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| author |   Ben Hutchings <bhutchings@solarflare.com> | 2013-01-29 23:33:15 +0000 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2013-03-07 20:22:11 +0000 |
| commit | b74e3e8cd6f952faf8797fca81a5a2ceace6b9aa (patch) | |
| tree | 45d6011a5a5c9d31eb0f3667a80a10e698fabe40 /drivers/net/ethernet/sfc/rx.c | |
| parent | sfc: Explicitly prefetch RX hash prefix, not just Ethernet heade (diff) | |
| download | linux-dev-b74e3e8cd6f952faf8797fca81a5a2ceace6b9aa.tar.xz linux-dev-b74e3e8cd6f952faf8797fca81a5a2ceace6b9aa.zip | |
sfc: Update RX buffer address together with length
Adjust rx_buf->page_offset when we eat the RX hash prefix. Remove
efx_rx_buf_offset(), which is now redundant.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/rx.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/rx.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c index 8e78a2fe7364..04518722ac1d 100644 --- a/drivers/net/ethernet/sfc/rx.c +++ b/drivers/net/ethernet/sfc/rx.c @@ -47,13 +47,6 @@ static unsigned int rx_refill_threshold; */ #define EFX_RXD_HEAD_ROOM 2 -/* Offset of ethernet header within page */ -static inline unsigned int efx_rx_buf_offset(struct efx_nic *efx, - struct efx_rx_buffer *buf) -{ - return buf->page_offset + efx->type->rx_buffer_hash_size; -} - static inline u8 *efx_rx_buf_va(struct efx_rx_buffer *buf) { return page_address(buf->page) + buf->page_offset; @@ -356,8 +349,7 @@ static void efx_rx_packet_gro(struct efx_channel *channel, if (efx->net_dev->features & NETIF_F_RXHASH) skb->rxhash = efx_rx_buf_hash(eh); - skb_fill_page_desc(skb, 0, page, - efx_rx_buf_offset(efx, rx_buf), rx_buf->len); + skb_fill_page_desc(skb, 0, page, rx_buf->page_offset, rx_buf->len); skb->len = rx_buf->len; skb->data_len = rx_buf->len; @@ -399,7 +391,7 @@ static struct sk_buff *efx_rx_mk_skb(struct efx_channel *channel, if (rx_buf->len > hdr_len) { skb->data_len = skb->len - hdr_len; skb_fill_page_desc(skb, 0, rx_buf->page, - efx_rx_buf_offset(efx, rx_buf) + hdr_len, + rx_buf->page_offset + hdr_len, skb->data_len); } else { __free_pages(rx_buf->page, efx->rx_buffer_order); @@ -460,10 +452,12 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, */ prefetch(efx_rx_buf_va(rx_buf)); + rx_buf->page_offset += efx->type->rx_buffer_hash_size; + rx_buf->len = len - efx->type->rx_buffer_hash_size; + /* Pipeline receives so that we give time for packet headers to be * prefetched into cache. */ - rx_buf->len = len - efx->type->rx_buffer_hash_size; out: efx_rx_flush_packet(channel); channel->rx_pkt = rx_buf; @@ -497,7 +491,7 @@ static void efx_rx_deliver(struct efx_channel *channel, u8 *eh, void __efx_rx_packet(struct efx_channel *channel, struct efx_rx_buffer *rx_buf) { struct efx_nic *efx = channel->efx; - u8 *eh = efx_rx_buf_va(rx_buf) + efx->type->rx_buffer_hash_size; + u8 *eh = efx_rx_buf_va(rx_buf); /* If we're in loopback test, then pass the packet directly to the * loopback layer, and free the rx_buf here |