diff options
| author | Michael Chan <michael.chan@broadcom.com> | 2017-02-06 16:55:43 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-07 13:31:00 -0500 |
| commit | 38413406277fd060f46855ad527f6f8d4cf2652d (patch) | |
| tree | a948e2a2552b8cb3b44643243d1dcd79d3b6b2a4 /drivers/net/ethernet/broadcom/bnxt/bnxt.h | |
| parent | c6d30e8391b85e00eb544e6cf047ee0160ee9938 (diff) | |
bnxt_en: Add support for XDP_TX action.
Add dedicated transmit function and transmit completion handler for
XDP. The XDP transmit logic and completion logic are different than
regular TX ring. The TX buffer is recycled back to the RX ring when
it completes.
v3: Improved the buffer recyling scheme for XDP_TX.
v2: Add trace_xdp_exception().
Add dma_sync.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Tested-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnxt/bnxt.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnxt/bnxt.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index db4a41069b71..9f07b9cf8965 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -514,13 +514,17 @@ struct rx_tpa_end_cmp_ext { #define BNXT_RX_EVENT 1 #define BNXT_AGG_EVENT 2 +#define BNXT_TX_EVENT 4 struct bnxt_sw_tx_bd { struct sk_buff *skb; DEFINE_DMA_UNMAP_ADDR(mapping); u8 is_gso; u8 is_push; - unsigned short nr_frags; + union { + unsigned short nr_frags; + u16 rx_prod; + }; }; struct bnxt_sw_rx_bd { @@ -1191,6 +1195,19 @@ struct bnxt { #define SFF_MODULE_ID_QSFP28 0x11 #define BNXT_MAX_PHY_I2C_RESP_SIZE 64 +static inline u32 bnxt_tx_avail(struct bnxt *bp, struct bnxt_tx_ring_info *txr) +{ + /* Tell compiler to fetch tx indices from memory. */ + barrier(); + + return bp->tx_ring_size - + ((txr->tx_prod - txr->tx_cons) & bp->tx_ring_mask); +} + +extern const u16 bnxt_lhint_arr[]; + +int bnxt_alloc_rx_data(struct bnxt *bp, struct bnxt_rx_ring_info *rxr, + u16 prod, gfp_t gfp); void bnxt_reuse_rx_data(struct bnxt_rx_ring_info *rxr, u16 cons, void *data); void bnxt_set_tpa_flags(struct bnxt *bp); void bnxt_set_ring_params(struct bnxt *); |