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[dpdk-dev,10/23] net/sfc: allow one Rx queue entry carry many packet buffers

Message ID 1524137826-5675-11-git-send-email-arybchenko@solarflare.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail apply patch file failure

Commit Message

Andrew Rybchenko April 19, 2018, 11:36 a.m. UTC 
  One HW Rx descriptor has many packet buffers in the case of equal
stride super-buffer Rx modes. Each packet buffer is still treated
as separate SW Rx descriptor. rxq_entries is the size of HW Rx ring
whereas nb_rx_desc is the number of SW Rx descriptors.

Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
Reviewed-by: Ivan Malov <ivan.malov@oktetlabs.ru>
---
 drivers/net/sfc/sfc_rx.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/drivers/net/sfc/sfc_rx.c b/drivers/net/sfc/sfc_rx.c
index a4aae1b..e24a6ef 100644
--- a/drivers/net/sfc/sfc_rx.c
+++ b/drivers/net/sfc/sfc_rx.c
@@ -988,7 +988,6 @@  sfc_rx_qinit(struct sfc_adapter *sa, unsigned int sw_index,
 		goto fail_size_up_rings;
 	SFC_ASSERT(rxq_entries >= EFX_RXQ_MINNDESCS);
 	SFC_ASSERT(rxq_entries <= EFX_RXQ_MAXNDESCS);
-	SFC_ASSERT(rxq_entries >= nb_rx_desc);
 	SFC_ASSERT(rxq_max_fill_level <= nb_rx_desc);
 
 	rc = sfc_rx_qcheck_conf(sa, rxq_max_fill_level, rx_conf);