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| author | Tirthendu Sarkar <tirthendu.sarkar@intel.com> | 2022-12-09 10:55:53 -0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-12-12 15:24:47 -0800 |
| commit | b1746fbab15a1d6d5e61846f260f8fece1fca576 (patch) | |
| tree | ccde0c9402bf8650e949a51f03b5d14e1ed599b9 /drivers/net/ethernet/intel/i40e/i40e_common.c | |
| parent | 2a78dd22c2eba50cba8254d4166481791ed884bc (diff) | |
| download | linux-stable-b1746fbab15a1d6d5e61846f260f8fece1fca576.tar.gz linux-stable-b1746fbab15a1d6d5e61846f260f8fece1fca576.tar.bz2 linux-stable-b1746fbab15a1d6d5e61846f260f8fece1fca576.zip | |
i40e: allow toggling loopback mode via ndo_set_features callback
Add support for NETIF_F_LOOPBACK. This feature can be set via:
$ ethtool -K eth0 loopback <on|off>
This sets the MAC Tx->Rx loopback.
This feature is used for the xsk selftests, and might have other uses
too.
Signed-off-by: Tirthendu Sarkar <tirthendu.sarkar@intel.com>
Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Tested-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20221209185553.2520088-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_common.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c index 4f01e2a6b6bb..8f764ff5c990 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_common.c +++ b/drivers/net/ethernet/intel/i40e/i40e_common.c @@ -1831,6 +1831,32 @@ i40e_status i40e_aq_set_phy_int_mask(struct i40e_hw *hw, } /** + * i40e_aq_set_mac_loopback + * @hw: pointer to the HW struct + * @ena_lpbk: Enable or Disable loopback + * @cmd_details: pointer to command details structure or NULL + * + * Enable/disable loopback on a given port + */ +i40e_status i40e_aq_set_mac_loopback(struct i40e_hw *hw, bool ena_lpbk, + struct i40e_asq_cmd_details *cmd_details) +{ + struct i40e_aq_desc desc; + struct i40e_aqc_set_lb_mode *cmd = + (struct i40e_aqc_set_lb_mode *)&desc.params.raw; + + i40e_fill_default_direct_cmd_desc(&desc, i40e_aqc_opc_set_lb_modes); + if (ena_lpbk) { + if (hw->nvm.version <= I40E_LEGACY_LOOPBACK_NVM_VER) + cmd->lb_mode = cpu_to_le16(I40E_AQ_LB_MAC_LOCAL_LEGACY); + else + cmd->lb_mode = cpu_to_le16(I40E_AQ_LB_MAC_LOCAL); + } + + return i40e_asq_send_command(hw, &desc, NULL, 0, cmd_details); +} + +/** * i40e_aq_set_phy_debug * @hw: pointer to the hw struct * @cmd_flags: debug command flags |