Author: hselasky
Date: Fri Nov 10 14:19:22 2017
New Revision: 325661
URL: https://svnweb.freebsd.org/changeset/base/325661
Log:
Expose the current hardware MTU in mlx5en(4) as a separate entry
in the sysctl tree.
Sponsored by: Mellanox Technologies
MFC after: 1 week
Modified:
head/sys/dev/mlx5/mlx5_en/en.h
head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c
head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
Modified: head/sys/dev/mlx5/mlx5_en/en.h
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/en.h Fri Nov 10 14:14:54 2017
(r325660)
+++ head/sys/dev/mlx5/mlx5_en/en.h Fri Nov 10 14:19:22 2017
(r325661)
@@ -412,6 +412,7 @@ struct mlx5e_params {
m(+1, u64 modify_rx_dma, "modify_rx_dma", "0: Enable RX 1: Disable RX") \
m(+1, u64 diag_pci_enable, "diag_pci_enable", "0: Disabled 1: Enabled") \
m(+1, u64 diag_general_enable, "diag_general_enable", "0: Disabled 1:
Enabled") \
+ m(+1, u64 hw_mtu, "hw_mtu", "Current hardware MTU value") \
m(+1, u64 mc_local_lb, "mc_local_lb", "0: Local multicast loopback enabled
1: Disabled") \
m(+1, u64 uc_local_lb, "uc_local_lb", "0: Local unicast loopback enabled 1:
Disabled")
Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c Fri Nov 10 14:14:54 2017
(r325660)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c Fri Nov 10 14:19:22 2017
(r325661)
@@ -778,7 +778,8 @@ mlx5e_create_ethtool(struct mlx5e_priv *priv)
return;
for (x = 0; x != MLX5E_PARAMS_NUM; x++) {
/* check for read-only parameter */
- if (strstr(mlx5e_params_desc[2 * x], "_max") != NULL) {
+ if (strstr(mlx5e_params_desc[2 * x], "_max") != NULL ||
+ strstr(mlx5e_params_desc[2 * x], "_mtu") != NULL) {
SYSCTL_ADD_PROC(&priv->sysctl_ctx,
SYSCTL_CHILDREN(node), OID_AUTO,
mlx5e_params_desc[2 * x], CTLTYPE_U64 | CTLFLAG_RD |
CTLFLAG_MPSAFE, priv, x, &mlx5e_ethtool_handler,
"QU",
Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c
==============================================================================
--- head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Fri Nov 10 14:14:54 2017
(r325660)
+++ head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Fri Nov 10 14:19:22 2017
(r325661)
@@ -2298,10 +2298,13 @@ mlx5e_set_dev_port_mtu(struct ifnet *ifp, int sw_mtu)
__func__, sw_mtu, err);
return (err);
}
+
+ ifp->if_mtu = sw_mtu;
err = mlx5_query_port_oper_mtu(mdev, &hw_mtu);
if (err) {
if_printf(ifp, "Query port MTU, after setting new "
"MTU value, failed\n");
+ return (err);
} else if (MLX5E_HW2SW_MTU(hw_mtu) < sw_mtu) {
err = -E2BIG,
if_printf(ifp, "Port MTU %d is smaller than "
@@ -2311,7 +2314,8 @@ mlx5e_set_dev_port_mtu(struct ifnet *ifp, int sw_mtu)
if_printf(ifp, "Port MTU %d is bigger than "
"ifp mtu %d\n", hw_mtu, sw_mtu);
}
- ifp->if_mtu = sw_mtu;
+ priv->params_ethtool.hw_mtu = hw_mtu;
+
return (err);
}
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