diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2014-11-20 11:04:08 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-21 15:19:11 -0500 |
| commit | 16958a2b05def4ed214ae681b7ee4ce8537b00fb (patch) | |
| tree | 252e22443ecfa3b53e6439b228c4f44d875046fe /drivers/net/ethernet/amd/xgbe/xgbe.h | |
| parent | eb79e640fab1fc163e6f04e0cc007c76b6a46f28 (diff) | |
| download | lwn-16958a2b05def4ed214ae681b7ee4ce8537b00fb.tar.gz lwn-16958a2b05def4ed214ae681b7ee4ce8537b00fb.zip | |
amd-xgbe: Add support for the skb->xmit_more flag
Add support to delay telling the hardware about data that is ready to
be transmitted if the skb->xmit_more flag is set.
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 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index ec0d37a917ae..eb3387398c6f 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -140,6 +140,17 @@ #define XGBE_TX_MAX_BUF_SIZE (0x3fff & ~(64 - 1)) +/* Descriptors required for maximum contigous TSO/GSO packet */ +#define XGBE_TX_MAX_SPLIT ((GSO_MAX_SIZE / XGBE_TX_MAX_BUF_SIZE) + 1) + +/* Maximum possible descriptors needed for an SKB: + * - Maximum number of SKB frags + * - Maximum descriptors for contiguous TSO/GSO packet + * - Possible context descriptor + * - Possible TSO header descriptor + */ +#define XGBE_TX_MAX_DESCS (MAX_SKB_FRAGS + XGBE_TX_MAX_SPLIT + 2) + #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 @@ -225,6 +236,8 @@ struct xgbe_prv_data; struct xgbe_packet_data { + struct sk_buff *skb; + unsigned int attributes; unsigned int errors; @@ -360,6 +373,7 @@ struct xgbe_ring { union { struct { unsigned int queue_stopped; + unsigned int xmit_more; unsigned short cur_mss; unsigned short cur_vlan_ctag; } tx; @@ -523,6 +537,7 @@ struct xgbe_hw_if { void (*tx_desc_reset)(struct xgbe_ring_data *); int (*is_last_desc)(struct xgbe_ring_desc *); int (*is_context_desc)(struct xgbe_ring_desc *); + void (*tx_start_xmit)(struct xgbe_channel *, struct xgbe_ring *); /* For FLOW ctrl */ int (*config_tx_flow_control)(struct xgbe_prv_data *); |