Author: kib
Date: Mon Aug 31 16:27:03 2020
New Revision: 365001
URL: https://svnweb.freebsd.org/changeset/base/365001

Log:
  mlx5en: Implement SIOCGIFDOWNREASON.
  
  Sponsored by: Mellanox Technologies - Nvidia
  MFC after:    1 week

Modified:
  head/sys/dev/mlx5/mlx5_core/mlx5_core.h
  head/sys/dev/mlx5/mlx5_core/mlx5_port.c
  head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c

Modified: head/sys/dev/mlx5/mlx5_core/mlx5_core.h
==============================================================================
--- head/sys/dev/mlx5/mlx5_core/mlx5_core.h     Mon Aug 31 16:25:55 2020        
(r365000)
+++ head/sys/dev/mlx5/mlx5_core/mlx5_core.h     Mon Aug 31 16:27:03 2020        
(r365001)
@@ -127,6 +127,9 @@ void mlx5_core_event(struct mlx5_core_dev *dev, enum m
 void mlx5_enter_error_state(struct mlx5_core_dev *dev, bool force);
 void mlx5_disable_device(struct mlx5_core_dev *dev);
 void mlx5_recover_device(struct mlx5_core_dev *dev);
+int mlx5_query_pddr_troubleshooting_info(struct mlx5_core_dev *mdev,
+                                        u16 *monitor_opcode,
+                                        u8 *status_message, size_t sm_len);
 
 int mlx5_register_device(struct mlx5_core_dev *dev);
 void mlx5_unregister_device(struct mlx5_core_dev *dev);

Modified: head/sys/dev/mlx5/mlx5_core/mlx5_port.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_core/mlx5_port.c     Mon Aug 31 16:25:55 2020        
(r365000)
+++ head/sys/dev/mlx5/mlx5_core/mlx5_port.c     Mon Aug 31 16:27:03 2020        
(r365001)
@@ -1221,6 +1221,31 @@ int mlx5_query_pddr_range_info(struct mlx5_core_dev *m
 }
 EXPORT_SYMBOL_GPL(mlx5_query_pddr_range_info);
 
+int mlx5_query_pddr_troubleshooting_info(struct mlx5_core_dev *mdev,
+    u16 *monitor_opcode, u8 *status_message, size_t sm_len)
+{
+       int outlen = MLX5_ST_SZ_BYTES(pddr_reg);
+       u32 out[MLX5_ST_SZ_DW(pddr_reg)] = {0};
+       int err;
+
+       err = mlx5_query_pddr(mdev, MLX5_PDDR_TROUBLESHOOTING_INFO_PAGE, 1,
+           out, outlen);
+       if (err != 0)
+               return err;
+       if (monitor_opcode != NULL) {
+               *monitor_opcode = MLX5_GET(pddr_reg, out,
+                   page_data.troubleshooting_info_page.status_opcode.
+                   monitor_opcodes);
+       }
+       if (status_message != NULL) {
+               strlcpy(status_message,
+                   MLX5_ADDR_OF(pddr_reg, out,
+                   page_data.troubleshooting_info_page.status_message),
+                   sm_len);
+       }
+       return (0);
+}
+
 int
 mlx5_query_mfrl_reg(struct mlx5_core_dev *mdev, u8 *reset_level)
 {

Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c    Mon Aug 31 16:25:55 2020        
(r365000)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c    Mon Aug 31 16:27:03 2020        
(r365001)
@@ -3233,6 +3233,7 @@ mlx5e_ioctl(struct ifnet *ifp, u_long command, caddr_t
 {
        struct mlx5e_priv *priv;
        struct ifreq *ifr;
+       struct ifdownreason *ifdr;
        struct ifi2creq i2c;
        int error = 0;
        int mask = 0;
@@ -3500,6 +3501,16 @@ out:
                error = copyout(&i2c, ifr_data_get_ptr(ifr), sizeof(i2c));
 err_i2c:
                PRIV_UNLOCK(priv);
+               break;
+       case SIOCGIFDOWNREASON:
+               ifdr = (struct ifdownreason *)data;
+               bzero(ifdr->ifdr_msg, sizeof(ifdr->ifdr_msg));
+               PRIV_LOCK(priv);
+               error = -mlx5_query_pddr_troubleshooting_info(priv->mdev, NULL,
+                   ifdr->ifdr_msg, sizeof(ifdr->ifdr_msg));
+               PRIV_UNLOCK(priv);
+               if (error == 0)
+                       ifdr->ifdr_reason = IFDR_REASON_MSG;
                break;
 
        default:
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