sp_port *mlxsw_sp_port;
+ struct mlxsw_sp *mlxsw_sp;
+ struct devlink *devlink;
+
+ mlxsw_sp = devlink_trap_ctx_priv(trap_ctx);
+ mlxsw_sp_port = mlxsw_sp->ports[local_port];
+
+ if (mlxsw_sp_rx_listener(mlxsw_sp, skb, local_port, mlxsw_sp_port))
+ return;
+
+ devlink = priv_to_devlink(mlxsw_sp->core);
+ in_devlink_port = mlxsw_core_port_devlink_port_get(mlxsw_sp->core,
+ local_port);
+ devlink_trap_report(devlink, skb, trap_ctx, in_devlink_port);
+ consume_skb(skb);
+}
+
+int mlxsw_sp_devlink_traps_init(struct mlxsw_sp *mlxsw_sp)
+{
+ struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+
+ if (WARN_ON(ARRAY_SIZE(mlxsw_sp_listener_devlink_map) !=
+ ARRAY_SIZE(mlxsw_sp_listeners_arr)))
+ return -EINVAL;
+
+ return devlink_traps_register(devlink, mlxsw_sp_traps_arr,
+ ARRAY_SIZE(mlxsw_sp_traps_arr),
+ mlxsw_sp);
+}
+
+void mlxsw_sp_devlink_traps_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+
+ devlink_traps_unregister(devlink, mlxsw_sp_traps_arr,
+ ARRAY_SIZE(mlxsw_sp_traps_arr));
+}
+
+int mlxsw_sp_trap_init(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap, void *trap_ctx)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mlxsw_sp_listener_devlink_map); i++) {
+ struct mlxsw_listener *listener;
+ int err;
+
+ if (mlxsw_sp_listener_devlink_map[i] != trap->id)
+ continue;
+ listener = &mlxsw_sp_listeners_arr[i];
+
+ err = mlxsw_core_trap_register(mlxsw_core, listener, trap_ctx);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+void mlxsw_sp_trap_fini(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap, void *trap_ctx)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mlxsw_sp_listener_devlink_map); i++) {
+ struct mlxsw_listener *listener;
+
+ if (mlxsw_sp_listener_devlink_map[i] != trap->id)
+ continue;
+ listener = &mlxsw_sp_listeners_arr[i];
+
+ mlxsw_core_trap_unregister(mlxsw_core, listener, trap_ctx);
+ }
+}
+
+int mlxsw_sp_trap_action_set(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap *trap,
+ enum devlink_trap_action action)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mlxsw_sp_listener_devlink_map); i++) {
+ enum mlxsw_reg_hpkt_action hw_action;
+ struct mlxsw_listener *listener;
+ int err;
+
+ if (mlxsw_sp_listener_devlink_map[i] != trap->id)
+ continue;
+ listener = &mlxsw_sp_listeners_arr[i];
+
+ switch (action) {
+ case DEVLINK_TRAP_ACTION_DROP:
+ hw_action = MLXSW_REG_HPKT_ACTION_SET_FW_DEFAULT;
+ break;
+ case DEVLINK_TRAP_ACTION_TRAP:
+ hw_action = MLXSW_REG_HPKT_ACTION_TRAP_EXCEPTION_TO_CPU;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ err = mlxsw_core_trap_action_set(mlxsw_core, listener,
+ hw_action);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+#define MLXSW_SP_DISCARD_POLICER_ID (MLXSW_REG_HTGT_TRAP_GROUP_MAX + 1)
+
+static int
+mlxsw_sp_trap_group_policer_init(struct mlxsw_sp *mlxsw_sp,
+ const struct devlink_trap_group *group)
+{
+ enum mlxsw_reg_qpcr_ir_units ir_units;
+ char qpcr_pl[MLXSW_REG_QPCR_LEN];
+ u16 policer_id;
+ u8 burst_size;
+ bool is_bytes;
+ u32 rate;
+
+ switch (group->id) {
+ case DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS:
+ policer_id = MLXSW_SP_DISCARD_POLICER_ID;
+ ir_units = MLXSW_REG_QPCR_IR_UNITS_M;
+ is_bytes = false;
+ rate = 10 * 1024; /* 10Kpps */
+ burst_size = 7;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mlxsw_reg_qpcr_pack(qpcr_pl, policer_id, ir_units, is_bytes, rate,
+ burst_size);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qpcr), qpcr_pl);
+}
+
+static int
+__mlxsw_sp_trap_group_init(struct mlxsw_sp *mlxsw_sp,
+ const struct devlink_trap_group *group)
+{
+ char htgt_pl[MLXSW_REG_HTGT_LEN];
+ u8 priority, tc, group_id;
+ u16 policer_id;
+
+ switch (group->id) {
+ case DEVLINK_TRAP_GROUP_GENERIC_ID_L2_DROPS:
+ group_id = MLXSW_REG_HTGT_TRAP_GROUP_SP_L2_DISCARDS;
+ policer_id = MLXSW_SP_DISCARD_POLICER_ID;
+ priority = 0;
+ tc = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mlxsw_reg_htgt_pack(htgt_pl, group_id, policer_id, priority, tc);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(htgt), htgt_pl);
+}
+
+int mlxsw_sp_trap_group_init(struct mlxsw_core *mlxsw_core,
+ const struct devlink_trap_group *group)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
+ int err;
+
+ err = mlxsw_sp_trap_group_policer_init(mlxsw_sp, group);
+ if (err)
+ return err;
+
+ err = __mlxsw_sp_trap_group_init(mlxsw_sp, group);
+ if (err)
+ return err;
+
+ return 0;
+}
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