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net: macb: Handle HRESP error

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Handle HRESP error by doing a SW reset of RX and TX and
re-initializing the descriptors, RX and TX queue pointers.

Signed-off-by: Harini Katakam <harinik@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Harini Katakam
2018-01-27 12:09:01 +05:30
committed by David S. Miller
parent 468330e886
commit 032dc41ba6
2 changed files with 58 additions and 4 deletions
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3
drivers/net/ethernet/cadence/macb.h
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@@ -13,6 +13,7 @@
#include <linux/phy.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/net_tstamp.h>
#include <linux/interrupt.h>
#if defined(CONFIG_ARCH_DMA_ADDR_T_64BIT) || defined(CONFIG_MACB_USE_HWSTAMP)
#define MACB_EXT_DESC
@@ -1200,6 +1201,8 @@ struct macb {
struct ethtool_rx_fs_list rx_fs_list;
spinlock_t rx_fs_lock;
unsigned int max_tuples;
struct tasklet_struct hresp_err_tasklet;
};
#ifdef CONFIG_MACB_USE_HWSTAMP