diff options
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/Makefile | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 9 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 15 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_port_range.c | 181 |
4 files changed, 206 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Makefile b/drivers/net/ethernet/mellanox/mlxsw/Makefile index 3ca9fce759ea..71cad6bb6e62 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_nve.o spectrum_nve_vxlan.o \ spectrum_dpipe.o spectrum_trap.o \ spectrum_ethtool.o spectrum_policer.o \ - spectrum_pgt.o + spectrum_pgt.o spectrum_port_range.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/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index 25a01dafde1b..c0edcc91f178 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3188,6 +3188,12 @@ static int mlxsw_sp_init(struct mlxsw_core *mlxsw_core, goto err_nve_init; } + err = mlxsw_sp_port_range_init(mlxsw_sp); + if (err) { + dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize port ranges\n"); + goto err_port_range_init; + } + err = mlxsw_sp_acl_init(mlxsw_sp); if (err) { dev_err(mlxsw_sp->bus_info->dev, "Failed to initialize ACL\n"); @@ -3280,6 +3286,8 @@ err_ptp_clock_init: err_router_init: mlxsw_sp_acl_fini(mlxsw_sp); err_acl_init: + mlxsw_sp_port_range_fini(mlxsw_sp); +err_port_range_init: mlxsw_sp_nve_fini(mlxsw_sp); err_nve_init: mlxsw_sp_ipv6_addr_ht_fini(mlxsw_sp); @@ -3462,6 +3470,7 @@ static void mlxsw_sp_fini(struct mlxsw_core *mlxsw_core) } mlxsw_sp_router_fini(mlxsw_sp); mlxsw_sp_acl_fini(mlxsw_sp); + mlxsw_sp_port_range_fini(mlxsw_sp); mlxsw_sp_nve_fini(mlxsw_sp); mlxsw_sp_ipv6_addr_ht_fini(mlxsw_sp); mlxsw_sp_afa_fini(mlxsw_sp); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index 231e364cbb7c..fe6c6e02a484 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -175,6 +175,7 @@ struct mlxsw_sp { struct mlxsw_sp_acl *acl; struct mlxsw_sp_fid_core *fid_core; struct mlxsw_sp_policer_core *policer_core; + struct mlxsw_sp_port_range_core *pr_core; struct mlxsw_sp_kvdl *kvdl; struct mlxsw_sp_nve *nve; struct notifier_block netdevice_nb; @@ -1484,4 +1485,18 @@ int mlxsw_sp_pgt_entry_port_set(struct mlxsw_sp *mlxsw_sp, u16 mid, int mlxsw_sp_pgt_init(struct mlxsw_sp *mlxsw_sp); void mlxsw_sp_pgt_fini(struct mlxsw_sp *mlxsw_sp); +/* spectrum_port_range.c */ +struct mlxsw_sp_port_range { + u16 min; + u16 max; + u8 source:1; /* Source or destination */ +}; + +int mlxsw_sp_port_range_reg_get(struct mlxsw_sp *mlxsw_sp, + const struct mlxsw_sp_port_range *range, + struct netlink_ext_ack *extack, + u8 *p_prr_index); +void mlxsw_sp_port_range_reg_put(struct mlxsw_sp *mlxsw_sp, u8 prr_index); +int mlxsw_sp_port_range_init(struct mlxsw_sp *mlxsw_sp); +void mlxsw_sp_port_range_fini(struct mlxsw_sp *mlxsw_sp); #endif diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_port_range.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_port_range.c new file mode 100644 index 000000000000..a12a62632721 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_port_range.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */ + +#include <linux/bits.h> +#include <linux/netlink.h> +#include <linux/refcount.h> +#include <linux/xarray.h> + +#include "spectrum.h" + +struct mlxsw_sp_port_range_reg { + struct mlxsw_sp_port_range range; + refcount_t refcount; + u32 index; +}; + +struct mlxsw_sp_port_range_core { + struct xarray prr_xa; + struct xa_limit prr_ids; +}; + +static int +mlxsw_sp_port_range_reg_configure(struct mlxsw_sp *mlxsw_sp, + const struct mlxsw_sp_port_range_reg *prr) +{ + char pprr_pl[MLXSW_REG_PPRR_LEN]; + + /* We do not care if packet is IPv4/IPv6 and TCP/UDP, so set all four + * fields. + */ + mlxsw_reg_pprr_pack(pprr_pl, prr->index); + mlxsw_reg_pprr_ipv4_set(pprr_pl, true); + mlxsw_reg_pprr_ipv6_set(pprr_pl, true); + mlxsw_reg_pprr_src_set(pprr_pl, prr->range.source); + mlxsw_reg_pprr_dst_set(pprr_pl, !prr->range.source); + mlxsw_reg_pprr_tcp_set(pprr_pl, true); + mlxsw_reg_pprr_udp_set(pprr_pl, true); + mlxsw_reg_pprr_port_range_min_set(pprr_pl, prr->range.min); + mlxsw_reg_pprr_port_range_max_set(pprr_pl, prr->range.max); + + return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pprr), pprr_pl); +} + +static struct mlxsw_sp_port_range_reg * +mlxsw_sp_port_range_reg_create(struct mlxsw_sp *mlxsw_sp, + const struct mlxsw_sp_port_range *range, + struct netlink_ext_ack *extack) +{ + struct mlxsw_sp_port_range_core *pr_core = mlxsw_sp->pr_core; + struct mlxsw_sp_port_range_reg *prr; + int err; + + prr = kzalloc(sizeof(*prr), GFP_KERNEL); + if (!prr) + return ERR_PTR(-ENOMEM); + + prr->range = *range; + refcount_set(&prr->refcount, 1); + + err = xa_alloc(&pr_core->prr_xa, &prr->index, prr, pr_core->prr_ids, + GFP_KERNEL); + if (err) { + if (err == -EBUSY) + NL_SET_ERR_MSG_MOD(extack, "Exceeded number of port range registers"); + goto err_xa_alloc; + } + + err = mlxsw_sp_port_range_reg_configure(mlxsw_sp, prr); + if (err) { + NL_SET_ERR_MSG_MOD(extack, "Failed to configure port range register"); + goto err_reg_configure; + } + + return prr; + +err_reg_configure: + xa_erase(&pr_core->prr_xa, prr->index); +err_xa_alloc: + kfree(prr); + return ERR_PTR(err); +} + +static void mlxsw_sp_port_range_reg_destroy(struct mlxsw_sp *mlxsw_sp, + struct mlxsw_sp_port_range_reg *prr) +{ + struct mlxsw_sp_port_range_core *pr_core = mlxsw_sp->pr_core; + + xa_erase(&pr_core->prr_xa, prr->index); + kfree(prr); +} + +static struct mlxsw_sp_port_range_reg * +mlxsw_sp_port_range_reg_find(struct mlxsw_sp *mlxsw_sp, + const struct mlxsw_sp_port_range *range) +{ + struct mlxsw_sp_port_range_core *pr_core = mlxsw_sp->pr_core; + struct mlxsw_sp_port_range_reg *prr; + unsigned long index; + + xa_for_each(&pr_core->prr_xa, index, prr) { + if (prr->range.min == range->min && + prr->range.max == range->max && + prr->range.source == range->source) + return prr; + } + + return NULL; +} + +int mlxsw_sp_port_range_reg_get(struct mlxsw_sp *mlxsw_sp, + const struct mlxsw_sp_port_range *range, + struct netlink_ext_ack *extack, + u8 *p_prr_index) +{ + struct mlxsw_sp_port_range_reg *prr; + + prr = mlxsw_sp_port_range_reg_find(mlxsw_sp, range); + if (prr) { + refcount_inc(&prr->refcount); + *p_prr_index = prr->index; + return 0; + } + + prr = mlxsw_sp_port_range_reg_create(mlxsw_sp, range, extack); + if (IS_ERR(prr)) + return PTR_ERR(prr); + + *p_prr_index = prr->index; + + return 0; +} + +void mlxsw_sp_port_range_reg_put(struct mlxsw_sp *mlxsw_sp, u8 prr_index) +{ + struct mlxsw_sp_port_range_core *pr_core = mlxsw_sp->pr_core; + struct mlxsw_sp_port_range_reg *prr; + + prr = xa_load(&pr_core->prr_xa, prr_index); + if (WARN_ON(!prr)) + return; + + if (!refcount_dec_and_test(&prr->refcount)) + return; + + mlxsw_sp_port_range_reg_destroy(mlxsw_sp, prr); +} + +int mlxsw_sp_port_range_init(struct mlxsw_sp *mlxsw_sp) +{ + struct mlxsw_sp_port_range_core *pr_core; + struct mlxsw_core *core = mlxsw_sp->core; + u64 max; + + if (!MLXSW_CORE_RES_VALID(core, ACL_MAX_L4_PORT_RANGE)) + return -EIO; + max = MLXSW_CORE_RES_GET(core, ACL_MAX_L4_PORT_RANGE); + + /* Each port range register is represented using a single bit in the + * two bytes "l4_port_range" ACL key element. + */ + WARN_ON(max > BITS_PER_BYTE * sizeof(u16)); + + pr_core = kzalloc(sizeof(*mlxsw_sp->pr_core), GFP_KERNEL); + if (!pr_core) + return -ENOMEM; + mlxsw_sp->pr_core = pr_core; + + pr_core->prr_ids.max = max - 1; + xa_init_flags(&pr_core->prr_xa, XA_FLAGS_ALLOC); + + return 0; +} + +void mlxsw_sp_port_range_fini(struct mlxsw_sp *mlxsw_sp) +{ + struct mlxsw_sp_port_range_core *pr_core = mlxsw_sp->pr_core; + + WARN_ON(!xa_empty(&pr_core->prr_xa)); + xa_destroy(&pr_core->prr_xa); + kfree(pr_core); +} |