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S2io: Multiqueue network device support - FIFO selection based on L4 ports

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- Resubmit #2
- Transmit fifo selection based on TCP/UDP ports.
- Added tx_steering_type loadable parameter for transmit fifo selection.
  0x0 NO_STEERING: Default FIFO is selected.
  0x1 TX_PRIORITY_STEERING: FIFO is selected based on skb->priority.
  0x2 TX_DEFAULT_STEERING: FIFO is selected based on L4 Ports.

Signed-off-by: Surjit Reang <surjit.reang@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Sreenivasa Honnur
2008-02-20 17:07:51 -05:00
committed by Jeff Garzik
parent 3a3d5756ac
commit 6cfc482b4b
2 changed files with 149 additions and 18 deletions
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34
drivers/net/s2io.h
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@@ -360,7 +360,10 @@ struct stat_block {
#define MAX_TX_FIFOS 8
#define MAX_RX_RINGS 8
#define FIFO_DEFAULT_NUM 1
#define FIFO_DEFAULT_NUM 5
#define FIFO_UDP_MAX_NUM 2 /* 0 - even, 1 -odd ports */
#define FIFO_OTHER_MAX_NUM 1
#define MAX_RX_DESC_1 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 127 )
#define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
@@ -379,6 +382,8 @@ static int fifo_map[][MAX_TX_FIFOS] = {
{0, 1, 2, 3, 4, 5, 6, 7},
};
static u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7};
/* Maintains Per FIFO related information. */
struct tx_fifo_config {
#define MAX_AVAILABLE_TXDS 8192
@@ -431,6 +436,12 @@ struct config_param {
/* Tx Side */
u32 tx_fifo_num; /*Number of Tx FIFOs */
/* 0-No steering, 1-Priority steering, 2-Default fifo map */
#define NO_STEERING 0
#define TX_PRIORITY_STEERING 0x1
#define TX_DEFAULT_STEERING 0x2
u8 tx_steering_type;
u8 fifo_mapping[MAX_TX_FIFOS];
struct tx_fifo_config tx_cfg[MAX_TX_FIFOS]; /*Per-Tx FIFO config */
u32 max_txds; /*Max no. of Tx buffer descriptor per TxDL */
@@ -895,6 +906,27 @@ struct s2io_nic {
*/
int rx_csum;
/* Below variables are used for fifo selection to transmit a packet */
u16 fifo_selector[MAX_TX_FIFOS];
/* Total fifos for tcp packets */
u8 total_tcp_fifos;
/*
* Beginning index of udp for udp packets
* Value will be equal to
* (tx_fifo_num - FIFO_UDP_MAX_NUM - FIFO_OTHER_MAX_NUM)
*/
u8 udp_fifo_idx;
u8 total_udp_fifos;
/*
* Beginning index of fifo for all other packets
* Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM)
*/
u8 other_fifo_idx;
/* after blink, the adapter must be restored with original
* values.
*/