diff options
| author |   Rasesh Mody <rmody@brocade.com> | 2013-12-17 17:07:35 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-12-18 00:30:33 -0500 |
| commit | e29aa33912dd71b1446e01d6d7a1b95d0e81f996 (patch) | |
| tree | c8c3982ad0f174525e00aeaaf3e13ccd6c27496a /drivers/net/ethernet/brocade/bna/bnad.h | |
| parent | bna: RX Filter Enhancements (diff) | |
| download | linux-dev-e29aa33912dd71b1446e01d6d7a1b95d0e81f996.tar.xz linux-dev-e29aa33912dd71b1446e01d6d7a1b95d0e81f996.zip | |
bna: Enable Multi Buffer RX
The CT2 HW supports multi-buffer Rx. This patch provides the necessary changes
for bnad to use multi-buffer Rx feature. For BNAD, multi-buffer Rx is by
default enabled when MTU is > 4096. For >4096 MTU, q0 data/large buffers are of
2048 size. As the resource requirements of multi-buffer Rx are different new Rx
needs to be created to use this feature. ASIC posts multiple completions if
frame exceeds buffer size. The last completion is marked with EOP flag.
- Separate HQ and DQ enums for resource allocations and configurations.
- rx_config and rxq structure changes to pass the correct info from bnad.
- DQ depth need not be same as HQ depth. So CQ depth is adjusted accordingly.
- Rx CFG frame size is taken from configured MTU.
- Rx q0 buffer size is configured from bnad s rx_config when multi-buffer is
enabled.
- Poll for entire frame completion.
- Once EOP completion is received gather the number of vectors used by the
frame to submit it to the stack.
- Changed MTU to frame size wherever necessary.
Signed-off-by: Rasesh Mody <rmody@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/brocade/bna/bnad.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/ethernet/brocade/bna/bnad.h b/drivers/net/ethernet/brocade/bna/bnad.h index 9d10c69f5889..2e6b943262a2 100644 --- a/drivers/net/ethernet/brocade/bna/bnad.h +++ b/drivers/net/ethernet/brocade/bna/bnad.h @@ -105,6 +105,9 @@ struct bnad_rx_ctrl { #define BNAD_NUM_TXQ (bnad->num_tx * bnad->num_txq_per_tx) #define BNAD_NUM_RXP (bnad->num_rx * bnad->num_rxp_per_rx) +#define BNAD_FRAME_SIZE(_mtu) \ + (ETH_HLEN + VLAN_HLEN + (_mtu) + ETH_FCS_LEN) + /* * DATA STRUCTURES */ @@ -241,12 +244,13 @@ struct bnad_rx_unmap { enum bnad_rxbuf_type { BNAD_RXBUF_NONE = 0, - BNAD_RXBUF_SKB = 1, + BNAD_RXBUF_SK_BUFF = 1, BNAD_RXBUF_PAGE = 2, - BNAD_RXBUF_MULTI = 3 + BNAD_RXBUF_MULTI_BUFF = 3 }; -#define BNAD_RXBUF_IS_PAGE(_type) ((_type) == BNAD_RXBUF_PAGE) +#define BNAD_RXBUF_IS_SK_BUFF(_type) ((_type) == BNAD_RXBUF_SK_BUFF) +#define BNAD_RXBUF_IS_MULTI_BUFF(_type) ((_type) == BNAD_RXBUF_MULTI_BUFF) struct bnad_rx_unmap_q { int reuse_pi; @@ -256,6 +260,9 @@ struct bnad_rx_unmap_q { struct bnad_rx_unmap unmap[0]; }; +#define BNAD_PCI_DEV_IS_CAT2(_bnad) \ + ((_bnad)->pcidev->device == BFA_PCI_DEVICE_ID_CT2) + /* Bit mask values for bnad->cfg_flags */ #define BNAD_CF_DIM_ENABLED 0x01 /* DIM */ #define BNAD_CF_PROMISC 0x02 |