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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-27 07:15:30 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-27 07:15:30 -0700
commita7bdf7fa33127bf08eb0810698bca607a9462df4 (patch)
tree2f4be686e49710d10cc4f5ebc2d5f06ae030b9bd /drivers/net/ethernet/sfc/efx.h
parent7fda953ffed1b94aa68f80c6c3ab312328aedcb3 (diff)
parentfea7a08acb13524b47711625eebea40a0ede69a0 (diff)
downloadblackbird-op-linux-a7bdf7fa33127bf08eb0810698bca607a9462df4.tar.gz
blackbird-op-linux-a7bdf7fa33127bf08eb0810698bca607a9462df4.zip
Merge v3.6-rc3 into usb-next
This picks up fixes that we need in this branch for testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ethernet/sfc/efx.h')
-rw-r--r--drivers/net/ethernet/sfc/efx.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index be8f9158a714..70755c97251a 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);
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