octeon_ep: implement device unload control net API

Device unload control net function should inform firmware
of driver unload to let it take necessary actions to cleanup.

Signed-off-by: Shinas Rasheed <srasheed@marvell.com>
Link: https://lore.kernel.org/r/20231129045348.2538843-2-srasheed@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
index 5fa596c674da846f7783848e8fc6e27b360f5eda..4c39e2fabe0a5588b0de7e02b7f93a61cd089033 100644 (file)
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
@@ -26,7 +26,7 @@ static atomic_t ctrl_net_msg_id;
 
 /* Control plane version in which OCTEP_CTRL_NET_H2F_CMD was added */
 static const u32 octep_ctrl_net_h2f_cmd_versions[OCTEP_CTRL_NET_H2F_CMD_MAX] = {
-       [OCTEP_CTRL_NET_H2F_CMD_INVALID ... OCTEP_CTRL_NET_H2F_CMD_GET_INFO] =
+       [OCTEP_CTRL_NET_H2F_CMD_INVALID ... OCTEP_CTRL_NET_H2F_CMD_DEV_REMOVE] =
         OCTEP_CP_VERSION(1, 0, 0)
 };
 
@@ -393,10 +393,24 @@ int octep_ctrl_net_get_info(struct octep_device *oct, int vfid,
        return 0;
 }
 
+int octep_ctrl_net_dev_remove(struct octep_device *oct, int vfid)
+{
+       struct octep_ctrl_net_wait_data d = {};
+       struct octep_ctrl_net_h2f_req *req;
+
+       req = &d.data.req;
+       dev_dbg(&oct->pdev->dev, "Sending dev_unload msg to fw\n");
+       init_send_req(&d.msg, req, sizeof(int), vfid);
+       req->hdr.s.cmd = OCTEP_CTRL_NET_H2F_CMD_DEV_REMOVE;
+
+       return octep_send_mbox_req(oct, &d, false);
+}
 int octep_ctrl_net_uninit(struct octep_device *oct)
 {
        struct octep_ctrl_net_wait_data *pos, *n;
 
+       octep_ctrl_net_dev_remove(oct, OCTEP_CTRL_NET_INVALID_VFID);
+
        list_for_each_entry_safe(pos, n, &oct->ctrl_req_wait_list, list)
                pos->done = 1;
 

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h
index a2463b460ad9f35d2e65212a5dca2ec555715fa1..0de4de2ceb8fc8eef2219ddb31cd62ba7bb1ff1b 100644 (file)
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.h
@@ -42,6 +42,7 @@ enum octep_ctrl_net_h2f_cmd {
        OCTEP_CTRL_NET_H2F_CMD_RX_STATE,
        OCTEP_CTRL_NET_H2F_CMD_LINK_INFO,
        OCTEP_CTRL_NET_H2F_CMD_GET_INFO,
+       OCTEP_CTRL_NET_H2F_CMD_DEV_REMOVE,
        OCTEP_CTRL_NET_H2F_CMD_MAX
 };
 
@@ -370,6 +371,16 @@ void octep_ctrl_net_recv_fw_messages(struct octep_device *oct);
 int octep_ctrl_net_get_info(struct octep_device *oct, int vfid,
                            struct octep_fw_info *info);
 
+/**
+ * octep_ctrl_net_dev_remove() - Indicate to firmware that a device unload has happened.
+ *
+ * @oct: non-null pointer to struct octep_device.
+ * @vfid: Index of virtual function.
+ *
+ * return value: 0 on success, -errno on failure.
+ */
+int octep_ctrl_net_dev_remove(struct octep_device *oct, int vfid);
+
 /**
  * octep_ctrl_net_uninit() - Uninitialize data for ctrl net.
  *