diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2014-11-05 01:06:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-06 05:50:12 +0300 |
| commit | 08dcc47c06c79de31b9b2c0b4637f6119e5701fa (patch) | |
| tree | 55a56cf66275b02c33afb6e4a2d2296b3d1450d8 /drivers/net/ethernet/amd/xgbe/xgbe.h | |
| parent | aa96bd3c9fda52b9f57128798b49d662e5d4659c (diff) | |
| download | linux-08dcc47c06c79de31b9b2c0b4637f6119e5701fa.tar.xz | |
amd-xgbe: Use page allocations for Rx buffers
Use page allocations for Rx buffers instead of pre-allocating skbs
of a set size.
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 | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 19f1d9007a6d..d3aa05501ee8 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -142,6 +142,7 @@ #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_MAX_DMA_CHANNELS 16 #define XGBE_MAX_QUEUES 16 @@ -240,6 +241,15 @@ struct xgbe_ring_desc { u32 desc3; }; +/* Page allocation related values */ +struct xgbe_page_alloc { + struct page *pages; + unsigned int pages_len; + unsigned int pages_offset; + + dma_addr_t pages_dma; +}; + /* 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) @@ -253,6 +263,12 @@ 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 */ + unsigned short len; /* Length of received Rx packet */ unsigned int interrupt; /* Interrupt indicator */ @@ -291,6 +307,9 @@ struct xgbe_ring { */ struct xgbe_ring_data *rdata; + /* Page allocation for RX buffers */ + struct xgbe_page_alloc rx_pa; + /* Ring index values * cur - Tx: index of descriptor to be used for current transfer * Rx: index of descriptor to check for packet availability @@ -515,8 +534,8 @@ struct xgbe_desc_if { int (*alloc_ring_resources)(struct xgbe_prv_data *); void (*free_ring_resources)(struct xgbe_prv_data *); int (*map_tx_skb)(struct xgbe_channel *, struct sk_buff *); - void (*realloc_skb)(struct xgbe_channel *); - void (*unmap_skb)(struct xgbe_prv_data *, struct xgbe_ring_data *); + void (*realloc_rx_buffer)(struct xgbe_channel *); + void (*unmap_rdata)(struct xgbe_prv_data *, struct xgbe_ring_data *); void (*wrapper_tx_desc_init)(struct xgbe_prv_data *); void (*wrapper_rx_desc_init)(struct xgbe_prv_data *); }; @@ -624,7 +643,7 @@ struct xgbe_prv_data { unsigned int rx_riwt; unsigned int rx_frames; - /* Current MTU */ + /* Current Rx buffer size */ unsigned int rx_buf_size; /* Flow control settings */ |