diff options
Diffstat (limited to 'drivers/net/ethernet/sfc/efx.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/efx.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h index be8f9158a71..70755c97251 100644 --- a/drivers/net/ethernet/sfc/efx.h +++ b/drivers/net/ethernet/sfc/efx.h @@ -30,6 +30,7 @@ extern netdev_tx_t efx_enqueue_skb(struct efx_tx_queue *tx_queue, struct sk_buff *skb); extern void efx_xmit_done(struct efx_tx_queue *tx_queue, unsigned int index); extern int efx_setup_tc(struct net_device *net_dev, u8 num_tc); +extern unsigned int efx_tx_max_skb_descs(struct efx_nic *efx); /* RX */ extern int efx_probe_rx_queue(struct efx_rx_queue *rx_queue); @@ -52,10 +53,15 @@ extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue); #define EFX_MAX_EVQ_SIZE 16384UL #define EFX_MIN_EVQ_SIZE 512UL -/* The smallest [rt]xq_entries that the driver supports. Callers of - * efx_wake_queue() assume that they can subsequently send at least one - * skb. Falcon/A1 may require up to three descriptors per skb_frag. */ -#define EFX_MIN_RING_SIZE (roundup_pow_of_two(2 * 3 * MAX_SKB_FRAGS)) +/* Maximum number of TCP segments we support for soft-TSO */ +#define EFX_TSO_MAX_SEGS 100 + +/* The smallest [rt]xq_entries that the driver supports. RX minimum + * is a bit arbitrary. For TX, we must have space for at least 2 + * TSO skbs. + */ +#define EFX_RXQ_MIN_ENT 128U +#define EFX_TXQ_MIN_ENT(efx) (2 * efx_tx_max_skb_descs(efx)) /* Filters */ extern int efx_probe_filters(struct efx_nic *efx); |