diff options
Diffstat (limited to 'drivers/net')
5 files changed, 762 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c index ab5bc82855fd..9f1b1939716a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/accel/ipsec.c @@ -100,3 +100,10 @@ void mlx5_accel_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm) mlx5_fpga_esp_destroy_xfrm(xfrm); } EXPORT_SYMBOL_GPL(mlx5_accel_esp_destroy_xfrm); + +int mlx5_accel_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm, + const struct mlx5_accel_esp_xfrm_attrs *attrs) +{ + return mlx5_fpga_esp_modify_xfrm(xfrm, attrs); +} +EXPORT_SYMBOL_GPL(mlx5_accel_esp_modify_xfrm); diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c index daae44c937f0..7b43fa269117 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.c @@ -33,8 +33,12 @@ #include <linux/rhashtable.h> #include <linux/mlx5/driver.h> +#include <linux/mlx5/fs_helpers.h> +#include <linux/mlx5/fs.h> +#include <linux/rbtree.h> #include "mlx5_core.h" +#include "fs_cmd.h" #include "fpga/ipsec.h" #include "fpga/sdk.h" #include "fpga/core.h" @@ -75,6 +79,12 @@ struct mlx5_fpga_esp_xfrm { struct mlx5_accel_esp_xfrm accel_xfrm; }; +struct mlx5_fpga_ipsec_rule { + struct rb_node node; + struct fs_fte *fte; + struct mlx5_fpga_ipsec_sa_ctx *ctx; +}; + static const struct rhashtable_params rhash_sa = { .key_len = FIELD_SIZEOF(struct mlx5_fpga_ipsec_sa_ctx, hw_sa), .key_offset = offsetof(struct mlx5_fpga_ipsec_sa_ctx, hw_sa), @@ -84,11 +94,15 @@ static const struct rhashtable_params rhash_sa = { }; struct mlx5_fpga_ipsec { + struct mlx5_fpga_device *fdev; struct list_head pending_cmds; spinlock_t pending_cmds_lock; /* Protects pending_cmds */ u32 caps[MLX5_ST_SZ_DW(ipsec_extended_cap)]; struct mlx5_fpga_conn *conn; + struct notifier_block fs_notifier_ingress_bypass; + struct notifier_block fs_notifier_egress; + /* Map hardware SA --> SA context * (mlx5_fpga_ipsec_sa) (mlx5_fpga_ipsec_sa_ctx) * We will use this hash to avoid SAs duplication in fpga which @@ -96,6 +110,12 @@ struct mlx5_fpga_ipsec { */ struct rhashtable sa_hash; /* hw_sa -> mlx5_fpga_ipsec_sa_ctx */ struct mutex sa_hash_lock; + + /* Tree holding all rules for this fpga device + * Key for searching a rule (mlx5_fpga_ipsec_rule) is (ft, id) + */ + struct rb_root rules_rb; + struct mutex rules_rb_lock; /* rules lock */ }; static bool mlx5_fpga_is_ipsec_device(struct mlx5_core_dev *mdev) @@ -498,6 +518,127 @@ mlx5_fpga_ipsec_build_hw_sa(struct mlx5_core_dev *mdev, hw_sa->ipsec_sa_v1.flags |= MLX5_FPGA_IPSEC_SA_IPV6; } +static bool is_full_mask(const void *p, size_t len) +{ + WARN_ON(len % 4); + + return !memchr_inv(p, 0xff, len); +} + +static bool validate_fpga_full_mask(struct mlx5_core_dev *dev, + const u32 *match_c, + const u32 *match_v) +{ + const void *misc_params_c = MLX5_ADDR_OF(fte_match_param, + match_c, + misc_parameters); + const void *headers_c = MLX5_ADDR_OF(fte_match_param, + match_c, + outer_headers); + const void *headers_v = MLX5_ADDR_OF(fte_match_param, + match_v, + outer_headers); + + if (mlx5_fs_is_outer_ipv4_flow(dev, headers_c, headers_v)) { + const void *s_ipv4_c = MLX5_ADDR_OF(fte_match_set_lyr_2_4, + headers_c, + src_ipv4_src_ipv6.ipv4_layout.ipv4); + const void *d_ipv4_c = MLX5_ADDR_OF(fte_match_set_lyr_2_4, + headers_c, + dst_ipv4_dst_ipv6.ipv4_layout.ipv4); + + if (!is_full_mask(s_ipv4_c, MLX5_FLD_SZ_BYTES(ipv4_layout, + ipv4)) || + !is_full_mask(d_ipv4_c, MLX5_FLD_SZ_BYTES(ipv4_layout, + ipv4))) + return false; + } else { + const void *s_ipv6_c = MLX5_ADDR_OF(fte_match_set_lyr_2_4, + headers_c, + src_ipv4_src_ipv6.ipv6_layout.ipv6); + const void *d_ipv6_c = MLX5_ADDR_OF(fte_match_set_lyr_2_4, + headers_c, + dst_ipv4_dst_ipv6.ipv6_layout.ipv6); + + if (!is_full_mask(s_ipv6_c, MLX5_FLD_SZ_BYTES(ipv6_layout, + ipv6)) || + !is_full_mask(d_ipv6_c, MLX5_FLD_SZ_BYTES(ipv6_layout, + ipv6))) + return false; + } + + if (!is_full_mask(MLX5_ADDR_OF(fte_match_set_misc, misc_params_c, + outer_esp_spi), + MLX5_FLD_SZ_BYTES(fte_match_set_misc, outer_esp_spi))) + return false; + + return true; +} + +static bool mlx5_is_fpga_ipsec_rule(struct mlx5_core_dev *dev, + u8 match_criteria_enable, + const u32 *match_c, + const u32 *match_v) +{ + u32 ipsec_dev_caps = mlx5_accel_ipsec_device_caps(dev); + bool ipv6_flow; + + ipv6_flow = mlx5_fs_is_outer_ipv6_flow(dev, match_c, match_v); + + if (!(match_criteria_enable & MLX5_MATCH_OUTER_HEADERS) || + mlx5_fs_is_outer_udp_flow(match_c, match_v) || + mlx5_fs_is_outer_tcp_flow(match_c, match_v) || + mlx5_fs_is_vxlan_flow(match_c) || + !(mlx5_fs_is_outer_ipv4_flow(dev, match_c, match_v) || + ipv6_flow)) + return false; + + if (!(ipsec_dev_caps & MLX5_ACCEL_IPSEC_CAP_DEVICE)) + return false; + + if (!(ipsec_dev_caps & MLX5_ACCEL_IPSEC_CAP_ESP) && + mlx5_fs_is_outer_ipsec_flow(match_c)) + return false; + + if (!(ipsec_dev_caps & MLX5_ACCEL_IPSEC_CAP_IPV6) && + ipv6_flow) + return false; + + if (!validate_fpga_full_mask(dev, match_c, match_v)) + return false; + + return true; +} + +static bool mlx5_is_fpga_egress_ipsec_rule(struct mlx5_core_dev *dev, + u8 match_criteria_enable, + const u32 *match_c, + const u32 *match_v, + struct mlx5_flow_act *flow_act) +{ + const void *outer_c = MLX5_ADDR_OF(fte_match_param, match_c, + outer_headers); + bool is_dmac = MLX5_GET(fte_match_set_lyr_2_4, outer_c, dmac_47_16) || + MLX5_GET(fte_match_set_lyr_2_4, outer_c, dmac_15_0); + bool is_smac = MLX5_GET(fte_match_set_lyr_2_4, outer_c, smac_47_16) || + MLX5_GET(fte_match_set_lyr_2_4, outer_c, smac_15_0); + int ret; + + ret = mlx5_is_fpga_ipsec_rule(dev, match_criteria_enable, match_c, + match_v); + if (!ret) + return ret; + + if (is_dmac || is_smac || + (match_criteria_enable & + ~(MLX5_MATCH_OUTER_HEADERS | MLX5_MATCH_MISC_PARAMETERS)) || + (flow_act->action & ~(MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | MLX5_FLOW_CONTEXT_ACTION_ALLOW)) || + flow_act->has_flow_tag) + return false; + + return true; +} + void *mlx5_fpga_ipsec_create_sa_ctx(struct mlx5_core_dev *mdev, struct mlx5_accel_esp_xfrm *accel_xfrm, const __be32 saddr[4], @@ -587,6 +728,73 @@ exists: return context; } +static void * +mlx5_fpga_ipsec_fs_create_sa_ctx(struct mlx5_core_dev *mdev, + struct fs_fte *fte, + bool is_egress) +{ + struct mlx5_accel_esp_xfrm *accel_xfrm; + __be32 saddr[4], daddr[4], spi; + struct mlx5_flow_group *fg; + bool is_ipv6 = false; + + fs_get_obj(fg, fte->node.parent); + /* validate */ + if (is_egress && + !mlx5_is_fpga_egress_ipsec_rule(mdev, + fg->mask.match_criteria_enable, + fg->mask.match_criteria, + fte->val, + &fte->action)) + return ERR_PTR(-EINVAL); + else if (!mlx5_is_fpga_ipsec_rule(mdev, + fg->mask.match_criteria_enable, + fg->mask.match_criteria, + fte->val)) + return ERR_PTR(-EINVAL); + + /* get xfrm context */ + accel_xfrm = + (struct mlx5_accel_esp_xfrm *)fte->action.esp_id; + + /* IPs */ + if (mlx5_fs_is_outer_ipv4_flow(mdev, fg->mask.match_criteria, + fte->val)) { + memcpy(&saddr[3], + MLX5_ADDR_OF(fte_match_set_lyr_2_4, + fte->val, + src_ipv4_src_ipv6.ipv4_layout.ipv4), + sizeof(saddr[3])); + memcpy(&daddr[3], + MLX5_ADDR_OF(fte_match_set_lyr_2_4, + fte->val, + dst_ipv4_dst_ipv6.ipv4_layout.ipv4), + sizeof(daddr[3])); + } else { + memcpy(saddr, + MLX5_ADDR_OF(fte_match_param, + fte->val, + outer_headers.src_ipv4_src_ipv6.ipv6_layout.ipv6), + sizeof(saddr)); + memcpy(daddr, + MLX5_ADDR_OF(fte_match_param, + fte->val, + outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6), + sizeof(daddr)); + is_ipv6 = true; + } + + /* SPI */ + spi = MLX5_GET_BE(typeof(spi), + fte_match_param, fte->val, + misc_parameters.outer_esp_spi); + + /* create */ + return mlx5_fpga_ipsec_create_sa_ctx(mdev, accel_xfrm, + saddr, daddr, + spi, is_ipv6); +} + static void mlx5_fpga_ipsec_release_sa_ctx(struct mlx5_fpga_ipsec_sa_ctx *sa_ctx) { @@ -623,6 +831,389 @@ void mlx5_fpga_ipsec_delete_sa_ctx(void *context) mutex_unlock(&fpga_xfrm->lock); } +static inline struct mlx5_fpga_ipsec_rule * +_rule_search(struct rb_root *root, struct fs_fte *fte) +{ + struct rb_node *node = root->rb_node; + + while (node) { + struct mlx5_fpga_ipsec_rule *rule = + container_of(node, struct mlx5_fpga_ipsec_rule, + node); + + if (rule->fte < fte) + node = node->rb_left; + else if (rule->fte > fte) + node = node->rb_right; + else + return rule; + } + return NULL; +} + +static struct mlx5_fpga_ipsec_rule * +rule_search(struct mlx5_fpga_ipsec *ipsec_dev, struct fs_fte *fte) +{ + struct mlx5_fpga_ipsec_rule *rule; + + mutex_lock(&ipsec_dev->rules_rb_lock); + rule = _rule_search(&ipsec_dev->rules_rb, fte); + mutex_unlock(&ipsec_dev->rules_rb_lock); + + return rule; +} + +static inline int _rule_insert(struct rb_root *root, + struct mlx5_fpga_ipsec_rule *rule) +{ + struct rb_node **new = &root->rb_node, *parent = NULL; + + /* Figure out where to put new node */ + while (*new) { + struct mlx5_fpga_ipsec_rule *this = + container_of(*new, struct mlx5_fpga_ipsec_rule, + node); + + parent = *new; + if (rule->fte < this->fte) + new = &((*new)->rb_left); + else if (rule->fte > this->fte) + new = &((*new)->rb_right); + else + return -EEXIST; + } + + /* Add new node and rebalance tree. */ + rb_link_node(&rule->node, parent, new); + rb_insert_color(&rule->node, root); + + return 0; +} + +static int rule_insert(struct mlx5_fpga_ipsec *ipsec_dev, + struct mlx5_fpga_ipsec_rule *rule) +{ + int ret; + + mutex_lock(&ipsec_dev->rules_rb_lock); + ret = _rule_insert(&ipsec_dev->rules_rb, rule); + mutex_unlock(&ipsec_dev->rules_rb_lock); + + return ret; +} + +static inline void _rule_delete(struct mlx5_fpga_ipsec *ipsec_dev, + struct mlx5_fpga_ipsec_rule *rule) +{ + struct rb_root *root = &ipsec_dev->rules_rb; + + mutex_lock(&ipsec_dev->rules_rb_lock); + rb_erase(&rule->node, root); + mutex_unlock(&ipsec_dev->rules_rb_lock); +} + +static void rule_delete(struct mlx5_fpga_ipsec *ipsec_dev, + struct mlx5_fpga_ipsec_rule *rule) +{ + _rule_delete(ipsec_dev, rule); + kfree(rule); +} + +struct mailbox_mod { + uintptr_t saved_esp_id; + u32 saved_action; + u32 saved_outer_esp_spi_value; +}; + +static void restore_spec_mailbox(struct fs_fte *fte, + struct mailbox_mod *mbox_mod) +{ + char *misc_params_v = MLX5_ADDR_OF(fte_match_param, + fte->val, + misc_parameters); + + MLX5_SET(fte_match_set_misc, misc_params_v, outer_esp_spi, + mbox_mod->saved_outer_esp_spi_value); + fte->action.action |= mbox_mod->saved_action; + fte->action.esp_id = (uintptr_t)mbox_mod->saved_esp_id; +} + +static void modify_spec_mailbox(struct mlx5_core_dev *mdev, + struct fs_fte *fte, + struct mailbox_mod *mbox_mod) +{ + char *misc_params_v = MLX5_ADDR_OF(fte_match_param, + fte->val, + misc_parameters); + + mbox_mod->saved_esp_id = fte->action.esp_id; + mbox_mod->saved_action = fte->action.action & + (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | + MLX5_FLOW_CONTEXT_ACTION_DECRYPT); + mbox_mod->saved_outer_esp_spi_value = + MLX5_GET(fte_match_set_misc, misc_params_v, + outer_esp_spi); + + fte->action.esp_id = 0; + fte->action.action &= ~(MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | + MLX5_FLOW_CONTEXT_ACTION_DECRYPT); + if (!MLX5_CAP_FLOWTABLE(mdev, + flow_table_properties_nic_receive.ft_field_support.outer_esp_spi)) + MLX5_SET(fte_match_set_misc, misc_params_v, outer_esp_spi, 0); +} + +static enum fs_flow_table_type egress_to_fs_ft(bool egress) +{ + return egress ? FS_FT_NIC_TX : FS_FT_NIC_RX; +} + +static int fpga_ipsec_fs_create_flow_group(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + u32 *in, + unsigned int *group_id, + bool is_egress) +{ + int (*create_flow_group)(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, u32 *in, + unsigned int *group_id) = + mlx5_fs_cmd_get_default(egress_to_fs_ft(is_egress))->create_flow_group; + char *misc_params_c = MLX5_ADDR_OF(create_flow_group_in, in, + match_criteria.misc_parameters); + u32 saved_outer_esp_spi_mask; + u8 match_criteria_enable; + int ret; + + if (MLX5_CAP_FLOWTABLE(dev, + flow_table_properties_nic_receive.ft_field_support.outer_esp_spi)) + return create_flow_group(dev, ft, in, group_id); + + match_criteria_enable = + MLX5_GET(create_flow_group_in, in, match_criteria_enable); + saved_outer_esp_spi_mask = + MLX5_GET(fte_match_set_misc, misc_params_c, outer_esp_spi); + if (!match_criteria_enable || !saved_outer_esp_spi_mask) + return create_flow_group(dev, ft, in, group_id); + + MLX5_SET(fte_match_set_misc, misc_params_c, outer_esp_spi, 0); + + if (!(*misc_params_c) && + !memcmp(misc_params_c, misc_params_c + 1, MLX5_ST_SZ_BYTES(fte_match_set_misc) - 1)) + MLX5_SET(create_flow_group_in, in, match_criteria_enable, + match_criteria_enable & ~MLX5_MATCH_MISC_PARAMETERS); + + ret = create_flow_group(dev, ft, in, group_id); + + MLX5_SET(fte_match_set_misc, misc_params_c, outer_esp_spi, saved_outer_esp_spi_mask); + MLX5_SET(create_flow_group_in, in, match_criteria_enable, match_criteria_enable); + + return ret; +} + +static int fpga_ipsec_fs_create_fte(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct mlx5_flow_group *fg, + struct fs_fte *fte, + bool is_egress) +{ + int (*create_fte)(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct mlx5_flow_group *fg, + struct fs_fte *fte) = + mlx5_fs_cmd_get_default(egress_to_fs_ft(is_egress))->create_fte; + struct mlx5_fpga_device *fdev = dev->fpga; + struct mlx5_fpga_ipsec *fipsec = fdev->ipsec; + struct mlx5_fpga_ipsec_rule *rule; + bool is_esp = fte->action.esp_id; + struct mailbox_mod mbox_mod; + int ret; + + if (!is_esp || + !(fte->action.action & + (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | + MLX5_FLOW_CONTEXT_ACTION_DECRYPT))) + return create_fte(dev, ft, fg, fte); + + rule = kzalloc(sizeof(*rule), GFP_KERNEL); + if (!rule) + return -ENOMEM; + + rule->ctx = mlx5_fpga_ipsec_fs_create_sa_ctx(dev, fte, is_egress); + if (IS_ERR(rule->ctx)) { + kfree(rule); + return PTR_ERR(rule->ctx); + } + + rule->fte = fte; + WARN_ON(rule_insert(fipsec, rule)); + + modify_spec_mailbox(dev, fte, &mbox_mod); + ret = create_fte(dev, ft, fg, fte); + restore_spec_mailbox(fte, &mbox_mod); + if (ret) { + _rule_delete(fipsec, rule); + mlx5_fpga_ipsec_delete_sa_ctx(rule->ctx); + kfree(rule); + } + + return ret; +} + +static int fpga_ipsec_fs_update_fte(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + unsigned int group_id, + int modify_mask, + struct fs_fte *fte, + bool is_egress) +{ + int (*update_fte)(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + unsigned int group_id, + int modify_mask, + struct fs_fte *fte) = + mlx5_fs_cmd_get_default(egress_to_fs_ft(is_egress))->update_fte; + bool is_esp = fte->action.esp_id; + struct mailbox_mod mbox_mod; + int ret; + + if (!is_esp || + !(fte->action.action & + (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | + MLX5_FLOW_CONTEXT_ACTION_DECRYPT))) + return update_fte(dev, ft, group_id, modify_mask, fte); + + modify_spec_mailbox(dev, fte, &mbox_mod); + ret = update_fte(dev, ft, group_id, modify_mask, fte); + restore_spec_mailbox(fte, &mbox_mod); + + return ret; +} + +static int fpga_ipsec_fs_delete_fte(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct fs_fte *fte, + bool is_egress) +{ + int (*delete_fte)(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct fs_fte *fte) = + mlx5_fs_cmd_get_default(egress_to_fs_ft(is_egress))->delete_fte; + struct mlx5_fpga_device *fdev = dev->fpga; + struct mlx5_fpga_ipsec *fipsec = fdev->ipsec; + struct mlx5_fpga_ipsec_rule *rule; + bool is_esp = fte->action.esp_id; + struct mailbox_mod mbox_mod; + int ret; + + if (!is_esp || + !(fte->action.action & + (MLX5_FLOW_CONTEXT_ACTION_ENCRYPT | + MLX5_FLOW_CONTEXT_ACTION_DECRYPT))) + return delete_fte(dev, ft, fte); + + rule = rule_search(fipsec, fte); + if (!rule) + return -ENOENT; + + mlx5_fpga_ipsec_delete_sa_ctx(rule->ctx); + rule_delete(fipsec, rule); + + modify_spec_mailbox(dev, fte, &mbox_mod); + ret = delete_fte(dev, ft, fte); + restore_spec_mailbox(fte, &mbox_mod); + + return ret; +} + +static int +mlx5_fpga_ipsec_fs_create_flow_group_egress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + u32 *in, + unsigned int *group_id) +{ + return fpga_ipsec_fs_create_flow_group(dev, ft, in, group_id, true); +} + +static int +mlx5_fpga_ipsec_fs_create_fte_egress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct mlx5_flow_group *fg, + struct fs_fte *fte) +{ + return fpga_ipsec_fs_create_fte(dev, ft, fg, fte, true); +} + +static int +mlx5_fpga_ipsec_fs_update_fte_egress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + unsigned int group_id, + int modify_mask, + struct fs_fte *fte) +{ + return fpga_ipsec_fs_update_fte(dev, ft, group_id, modify_mask, fte, + true); +} + +static int +mlx5_fpga_ipsec_fs_delete_fte_egress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct fs_fte *fte) +{ + return fpga_ipsec_fs_delete_fte(dev, ft, fte, true); +} + +static int +mlx5_fpga_ipsec_fs_create_flow_group_ingress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + u32 *in, + unsigned int *group_id) +{ + return fpga_ipsec_fs_create_flow_group(dev, ft, in, group_id, false); +} + +static int +mlx5_fpga_ipsec_fs_create_fte_ingress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct mlx5_flow_group *fg, + struct fs_fte *fte) +{ + return fpga_ipsec_fs_create_fte(dev, ft, fg, fte, false); +} + +static int +mlx5_fpga_ipsec_fs_update_fte_ingress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + unsigned int group_id, + int modify_mask, + struct fs_fte *fte) +{ + return fpga_ipsec_fs_update_fte(dev, ft, group_id, modify_mask, fte, + false); +} + +static int +mlx5_fpga_ipsec_fs_delete_fte_ingress(struct mlx5_core_dev *dev, + struct mlx5_flow_table *ft, + struct fs_fte *fte) +{ + return fpga_ipsec_fs_delete_fte(dev, ft, fte, false); +} + +static struct mlx5_flow_cmds fpga_ipsec_ingress; +static struct mlx5_flow_cmds fpga_ipsec_egress; + +const struct mlx5_flow_cmds *mlx5_fs_cmd_get_default_ipsec_fpga_cmds(enum fs_flow_table_type type) +{ + switch (type) { + case FS_FT_NIC_RX: + return &fpga_ipsec_ingress; + case FS_FT_NIC_TX: + return &fpga_ipsec_egress; + default: + WARN_ON(true); + return NULL; + } +} + int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev) { struct mlx5_fpga_conn_attr init_attr = {0}; @@ -637,6 +1228,8 @@ int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev) if (!fdev->ipsec) return -ENOMEM; + fdev->ipsec->fdev = fdev; + err = mlx5_fpga_get_sbu_caps(fdev, sizeof(fdev->ipsec->caps), fdev->ipsec->caps); if (err) { @@ -666,6 +1259,9 @@ int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev) goto err_destroy_conn; mutex_init(&fdev->ipsec->sa_hash_lock); + fdev->ipsec->rules_rb = RB_ROOT; + mutex_init(&fdev->ipsec->rules_rb_lock); + err = mlx5_fpga_ipsec_enable_supported_caps(mdev); if (err) { mlx5_fpga_err(fdev, "Failed to enable IPSec extended capabilities: %d\n", @@ -687,6 +1283,17 @@ error: return err; } +static void destroy_rules_rb(struct rb_root *root) +{ + struct mlx5_fpga_ipsec_rule *r, *tmp; + + rbtree_postorder_for_each_entry_safe(r, tmp, root, node) { + rb_erase(&r->node, root); + mlx5_fpga_ipsec_delete_sa_ctx(r->ctx); + kfree(r); + } +} + void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev) { struct mlx5_fpga_device *fdev = mdev->fpga; @@ -694,6 +1301,7 @@ void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev) if (!mlx5_fpga_is_ipsec_device(mdev)) return; + destroy_rules_rb(&fdev->ipsec->rules_rb); rhashtable_destroy(&fdev->ipsec->sa_hash); mlx5_fpga_sbu_conn_destroy(fdev->ipsec->conn); @@ -701,6 +1309,49 @@ void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev) fdev->ipsec = NULL; } +void mlx5_fpga_ipsec_build_fs_cmds(void) +{ + /* ingress */ + fpga_ipsec_ingress.create_flow_table = + mlx5_fs_cmd_get_default(egress_to_fs_ft(false))->create_flow_table; + fpga_ipsec_ingress.destroy_flow_table = + mlx5_fs_cmd_get_default(egress_to_fs_ft(false))->destroy_flow_table; + fpga_ipsec_ingress.modify_flow_table = + mlx5_fs_cmd_get_default(egress_to_fs_ft(false))->modify_flow_table; + fpga_ipsec_ingress.create_flow_group = + mlx5_fpga_ipsec_fs_create_flow_group_ingress; + fpga_ipsec_ingress.destroy_flow_group = + mlx5_fs_cmd_get_default(egress_to_fs_ft(false))->destroy_flow_group; + fpga_ipsec_ingress.create_fte = + mlx5_fpga_ipsec_fs_create_fte_ingress; + fpga_ipsec_ingress.update_fte = + mlx5_fpga_ipsec_fs_update_fte_ingress; + fpga_ipsec_ingress.delete_fte = + mlx5_fpga_ipsec_fs_delete_fte_ingress; + fpga_ipsec_ingress.update_root_ft = + mlx5_fs_cmd_get_default(egress_to_fs_ft(false))->update_root_ft; + + /* egress */ + fpga_ipsec_egress.create_flow_table = + mlx5_fs_cmd_get_default(egress_to_fs_ft(true))->create_flow_table; + fpga_ipsec_egress.destroy_flow_table = + mlx5_fs_cmd_get_default(egress_to_fs_ft(true))->destroy_flow_table; + fpga_ipsec_egress.modify_flow_table = + mlx5_fs_cmd_get_default(egress_to_fs_ft(true))->modify_flow_table; + fpga_ipsec_egress.create_flow_group = + mlx5_fpga_ipsec_fs_create_flow_group_egress; + fpga_ipsec_egress.destroy_flow_group = + mlx5_fs_cmd_get_default(egress_to_fs_ft(true))->destroy_flow_group; + fpga_ipsec_egress.create_fte = + mlx5_fpga_ipsec_fs_create_fte_egress; + fpga_ipsec_egress.update_fte = + mlx5_fpga_ipsec_fs_update_fte_egress; + fpga_ipsec_egress.delete_fte = + mlx5_fpga_ipsec_fs_delete_fte_egress; + fpga_ipsec_egress.update_root_ft = + mlx5_fs_cmd_get_default(egress_to_fs_ft(true))->update_root_ft; +} + static int mlx5_fpga_esp_validate_xfrm_attrs(struct mlx5_core_dev *mdev, const struct mlx5_accel_esp_xfrm_attrs *attrs) @@ -783,3 +1434,76 @@ void mlx5_fpga_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm) /* assuming no sa_ctx are connected to this xfrm_ctx */ kfree(fpga_xfrm); } + +int mlx5_fpga_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm, + const struct mlx5_accel_esp_xfrm_attrs *attrs) +{ + struct mlx5_core_dev *mdev = xfrm->mdev; + struct mlx5_fpga_device *fdev = mdev->fpga; + struct mlx5_fpga_ipsec *fipsec = fdev->ipsec; + struct mlx5_fpga_esp_xfrm *fpga_xfrm; + struct mlx5_ifc_fpga_ipsec_sa org_hw_sa; + + int err = 0; + + if (!memcmp(&xfrm->attrs, attrs, sizeof(xfrm->attrs))) + return 0; + + if (!mlx5_fpga_esp_validate_xfrm_attrs(mdev, attrs)) { + mlx5_core_warn(mdev, "Tried to create an esp with unsupported attrs\n"); + return -EOPNOTSUPP; + } + + if (is_v2_sadb_supported(fipsec)) { + mlx5_core_warn(mdev, "Modify esp is not supported\n"); + return -EOPNOTSUPP; + } + + fpga_xfrm = container_of(xfrm, struct mlx5_fpga_esp_xfrm, accel_xfrm); + + mutex_lock(&fpga_xfrm->lock); + + if (!fpga_xfrm->sa_ctx) + /* Unbounded xfrm, chane only sw attrs */ + goto change_sw_xfrm_attrs; + + /* copy original hw sa */ + memcpy(&org_hw_sa, &fpga_xfrm->sa_ctx->hw_sa, sizeof(org_hw_sa)); + mutex_lock(&fipsec->sa_hash_lock); + /* remove original hw sa from hash */ + WARN_ON(rhashtable_remove_fast(&fipsec->sa_hash, + &fpga_xfrm->sa_ctx->hash, rhash_sa)); + /* update hw_sa with new xfrm attrs*/ + mlx5_fpga_ipsec_build_hw_xfrm(xfrm->mdev, attrs, + &fpga_xfrm->sa_ctx->hw_sa); + /* try to insert new hw_sa to hash */ + err = rhashtable_insert_fast(&fipsec->sa_hash, + &fpga_xfrm->sa_ctx->hash, rhash_sa); + if (err) + goto rollback_sa; + + /* modify device with new hw_sa */ + err = mlx5_fpga_ipsec_update_hw_sa(fdev, &fpga_xfrm->sa_ctx->hw_sa, + MLX5_FPGA_IPSEC_CMD_OP_MOD_SA_V2); + fpga_xfrm->sa_ctx->hw_sa.ipsec_sa_v1.cmd = 0; + if (err) + WARN_ON(rhashtable_remove_fast(&fipsec->sa_hash, + &fpga_xfrm->sa_ctx->hash, + rhash_sa)); +rollback_sa: + if (err) { + /* return original hw_sa to hash */ + memcpy(&fpga_xfrm->sa_ctx->hw_sa, &org_hw_sa, + sizeof(org_hw_sa)); + WARN_ON(rhashtable_insert_fast(&fipsec->sa_hash, + &fpga_xfrm->sa_ctx->hash, + rhash_sa)); + } + mutex_unlock(&fipsec->sa_hash_lock); + +change_sw_xfrm_attrs: + if (!err) + memcpy(&xfrm->attrs, attrs, sizeof(xfrm->attrs)); + mutex_unlock(&fpga_xfrm->lock); + return err; +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h index 7ad1e2cd3fb0..2b5e63b0d4d6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/ipsec.h @@ -35,6 +35,7 @@ #define __MLX5_FPGA_IPSEC_H__ #include "accel/ipsec.h" +#include "fs_cmd.h" #ifdef CONFIG_MLX5_FPGA @@ -52,12 +53,18 @@ void mlx5_fpga_ipsec_delete_sa_ctx(void *context); int mlx5_fpga_ipsec_init(struct mlx5_core_dev *mdev); void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev); +void mlx5_fpga_ipsec_build_fs_cmds(void); struct mlx5_accel_esp_xfrm * mlx5_fpga_esp_create_xfrm(struct mlx5_core_dev *mdev, const struct mlx5_accel_esp_xfrm_attrs *attrs, u32 flags); void mlx5_fpga_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm); +int mlx5_fpga_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm, + const struct mlx5_accel_esp_xfrm_attrs *attrs); + +const struct mlx5_flow_cmds * +mlx5_fs_cmd_get_default_ipsec_fpga_cmds(enum fs_flow_table_type type); #else @@ -101,6 +108,10 @@ static inline void mlx5_fpga_ipsec_cleanup(struct mlx5_core_dev *mdev) { } +static inline void mlx5_fpga_ipsec_build_fs_cmds(void) +{ +} + static inline struct mlx5_accel_esp_xfrm * mlx5_fpga_esp_create_xfrm(struct mlx5_core_dev *mdev, const struct mlx5_accel_esp_xfrm_attrs *attrs, @@ -113,6 +124,19 @@ static inline void mlx5_fpga_esp_destroy_xfrm(struct mlx5_accel_esp_xfrm *xfrm) { } +static inline int +mlx5_fpga_esp_modify_xfrm(struct mlx5_accel_esp_xfrm *xfrm, + const struct mlx5_accel_esp_xfrm_attrs *attrs) +{ + return -EOPNOTSUPP; +} + +static inline const struct mlx5_flow_cmds * +mlx5_fs_cmd_get_default_ipsec_fpga_cmds(enum fs_flow_table_type type) +{ + return mlx5_fs_cmd_get_default(type); +} + #endif /* CONFIG_MLX5_FPGA */ #endif /* __MLX5_FPGA_SADB_H__ */ diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index f836e6b76f65..09aad58c8e06 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -38,6 +38,7 @@ #include "fs_cmd.h" #include "diag/fs_tracepoint.h" #include "accel/ipsec.h" +#include "fpga/ipsec.h" #define INIT_TREE_NODE_ARRAY_SIZE(...) (sizeof((struct init_tree_node[]){__VA_ARGS__}) /\ sizeof(struct init_tree_node)) @@ -2251,6 +2252,10 @@ static struct mlx5_flow_root_namespace struct mlx5_flow_root_namespace *root_ns; struct mlx5_flow_namespace *ns; + if (mlx5_accel_ipsec_device_caps(steering->dev) & MLX5_ACCEL_IPSEC_CAP_DEVICE && + (table_type == FS_FT_NIC_RX || table_type == FS_FT_NIC_TX)) + cmds = mlx5_fs_cmd_get_default_ipsec_fpga_cmds(table_type); + /* Create the root namespace */ root_ns = kvzalloc(sizeof(*root_ns), GFP_KERNEL); if (!root_ns) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c index 03972eed02cd..08c33657677c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c @@ -58,6 +58,7 @@ #include "eswitch.h" #include "lib/mlx5.h" #include "fpga/core.h" +#include "fpga/ipsec.h" #include "accel/ipsec.h" #include "lib/clock.h" @@ -1658,6 +1659,7 @@ static int __init init(void) get_random_bytes(&sw_owner_id, sizeof(sw_owner_id)); mlx5_core_verify_params(); + mlx5_fpga_ipsec_build_fs_cmds(); mlx5_register_debugfs(); err = pci_register_driver(&mlx5_core_driver); |