diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2014-11-04 16:06:50 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-05 21:50:12 -0500 |
| commit | 174fd2597b0bd8c19fce6a97e8b0f753ef4ce7cb (patch) | |
| tree | 0770a468c71da5dcaa7353537f822584df34907e /drivers/net/ethernet/amd/xgbe/xgbe.h | |
| parent | 08dcc47c06c79de31b9b2c0b4637f6119e5701fa (diff) | |
amd-xgbe: Implement split header receive support
Provide support for splitting IP packets so that the header and
payload can be sent to different DMA addresses. This will allow
the IP header to be put into the linear part of the skb while the
payload can be added as frags.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe.h')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe.h | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index d3aa05501ee8..1480c9d41821 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -143,6 +143,7 @@ #define XGBE_RX_MIN_BUF_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN) #define XGBE_RX_BUF_ALIGN 64 #define XGBE_SKB_ALLOC_SIZE 256 +#define XGBE_SPH_HDSMS_SIZE 2 /* Keep in sync with SKB_ALLOC_SIZE */ #define XGBE_MAX_DMA_CHANNELS 16 #define XGBE_MAX_QUEUES 16 @@ -250,6 +251,15 @@ struct xgbe_page_alloc { dma_addr_t pages_dma; }; +/* Ring entry buffer data */ +struct xgbe_buffer_data { + struct xgbe_page_alloc pa; + struct xgbe_page_alloc pa_unmap; + + dma_addr_t dma; + unsigned int dma_len; +}; + /* Structure used to hold information related to the descriptor * and the packet associated with the descriptor (always use * use the XGBE_GET_DESC_DATA macro to access this data from the ring) @@ -263,12 +273,10 @@ struct xgbe_ring_data { unsigned int skb_dma_len; /* Length of SKB DMA area */ unsigned int tso_header; /* TSO header indicator */ - struct xgbe_page_alloc rx_pa; /* Rx buffer page allocation */ - struct xgbe_page_alloc rx_unmap; - - dma_addr_t rx_dma; /* DMA address of Rx buffer */ - unsigned int rx_dma_len; /* Length of the Rx DMA buffer */ + struct xgbe_buffer_data rx_hdr; /* Header locations */ + struct xgbe_buffer_data rx_buf; /* Payload locations */ + unsigned short hdr_len; /* Length of received header */ unsigned short len; /* Length of received Rx packet */ unsigned int interrupt; /* Interrupt indicator */ @@ -308,7 +316,8 @@ struct xgbe_ring { struct xgbe_ring_data *rdata; /* Page allocation for RX buffers */ - struct xgbe_page_alloc rx_pa; + struct xgbe_page_alloc rx_hdr_pa; + struct xgbe_page_alloc rx_buf_pa; /* Ring index values * cur - Tx: index of descriptor to be used for current transfer |