qede: Add get/set rx copy break tunable support
Signed-off-by: Manish <manish.chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index 677213e..4e3f1a0 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -143,6 +143,8 @@
struct mutex qede_lock;
u32 state; /* Protected by qede_lock */
u16 rx_buf_size;
+ u32 rx_copybreak;
+
/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
#define ETH_OVERHEAD (ETH_HLEN + 8 + 8)
/* Max supported alignment is 256 (8 shift)
@@ -333,6 +335,7 @@
#define NUM_TX_BDS_MIN 128
#define NUM_TX_BDS_DEF NUM_TX_BDS_MAX
+#define QEDE_MIN_PKT_LEN 64
#define QEDE_RX_HDR_SIZE 256
#define for_each_rss(i) for (i = 0; i < edev->num_rss; i++)
diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index 85633cf..f8492ca 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -1185,6 +1185,48 @@
}
}
+static int qede_set_tunable(struct net_device *dev,
+ const struct ethtool_tunable *tuna,
+ const void *data)
+{
+ struct qede_dev *edev = netdev_priv(dev);
+ u32 val;
+
+ switch (tuna->id) {
+ case ETHTOOL_RX_COPYBREAK:
+ val = *(u32 *)data;
+ if (val < QEDE_MIN_PKT_LEN || val > QEDE_RX_HDR_SIZE) {
+ DP_VERBOSE(edev, QED_MSG_DEBUG,
+ "Invalid rx copy break value, range is [%u, %u]",
+ QEDE_MIN_PKT_LEN, QEDE_RX_HDR_SIZE);
+ return -EINVAL;
+ }
+
+ edev->rx_copybreak = *(u32 *)data;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int qede_get_tunable(struct net_device *dev,
+ const struct ethtool_tunable *tuna, void *data)
+{
+ struct qede_dev *edev = netdev_priv(dev);
+
+ switch (tuna->id) {
+ case ETHTOOL_RX_COPYBREAK:
+ *(u32 *)data = edev->rx_copybreak;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
static const struct ethtool_ops qede_ethtool_ops = {
.get_settings = qede_get_settings,
.set_settings = qede_set_settings,
@@ -1213,6 +1255,8 @@
.get_channels = qede_get_channels,
.set_channels = qede_set_channels,
.self_test = qede_self_test,
+ .get_tunable = qede_get_tunable,
+ .set_tunable = qede_set_tunable,
};
static const struct ethtool_ops qede_vf_ethtool_ops = {
@@ -1235,6 +1279,8 @@
.set_rxfh = qede_set_rxfh,
.get_channels = qede_get_channels,
.set_channels = qede_set_channels,
+ .get_tunable = qede_get_tunable,
+ .set_tunable = qede_set_tunable,
};
void qede_set_ethtool_ops(struct net_device *dev)
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index ea2df14..91e7bb0 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -1474,7 +1474,7 @@
}
/* Copy data into SKB */
- if (len + pad <= QEDE_RX_HDR_SIZE) {
+ if (len + pad <= edev->rx_copybreak) {
memcpy(skb_put(skb, len),
page_address(data) + pad +
sw_rx_data->page_offset, len);
@@ -2519,6 +2519,7 @@
INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
mutex_init(&edev->qede_lock);
+ edev->rx_copybreak = QEDE_RX_HDR_SIZE;
DP_INFO(edev, "Ending successfully qede probe\n");