From dfcb1ed3c3315902e33da0fc5b0ae4c6d5086a23 Mon Sep 17 00:00:00 2001 From: Mohamad Haj Yahia Date: Tue, 3 May 2016 17:13:58 +0300 Subject: [PATCH] net/mlx5: E-Switch, Vport ingress/egress ACLs rules for VST mode Configure ingress and egress vport ACL rules according to vlan and qos admin parameters. Ingress ACL flow table rules: 1) drop any tagged packet sent from the VF 2) allow other traffic (default behavior) Egress ACL flow table rules: 1) allow only tagged traffic with vlan_tag=vst_vid. 2) drop other traffic. Signed-off-by: Mohamad Haj Yahia Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/eswitch.c | 180 +++++++++++++++++- .../net/ethernet/mellanox/mlx5/core/eswitch.h | 11 +- 2 files changed, 189 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index f1a0f1845058..1e075ed50e5b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -789,6 +789,19 @@ out: mlx5_destroy_flow_table(acl); } +static void esw_vport_cleanup_egress_rules(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + if (!IS_ERR_OR_NULL(vport->egress.allowed_vlan)) + mlx5_del_flow_rule(vport->egress.allowed_vlan); + + if (!IS_ERR_OR_NULL(vport->egress.drop_rule)) + mlx5_del_flow_rule(vport->egress.drop_rule); + + vport->egress.allowed_vlan = NULL; + vport->egress.drop_rule = NULL; +} + static void esw_vport_disable_egress_acl(struct mlx5_eswitch *esw, struct mlx5_vport *vport) { @@ -797,6 +810,7 @@ static void esw_vport_disable_egress_acl(struct mlx5_eswitch *esw, esw_debug(esw->dev, "Destroy vport[%d] E-Switch egress ACL\n", vport->vport); + esw_vport_cleanup_egress_rules(esw, vport); mlx5_destroy_flow_group(vport->egress.allowed_vlans_grp); mlx5_destroy_flow_group(vport->egress.drop_grp); mlx5_destroy_flow_table(vport->egress.acl); @@ -932,6 +946,14 @@ out: kfree(flow_group_in); } +static void esw_vport_cleanup_ingress_rules(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + if (!IS_ERR_OR_NULL(vport->ingress.drop_rule)) + mlx5_del_flow_rule(vport->ingress.drop_rule); + vport->ingress.drop_rule = NULL; +} + static void esw_vport_disable_ingress_acl(struct mlx5_eswitch *esw, struct mlx5_vport *vport) { @@ -940,6 +962,7 @@ static void esw_vport_disable_ingress_acl(struct mlx5_eswitch *esw, esw_debug(esw->dev, "Destroy vport[%d] E-Switch ingress ACL\n", vport->vport); + esw_vport_cleanup_ingress_rules(esw, vport); mlx5_destroy_flow_group(vport->ingress.allow_spoofchk_only_grp); mlx5_destroy_flow_group(vport->ingress.allow_untagged_only_grp); mlx5_destroy_flow_group(vport->ingress.allow_untagged_spoofchk_grp); @@ -952,11 +975,139 @@ static void esw_vport_disable_ingress_acl(struct mlx5_eswitch *esw, vport->ingress.allow_untagged_spoofchk_grp = NULL; } +static int esw_vport_ingress_config(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + u32 *match_v; + u32 *match_c; + int err = 0; + + if (IS_ERR_OR_NULL(vport->ingress.acl)) { + esw_warn(esw->dev, + "vport[%d] configure ingress rules failed, ingress acl is not initialized!\n", + vport->vport); + return -EPERM; + } + + esw_vport_cleanup_ingress_rules(esw, vport); + + if (!vport->vlan && !vport->qos) + return 0; + + esw_debug(esw->dev, + "vport[%d] configure ingress rules, vlan(%d) qos(%d)\n", + vport->vport, vport->vlan, vport->qos); + + match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL); + match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL); + if (!match_v || !match_c) { + err = -ENOMEM; + esw_warn(esw->dev, "vport[%d] configure ingress rules failed, err(%d)\n", + vport->vport, err); + goto out; + } + MLX5_SET_TO_ONES(fte_match_param, match_c, outer_headers.vlan_tag); + MLX5_SET_TO_ONES(fte_match_param, match_v, outer_headers.vlan_tag); + + vport->ingress.drop_rule = + mlx5_add_flow_rule(vport->ingress.acl, + MLX5_MATCH_OUTER_HEADERS, + match_c, + match_v, + MLX5_FLOW_CONTEXT_ACTION_DROP, + 0, NULL); + if (IS_ERR_OR_NULL(vport->ingress.drop_rule)) { + err = PTR_ERR(vport->ingress.drop_rule); + pr_warn("vport[%d] configure ingress rules, err(%d)\n", + vport->vport, err); + vport->ingress.drop_rule = NULL; + } +out: + kfree(match_v); + kfree(match_c); + return err; +} + +static int esw_vport_egress_config(struct mlx5_eswitch *esw, + struct mlx5_vport *vport) +{ + u32 *match_v; + u32 *match_c; + int err = 0; + + if (IS_ERR_OR_NULL(vport->egress.acl)) { + esw_warn(esw->dev, "vport[%d] configure rgress rules failed, egress acl is not initialized!\n", + vport->vport); + return -EPERM; + } + + esw_vport_cleanup_egress_rules(esw, vport); + + if (!vport->vlan && !vport->qos) + return 0; + + esw_debug(esw->dev, + "vport[%d] configure egress rules, vlan(%d) qos(%d)\n", + vport->vport, vport->vlan, vport->qos); + + match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL); + match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL); + if (!match_v || !match_c) { + err = -ENOMEM; + esw_warn(esw->dev, "vport[%d] configure egress rules failed, err(%d)\n", + vport->vport, err); + goto out; + } + + /* Allowed vlan rule */ + MLX5_SET_TO_ONES(fte_match_param, match_c, outer_headers.vlan_tag); + MLX5_SET_TO_ONES(fte_match_param, match_v, outer_headers.vlan_tag); + MLX5_SET_TO_ONES(fte_match_param, match_c, outer_headers.first_vid); + MLX5_SET(fte_match_param, match_v, outer_headers.first_vid, vport->vlan); + + vport->egress.allowed_vlan = + mlx5_add_flow_rule(vport->egress.acl, + MLX5_MATCH_OUTER_HEADERS, + match_c, + match_v, + MLX5_FLOW_CONTEXT_ACTION_ALLOW, + 0, NULL); + if (IS_ERR_OR_NULL(vport->egress.allowed_vlan)) { + err = PTR_ERR(vport->egress.allowed_vlan); + pr_warn("vport[%d] configure egress allowed vlan rule failed, err(%d)\n", + vport->vport, err); + vport->egress.allowed_vlan = NULL; + goto out; + } + + /* Drop others rule (star rule) */ + memset(match_c, 0, MLX5_ST_SZ_BYTES(fte_match_param)); + memset(match_v, 0, MLX5_ST_SZ_BYTES(fte_match_param)); + vport->egress.drop_rule = + mlx5_add_flow_rule(vport->egress.acl, + 0, + match_c, + match_v, + MLX5_FLOW_CONTEXT_ACTION_DROP, + 0, NULL); + if (IS_ERR_OR_NULL(vport->egress.drop_rule)) { + err = PTR_ERR(vport->egress.drop_rule); + pr_warn("vport[%d] configure egress drop rule failed, err(%d)\n", + vport->vport, err); + vport->egress.drop_rule = NULL; + } +out: + kfree(match_v); + kfree(match_c); + return err; +} + static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num, int enable_events) { struct mlx5_vport *vport = &esw->vports[vport_num]; + mutex_lock(&esw->state_lock); WARN_ON(vport->enabled); esw_debug(esw->dev, "Enabling VPORT(%d)\n", vport_num); @@ -964,6 +1115,8 @@ static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num, if (vport_num) { /* Only VFs need ACLs for VST and spoofchk filtering */ esw_vport_enable_ingress_acl(esw, vport); esw_vport_enable_egress_acl(esw, vport); + esw_vport_ingress_config(esw, vport); + esw_vport_egress_config(esw, vport); } mlx5_modify_vport_admin_state(esw->dev, @@ -981,6 +1134,7 @@ static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num, esw->enabled_vports++; esw_debug(esw->dev, "Enabled VPORT(%d)\n", vport_num); + mutex_unlock(&esw->state_lock); } static void esw_cleanup_vport(struct mlx5_eswitch *esw, u16 vport_num) @@ -1026,6 +1180,7 @@ static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num) flush_workqueue(esw->work_queue); /* Disable events from this vport */ arm_vport_context_events_cmd(esw->dev, vport->vport, 0); + mutex_lock(&esw->state_lock); /* We don't assume VFs will cleanup after themselves */ esw_cleanup_vport(esw, vport_num); if (vport_num) { @@ -1033,6 +1188,7 @@ static void esw_disable_vport(struct mlx5_eswitch *esw, int vport_num) esw_vport_disable_ingress_acl(esw, vport); } esw->enabled_vports--; + mutex_unlock(&esw->state_lock); } /* Public E-Switch API */ @@ -1142,6 +1298,8 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev) goto abort; } + mutex_init(&esw->state_lock); + for (vport_num = 0; vport_num < total_vports; vport_num++) { struct mlx5_vport *vport = &esw->vports[vport_num]; @@ -1268,6 +1426,8 @@ int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw, int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw, int vport, u16 vlan, u8 qos) { + struct mlx5_vport *evport; + int err = 0; int set = 0; if (!ESW_ALLOWED(esw)) @@ -1278,7 +1438,25 @@ int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw, if (vlan || qos) set = 1; - return modify_esw_vport_cvlan(esw->dev, vport, vlan, qos, set); + evport = &esw->vports[vport]; + + err = modify_esw_vport_cvlan(esw->dev, vport, vlan, qos, set); + if (err) + return err; + + mutex_lock(&esw->state_lock); + evport->vlan = vlan; + evport->qos = qos; + if (evport->enabled) { + err = esw_vport_ingress_config(esw, evport); + if (err) + goto out; + err = esw_vport_egress_config(esw, evport); + } + +out: + mutex_unlock(&esw->state_lock); + return err; } int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index e6972074c3f7..30d55ace4786 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -94,13 +94,16 @@ struct vport_ingress { struct mlx5_flow_group *allow_spoofchk_only_grp; struct mlx5_flow_group *allow_untagged_only_grp; struct mlx5_flow_group *drop_grp; - + struct mlx5_flow_rule *allow_rule; + struct mlx5_flow_rule *drop_rule; }; struct vport_egress { struct mlx5_flow_table *acl; struct mlx5_flow_group *allowed_vlans_grp; struct mlx5_flow_group *drop_grp; + struct mlx5_flow_rule *allowed_vlan; + struct mlx5_flow_rule *drop_rule; }; struct mlx5_vport { @@ -113,6 +116,8 @@ struct mlx5_vport { struct vport_ingress ingress; struct vport_egress egress; + u16 vlan; + u8 qos; bool enabled; u16 enabled_events; }; @@ -137,6 +142,10 @@ struct mlx5_eswitch { struct mlx5_vport *vports; int total_vports; int enabled_vports; + /* Synchronize between vport change events + * and async SRIOV admin state changes + */ + struct mutex state_lock; }; /* E-Switch API */ -- 2.30.2