[PATCH net-next v4 6/8] octeon_ep: support asynchronous notifications

Veerasenareddy Burru
2023-03-22T09:20:35Z

Add asynchronous notification support to the control mailbox.

Signed-off-by: Veerasenareddy Burru <vburru@marvell.com>
Signed-off-by: Abhijit Ayarekar <aayarekar@marvell.com>
---
v3 -> v4:
* 0005-xxx.patch in v3 is 0006-xxx.patch in v4.
* addressed review comments
https://lore.kernel.org/all/Y+0J94sowllCe5Gs@boxer/
- fixed rct violation.
- process_mbox_notify() now returns void.

v2 -> v3:
* no change

v1 -> v2:
* no change

.../marvell/octeon_ep/octep_ctrl_net.c | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)

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 cef4bc3b1ec0..465eef2824e3 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
@@ -271,6 +271,33 @@ static void process_mbox_resp(struct octep_device *oct,
}
}

+static int process_mbox_notify(struct octep_device *oct,
+ struct octep_ctrl_mbox_msg *msg)
+{
+ struct net_device *netdev = oct->netdev;
+ struct octep_ctrl_net_f2h_req *req;
+
+ req = (struct octep_ctrl_net_f2h_req *)msg->sg_list[0].msg;
+ switch (req->hdr.s.cmd) {
+ case OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS:
+ if (netif_running(netdev)) {
+ if (req->link.state) {
+ dev_info(&oct->pdev->dev, "netif_carrier_on\n");
+ netif_carrier_on(netdev);
+ } else {
+ dev_info(&oct->pdev->dev, "netif_carrier_off\n");
+ netif_carrier_off(netdev);
+ }
+ }
+ break;
+ default:
+ pr_info("Unknown mbox req : %u\n", req->hdr.s.cmd);
+ break;
+ }
+
+ return 0;
+}
+
void octep_ctrl_net_recv_fw_messages(struct octep_device *oct)
{
static u16 msg_sz = sizeof(union octep_ctrl_net_max_data);
@@ -291,6 +318,8 @@ void octep_ctrl_net_recv_fw_messages(struct octep_device *oct)

if (msg.hdr.s.flags & OCTEP_CTRL_MBOX_MSG_HDR_FLAG_RESP)
process_mbox_resp(oct, &msg);
+ else if (msg.hdr.s.flags & OCTEP_CTRL_MBOX_MSG_HDR_FLAG_NOTIFY)
+ process_mbox_notify(oct, &msg);
}
}

--
2.36.0