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amd-xgbe: Add ethtool show/set ring parameter support

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Add ethtool support to show and set the number of the Rx and Tx ring
descriptors.  Changing the ring configuration will result in a device
restart.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Lendacky
2018-05-23 11:38:56 -05:00
committed by David S. Miller
parent 53a1024abf
commit bab748de98
3 changed files with 72 additions and 5 deletions
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6
drivers/net/ethernet/amd/xgbe/xgbe.h
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@@ -144,6 +144,11 @@
#define XGBE_TX_DESC_MAX_PROC (XGBE_TX_DESC_CNT >> 1)
#define XGBE_RX_DESC_CNT 512
#define XGBE_TX_DESC_CNT_MIN 64
#define XGBE_TX_DESC_CNT_MAX 4096
#define XGBE_RX_DESC_CNT_MIN 64
#define XGBE_RX_DESC_CNT_MAX 4096
#define XGBE_TX_MAX_BUF_SIZE (0x3fff & ~(64 - 1))
/* Descriptors required for maximum contiguous TSO/GSO packet */
@@ -1330,6 +1335,7 @@ int xgbe_powerup(struct net_device *, unsigned int);
int xgbe_powerdown(struct net_device *, unsigned int);
void xgbe_init_rx_coalesce(struct xgbe_prv_data *);
void xgbe_init_tx_coalesce(struct xgbe_prv_data *);
void xgbe_restart_dev(struct xgbe_prv_data *pdata);
#ifdef CONFIG_DEBUG_FS
void xgbe_debugfs_init(struct xgbe_prv_data *);