diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2013-01-09 03:43:19 +0400 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2013-08-29 21:12:14 +0400 |
| commit | ba8977bdb20d7ae72ec6fddc1c081ca2d56852cb (patch) | |
| tree | 21b65914a3de92f9e69327ce1f7891fa8f39e0f7 /drivers/net/ethernet/sfc/net_driver.h | |
| parent | 3881d8ab065b23bb07400aa820e737d80fdaced3 (diff) | |
| download | linux-ba8977bdb20d7ae72ec6fddc1c081ca2d56852cb.tar.xz | |
sfc: Extend struct efx_tx_buffer to allow pushing option descriptors
The TX path firmware for EF10 supports 'option descriptors' to control
offloads and various other features. Add a flag and field for these
in struct efx_tx_buffer, and don't treat them as DMA descriptors on
completion.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index c9b6f2dcb539..d1aa5dcec963 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -135,6 +135,7 @@ struct efx_special_buffer { * freed when descriptor completes * @heap_buf: When @flags & %EFX_TX_BUF_HEAP, the associated heap buffer to be * freed when descriptor completes. + * @option: When @flags & %EFX_TX_BUF_OPTION, a NIC-specific option descriptor. * @dma_addr: DMA address of the fragment. * @flags: Flags for allocation and DMA mapping type * @len: Length of this fragment. @@ -146,7 +147,10 @@ struct efx_tx_buffer { const struct sk_buff *skb; void *heap_buf; }; - dma_addr_t dma_addr; + union { + efx_qword_t option; + dma_addr_t dma_addr; + }; unsigned short flags; unsigned short len; unsigned short unmap_len; @@ -155,6 +159,7 @@ struct efx_tx_buffer { #define EFX_TX_BUF_SKB 2 /* buffer is last part of skb */ #define EFX_TX_BUF_HEAP 4 /* buffer was allocated with kmalloc() */ #define EFX_TX_BUF_MAP_SINGLE 8 /* buffer was mapped with dma_map_single() */ +#define EFX_TX_BUF_OPTION 0x10 /* empty buffer for option descriptor */ /** * struct efx_tx_queue - An Efx TX queue |