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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

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Conflicts:
	net/core/rtnetlink.c
	net/core/skbuff.c

Both conflicts were very simple overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2014-06-11 16:02:55 -07:00
parent 39f33367e4 c5b4616087
commit 902455e007
15 changed files with 66 additions and 27 deletions
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7
drivers/net/ethernet/sfc/io.h
View File

@@ -66,10 +66,17 @@
#define EFX_USE_QWORD_IO 1
#endif
/* Hardware issue requires that only 64-bit naturally aligned writes
* are seen by hardware. Its not strictly necessary to restrict to
* x86_64 arch, but done for safety since unusual write combining behaviour
* can break PIO.
*/
#ifdef CONFIG_X86_64
/* PIO is a win only if write-combining is possible */
#ifdef ARCH_HAS_IOREMAP_WC
#define EFX_USE_PIO 1
#endif
#endif
#ifdef EFX_USE_QWORD_IO
static inline void _efx_writeq(struct efx_nic *efx, __le64 value,

22
drivers/net/ethernet/sfc/tx.c
View File

@@ -189,6 +189,18 @@ struct efx_short_copy_buffer {
u8 buf[L1_CACHE_BYTES];
};
/* Copy in explicit 64-bit writes. */
static void efx_memcpy_64(void __iomem *dest, void *src, size_t len)
{
u64 *src64 = src;
u64 __iomem *dest64 = dest;
size_t l64 = len / 8;
size_t i;
for (i = 0; i < l64; i++)
writeq(src64[i], &dest64[i]);
}
/* Copy to PIO, respecting that writes to PIO buffers must be dword aligned.
* Advances piobuf pointer. Leaves additional data in the copy buffer.
*/
@@ -198,7 +210,7 @@ static void efx_memcpy_toio_aligned(struct efx_nic *efx, u8 __iomem **piobuf,
{
int block_len = len & ~(sizeof(copy_buf->buf) - 1);
memcpy_toio(*piobuf, data, block_len);
efx_memcpy_64(*piobuf, data, block_len);
*piobuf += block_len;
len -= block_len;
@@ -230,7 +242,7 @@ static void efx_memcpy_toio_aligned_cb(struct efx_nic *efx, u8 __iomem **piobuf,
if (copy_buf->used < sizeof(copy_buf->buf))
return;
memcpy_toio(*piobuf, copy_buf->buf, sizeof(copy_buf->buf));
efx_memcpy_64(*piobuf, copy_buf->buf, sizeof(copy_buf->buf));
*piobuf += sizeof(copy_buf->buf);
data += copy_to_buf;
len -= copy_to_buf;
@@ -245,7 +257,7 @@ static void efx_flush_copy_buffer(struct efx_nic *efx, u8 __iomem *piobuf,
{
/* if there's anything in it, write the whole buffer, including junk */
if (copy_buf->used)
memcpy_toio(piobuf, copy_buf->buf, sizeof(copy_buf->buf));
efx_memcpy_64(piobuf, copy_buf->buf, sizeof(copy_buf->buf));
}
/* Traverse skb structure and copy fragments in to PIO buffer.
@@ -304,8 +316,8 @@ efx_enqueue_skb_pio(struct efx_tx_queue *tx_queue, struct sk_buff *skb)
*/
BUILD_BUG_ON(L1_CACHE_BYTES >
SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
memcpy_toio(tx_queue->piobuf, skb->data,
ALIGN(skb->len, L1_CACHE_BYTES));
efx_memcpy_64(tx_queue->piobuf, skb->data,
ALIGN(skb->len, L1_CACHE_BYTES));
}
EFX_POPULATE_QWORD_5(buffer->option,