patch 'net/sfc: do not push fast free offload to default TxQ config' has been queued to stable release 21.11.1

Kevin Traynor ktraynor at redhat.com
Mon Feb 21 16:35:52 CET 2022


Hi,

FYI, your patch has been queued to stable release 21.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/26/22. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/915b0b0b9fb3eb0e1f233a3dab2cf3bf999a0f46

Thanks.

Kevin

---
>From 915b0b0b9fb3eb0e1f233a3dab2cf3bf999a0f46 Mon Sep 17 00:00:00 2001
From: Ivan Malov <ivan.malov at oktetlabs.ru>
Date: Wed, 9 Feb 2022 02:26:47 +0300
Subject: [PATCH] net/sfc: do not push fast free offload to default TxQ config

[ upstream commit f67615ea626e23e61b71d27f894fe9a4ef716df3 ]

Doing so is wrong since fast free is an adapter-wide offload.

Technically, the offending commit (see "Fixes" tag) does not
induce failures, however, such started to occur after commit
a4996bd89c42 ("ethdev: new Rx/Tx offloads API") had shown up,
because of the strict offload validation in the generic code.

Fixes: c78d280e88ef ("net/sfc: convert to new Tx offload API")

Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton at xilinx.com>
---
 drivers/net/sfc/sfc_ethdev.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/net/sfc/sfc_ethdev.c b/drivers/net/sfc/sfc_ethdev.c
index d4210b63dd..184f6e7c67 100644
--- a/drivers/net/sfc/sfc_ethdev.c
+++ b/drivers/net/sfc/sfc_ethdev.c
@@ -95,5 +95,4 @@ sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	struct sfc_rss *rss = &sas->rss;
 	struct sfc_mae *mae = &sa->mae;
-	uint64_t txq_offloads_def = 0;
 
 	sfc_log_init(sa, "entry");
@@ -147,9 +146,4 @@ sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 				    dev_info->tx_queue_offload_capa;
 
-	if (dev_info->tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
-		txq_offloads_def |= RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
-
-	dev_info->default_txconf.offloads |= txq_offloads_def;
-
 	if (rss->context_type != EFX_RX_SCALE_UNAVAILABLE) {
 		uint64_t rte_hf = 0;
-- 
2.34.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2022-02-21 15:22:48.079229622 +0000
+++ 0163-net-sfc-do-not-push-fast-free-offload-to-default-TxQ.patch	2022-02-21 15:22:44.315704630 +0000
@@ -1 +1 @@
-From f67615ea626e23e61b71d27f894fe9a4ef716df3 Mon Sep 17 00:00:00 2001
+From 915b0b0b9fb3eb0e1f233a3dab2cf3bf999a0f46 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit f67615ea626e23e61b71d27f894fe9a4ef716df3 ]
+
@@ -14 +15,0 @@
-Cc: stable at dpdk.org
@@ -24 +25 @@
-index abf7b8d287..b04a05bd9f 100644
+index d4210b63dd..184f6e7c67 100644



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