net/mlx4_en: Add RX-ALL support
Enabled when the device supports KEEP FCS and IGNORE FCS.
When the flag is set, pass all received frames up the stack,
even ones with invalid FCS, controlled by ethtool.
Signed-off-by: Muhammad Mahajna <muhammadm@mellanox.com>
Signed-off-by: Ido Shamay <idos@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 333af34..0f1afc0 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -2204,6 +2204,17 @@
reset = true;
}
+ if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
+ u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
+
+ en_info(priv, "Turn %s RX-ALL\n",
+ ignore_fcs_value ? "ON" : "OFF");
+ ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
+ priv->port, ignore_fcs_value);
+ if (ret)
+ return ret;
+ }
+
if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
en_info(priv, "Turn %s RX vlan strip offload\n",
(features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
@@ -2914,6 +2925,9 @@
if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
dev->hw_features |= NETIF_F_RXFCS;
+ if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
+ dev->hw_features |= NETIF_F_RXALL;
+
if (mdev->dev->caps.steering_mode ==
MLX4_STEERING_MODE_DEVICE_MANAGED &&
mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 6317844..b9881fc 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -151,6 +151,7 @@
[25] = "Granular QoS per VF support",
[26] = "Port ETS Scheduler support",
[27] = "Port beacon support",
+ [28] = "RX-ALL support",
};
int i;
@@ -893,6 +894,8 @@
MLX4_GET(field, outbox, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
if (field & 0x20)
dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_CONFIG_DEV;
+ if (field & (1 << 2))
+ dev_cap->flags2 |= MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
MLX4_GET(dev_cap->reserved_lkey, outbox,
QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
MLX4_GET(field32, outbox, QUERY_DEV_CAP_ETH_BACKPL_OFFSET);
@@ -1220,6 +1223,11 @@
field &= 0xef;
MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_EQ_CACHE_LINE_STRIDE);
+ /* turn off ignore FCS feature for guests */
+ MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
+ field &= 0xfb;
+ MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CONFIG_DEV_OFFSET);
+
return 0;
}
diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 3becad3..acceb75 100644
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -297,6 +297,25 @@
return err;
}
+static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev)
+{
+ if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS))
+ return;
+
+ if (mlx4_is_mfunc(dev)) {
+ mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS");
+ dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
+ return;
+ }
+
+ if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) {
+ mlx4_dbg(dev,
+ "Keep FCS is not supported - Disabling Ignore FCS");
+ dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS;
+ return;
+ }
+}
+
#define MLX4_A0_STEERING_TABLE_SIZE 256
static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
{
@@ -540,6 +559,8 @@
dev->caps.alloc_res_qp_mask = 0;
}
+ mlx4_enable_ignore_fcs(dev);
+
return 0;
}
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
index 32469c6..f30eeb7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h
@@ -763,9 +763,11 @@
struct mlx4_set_port_general_context {
- u8 reserved[3];
+ u16 reserved1;
+ u8 v_ignore_fcs;
u8 flags;
- u16 reserved2;
+ u8 ignore_fcs;
+ u8 reserved2;
__be16 mtu;
u8 pptx;
u8 pfctx;
diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c
index e8d716d..c2b2131 100644
--- a/drivers/net/ethernet/mellanox/mlx4/port.c
+++ b/drivers/net/ethernet/mellanox/mlx4/port.c
@@ -45,6 +45,14 @@
#define MLX4_VLAN_VALID (1u << 31)
#define MLX4_VLAN_MASK 0xfff
+#define MLX4_STATS_TRAFFIC_COUNTERS_MASK 0xfULL
+#define MLX4_STATS_TRAFFIC_DROPS_MASK 0xc0ULL
+#define MLX4_STATS_ERROR_COUNTERS_MASK 0x1ffc30ULL
+#define MLX4_STATS_PORT_COUNTERS_MASK 0x1fe00000ULL
+
+#define MLX4_FLAG_V_IGNORE_FCS_MASK 0x2
+#define MLX4_IGNORE_FCS_MASK 0x1
+
void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
{
int i;
@@ -1027,6 +1035,32 @@
}
EXPORT_SYMBOL(mlx4_SET_PORT_qpn_calc);
+int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port, u8 ignore_fcs_value)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ struct mlx4_set_port_general_context *context;
+ u32 in_mod;
+ int err;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+ context = mailbox->buf;
+ context->v_ignore_fcs |= MLX4_FLAG_V_IGNORE_FCS_MASK;
+ if (ignore_fcs_value)
+ context->ignore_fcs |= MLX4_IGNORE_FCS_MASK;
+ else
+ context->ignore_fcs &= ~MLX4_IGNORE_FCS_MASK;
+
+ in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
+ err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+ MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+EXPORT_SYMBOL(mlx4_SET_PORT_fcs_check);
+
enum {
VXLAN_ENABLE_MODIFY = 1 << 7,
VXLAN_STEERING_MODIFY = 1 << 6,
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index b761be7..f9ce34b 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -209,6 +209,7 @@
MLX4_DEV_CAP_FLAG2_QOS_VPP = 1LL << 25,
MLX4_DEV_CAP_FLAG2_ETS_CFG = 1LL << 26,
MLX4_DEV_CAP_FLAG2_PORT_BEACON = 1LL << 27,
+ MLX4_DEV_CAP_FLAG2_IGNORE_FCS = 1LL << 28,
};
enum {
@@ -1313,6 +1314,8 @@
int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
u8 promisc);
int mlx4_SET_PORT_BEACON(struct mlx4_dev *dev, u8 port, u16 time);
+int mlx4_SET_PORT_fcs_check(struct mlx4_dev *dev, u8 port,
+ u8 ignore_fcs_value);
int mlx4_SET_PORT_VXLAN(struct mlx4_dev *dev, u8 port, u8 steering, int enable);
int mlx4_find_cached_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *idx);
int mlx4_find_cached_vlan(struct mlx4_dev *dev, u8 port, u16 vid, int *idx);