[PATCH 5.15 120/168] net: hns3: refactor function hclge_mbx_handler()

5.15-stable review patch. If anyone has any objections, please let me know.

------------------

From: Hao Lan lanhao@huawei.com

[ Upstream commit 09431ed8de874881e2d5d430042d718ae074d371 ]

Currently, the function hclge_mbx_handler() has too many switch-case statements, it makes this function too long. To improve code readability, refactor this function and use lookup table instead.

Signed-off-by: Hao Lan lanhao@huawei.com Signed-off-by: Guangbin Huang huangguangbin2@huawei.com Signed-off-by: Jakub Kicinski kuba@kernel.org Stable-dep-of: 669554c512d2 ("net: hns3: direct return when receive a unknown mailbox message") Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/hisilicon/hns3/hclge_mbx.h | 11 + .../hisilicon/hns3/hns3pf/hclge_mbx.c | 415 ++++++++++++------ 2 files changed, 284 insertions(+), 142 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h index 09a2a7c9fca43..debbaa1822aa0 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h +++ b/drivers/net/ethernet/hisilicon/hns3/hclge_mbx.h @@ -212,6 +212,17 @@ struct hclgevf_mbx_arq_ring { __le16 msg_q[HCLGE_MBX_MAX_ARQ_MSG_NUM][HCLGE_MBX_MAX_ARQ_MSG_SIZE]; };

+struct hclge_dev; + +#define HCLGE_MBX_OPCODE_MAX 256 +struct hclge_mbx_ops_param { + struct hclge_vport *vport; + struct hclge_mbx_vf_to_pf_cmd *req; + struct hclge_respond_to_vf_msg *resp_msg; +}; + +typedef int (*hclge_mbx_ops_fn)(struct hclge_mbx_ops_param *param); + #define hclge_mbx_ring_ptr_move_crq(crq) \ (crq->next_to_use = (crq->next_to_use + 1) % crq->desc_num) #define hclge_mbx_tail_ptr_move_arq(arq) \ diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c index 839555bf4bc49..39848bcd77c75 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c @@ -774,17 +774,284 @@ static void hclge_handle_vf_tbl(struct hclge_vport *vport, } }

+static int +hclge_mbx_map_ring_to_vector_handler(struct hclge_mbx_ops_param *param) +{ + return hclge_map_unmap_ring_to_vf_vector(param->vport, true, + param->req); +} + +static int +hclge_mbx_unmap_ring_to_vector_handler(struct hclge_mbx_ops_param *param) +{ + return hclge_map_unmap_ring_to_vf_vector(param->vport, false, + param->req); +} + +static int +hclge_mbx_get_ring_vector_map_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_get_vf_ring_vector_map(param->vport, param->req, + param->resp_msg); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "PF fail(%d) to get VF ring vector map\n", + ret); + return ret; +} + +static int hclge_mbx_set_promisc_mode_handler(struct hclge_mbx_ops_param *param) +{ + hclge_set_vf_promisc_mode(param->vport, param->req); + return 0; +} + +static int hclge_mbx_set_unicast_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_set_vf_uc_mac_addr(param->vport, param->req); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "PF fail(%d) to set VF UC MAC Addr\n", + ret); + return ret; +} + +static int hclge_mbx_set_multicast_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_set_vf_mc_mac_addr(param->vport, param->req); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "PF fail(%d) to set VF MC MAC Addr\n", + ret); + return ret; +} + +static int hclge_mbx_set_vlan_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_set_vf_vlan_cfg(param->vport, param->req, param->resp_msg); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "PF failed(%d) to config VF's VLAN\n", + ret); + return ret; +} + +static int hclge_mbx_set_alive_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_set_vf_alive(param->vport, param->req); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "PF failed(%d) to set VF's ALIVE\n", + ret); + return ret; +} + +static int hclge_mbx_get_qinfo_handler(struct hclge_mbx_ops_param *param) +{ + hclge_get_vf_queue_info(param->vport, param->resp_msg); + return 0; +} + +static int hclge_mbx_get_qdepth_handler(struct hclge_mbx_ops_param *param) +{ + hclge_get_vf_queue_depth(param->vport, param->resp_msg); + return 0; +} + +static int hclge_mbx_get_basic_info_handler(struct hclge_mbx_ops_param *param) +{ + hclge_get_basic_info(param->vport, param->resp_msg); + return 0; +} + +static int hclge_mbx_get_link_status_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_push_vf_link_status(param->vport); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "failed to inform link stat to VF, ret = %d\n", + ret); + return ret; +} + +static int hclge_mbx_queue_reset_handler(struct hclge_mbx_ops_param *param) +{ + return hclge_mbx_reset_vf_queue(param->vport, param->req, + param->resp_msg); +} + +static int hclge_mbx_reset_handler(struct hclge_mbx_ops_param *param) +{ + return hclge_reset_vf(param->vport); +} + +static int hclge_mbx_keep_alive_handler(struct hclge_mbx_ops_param *param) +{ + hclge_vf_keep_alive(param->vport); + return 0; +} + +static int hclge_mbx_set_mtu_handler(struct hclge_mbx_ops_param *param) +{ + int ret; + + ret = hclge_set_vf_mtu(param->vport, param->req); + if (ret) + dev_err(&param->vport->back->pdev->dev, + "VF fail(%d) to set mtu\n", ret); + return ret; +} + +static int hclge_mbx_get_qid_in_pf_handler(struct hclge_mbx_ops_param *param) +{ + return hclge_get_queue_id_in_pf(param->vport, param->req, + param->resp_msg); +} + +static int hclge_mbx_get_rss_key_handler(struct hclge_mbx_ops_param *param) +{ + return hclge_get_rss_key(param->vport, param->req, param->resp_msg); +} + +static int hclge_mbx_get_link_mode_handler(struct hclge_mbx_ops_param *param) +{ + hclge_get_link_mode(param->vport, param->req); + return 0; +} + +static int +hclge_mbx_get_vf_flr_status_handler(struct hclge_mbx_ops_param *param) +{ + hclge_rm_vport_all_mac_table(param->vport, false, + HCLGE_MAC_ADDR_UC); + hclge_rm_vport_all_mac_table(param->vport, false, + HCLGE_MAC_ADDR_MC); + hclge_rm_vport_all_vlan_table(param->vport, false); + return 0; +} + +static int hclge_mbx_vf_uninit_handler(struct hclge_mbx_ops_param *param) +{ + hclge_rm_vport_all_mac_table(param->vport, true, + HCLGE_MAC_ADDR_UC); + hclge_rm_vport_all_mac_table(param->vport, true, + HCLGE_MAC_ADDR_MC); + hclge_rm_vport_all_vlan_table(param->vport, true); + return 0; +} + +static int hclge_mbx_get_media_type_handler(struct hclge_mbx_ops_param *param) +{ + hclge_get_vf_media_type(param->vport, param->resp_msg); + return 0; +} + +static int hclge_mbx_push_link_status_handler(struct hclge_mbx_ops_param *param) +{ + hclge_handle_link_change_event(param->vport->back, param->req); + return 0; +} + +static int hclge_mbx_get_mac_addr_handler(struct hclge_mbx_ops_param *param) +{ + hclge_get_vf_mac_addr(param->vport, param->resp_msg); + return 0; +} + +static int hclge_mbx_ncsi_error_handler(struct hclge_mbx_ops_param *param) +{ + hclge_handle_ncsi_error(param->vport->back); + return 0; +} + +static int hclge_mbx_handle_vf_tbl_handler(struct hclge_mbx_ops_param *param) +{ + hclge_handle_vf_tbl(param->vport, param->req); + return 0; +} + +static const hclge_mbx_ops_fn hclge_mbx_ops_list[HCLGE_MBX_OPCODE_MAX] = { + [HCLGE_MBX_RESET] = hclge_mbx_reset_handler, + [HCLGE_MBX_SET_UNICAST] = hclge_mbx_set_unicast_handler, + [HCLGE_MBX_SET_MULTICAST] = hclge_mbx_set_multicast_handler, + [HCLGE_MBX_SET_VLAN] = hclge_mbx_set_vlan_handler, + [HCLGE_MBX_MAP_RING_TO_VECTOR] = hclge_mbx_map_ring_to_vector_handler, + [HCLGE_MBX_UNMAP_RING_TO_VECTOR] = hclge_mbx_unmap_ring_to_vector_handler, + [HCLGE_MBX_SET_PROMISC_MODE] = hclge_mbx_set_promisc_mode_handler, + [HCLGE_MBX_GET_QINFO] = hclge_mbx_get_qinfo_handler, + [HCLGE_MBX_GET_QDEPTH] = hclge_mbx_get_qdepth_handler, + [HCLGE_MBX_GET_BASIC_INFO] = hclge_mbx_get_basic_info_handler, + [HCLGE_MBX_GET_RSS_KEY] = hclge_mbx_get_rss_key_handler, + [HCLGE_MBX_GET_MAC_ADDR] = hclge_mbx_get_mac_addr_handler, + [HCLGE_MBX_GET_LINK_STATUS] = hclge_mbx_get_link_status_handler, + [HCLGE_MBX_QUEUE_RESET] = hclge_mbx_queue_reset_handler, + [HCLGE_MBX_KEEP_ALIVE] = hclge_mbx_keep_alive_handler, + [HCLGE_MBX_SET_ALIVE] = hclge_mbx_set_alive_handler, + [HCLGE_MBX_SET_MTU] = hclge_mbx_set_mtu_handler, + [HCLGE_MBX_GET_QID_IN_PF] = hclge_mbx_get_qid_in_pf_handler, + [HCLGE_MBX_GET_LINK_MODE] = hclge_mbx_get_link_mode_handler, + [HCLGE_MBX_GET_MEDIA_TYPE] = hclge_mbx_get_media_type_handler, + [HCLGE_MBX_VF_UNINIT] = hclge_mbx_vf_uninit_handler, + [HCLGE_MBX_HANDLE_VF_TBL] = hclge_mbx_handle_vf_tbl_handler, + [HCLGE_MBX_GET_RING_VECTOR_MAP] = hclge_mbx_get_ring_vector_map_handler, + [HCLGE_MBX_GET_VF_FLR_STATUS] = hclge_mbx_get_vf_flr_status_handler, + [HCLGE_MBX_PUSH_LINK_STATUS] = hclge_mbx_push_link_status_handler, + [HCLGE_MBX_NCSI_ERROR] = hclge_mbx_ncsi_error_handler, +}; + +static void hclge_mbx_request_handling(struct hclge_mbx_ops_param *param) +{ + hclge_mbx_ops_fn cmd_func = NULL; + struct hclge_dev *hdev; + int ret = 0; + + hdev = param->vport->back; + cmd_func = hclge_mbx_ops_list[param->req->msg.code]; + if (cmd_func) + ret = cmd_func(param); + else + dev_err(&hdev->pdev->dev, + "un-supported mailbox message, code = %u\n", + param->req->msg.code); + + /* PF driver should not reply IMP */ + if (hnae3_get_bit(param->req->mbx_need_resp, HCLGE_MBX_NEED_RESP_B) && + param->req->msg.code < HCLGE_MBX_GET_VF_FLR_STATUS) { + param->resp_msg->status = ret; + if (time_is_before_jiffies(hdev->last_mbx_scheduled + + HCLGE_MBX_SCHED_TIMEOUT)) + dev_warn(&hdev->pdev->dev, + "resp vport%u mbx(%u,%u) late\n", + param->req->mbx_src_vfid, + param->req->msg.code, + param->req->msg.subcode); + + hclge_gen_resp_to_vf(param->vport, param->req, param->resp_msg); + } +} + void hclge_mbx_handler(struct hclge_dev *hdev) { struct hclge_cmq_ring *crq = &hdev->hw.cmq.crq; struct hclge_respond_to_vf_msg resp_msg; struct hclge_mbx_vf_to_pf_cmd *req; - struct hclge_vport *vport; + struct hclge_mbx_ops_param param; struct hclge_desc *desc; - bool is_del = false; unsigned int flag; - int ret = 0;

+ param.resp_msg = &resp_msg; /* handle all the mailbox requests in the queue */ while (!hclge_cmd_crq_empty(&hdev->hw)) { if (test_bit(HCLGE_STATE_CMD_DISABLE, &hdev->state)) { @@ -808,152 +1075,16 @@ void hclge_mbx_handler(struct hclge_dev *hdev) continue; }

- vport = &hdev->vport[req->mbx_src_vfid]; - trace_hclge_pf_mbx_get(hdev, req);

/* clear the resp_msg before processing every mailbox message */ memset(&resp_msg, 0, sizeof(resp_msg)); - - switch (req->msg.code) { - case HCLGE_MBX_MAP_RING_TO_VECTOR: - ret = hclge_map_unmap_ring_to_vf_vector(vport, true, - req); - break; - case HCLGE_MBX_UNMAP_RING_TO_VECTOR: - ret = hclge_map_unmap_ring_to_vf_vector(vport, false, - req); - break; - case HCLGE_MBX_GET_RING_VECTOR_MAP: - ret = hclge_get_vf_ring_vector_map(vport, req, - &resp_msg); - if (ret) - dev_err(&hdev->pdev->dev, - "PF fail(%d) to get VF ring vector map\n", - ret); - break; - case HCLGE_MBX_SET_PROMISC_MODE: - hclge_set_vf_promisc_mode(vport, req); - break; - case HCLGE_MBX_SET_UNICAST: - ret = hclge_set_vf_uc_mac_addr(vport, req); - if (ret) - dev_err(&hdev->pdev->dev, - "PF fail(%d) to set VF UC MAC Addr\n", - ret); - break; - case HCLGE_MBX_SET_MULTICAST: - ret = hclge_set_vf_mc_mac_addr(vport, req); - if (ret) - dev_err(&hdev->pdev->dev, - "PF fail(%d) to set VF MC MAC Addr\n", - ret); - break; - case HCLGE_MBX_SET_VLAN: - ret = hclge_set_vf_vlan_cfg(vport, req, &resp_msg); - if (ret) - dev_err(&hdev->pdev->dev, - "PF failed(%d) to config VF's VLAN\n", - ret); - break; - case HCLGE_MBX_SET_ALIVE: - ret = hclge_set_vf_alive(vport, req); - if (ret) - dev_err(&hdev->pdev->dev, - "PF failed(%d) to set VF's ALIVE\n", - ret); - break; - case HCLGE_MBX_GET_QINFO: - hclge_get_vf_queue_info(vport, &resp_msg); - break; - case HCLGE_MBX_GET_QDEPTH: - hclge_get_vf_queue_depth(vport, &resp_msg); - break; - case HCLGE_MBX_GET_BASIC_INFO: - hclge_get_basic_info(vport, &resp_msg); - break; - case HCLGE_MBX_GET_LINK_STATUS: - ret = hclge_push_vf_link_status(vport); - if (ret) - dev_err(&hdev->pdev->dev, - "failed to inform link stat to VF, ret = %d\n", - ret); - break; - case HCLGE_MBX_QUEUE_RESET: - ret = hclge_mbx_reset_vf_queue(vport, req, &resp_msg); - break; - case HCLGE_MBX_RESET: - ret = hclge_reset_vf(vport); - break; - case HCLGE_MBX_KEEP_ALIVE: - hclge_vf_keep_alive(vport); - break; - case HCLGE_MBX_SET_MTU: - ret = hclge_set_vf_mtu(vport, req); - if (ret) - dev_err(&hdev->pdev->dev, - "VF fail(%d) to set mtu\n", ret); - break; - case HCLGE_MBX_GET_QID_IN_PF: - ret = hclge_get_queue_id_in_pf(vport, req, &resp_msg); - break; - case HCLGE_MBX_GET_RSS_KEY: - ret = hclge_get_rss_key(vport, req, &resp_msg); - break; - case HCLGE_MBX_GET_LINK_MODE: - hclge_get_link_mode(vport, req); - break; - case HCLGE_MBX_GET_VF_FLR_STATUS: - case HCLGE_MBX_VF_UNINIT: - is_del = req->msg.code == HCLGE_MBX_VF_UNINIT; - hclge_rm_vport_all_mac_table(vport, is_del, - HCLGE_MAC_ADDR_UC); - hclge_rm_vport_all_mac_table(vport, is_del, - HCLGE_MAC_ADDR_MC); - hclge_rm_vport_all_vlan_table(vport, is_del); - break; - case HCLGE_MBX_GET_MEDIA_TYPE: - hclge_get_vf_media_type(vport, &resp_msg); - break; - case HCLGE_MBX_PUSH_LINK_STATUS: - hclge_handle_link_change_event(hdev, req); - break; - case HCLGE_MBX_GET_MAC_ADDR: - hclge_get_vf_mac_addr(vport, &resp_msg); - break; - case HCLGE_MBX_NCSI_ERROR: - hclge_handle_ncsi_error(hdev); - break; - case HCLGE_MBX_HANDLE_VF_TBL: - hclge_handle_vf_tbl(vport, req); - break; - default: - dev_err(&hdev->pdev->dev, - "un-supported mailbox message, code = %u\n", - req->msg.code); - break; - } - - /* PF driver should not reply IMP */ - if (hnae3_get_bit(req->mbx_need_resp, HCLGE_MBX_NEED_RESP_B) && - req->msg.code < HCLGE_MBX_GET_VF_FLR_STATUS) { - resp_msg.status = ret; - if (time_is_before_jiffies(hdev->last_mbx_scheduled + - HCLGE_MBX_SCHED_TIMEOUT)) - dev_warn(&hdev->pdev->dev, - "resp vport%u mbx(%u,%u) late\n", - req->mbx_src_vfid, - req->msg.code, - req->msg.subcode); - - hclge_gen_resp_to_vf(vport, req, &resp_msg); - } + param.vport = &hdev->vport[req->mbx_src_vfid]; + param.req = req; + hclge_mbx_request_handling(&param);

crq->desc[crq->next_to_use].flag = 0; hclge_mbx_ring_ptr_move_crq(crq); - - /* reinitialize ret after complete the mbx message processing */ - ret = 0; }

/* Write back CMDQ_RQ header pointer, M7 need this pointer */