iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

sfc: RX buffer allocation takes prefix size into account in IP header alignment

Browse Source 
rx_prefix_size is 4-bytes aligned on Falcon/Siena (16 bytes), but it is equal
to 14 on EF10. So, it should be taken into account if arch requires IP header
to be 4-bytes aligned (via NET_IP_ALIGN).

Fixes: 8127d661e7 ('sfc: Add support for Solarflare SFC9100 family')
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
This commit is contained in:
Andrew Rybchenko
2013-11-16 11:02:27 +04:00
committed by Ben Hutchings
parent cd6fe65e92
commit 2ec030144f
3 changed files with 9 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/sfc/net_driver.h
View File

@ -683,6 +683,8 @@ struct vfdi_status;
* @n_channels: Number of channels in use
* @n_rx_channels: Number of channels used for RX (= number of RX queues)
* @n_tx_channels: Number of channels used for TX
* @rx_ip_align: RX DMA address offset to have IP header aligned in
* in accordance with NET_IP_ALIGN
* @rx_dma_len: Current maximum RX DMA length
* @rx_buffer_order: Order (log2) of number of pages for each RX buffer
* @rx_buffer_truesize: Amortised allocation size of an RX buffer,
@ -816,6 +818,7 @@ struct efx_nic {
unsigned rss_spread;
unsigned tx_channel_offset;
unsigned n_tx_channels;
unsigned int rx_ip_align;
unsigned int rx_dma_len;
unsigned int rx_buffer_order;
unsigned int rx_buffer_truesize;