From patchwork Sat Feb 16 01:34:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saeed Mahameed X-Patchwork-Id: 1043352 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 441Xkz4vxBz9s1l for ; Sat, 16 Feb 2019 12:35:39 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733268AbfBPBfi (ORCPT ); Fri, 15 Feb 2019 20:35:38 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:46597 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729746AbfBPBfi (ORCPT ); Fri, 15 Feb 2019 20:35:38 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from saeedm@mellanox.com) with ESMTPS (AES256-SHA encrypted); 16 Feb 2019 03:35:31 +0200 Received: from sx1.mtl.com ([172.16.5.60]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x1G1Z4Hs028267; Sat, 16 Feb 2019 03:35:29 +0200 From: Saeed Mahameed To: "David S. Miller" Cc: netdev@vger.kernel.org, Bodong Wang , Eli Cohen , Or Gerlitz , Saeed Mahameed Subject: [net-next 10/13] net/mlx5: E-Switch, Assign a different position for uplink rep and vport Date: Fri, 15 Feb 2019 17:34:49 -0800 Message-Id: <20190216013452.21131-11-saeedm@mellanox.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190216013452.21131-1-saeedm@mellanox.com> References: <20190216013452.21131-1-saeedm@mellanox.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bodong Wang In offloads mode, the current implementation puts the uplink representor at index zero of the vport reps array. It is not "natural" to place it at index 0 since we want to put the representor for vport 0 at index 0 with the introduction of SmartNIC. A separate patch will handle the case whether a rep is needed for vport 0 (PF vport). So, we want to have a different placeholder for uplink vport and representor. It was placed at the end of vport and rep array. Since vport number can no longer act as an index into the vport or representors arrays, use functions to map vport numbers to indices when accessing the vports or representors arrays, and vice versa. Signed-off-by: Bodong Wang Signed-off-by: Eli Cohen Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- .../net/ethernet/mellanox/mlx5/core/eswitch.c | 11 +++++---- .../net/ethernet/mellanox/mlx5/core/eswitch.h | 24 +++++++++++++++++++ .../mellanox/mlx5/core/eswitch_offloads.c | 11 ++------- include/linux/mlx5/vport.h | 11 ++++++--- 4 files changed, 40 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c index d1454f18c0a7..bb7f72467df9 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c @@ -84,8 +84,10 @@ enum { static struct mlx5_vport *mlx5_eswitch_get_vport(struct mlx5_eswitch *esw, u16 vport_num) { + u16 idx = mlx5_eswitch_vport_num_to_index(esw, vport_num); + WARN_ON(vport_num > esw->total_vports - 1); - return &esw->vports[vport_num]; + return &esw->vports[idx]; } static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport, @@ -1756,8 +1758,7 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev) int total_vports = MLX5_TOTAL_VPORTS(dev); struct mlx5_eswitch *esw; struct mlx5_vport *vport; - int vport_num; - int err; + int err, i; if (!MLX5_VPORT_MANAGER(dev)) return 0; @@ -1798,8 +1799,8 @@ int mlx5_eswitch_init(struct mlx5_core_dev *dev) hash_init(esw->offloads.mod_hdr_tbl); mutex_init(&esw->state_lock); - mlx5_esw_for_all_vports(esw, vport_num, vport) { - vport->vport = vport_num; + mlx5_esw_for_all_vports(esw, i, vport) { + vport->vport = mlx5_eswitch_index_to_vport_num(esw, i); vport->info.link_state = MLX5_VPORT_ADMIN_STATE_AUTO; vport->dev = dev; INIT_WORK(&vport->vport_change_handler, diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h index fd845e6c44d5..2951c1296c3e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h @@ -374,6 +374,30 @@ static inline u16 mlx5_eswitch_manager_vport(struct mlx5_core_dev *dev) MLX5_VPORT_ECPF : MLX5_VPORT_PF; } +static inline int mlx5_eswitch_uplink_idx(struct mlx5_eswitch *esw) +{ + /* Uplink always locate at the last element of the array.*/ + return esw->total_vports - 1; +} + +static inline int mlx5_eswitch_vport_num_to_index(struct mlx5_eswitch *esw, + u16 vport_num) +{ + if (vport_num == MLX5_VPORT_UPLINK) + return mlx5_eswitch_uplink_idx(esw); + + return vport_num; +} + +static inline int mlx5_eswitch_index_to_vport_num(struct mlx5_eswitch *esw, + int index) +{ + if (index == mlx5_eswitch_uplink_idx(esw)) + return MLX5_VPORT_UPLINK; + + return index; +} + #else /* CONFIG_MLX5_ESWITCH */ /* eswitch API stubs */ static inline int mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index b702b56c457e..e787e9212174 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -85,10 +85,7 @@ enum { static struct mlx5_eswitch_rep *mlx5_eswitch_get_rep(struct mlx5_eswitch *esw, u16 vport_num) { - u16 idx = vport_num; - - if (vport_num == MLX5_VPORT_UPLINK) - idx = UPLINK_REP_INDEX; + u16 idx = mlx5_eswitch_vport_num_to_index(esw, vport_num); WARN_ON(idx > esw->total_vports - 1); return &esw->offloads.vport_reps[idx]; @@ -1254,7 +1251,6 @@ int esw_offloads_init_reps(struct mlx5_eswitch *esw) { int total_vfs = MLX5_TOTAL_VPORTS(esw->dev); struct mlx5_core_dev *dev = esw->dev; - struct mlx5_esw_offload *offloads; struct mlx5_eswitch_rep *rep; u8 hw_id[ETH_ALEN], rep_type; int vport; @@ -1265,19 +1261,16 @@ int esw_offloads_init_reps(struct mlx5_eswitch *esw) if (!esw->offloads.vport_reps) return -ENOMEM; - offloads = &esw->offloads; mlx5_query_nic_vport_mac_address(dev, 0, hw_id); mlx5_esw_for_all_reps(esw, vport, rep) { - rep->vport = vport; + rep->vport = mlx5_eswitch_index_to_vport_num(esw, vport); ether_addr_copy(rep->hw_id, hw_id); for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++) rep->rep_if[rep_type].state = REP_UNREGISTERED; } - offloads->vport_reps[0].vport = MLX5_VPORT_UPLINK; - return 0; } diff --git a/include/linux/mlx5/vport.h b/include/linux/mlx5/vport.h index 755aeea19e1c..134248c02786 100644 --- a/include/linux/mlx5/vport.h +++ b/include/linux/mlx5/vport.h @@ -36,9 +36,14 @@ #include #include -#define MLX5_VPORT_PF_PLACEHOLDER (1u) -#define MLX5_SPECIAL_VPORTS (MLX5_VPORT_PF_PLACEHOLDER) -#define MLX5_TOTAL_VPORTS(mdev) (MLX5_SPECIAL_VPORTS + mlx5_core_max_vfs(mdev)) +#define MLX5_VPORT_PF_PLACEHOLDER (1u) +#define MLX5_VPORT_UPLINK_PLACEHOLDER (1u) + +#define MLX5_SPECIAL_VPORTS (MLX5_VPORT_PF_PLACEHOLDER + \ + MLX5_VPORT_UPLINK_PLACEHOLDER) + +#define MLX5_TOTAL_VPORTS(mdev) (MLX5_SPECIAL_VPORTS + \ + mlx5_core_max_vfs(mdev)) #define MLX5_VPORT_MANAGER(mdev) \ (MLX5_CAP_GEN(mdev, vport_group_manager) && \