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Miller" , Jakub Kicinski , Jiri Pirko , Ido Schimmel , Andrew Lunn , Oleksandr Mazur , Serhiy Boiko , Serhiy Pshyk , Volodymyr Mytnyk , Taras Chornyi , Andrii Savka , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andy Shevchenko , Mickey Rachamim , Vadym Kochan Subject: [net-next v8 5/6] net: marvell: prestera: Add Switchdev driver implementation Date: Thu, 10 Sep 2020 18:00:54 +0300 Message-Id: <20200910150055.15598-6-vadym.kochan@plvision.eu> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200910150055.15598-1-vadym.kochan@plvision.eu> References: <20200910150055.15598-1-vadym.kochan@plvision.eu> X-ClientProxiedBy: BE0P281CA0009.DEUP281.PROD.OUTLOOK.COM (2603:10a6:b10:a::19) To HE1P190MB0539.EURP190.PROD.OUTLOOK.COM (2603:10a6:7:56::28) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc60716vkochan.x.ow.s (217.20.186.93) by BE0P281CA0009.DEUP281.PROD.OUTLOOK.COM (2603:10a6:b10:a::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3370.10 via Frontend Transport; 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CAT:NONE; SFS:(136003)(39830400003)(396003)(346002)(366004)(376002)(26005)(2906002)(8936002)(110136005)(186003)(16526019)(8676002)(2616005)(83380400001)(44832011)(4326008)(66556008)(66946007)(54906003)(66476007)(30864003)(1076003)(6506007)(5660300002)(6666004)(107886003)(956004)(6486002)(478600001)(86362001)(316002)(6512007)(36756003)(52116002)(333604002)(921003)(579004)(559001); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: plvision.eu X-MS-Exchange-CrossTenant-Network-Message-Id: f77970b0-f303-47e5-a04f-08d8559a6296 X-MS-Exchange-CrossTenant-AuthSource: HE1P190MB0539.EURP190.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Sep 2020 15:01:24.3146 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 03707b74-30f3-46b6-a0e0-ff0a7438c9c4 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 4QacNJZnbdcveGnd9HSjQWqMb0/gXGy8CQc4T5g8Rpjk7iZS8DjsR1aAu7jA86yvodGmvExX3mZR5z9FhhhYHyPmroh11DEn/8gpult23dM= X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1P190MB0459 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The following features are supported: - VLAN-aware bridge offloading - VLAN-unaware bridge offloading - FDB offloading (learning, ageing) - Switchport configuration Currently there are some limitations like: - Only 1 VLAN-aware bridge instance supported - FDB ageing timeout parameter is set globally per device Co-developed-by: Serhiy Boiko Signed-off-by: Serhiy Boiko Co-developed-by: Serhiy Pshyk Signed-off-by: Serhiy Pshyk Co-developed-by: Taras Chornyi Signed-off-by: Taras Chornyi Signed-off-by: Vadym Kochan --- PATCH v8: 1) Add missing comma for last enum member. 2) Add _ms suffix for ageing variable and struct member. 3) Add comma for last member in initialized struct in prestera_hw.c 4) Use ether_addr_copy() instead of memcpy() for mac FDB copying in prestera_hw.c 5) Sorted includes. 6) Fix ageing macro to be in ms instead of seconds. 7) Do not intialize 'err' where it is not needed. 8) Drop swdev->ageing_time member which is not used. 9) Simplify prestera_port_attr_br_ageing_set() by simply return prestera_hw_switch_ageing_set(sw, ageing_time_ms), and remove err handling. 10) Put license in one line. PATCH v7: 1) Add missing destroy_workqueue(swdev_wq) in prestera_switchdev.c:prestera_switchdev_init() on error path handling. PATCH v5: 0) Add Co-developed tag. 1) Remove "," from terminated enum entry. 2) Replace 'u8 *' -> 'void *' in prestera_fw_parse_fdb_evt(...) 3) Use ether_addr_copy() in prestera_fw_parse_fdb_evt(...) PATCH v4: 1) Check for the prestera dev interface in switchdev event handler to ignore unsupported topology. .../net/ethernet/marvell/prestera/Makefile | 3 +- .../net/ethernet/marvell/prestera/prestera.h | 31 + .../ethernet/marvell/prestera/prestera_hw.c | 329 +++++ .../ethernet/marvell/prestera/prestera_hw.h | 48 + .../ethernet/marvell/prestera/prestera_main.c | 110 +- .../marvell/prestera/prestera_switchdev.c | 1277 +++++++++++++++++ .../marvell/prestera/prestera_switchdev.h | 13 + 7 files changed, 1807 insertions(+), 4 deletions(-) create mode 100644 drivers/net/ethernet/marvell/prestera/prestera_switchdev.c create mode 100644 drivers/net/ethernet/marvell/prestera/prestera_switchdev.h diff --git a/drivers/net/ethernet/marvell/prestera/Makefile b/drivers/net/ethernet/marvell/prestera/Makefile index 7684e7047562..93129e32ebc5 100644 --- a/drivers/net/ethernet/marvell/prestera/Makefile +++ b/drivers/net/ethernet/marvell/prestera/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PRESTERA) += prestera.o prestera-objs := prestera_main.o prestera_hw.o prestera_dsa.o \ - prestera_rxtx.o prestera_devlink.o prestera_ethtool.o + prestera_rxtx.o prestera_devlink.o prestera_ethtool.o \ + prestera_switchdev.o obj-$(CONFIG_PRESTERA_PCI) += prestera_pci.o diff --git a/drivers/net/ethernet/marvell/prestera/prestera.h b/drivers/net/ethernet/marvell/prestera/prestera.h index 69628632e2bd..55aa4bf8a27c 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera.h +++ b/drivers/net/ethernet/marvell/prestera/prestera.h @@ -12,6 +12,8 @@ #define PRESTERA_DRV_NAME "prestera" +#define PRESTERA_DEFAULT_VID 1 + struct prestera_fw_rev { u16 maj; u16 min; @@ -66,11 +68,13 @@ struct prestera_port { u32 hw_id; u32 dev_id; u16 fp_id; + u16 pvid; bool autoneg; u64 adver_link_modes; u8 adver_fec; struct prestera_port_caps caps; struct list_head list; + struct list_head vlans_list; struct { struct prestera_port_stats stats; struct delayed_work caching_dw; @@ -100,6 +104,7 @@ enum prestera_event_type { PRESTERA_EVENT_TYPE_UNSPEC, PRESTERA_EVENT_TYPE_PORT, + PRESTERA_EVENT_TYPE_FDB, PRESTERA_EVENT_TYPE_RXTX, PRESTERA_EVENT_TYPE_MAX @@ -122,19 +127,37 @@ struct prestera_port_event { } data; }; +enum prestera_fdb_event_id { + PRESTERA_FDB_EVENT_UNSPEC, + PRESTERA_FDB_EVENT_LEARNED, + PRESTERA_FDB_EVENT_AGED, +}; + +struct prestera_fdb_event { + u32 port_id; + u32 vid; + union { + u8 mac[ETH_ALEN]; + } data; +}; + struct prestera_event { u16 id; union { struct prestera_port_event port_evt; + struct prestera_fdb_event fdb_evt; }; }; +struct prestera_switchdev; struct prestera_rxtx; struct prestera_switch { struct prestera_device *dev; + struct prestera_switchdev *swdev; struct prestera_rxtx *rxtx; struct list_head event_handlers; + struct notifier_block netdev_nb; char base_mac[ETH_ALEN]; struct list_head port_list; rwlock_t port_list_lock; @@ -172,4 +195,12 @@ struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw, int prestera_port_autoneg_set(struct prestera_port *port, bool enable, u64 adver_link_modes, u8 adver_fec); +struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id); + +struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev); + +int prestera_port_pvid_set(struct prestera_port *port, u16 vid); + +bool prestera_netdev_check(const struct net_device *dev); + #endif /* _PRESTERA_H_ */ diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c index 4400bc16944e..f0bb245a8c03 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c @@ -20,9 +20,27 @@ enum prestera_cmd_type_t { PRESTERA_CMD_TYPE_PORT_ATTR_GET = 0x101, PRESTERA_CMD_TYPE_PORT_INFO_GET = 0x110, + PRESTERA_CMD_TYPE_VLAN_CREATE = 0x200, + PRESTERA_CMD_TYPE_VLAN_DELETE = 0x201, + PRESTERA_CMD_TYPE_VLAN_PORT_SET = 0x202, + PRESTERA_CMD_TYPE_VLAN_PVID_SET = 0x203, + + PRESTERA_CMD_TYPE_FDB_ADD = 0x300, + PRESTERA_CMD_TYPE_FDB_DELETE = 0x301, + PRESTERA_CMD_TYPE_FDB_FLUSH_PORT = 0x310, + PRESTERA_CMD_TYPE_FDB_FLUSH_VLAN = 0x311, + PRESTERA_CMD_TYPE_FDB_FLUSH_PORT_VLAN = 0x312, + + PRESTERA_CMD_TYPE_BRIDGE_CREATE = 0x400, + PRESTERA_CMD_TYPE_BRIDGE_DELETE = 0x401, + PRESTERA_CMD_TYPE_BRIDGE_PORT_ADD = 0x402, + PRESTERA_CMD_TYPE_BRIDGE_PORT_DELETE = 0x403, + PRESTERA_CMD_TYPE_RXTX_INIT = 0x800, PRESTERA_CMD_TYPE_RXTX_PORT_INIT = 0x801, + PRESTERA_CMD_TYPE_STP_PORT_SET = 0x1000, + PRESTERA_CMD_TYPE_ACK = 0x10000, PRESTERA_CMD_TYPE_MAX }; @@ -32,6 +50,9 @@ enum { PRESTERA_CMD_PORT_ATTR_MTU = 3, PRESTERA_CMD_PORT_ATTR_MAC = 4, PRESTERA_CMD_PORT_ATTR_SPEED = 5, + PRESTERA_CMD_PORT_ATTR_ACCEPT_FRAME_TYPE = 6, + PRESTERA_CMD_PORT_ATTR_LEARNING = 7, + PRESTERA_CMD_PORT_ATTR_FLOOD = 8, PRESTERA_CMD_PORT_ATTR_CAPABILITY = 9, PRESTERA_CMD_PORT_ATTR_REMOTE_CAPABILITY = 10, PRESTERA_CMD_PORT_ATTR_REMOTE_FC = 11, @@ -47,6 +68,7 @@ enum { enum { PRESTERA_CMD_SWITCH_ATTR_MAC = 1, + PRESTERA_CMD_SWITCH_ATTR_AGEING = 2, }; enum { @@ -132,6 +154,7 @@ struct prestera_msg_common_resp { union prestera_msg_switch_param { u8 mac[ETH_ALEN]; + u32 ageing_timeout_ms; }; struct prestera_msg_switch_attr_req { @@ -170,7 +193,10 @@ union prestera_msg_port_param { u8 oper_state; u32 mtu; u8 mac[ETH_ALEN]; + u8 accept_frm_type; u32 speed; + u8 learning; + u8 flood; u32 link_mode; u8 type; u8 duplex; @@ -211,6 +237,46 @@ struct prestera_msg_port_info_resp { u16 fp_id; }; +struct prestera_msg_vlan_req { + struct prestera_msg_cmd cmd; + u32 port; + u32 dev; + u16 vid; + u8 is_member; + u8 is_tagged; +}; + +struct prestera_msg_fdb_req { + struct prestera_msg_cmd cmd; + u8 dest_type; + u32 port; + u32 dev; + u8 mac[ETH_ALEN]; + u16 vid; + u8 dynamic; + u32 flush_mode; +}; + +struct prestera_msg_bridge_req { + struct prestera_msg_cmd cmd; + u32 port; + u32 dev; + u16 bridge; +}; + +struct prestera_msg_bridge_resp { + struct prestera_msg_ret ret; + u16 bridge; +}; + +struct prestera_msg_stp_req { + struct prestera_msg_cmd cmd; + u32 port; + u32 dev; + u16 vid; + u8 state; +}; + struct prestera_msg_rxtx_req { struct prestera_msg_cmd cmd; u8 use_sdma; @@ -242,6 +308,18 @@ struct prestera_msg_event_port { union prestera_msg_event_port_param param; }; +union prestera_msg_event_fdb_param { + u8 mac[ETH_ALEN]; +}; + +struct prestera_msg_event_fdb { + struct prestera_msg_event id; + u8 dest_type; + u32 port_id; + u32 vid; + union prestera_msg_event_fdb_param param; +}; + static int __prestera_cmd_ret(struct prestera_switch *sw, enum prestera_cmd_type_t type, struct prestera_msg_cmd *cmd, size_t clen, @@ -304,10 +382,23 @@ static int prestera_fw_parse_port_evt(void *msg, struct prestera_event *evt) return 0; } +static int prestera_fw_parse_fdb_evt(void *msg, struct prestera_event *evt) +{ + struct prestera_msg_event_fdb *hw_evt = msg; + + evt->fdb_evt.port_id = hw_evt->port_id; + evt->fdb_evt.vid = hw_evt->vid; + + ether_addr_copy(evt->fdb_evt.data.mac, hw_evt->param.mac); + + return 0; +} + static struct prestera_fw_evt_parser { int (*func)(void *msg, struct prestera_event *evt); } fw_event_parsers[PRESTERA_EVENT_TYPE_MAX] = { [PRESTERA_EVENT_TYPE_PORT] = { .func = prestera_fw_parse_port_evt }, + [PRESTERA_EVENT_TYPE_FDB] = { .func = prestera_fw_parse_fdb_evt }, }; static struct prestera_fw_event_handler * @@ -449,6 +540,19 @@ void prestera_hw_switch_fini(struct prestera_switch *sw) WARN_ON(!list_empty(&sw->event_handlers)); } +int prestera_hw_switch_ageing_set(struct prestera_switch *sw, u32 ageing_ms) +{ + struct prestera_msg_switch_attr_req req = { + .attr = PRESTERA_CMD_SWITCH_ATTR_AGEING, + .param = { + .ageing_timeout_ms = ageing_ms, + }, + }; + + return prestera_cmd(sw, PRESTERA_CMD_TYPE_SWITCH_ATTR_SET, + &req.cmd, sizeof(req)); +} + int prestera_hw_port_state_set(const struct prestera_port *port, bool admin_state) { @@ -494,6 +598,22 @@ int prestera_hw_port_mac_set(const struct prestera_port *port, const char *mac) &req.cmd, sizeof(req)); } +int prestera_hw_port_accept_frm_type(struct prestera_port *port, + enum prestera_accept_frm_type type) +{ + struct prestera_msg_port_attr_req req = { + .attr = PRESTERA_CMD_PORT_ATTR_ACCEPT_FRAME_TYPE, + .port = port->hw_id, + .dev = port->dev_id, + .param = { + .accept_frm_type = type, + } + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET, + &req.cmd, sizeof(req)); +} + int prestera_hw_port_cap_get(const struct prestera_port *port, struct prestera_port_caps *caps) { @@ -853,6 +973,215 @@ int prestera_hw_port_stats_get(const struct prestera_port *port, return 0; } +int prestera_hw_port_learning_set(struct prestera_port *port, bool enable) +{ + struct prestera_msg_port_attr_req req = { + .attr = PRESTERA_CMD_PORT_ATTR_LEARNING, + .port = port->hw_id, + .dev = port->dev_id, + .param = { + .learning = enable, + } + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET, + &req.cmd, sizeof(req)); +} + +int prestera_hw_port_flood_set(struct prestera_port *port, bool flood) +{ + struct prestera_msg_port_attr_req req = { + .attr = PRESTERA_CMD_PORT_ATTR_FLOOD, + .port = port->hw_id, + .dev = port->dev_id, + .param = { + .flood = flood, + } + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET, + &req.cmd, sizeof(req)); +} + +int prestera_hw_vlan_create(struct prestera_switch *sw, u16 vid) +{ + struct prestera_msg_vlan_req req = { + .vid = vid, + }; + + return prestera_cmd(sw, PRESTERA_CMD_TYPE_VLAN_CREATE, + &req.cmd, sizeof(req)); +} + +int prestera_hw_vlan_delete(struct prestera_switch *sw, u16 vid) +{ + struct prestera_msg_vlan_req req = { + .vid = vid, + }; + + return prestera_cmd(sw, PRESTERA_CMD_TYPE_VLAN_DELETE, + &req.cmd, sizeof(req)); +} + +int prestera_hw_vlan_port_set(struct prestera_port *port, u16 vid, + bool is_member, bool untagged) +{ + struct prestera_msg_vlan_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .vid = vid, + .is_member = is_member, + .is_tagged = !untagged, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_VLAN_PORT_SET, + &req.cmd, sizeof(req)); +} + +int prestera_hw_vlan_port_vid_set(struct prestera_port *port, u16 vid) +{ + struct prestera_msg_vlan_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .vid = vid, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_VLAN_PVID_SET, + &req.cmd, sizeof(req)); +} + +int prestera_hw_vlan_port_stp_set(struct prestera_port *port, u16 vid, u8 state) +{ + struct prestera_msg_stp_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .vid = vid, + .state = state, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_STP_PORT_SET, + &req.cmd, sizeof(req)); +} + +int prestera_hw_fdb_add(struct prestera_port *port, const unsigned char *mac, + u16 vid, bool dynamic) +{ + struct prestera_msg_fdb_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .vid = vid, + .dynamic = dynamic, + }; + + ether_addr_copy(req.mac, mac); + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_ADD, + &req.cmd, sizeof(req)); +} + +int prestera_hw_fdb_del(struct prestera_port *port, const unsigned char *mac, + u16 vid) +{ + struct prestera_msg_fdb_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .vid = vid, + }; + + ether_addr_copy(req.mac, mac); + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_DELETE, + &req.cmd, sizeof(req)); +} + +int prestera_hw_fdb_flush_port(struct prestera_port *port, u32 mode) +{ + struct prestera_msg_fdb_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .flush_mode = mode, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_FLUSH_PORT, + &req.cmd, sizeof(req)); +} + +int prestera_hw_fdb_flush_vlan(struct prestera_switch *sw, u16 vid, u32 mode) +{ + struct prestera_msg_fdb_req req = { + .vid = vid, + .flush_mode = mode, + }; + + return prestera_cmd(sw, PRESTERA_CMD_TYPE_FDB_FLUSH_VLAN, + &req.cmd, sizeof(req)); +} + +int prestera_hw_fdb_flush_port_vlan(struct prestera_port *port, u16 vid, + u32 mode) +{ + struct prestera_msg_fdb_req req = { + .port = port->hw_id, + .dev = port->dev_id, + .vid = vid, + .flush_mode = mode, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_FDB_FLUSH_PORT_VLAN, + &req.cmd, sizeof(req)); +} + +int prestera_hw_bridge_create(struct prestera_switch *sw, u16 *bridge_id) +{ + struct prestera_msg_bridge_resp resp; + struct prestera_msg_bridge_req req; + int err; + + err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_BRIDGE_CREATE, + &req.cmd, sizeof(req), + &resp.ret, sizeof(resp)); + if (err) + return err; + + *bridge_id = resp.bridge; + + return 0; +} + +int prestera_hw_bridge_delete(struct prestera_switch *sw, u16 bridge_id) +{ + struct prestera_msg_bridge_req req = { + .bridge = bridge_id, + }; + + return prestera_cmd(sw, PRESTERA_CMD_TYPE_BRIDGE_DELETE, + &req.cmd, sizeof(req)); +} + +int prestera_hw_bridge_port_add(struct prestera_port *port, u16 bridge_id) +{ + struct prestera_msg_bridge_req req = { + .bridge = bridge_id, + .port = port->hw_id, + .dev = port->dev_id, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_BRIDGE_PORT_ADD, + &req.cmd, sizeof(req)); +} + +int prestera_hw_bridge_port_delete(struct prestera_port *port, u16 bridge_id) +{ + struct prestera_msg_bridge_req req = { + .bridge = bridge_id, + .port = port->hw_id, + .dev = port->dev_id, + }; + + return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_BRIDGE_PORT_DELETE, + &req.cmd, sizeof(req)); +} + int prestera_hw_rxtx_init(struct prestera_switch *sw, struct prestera_rxtx_params *params) { diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.h b/drivers/net/ethernet/marvell/prestera/prestera_hw.h index 203c0daa4af1..b2b5ac95b4e3 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_hw.h +++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.h @@ -6,6 +6,19 @@ #include +enum prestera_accept_frm_type { + PRESTERA_ACCEPT_FRAME_TYPE_TAGGED, + PRESTERA_ACCEPT_FRAME_TYPE_UNTAGGED, + PRESTERA_ACCEPT_FRAME_TYPE_ALL, +}; + +enum prestera_fdb_flush_mode { + PRESTERA_FDB_FLUSH_MODE_DYNAMIC = BIT(0), + PRESTERA_FDB_FLUSH_MODE_STATIC = BIT(1), + PRESTERA_FDB_FLUSH_MODE_ALL = PRESTERA_FDB_FLUSH_MODE_DYNAMIC + | PRESTERA_FDB_FLUSH_MODE_STATIC, +}; + enum { PRESTERA_LINK_MODE_10baseT_Half, PRESTERA_LINK_MODE_10baseT_Full, @@ -69,6 +82,13 @@ enum { PRESTERA_PORT_DUPLEX_FULL, }; +enum { + PRESTERA_STP_DISABLED, + PRESTERA_STP_BLOCK_LISTEN, + PRESTERA_STP_LEARN, + PRESTERA_STP_FORWARD, +}; + struct prestera_switch; struct prestera_port; struct prestera_port_stats; @@ -84,6 +104,7 @@ struct prestera_rxtx_params; /* Switch API */ int prestera_hw_switch_init(struct prestera_switch *sw); void prestera_hw_switch_fini(struct prestera_switch *sw); +int prestera_hw_switch_ageing_set(struct prestera_switch *sw, u32 ageing_ms); int prestera_hw_switch_mac_set(struct prestera_switch *sw, const char *mac); /* Port API */ @@ -116,6 +137,33 @@ int prestera_hw_port_mdix_get(const struct prestera_port *port, u8 *status, u8 *admin_mode); int prestera_hw_port_mdix_set(const struct prestera_port *port, u8 mode); int prestera_hw_port_speed_get(const struct prestera_port *port, u32 *speed); +int prestera_hw_port_learning_set(struct prestera_port *port, bool enable); +int prestera_hw_port_flood_set(struct prestera_port *port, bool flood); +int prestera_hw_port_accept_frm_type(struct prestera_port *port, + enum prestera_accept_frm_type type); +/* Vlan API */ +int prestera_hw_vlan_create(struct prestera_switch *sw, u16 vid); +int prestera_hw_vlan_delete(struct prestera_switch *sw, u16 vid); +int prestera_hw_vlan_port_set(struct prestera_port *port, u16 vid, + bool is_member, bool untagged); +int prestera_hw_vlan_port_vid_set(struct prestera_port *port, u16 vid); +int prestera_hw_vlan_port_stp_set(struct prestera_port *port, u16 vid, u8 state); + +/* FDB API */ +int prestera_hw_fdb_add(struct prestera_port *port, const unsigned char *mac, + u16 vid, bool dynamic); +int prestera_hw_fdb_del(struct prestera_port *port, const unsigned char *mac, + u16 vid); +int prestera_hw_fdb_flush_port(struct prestera_port *port, u32 mode); +int prestera_hw_fdb_flush_vlan(struct prestera_switch *sw, u16 vid, u32 mode); +int prestera_hw_fdb_flush_port_vlan(struct prestera_port *port, u16 vid, + u32 mode); + +/* Bridge API */ +int prestera_hw_bridge_create(struct prestera_switch *sw, u16 *bridge_id); +int prestera_hw_bridge_delete(struct prestera_switch *sw, u16 bridge_id); +int prestera_hw_bridge_port_add(struct prestera_port *port, u16 bridge_id); +int prestera_hw_bridge_port_delete(struct prestera_port *port, u16 bridge_id); /* Event handlers */ int prestera_hw_event_handler_register(struct prestera_switch *sw, diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c index bb51ee5646cd..9bd57b89d1d0 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_main.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c @@ -14,6 +14,7 @@ #include "prestera_rxtx.h" #include "prestera_devlink.h" #include "prestera_ethtool.h" +#include "prestera_switchdev.h" #define PRESTERA_MTU_DEFAULT 1536 @@ -23,6 +24,29 @@ static struct workqueue_struct *prestera_wq; +int prestera_port_pvid_set(struct prestera_port *port, u16 vid) +{ + enum prestera_accept_frm_type frm_type; + int err; + + frm_type = PRESTERA_ACCEPT_FRAME_TYPE_TAGGED; + + if (vid) { + err = prestera_hw_vlan_port_vid_set(port, vid); + if (err) + return err; + + frm_type = PRESTERA_ACCEPT_FRAME_TYPE_ALL; + } + + err = prestera_hw_port_accept_frm_type(port, frm_type); + if (err && frm_type == PRESTERA_ACCEPT_FRAME_TYPE_ALL) + prestera_hw_vlan_port_vid_set(port, port->pvid); + + port->pvid = vid; + return 0; +} + struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw, u32 dev_id, u32 hw_id) { @@ -38,8 +62,7 @@ struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw, return port; } -static struct prestera_port *prestera_find_port(struct prestera_switch *sw, - u32 id) +struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id) { struct prestera_port *port = NULL; @@ -261,6 +284,8 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id) port = netdev_priv(dev); + INIT_LIST_HEAD(&port->vlans_list); + port->pvid = PRESTERA_DEFAULT_VID; port->dev = dev; port->id = id; port->sw = sw; @@ -452,6 +477,71 @@ static int prestera_switch_set_base_mac_addr(struct prestera_switch *sw) return prestera_hw_switch_mac_set(sw, sw->base_mac); } +bool prestera_netdev_check(const struct net_device *dev) +{ + return dev->netdev_ops == &prestera_netdev_ops; +} + +static int prestera_lower_dev_walk(struct net_device *dev, void *data) +{ + struct prestera_port **pport = data; + + if (prestera_netdev_check(dev)) { + *pport = netdev_priv(dev); + return 1; + } + + return 0; +} + +struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev) +{ + struct prestera_port *port = NULL; + + if (prestera_netdev_check(dev)) + return netdev_priv(dev); + + netdev_walk_all_lower_dev(dev, prestera_lower_dev_walk, &port); + + return port; +} + +static int prestera_netdev_port_event(struct net_device *dev, + unsigned long event, void *ptr) +{ + switch (event) { + case NETDEV_PRECHANGEUPPER: + case NETDEV_CHANGEUPPER: + return prestera_bridge_port_event(dev, event, ptr); + default: + return 0; + } +} + +static int prestera_netdev_event_handler(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + int err = 0; + + if (prestera_netdev_check(dev)) + err = prestera_netdev_port_event(dev, event, ptr); + + return notifier_from_errno(err); +} + +static int prestera_netdev_event_handler_register(struct prestera_switch *sw) +{ + sw->netdev_nb.notifier_call = prestera_netdev_event_handler; + + return register_netdevice_notifier(&sw->netdev_nb); +} + +static void prestera_netdev_event_handler_unregister(struct prestera_switch *sw) +{ + unregister_netdevice_notifier(&sw->netdev_nb); +} + static int prestera_switch_init(struct prestera_switch *sw) { int err; @@ -469,10 +559,18 @@ static int prestera_switch_init(struct prestera_switch *sw) if (err) return err; - err = prestera_rxtx_switch_init(sw); + err = prestera_netdev_event_handler_register(sw); if (err) return err; + err = prestera_switchdev_init(sw); + if (err) + goto err_swdev_register; + + err = prestera_rxtx_switch_init(sw); + if (err) + goto err_rxtx_register; + err = prestera_event_handlers_register(sw); if (err) goto err_handlers_register; @@ -493,6 +591,10 @@ static int prestera_switch_init(struct prestera_switch *sw) prestera_event_handlers_unregister(sw); err_handlers_register: prestera_rxtx_switch_fini(sw); +err_rxtx_register: + prestera_switchdev_fini(sw); +err_swdev_register: + prestera_netdev_event_handler_unregister(sw); prestera_hw_switch_fini(sw); return err; @@ -504,6 +606,8 @@ static void prestera_switch_fini(struct prestera_switch *sw) prestera_devlink_unregister(sw); prestera_event_handlers_unregister(sw); prestera_rxtx_switch_fini(sw); + prestera_switchdev_fini(sw); + prestera_netdev_event_handler_unregister(sw); prestera_hw_switch_fini(sw); } diff --git a/drivers/net/ethernet/marvell/prestera/prestera_switchdev.c b/drivers/net/ethernet/marvell/prestera/prestera_switchdev.c new file mode 100644 index 000000000000..7d83e1f91ef1 --- /dev/null +++ b/drivers/net/ethernet/marvell/prestera/prestera_switchdev.c @@ -0,0 +1,1277 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved */ + +#include +#include +#include +#include +#include +#include +#include + +#include "prestera.h" +#include "prestera_hw.h" +#include "prestera_switchdev.h" + +#define PRESTERA_VID_ALL (0xffff) + +#define PRESTERA_DEFAULT_AGEING_TIME_MS 300000 +#define PRESTERA_MAX_AGEING_TIME_MS 1000000000 +#define PRESTERA_MIN_AGEING_TIME_MS 32000 + +struct prestera_fdb_event_work { + struct work_struct work; + struct switchdev_notifier_fdb_info fdb_info; + struct net_device *dev; + unsigned long event; +}; + +struct prestera_switchdev { + struct prestera_switch *sw; + struct list_head bridge_list; + bool bridge_8021q_exists; + struct notifier_block swdev_nb_blk; + struct notifier_block swdev_nb; +}; + +struct prestera_bridge { + struct list_head head; + struct net_device *dev; + struct prestera_switchdev *swdev; + struct list_head port_list; + bool vlan_enabled; + u16 bridge_id; +}; + +struct prestera_bridge_port { + struct list_head head; + struct net_device *dev; + struct prestera_bridge *bridge; + struct list_head vlan_list; + refcount_t ref_count; + unsigned long flags; + u8 stp_state; +}; + +struct prestera_bridge_vlan { + struct list_head head; + struct list_head port_vlan_list; + u16 vid; +}; + +struct prestera_port_vlan { + struct list_head br_vlan_head; + struct list_head port_head; + struct prestera_port *port; + struct prestera_bridge_port *br_port; + u16 vid; +}; + +static struct workqueue_struct *swdev_wq; + +static void prestera_bridge_port_put(struct prestera_bridge_port *br_port); + +static int prestera_port_vid_stp_set(struct prestera_port *port, u16 vid, + u8 state); + +static struct prestera_bridge_vlan * +prestera_bridge_vlan_create(struct prestera_bridge_port *br_port, u16 vid) +{ + struct prestera_bridge_vlan *br_vlan; + + br_vlan = kzalloc(sizeof(*br_vlan), GFP_KERNEL); + if (!br_vlan) + return NULL; + + INIT_LIST_HEAD(&br_vlan->port_vlan_list); + br_vlan->vid = vid; + list_add(&br_vlan->head, &br_port->vlan_list); + + return br_vlan; +} + +static void prestera_bridge_vlan_destroy(struct prestera_bridge_vlan *br_vlan) +{ + list_del(&br_vlan->head); + WARN_ON(!list_empty(&br_vlan->port_vlan_list)); + kfree(br_vlan); +} + +static struct prestera_bridge_vlan * +prestera_bridge_vlan_by_vid(struct prestera_bridge_port *br_port, u16 vid) +{ + struct prestera_bridge_vlan *br_vlan; + + list_for_each_entry(br_vlan, &br_port->vlan_list, head) { + if (br_vlan->vid == vid) + return br_vlan; + } + + return NULL; +} + +static int prestera_bridge_vlan_port_count(struct prestera_bridge *bridge, + u16 vid) +{ + struct prestera_bridge_port *br_port; + struct prestera_bridge_vlan *br_vlan; + int count = 0; + + list_for_each_entry(br_port, &bridge->port_list, head) { + list_for_each_entry(br_vlan, &br_port->vlan_list, head) { + if (br_vlan->vid == vid) { + count += 1; + break; + } + } + } + + return count; +} + +static void prestera_bridge_vlan_put(struct prestera_bridge_vlan *br_vlan) +{ + if (list_empty(&br_vlan->port_vlan_list)) + prestera_bridge_vlan_destroy(br_vlan); +} + +static struct prestera_port_vlan * +prestera_port_vlan_by_vid(struct prestera_port *port, u16 vid) +{ + struct prestera_port_vlan *port_vlan; + + list_for_each_entry(port_vlan, &port->vlans_list, port_head) { + if (port_vlan->vid == vid) + return port_vlan; + } + + return NULL; +} + +static struct prestera_port_vlan * +prestera_port_vlan_create(struct prestera_port *port, u16 vid, bool untagged) +{ + struct prestera_port_vlan *port_vlan; + int err; + + port_vlan = prestera_port_vlan_by_vid(port, vid); + if (port_vlan) + return ERR_PTR(-EEXIST); + + err = prestera_hw_vlan_port_set(port, vid, true, untagged); + if (err) + return ERR_PTR(err); + + port_vlan = kzalloc(sizeof(*port_vlan), GFP_KERNEL); + if (!port_vlan) { + err = -ENOMEM; + goto err_port_vlan_alloc; + } + + port_vlan->port = port; + port_vlan->vid = vid; + + list_add(&port_vlan->port_head, &port->vlans_list); + + return port_vlan; + +err_port_vlan_alloc: + prestera_hw_vlan_port_set(port, vid, false, false); + return ERR_PTR(err); +} + +static void +prestera_port_vlan_bridge_leave(struct prestera_port_vlan *port_vlan) +{ + u32 fdb_flush_mode = PRESTERA_FDB_FLUSH_MODE_DYNAMIC; + struct prestera_port *port = port_vlan->port; + struct prestera_bridge_vlan *br_vlan; + struct prestera_bridge_port *br_port; + bool last_port, last_vlan; + u16 vid = port_vlan->vid; + int port_count; + + br_port = port_vlan->br_port; + port_count = prestera_bridge_vlan_port_count(br_port->bridge, vid); + br_vlan = prestera_bridge_vlan_by_vid(br_port, vid); + + last_vlan = list_is_singular(&br_port->vlan_list); + last_port = port_count == 1; + + if (last_vlan) + prestera_hw_fdb_flush_port(port, fdb_flush_mode); + else if (last_port) + prestera_hw_fdb_flush_vlan(port->sw, vid, fdb_flush_mode); + else + prestera_hw_fdb_flush_port_vlan(port, vid, fdb_flush_mode); + + list_del(&port_vlan->br_vlan_head); + prestera_bridge_vlan_put(br_vlan); + prestera_bridge_port_put(br_port); + port_vlan->br_port = NULL; +} + +static void prestera_port_vlan_destroy(struct prestera_port_vlan *port_vlan) +{ + struct prestera_port *port = port_vlan->port; + u16 vid = port_vlan->vid; + + if (port_vlan->br_port) + prestera_port_vlan_bridge_leave(port_vlan); + + prestera_hw_vlan_port_set(port, vid, false, false); + list_del(&port_vlan->port_head); + kfree(port_vlan); +} + +static struct prestera_bridge * +prestera_bridge_create(struct prestera_switchdev *swdev, struct net_device *dev) +{ + bool vlan_enabled = br_vlan_enabled(dev); + struct prestera_bridge *bridge; + u16 bridge_id; + int err; + + if (vlan_enabled && swdev->bridge_8021q_exists) { + netdev_err(dev, "Only one VLAN-aware bridge is supported\n"); + return ERR_PTR(-EINVAL); + } + + bridge = kzalloc(sizeof(*bridge), GFP_KERNEL); + if (!bridge) + return ERR_PTR(-ENOMEM); + + if (vlan_enabled) { + swdev->bridge_8021q_exists = true; + } else { + err = prestera_hw_bridge_create(swdev->sw, &bridge_id); + if (err) { + kfree(bridge); + return ERR_PTR(err); + } + + bridge->bridge_id = bridge_id; + } + + bridge->vlan_enabled = vlan_enabled; + bridge->swdev = swdev; + bridge->dev = dev; + + INIT_LIST_HEAD(&bridge->port_list); + + list_add(&bridge->head, &swdev->bridge_list); + + return bridge; +} + +static void prestera_bridge_destroy(struct prestera_bridge *bridge) +{ + struct prestera_switchdev *swdev = bridge->swdev; + + list_del(&bridge->head); + + if (bridge->vlan_enabled) + swdev->bridge_8021q_exists = false; + else + prestera_hw_bridge_delete(swdev->sw, bridge->bridge_id); + + WARN_ON(!list_empty(&bridge->port_list)); + kfree(bridge); +} + +static void prestera_bridge_put(struct prestera_bridge *bridge) +{ + if (list_empty(&bridge->port_list)) + prestera_bridge_destroy(bridge); +} + +static +struct prestera_bridge *prestera_bridge_by_dev(struct prestera_switchdev *swdev, + const struct net_device *dev) +{ + struct prestera_bridge *bridge; + + list_for_each_entry(bridge, &swdev->bridge_list, head) + if (bridge->dev == dev) + return bridge; + + return NULL; +} + +static struct prestera_bridge_port * +__prestera_bridge_port_by_dev(struct prestera_bridge *bridge, + struct net_device *dev) +{ + struct prestera_bridge_port *br_port; + + list_for_each_entry(br_port, &bridge->port_list, head) { + if (br_port->dev == dev) + return br_port; + } + + return NULL; +} + +static struct prestera_bridge_port * +prestera_bridge_port_by_dev(struct prestera_switchdev *swdev, + struct net_device *dev) +{ + struct net_device *br_dev = netdev_master_upper_dev_get(dev); + struct prestera_bridge *bridge; + + if (!br_dev) + return NULL; + + bridge = prestera_bridge_by_dev(swdev, br_dev); + if (!bridge) + return NULL; + + return __prestera_bridge_port_by_dev(bridge, dev); +} + +static struct prestera_bridge_port * +prestera_bridge_port_create(struct prestera_bridge *bridge, + struct net_device *dev) +{ + struct prestera_bridge_port *br_port; + + br_port = kzalloc(sizeof(*br_port), GFP_KERNEL); + if (!br_port) + return NULL; + + br_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC | + BR_MCAST_FLOOD; + br_port->stp_state = BR_STATE_DISABLED; + refcount_set(&br_port->ref_count, 1); + br_port->bridge = bridge; + br_port->dev = dev; + + INIT_LIST_HEAD(&br_port->vlan_list); + list_add(&br_port->head, &bridge->port_list); + + return br_port; +} + +static void +prestera_bridge_port_destroy(struct prestera_bridge_port *br_port) +{ + list_del(&br_port->head); + WARN_ON(!list_empty(&br_port->vlan_list)); + kfree(br_port); +} + +static void prestera_bridge_port_get(struct prestera_bridge_port *br_port) +{ + refcount_inc(&br_port->ref_count); +} + +static void prestera_bridge_port_put(struct prestera_bridge_port *br_port) +{ + struct prestera_bridge *bridge = br_port->bridge; + + if (refcount_dec_and_test(&br_port->ref_count)) { + prestera_bridge_port_destroy(br_port); + prestera_bridge_put(bridge); + } +} + +static struct prestera_bridge_port * +prestera_bridge_port_add(struct prestera_bridge *bridge, struct net_device *dev) +{ + struct prestera_bridge_port *br_port; + + br_port = __prestera_bridge_port_by_dev(bridge, dev); + if (br_port) { + prestera_bridge_port_get(br_port); + return br_port; + } + + br_port = prestera_bridge_port_create(bridge, dev); + if (!br_port) + return ERR_PTR(-ENOMEM); + + return br_port; +} + +static int +prestera_bridge_1d_port_join(struct prestera_bridge_port *br_port) +{ + struct prestera_port *port = netdev_priv(br_port->dev); + struct prestera_bridge *bridge = br_port->bridge; + int err; + + err = prestera_hw_bridge_port_add(port, bridge->bridge_id); + if (err) + return err; + + err = prestera_hw_port_flood_set(port, br_port->flags & BR_FLOOD); + if (err) + goto err_port_flood_set; + + err = prestera_hw_port_learning_set(port, br_port->flags & BR_LEARNING); + if (err) + goto err_port_learning_set; + + return 0; + +err_port_learning_set: + prestera_hw_port_flood_set(port, false); +err_port_flood_set: + prestera_hw_bridge_port_delete(port, bridge->bridge_id); + + return err; +} + +static int prestera_port_bridge_join(struct prestera_port *port, + struct net_device *upper) +{ + struct prestera_switchdev *swdev = port->sw->swdev; + struct prestera_bridge_port *br_port; + struct prestera_bridge *bridge; + int err; + + bridge = prestera_bridge_by_dev(swdev, upper); + if (!bridge) { + bridge = prestera_bridge_create(swdev, upper); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); + } + + br_port = prestera_bridge_port_add(bridge, port->dev); + if (IS_ERR(br_port)) { + err = PTR_ERR(br_port); + goto err_brport_create; + } + + if (bridge->vlan_enabled) + return 0; + + err = prestera_bridge_1d_port_join(br_port); + if (err) + goto err_port_join; + + return 0; + +err_port_join: + prestera_bridge_port_put(br_port); +err_brport_create: + prestera_bridge_put(bridge); + return err; +} + +static void prestera_bridge_1q_port_leave(struct prestera_bridge_port *br_port) +{ + struct prestera_port *port = netdev_priv(br_port->dev); + + prestera_hw_fdb_flush_port(port, PRESTERA_FDB_FLUSH_MODE_ALL); + prestera_port_pvid_set(port, PRESTERA_DEFAULT_VID); +} + +static void prestera_bridge_1d_port_leave(struct prestera_bridge_port *br_port) +{ + struct prestera_port *port = netdev_priv(br_port->dev); + + prestera_hw_fdb_flush_port(port, PRESTERA_FDB_FLUSH_MODE_ALL); + prestera_hw_bridge_port_delete(port, br_port->bridge->bridge_id); +} + +static int prestera_port_vid_stp_set(struct prestera_port *port, u16 vid, + u8 state) +{ + u8 hw_state = state; + + switch (state) { + case BR_STATE_DISABLED: + hw_state = PRESTERA_STP_DISABLED; + break; + + case BR_STATE_BLOCKING: + case BR_STATE_LISTENING: + hw_state = PRESTERA_STP_BLOCK_LISTEN; + break; + + case BR_STATE_LEARNING: + hw_state = PRESTERA_STP_LEARN; + break; + + case BR_STATE_FORWARDING: + hw_state = PRESTERA_STP_FORWARD; + break; + + default: + return -EINVAL; + } + + return prestera_hw_vlan_port_stp_set(port, vid, hw_state); +} + +static void prestera_port_bridge_leave(struct prestera_port *port, + struct net_device *upper) +{ + struct prestera_switchdev *swdev = port->sw->swdev; + struct prestera_bridge_port *br_port; + struct prestera_bridge *bridge; + + bridge = prestera_bridge_by_dev(swdev, upper); + if (!bridge) + return; + + br_port = __prestera_bridge_port_by_dev(bridge, port->dev); + if (!br_port) + return; + + bridge = br_port->bridge; + + if (bridge->vlan_enabled) + prestera_bridge_1q_port_leave(br_port); + else + prestera_bridge_1d_port_leave(br_port); + + prestera_hw_port_learning_set(port, false); + prestera_hw_port_flood_set(port, false); + prestera_port_vid_stp_set(port, PRESTERA_VID_ALL, BR_STATE_FORWARDING); + prestera_bridge_port_put(br_port); +} + +int prestera_bridge_port_event(struct net_device *dev, unsigned long event, + void *ptr) +{ + struct netdev_notifier_changeupper_info *info = ptr; + struct netlink_ext_ack *extack; + struct prestera_port *port; + struct net_device *upper; + int err; + + extack = netdev_notifier_info_to_extack(&info->info); + port = netdev_priv(dev); + upper = info->upper_dev; + + switch (event) { + case NETDEV_PRECHANGEUPPER: + if (!netif_is_bridge_master(upper)) { + NL_SET_ERR_MSG_MOD(extack, "Unknown upper device type"); + return -EINVAL; + } + + if (!info->linking) + break; + + if (netdev_has_any_upper_dev(upper)) { + NL_SET_ERR_MSG_MOD(extack, "Upper device is already enslaved"); + return -EINVAL; + } + break; + + case NETDEV_CHANGEUPPER: + if (!netif_is_bridge_master(upper)) + break; + + if (info->linking) { + err = prestera_port_bridge_join(port, upper); + if (err) + return err; + } else { + prestera_port_bridge_leave(port, upper); + } + break; + } + + return 0; +} + +static int prestera_port_attr_br_flags_set(struct prestera_port *port, + struct switchdev_trans *trans, + struct net_device *dev, + unsigned long flags) +{ + struct prestera_bridge_port *br_port; + int err; + + if (switchdev_trans_ph_prepare(trans)) + return 0; + + br_port = prestera_bridge_port_by_dev(port->sw->swdev, dev); + if (!br_port) + return 0; + + err = prestera_hw_port_flood_set(port, flags & BR_FLOOD); + if (err) + return err; + + err = prestera_hw_port_learning_set(port, flags & BR_LEARNING); + if (err) + return err; + + memcpy(&br_port->flags, &flags, sizeof(flags)); + + return 0; +} + +static int prestera_port_attr_br_ageing_set(struct prestera_port *port, + struct switchdev_trans *trans, + unsigned long ageing_clock_t) +{ + unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); + u32 ageing_time_ms = jiffies_to_msecs(ageing_jiffies); + struct prestera_switch *sw = port->sw; + + if (switchdev_trans_ph_prepare(trans)) { + if (ageing_time_ms < PRESTERA_MIN_AGEING_TIME_MS || + ageing_time_ms > PRESTERA_MAX_AGEING_TIME_MS) + return -ERANGE; + else + return 0; + } + + return prestera_hw_switch_ageing_set(sw, ageing_time_ms); +} + +static int prestera_port_attr_br_vlan_set(struct prestera_port *port, + struct switchdev_trans *trans, + struct net_device *dev, + bool vlan_enabled) +{ + struct prestera_switch *sw = port->sw; + struct prestera_bridge *bridge; + + if (!switchdev_trans_ph_prepare(trans)) + return 0; + + bridge = prestera_bridge_by_dev(sw->swdev, dev); + if (WARN_ON(!bridge)) + return -EINVAL; + + if (bridge->vlan_enabled == vlan_enabled) + return 0; + + netdev_err(bridge->dev, "VLAN filtering can't be changed for existing bridge\n"); + + return -EINVAL; +} + +static int prestera_port_bridge_vlan_stp_set(struct prestera_port *port, + struct prestera_bridge_vlan *br_vlan, + u8 state) +{ + struct prestera_port_vlan *port_vlan; + + list_for_each_entry(port_vlan, &br_vlan->port_vlan_list, br_vlan_head) { + if (port_vlan->port != port) + continue; + + return prestera_port_vid_stp_set(port, br_vlan->vid, state); + } + + return 0; +} + +static int presterar_port_attr_stp_state_set(struct prestera_port *port, + struct switchdev_trans *trans, + struct net_device *dev, + u8 state) +{ + struct prestera_bridge_port *br_port; + struct prestera_bridge_vlan *br_vlan; + int err; + u16 vid; + + if (switchdev_trans_ph_prepare(trans)) + return 0; + + br_port = prestera_bridge_port_by_dev(port->sw->swdev, dev); + if (!br_port) + return 0; + + if (!br_port->bridge->vlan_enabled) { + vid = br_port->bridge->bridge_id; + err = prestera_port_vid_stp_set(port, vid, state); + if (err) + goto err_port_stp_set; + } else { + list_for_each_entry(br_vlan, &br_port->vlan_list, head) { + err = prestera_port_bridge_vlan_stp_set(port, br_vlan, + state); + if (err) + goto err_port_vlan_stp_set; + } + } + + br_port->stp_state = state; + + return 0; + +err_port_vlan_stp_set: + list_for_each_entry_continue_reverse(br_vlan, &br_port->vlan_list, head) + prestera_port_bridge_vlan_stp_set(port, br_vlan, br_port->stp_state); + return err; + +err_port_stp_set: + prestera_port_vid_stp_set(port, vid, br_port->stp_state); + + return err; +} + +static int prestera_port_obj_attr_set(struct net_device *dev, + const struct switchdev_attr *attr, + struct switchdev_trans *trans) +{ + struct prestera_port *port = netdev_priv(dev); + int err = 0; + + switch (attr->id) { + case SWITCHDEV_ATTR_ID_PORT_STP_STATE: + err = presterar_port_attr_stp_state_set(port, trans, + attr->orig_dev, + attr->u.stp_state); + break; + case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS: + if (attr->u.brport_flags & + ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD)) + err = -EINVAL; + break; + case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS: + err = prestera_port_attr_br_flags_set(port, trans, + attr->orig_dev, + attr->u.brport_flags); + break; + case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: + err = prestera_port_attr_br_ageing_set(port, trans, + attr->u.ageing_time); + break; + case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: + err = prestera_port_attr_br_vlan_set(port, trans, + attr->orig_dev, + attr->u.vlan_filtering); + break; + default: + err = -EOPNOTSUPP; + } + + return err; +} + +static void +prestera_fdb_offload_notify(struct prestera_port *port, + struct switchdev_notifier_fdb_info *info) +{ + struct switchdev_notifier_fdb_info send_info; + + send_info.addr = info->addr; + send_info.vid = info->vid; + send_info.offloaded = true; + + call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, port->dev, + &send_info.info, NULL); +} + +static int prestera_port_fdb_set(struct prestera_port *port, + struct switchdev_notifier_fdb_info *fdb_info, + bool adding) +{ + struct prestera_switch *sw = port->sw; + struct prestera_bridge_port *br_port; + struct prestera_bridge *bridge; + int err; + u16 vid; + + br_port = prestera_bridge_port_by_dev(sw->swdev, port->dev); + if (!br_port) + return -EINVAL; + + bridge = br_port->bridge; + + if (bridge->vlan_enabled) + vid = fdb_info->vid; + else + vid = bridge->bridge_id; + + if (adding) + err = prestera_hw_fdb_add(port, fdb_info->addr, vid, false); + else + err = prestera_hw_fdb_del(port, fdb_info->addr, vid); + + return err; +} + +static void prestera_fdb_event_work(struct work_struct *work) +{ + struct switchdev_notifier_fdb_info *fdb_info; + struct prestera_fdb_event_work *swdev_work; + struct prestera_port *port; + struct net_device *dev; + int err; + + swdev_work = container_of(work, struct prestera_fdb_event_work, work); + dev = swdev_work->dev; + + rtnl_lock(); + + port = prestera_port_dev_lower_find(dev); + if (!port) + goto out_unlock; + + switch (swdev_work->event) { + case SWITCHDEV_FDB_ADD_TO_DEVICE: + fdb_info = &swdev_work->fdb_info; + if (!fdb_info->added_by_user) + break; + + err = prestera_port_fdb_set(port, fdb_info, true); + if (err) + break; + + prestera_fdb_offload_notify(port, fdb_info); + break; + + case SWITCHDEV_FDB_DEL_TO_DEVICE: + fdb_info = &swdev_work->fdb_info; + prestera_port_fdb_set(port, fdb_info, false); + break; + } + +out_unlock: + rtnl_unlock(); + + kfree(swdev_work->fdb_info.addr); + kfree(swdev_work); + dev_put(dev); +} + +static int prestera_switchdev_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = switchdev_notifier_info_to_dev(ptr); + struct switchdev_notifier_fdb_info *fdb_info; + struct switchdev_notifier_info *info = ptr; + struct prestera_fdb_event_work *swdev_work; + struct net_device *upper; + int err; + + if (event == SWITCHDEV_PORT_ATTR_SET) { + err = switchdev_handle_port_attr_set(dev, ptr, + prestera_netdev_check, + prestera_port_obj_attr_set); + return notifier_from_errno(err); + } + + if (!prestera_netdev_check(dev)) + return NOTIFY_DONE; + + upper = netdev_master_upper_dev_get_rcu(dev); + if (!upper) + return NOTIFY_DONE; + + if (!netif_is_bridge_master(upper)) + return NOTIFY_DONE; + + swdev_work = kzalloc(sizeof(*swdev_work), GFP_ATOMIC); + if (!swdev_work) + return NOTIFY_BAD; + + swdev_work->event = event; + swdev_work->dev = dev; + + switch (event) { + case SWITCHDEV_FDB_ADD_TO_DEVICE: + case SWITCHDEV_FDB_DEL_TO_DEVICE: + fdb_info = container_of(info, + struct switchdev_notifier_fdb_info, + info); + + INIT_WORK(&swdev_work->work, prestera_fdb_event_work); + memcpy(&swdev_work->fdb_info, ptr, + sizeof(swdev_work->fdb_info)); + + swdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); + if (!swdev_work->fdb_info.addr) + goto out_bad; + + ether_addr_copy((u8 *)swdev_work->fdb_info.addr, + fdb_info->addr); + dev_hold(dev); + break; + + default: + kfree(swdev_work); + return NOTIFY_DONE; + } + + queue_work(swdev_wq, &swdev_work->work); + return NOTIFY_DONE; + +out_bad: + kfree(swdev_work); + return NOTIFY_BAD; +} + +static int +prestera_port_vlan_bridge_join(struct prestera_port_vlan *port_vlan, + struct prestera_bridge_port *br_port) +{ + struct prestera_port *port = port_vlan->port; + struct prestera_bridge_vlan *br_vlan; + u16 vid = port_vlan->vid; + int err; + + if (port_vlan->br_port) + return 0; + + err = prestera_hw_port_flood_set(port, br_port->flags & BR_FLOOD); + if (err) + return err; + + err = prestera_hw_port_learning_set(port, br_port->flags & BR_LEARNING); + if (err) + goto err_port_learning_set; + + err = prestera_port_vid_stp_set(port, vid, br_port->stp_state); + if (err) + goto err_port_vid_stp_set; + + br_vlan = prestera_bridge_vlan_by_vid(br_port, vid); + if (!br_vlan) { + br_vlan = prestera_bridge_vlan_create(br_port, vid); + if (!br_vlan) { + err = -ENOMEM; + goto err_bridge_vlan_get; + } + } + + list_add(&port_vlan->br_vlan_head, &br_vlan->port_vlan_list); + + prestera_bridge_port_get(br_port); + port_vlan->br_port = br_port; + + return 0; + +err_bridge_vlan_get: + prestera_port_vid_stp_set(port, vid, BR_STATE_FORWARDING); +err_port_vid_stp_set: + prestera_hw_port_learning_set(port, false); +err_port_learning_set: + return err; +} + +static int +prestera_bridge_port_vlan_add(struct prestera_port *port, + struct prestera_bridge_port *br_port, + u16 vid, bool is_untagged, bool is_pvid, + struct netlink_ext_ack *extack) +{ + struct prestera_port_vlan *port_vlan; + u16 old_pvid = port->pvid; + u16 pvid; + int err; + + if (is_pvid) + pvid = vid; + else + pvid = port->pvid == vid ? 0 : port->pvid; + + port_vlan = prestera_port_vlan_by_vid(port, vid); + if (port_vlan && port_vlan->br_port != br_port) + return -EEXIST; + + if (!port_vlan) { + port_vlan = prestera_port_vlan_create(port, vid, is_untagged); + if (IS_ERR(port_vlan)) + return PTR_ERR(port_vlan); + } else { + err = prestera_hw_vlan_port_set(port, vid, true, is_untagged); + if (err) + goto err_port_vlan_set; + } + + err = prestera_port_pvid_set(port, pvid); + if (err) + goto err_port_pvid_set; + + err = prestera_port_vlan_bridge_join(port_vlan, br_port); + if (err) + goto err_port_vlan_bridge_join; + + return 0; + +err_port_vlan_bridge_join: + prestera_port_pvid_set(port, old_pvid); +err_port_pvid_set: + prestera_hw_vlan_port_set(port, vid, false, false); +err_port_vlan_set: + prestera_port_vlan_destroy(port_vlan); + + return err; +} + +static void +prestera_bridge_port_vlan_del(struct prestera_port *port, + struct prestera_bridge_port *br_port, u16 vid) +{ + u16 pvid = port->pvid == vid ? 0 : port->pvid; + struct prestera_port_vlan *port_vlan; + + port_vlan = prestera_port_vlan_by_vid(port, vid); + if (WARN_ON(!port_vlan)) + return; + + prestera_port_vlan_bridge_leave(port_vlan); + prestera_port_pvid_set(port, pvid); + prestera_port_vlan_destroy(port_vlan); +} + +static int prestera_port_vlans_add(struct prestera_port *port, + const struct switchdev_obj_port_vlan *vlan, + struct switchdev_trans *trans, + struct netlink_ext_ack *extack) +{ + bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; + bool flag_pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; + struct net_device *dev = vlan->obj.orig_dev; + struct prestera_bridge_port *br_port; + struct prestera_switch *sw = port->sw; + struct prestera_bridge *bridge; + u16 vid; + + if (netif_is_bridge_master(dev)) + return 0; + + if (switchdev_trans_ph_commit(trans)) + return 0; + + br_port = prestera_bridge_port_by_dev(sw->swdev, dev); + if (WARN_ON(!br_port)) + return -EINVAL; + + bridge = br_port->bridge; + if (!bridge->vlan_enabled) + return 0; + + for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { + int err; + + err = prestera_bridge_port_vlan_add(port, br_port, + vid, flag_untagged, + flag_pvid, extack); + if (err) + return err; + } + + return 0; +} + +static int prestera_port_obj_add(struct net_device *dev, + const struct switchdev_obj *obj, + struct switchdev_trans *trans, + struct netlink_ext_ack *extack) +{ + struct prestera_port *port = netdev_priv(dev); + const struct switchdev_obj_port_vlan *vlan; + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_VLAN: + vlan = SWITCHDEV_OBJ_PORT_VLAN(obj); + return prestera_port_vlans_add(port, vlan, trans, extack); + default: + return -EOPNOTSUPP; + } +} + +static int prestera_port_vlans_del(struct prestera_port *port, + const struct switchdev_obj_port_vlan *vlan) +{ + struct net_device *dev = vlan->obj.orig_dev; + struct prestera_bridge_port *br_port; + struct prestera_switch *sw = port->sw; + u16 vid; + + if (netif_is_bridge_master(dev)) + return -EOPNOTSUPP; + + br_port = prestera_bridge_port_by_dev(sw->swdev, dev); + if (WARN_ON(!br_port)) + return -EINVAL; + + if (!br_port->bridge->vlan_enabled) + return 0; + + for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) + prestera_bridge_port_vlan_del(port, br_port, vid); + + return 0; +} + +static int prestera_port_obj_del(struct net_device *dev, + const struct switchdev_obj *obj) +{ + struct prestera_port *port = netdev_priv(dev); + + switch (obj->id) { + case SWITCHDEV_OBJ_ID_PORT_VLAN: + return prestera_port_vlans_del(port, SWITCHDEV_OBJ_PORT_VLAN(obj)); + default: + return -EOPNOTSUPP; + } +} + +static int prestera_switchdev_blk_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = switchdev_notifier_info_to_dev(ptr); + int err; + + switch (event) { + case SWITCHDEV_PORT_OBJ_ADD: + err = switchdev_handle_port_obj_add(dev, ptr, + prestera_netdev_check, + prestera_port_obj_add); + break; + case SWITCHDEV_PORT_OBJ_DEL: + err = switchdev_handle_port_obj_del(dev, ptr, + prestera_netdev_check, + prestera_port_obj_del); + break; + case SWITCHDEV_PORT_ATTR_SET: + err = switchdev_handle_port_attr_set(dev, ptr, + prestera_netdev_check, + prestera_port_obj_attr_set); + break; + default: + err = -EOPNOTSUPP; + } + + return notifier_from_errno(err); +} + +static void prestera_fdb_event(struct prestera_switch *sw, + struct prestera_event *evt, void *arg) +{ + struct switchdev_notifier_fdb_info info; + struct prestera_port *port; + + port = prestera_find_port(sw, evt->fdb_evt.port_id); + if (!port) + return; + + info.addr = evt->fdb_evt.data.mac; + info.vid = evt->fdb_evt.vid; + info.offloaded = true; + + rtnl_lock(); + + switch (evt->id) { + case PRESTERA_FDB_EVENT_LEARNED: + call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE, + port->dev, &info.info, NULL); + break; + case PRESTERA_FDB_EVENT_AGED: + call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, + port->dev, &info.info, NULL); + break; + } + + rtnl_unlock(); +} + +static int prestera_fdb_init(struct prestera_switch *sw) +{ + int err; + + err = prestera_hw_event_handler_register(sw, PRESTERA_EVENT_TYPE_FDB, + prestera_fdb_event, NULL); + if (err) + return err; + + err = prestera_hw_switch_ageing_set(sw, PRESTERA_DEFAULT_AGEING_TIME_MS); + if (err) + goto err_ageing_set; + + return 0; + +err_ageing_set: + prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_FDB, + prestera_fdb_event); + return err; +} + +static void prestera_fdb_fini(struct prestera_switch *sw) +{ + prestera_hw_event_handler_unregister(sw, PRESTERA_EVENT_TYPE_FDB, + prestera_fdb_event); +} + +static int prestera_switchdev_handler_init(struct prestera_switchdev *swdev) +{ + int err; + + swdev->swdev_nb.notifier_call = prestera_switchdev_event; + err = register_switchdev_notifier(&swdev->swdev_nb); + if (err) + goto err_register_swdev_notifier; + + swdev->swdev_nb_blk.notifier_call = prestera_switchdev_blk_event; + err = register_switchdev_blocking_notifier(&swdev->swdev_nb_blk); + if (err) + goto err_register_blk_swdev_notifier; + + return 0; + +err_register_blk_swdev_notifier: + unregister_switchdev_notifier(&swdev->swdev_nb); +err_register_swdev_notifier: + destroy_workqueue(swdev_wq); + return err; +} + +static void prestera_switchdev_handler_fini(struct prestera_switchdev *swdev) +{ + unregister_switchdev_blocking_notifier(&swdev->swdev_nb_blk); + unregister_switchdev_notifier(&swdev->swdev_nb); +} + +int prestera_switchdev_init(struct prestera_switch *sw) +{ + struct prestera_switchdev *swdev; + int err; + + swdev = kzalloc(sizeof(*swdev), GFP_KERNEL); + if (!swdev) + return -ENOMEM; + + sw->swdev = swdev; + swdev->sw = sw; + + INIT_LIST_HEAD(&swdev->bridge_list); + + swdev_wq = alloc_ordered_workqueue("%s_ordered", 0, "prestera_br"); + if (!swdev_wq) { + err = -ENOMEM; + goto err_alloc_wq; + } + + err = prestera_switchdev_handler_init(swdev); + if (err) + goto err_swdev_init; + + err = prestera_fdb_init(sw); + if (err) + goto err_fdb_init; + + return 0; + +err_fdb_init: +err_swdev_init: + destroy_workqueue(swdev_wq); +err_alloc_wq: + kfree(swdev); + + return err; +} + +void prestera_switchdev_fini(struct prestera_switch *sw) +{ + struct prestera_switchdev *swdev = sw->swdev; + + prestera_fdb_fini(sw); + prestera_switchdev_handler_fini(swdev); + destroy_workqueue(swdev_wq); + kfree(swdev); +} diff --git a/drivers/net/ethernet/marvell/prestera/prestera_switchdev.h b/drivers/net/ethernet/marvell/prestera/prestera_switchdev.h new file mode 100644 index 000000000000..606e21d2355b --- /dev/null +++ b/drivers/net/ethernet/marvell/prestera/prestera_switchdev.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ +/* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved. */ + +#ifndef _PRESTERA_SWITCHDEV_H_ +#define _PRESTERA_SWITCHDEV_H_ + +int prestera_switchdev_init(struct prestera_switch *sw); +void prestera_switchdev_fini(struct prestera_switch *sw); + +int prestera_bridge_port_event(struct net_device *dev, unsigned long event, + void *ptr); + +#endif /* _PRESTERA_SWITCHDEV_H_ */