From: Kevin Traynor <ktraynor@redhat.com> To: Maxime Leroy <maxime.leroy@6wind.com> Cc: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>, Viacheslav Ovsiienko <viacheslavo@nvidia.com>, dpdk stable <stable@dpdk.org> Subject: [dpdk-stable] patch 'net/mlx5: fix Rx queue count calculation' has been queued to LTS release 18.11.11 Date: Mon, 23 Nov 2020 17:12:15 +0000 Message-ID: <20201123171222.79398-23-ktraynor@redhat.com> (raw) In-Reply-To: <20201123171222.79398-1-ktraynor@redhat.com> Hi, FYI, your patch has been queued to LTS release 18.11.11 Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet. It will be pushed if I get no objections before 11/27/20. 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-queue This queued commit can be viewed at: https://github.com/kevintraynor/dpdk-stable-queue/commit/77fb0d8675924094ae787238477eebad1010bfa0 Thanks. Kevin. --- From 77fb0d8675924094ae787238477eebad1010bfa0 Mon Sep 17 00:00:00 2001 From: Maxime Leroy <maxime.leroy@6wind.com> Date: Tue, 17 Nov 2020 12:26:46 +0100 Subject: [PATCH] net/mlx5: fix Rx queue count calculation [ upstream commit 9ae9720d7f0c12f877df9214f7cbedae546d4020 ] The commit d2d57605522d ("net/mlx5: fix Rx queue count calculation") is incorrect because the count calculation is wrong for the next cqe: Example: Compressed Set of packets 1 | Compressed Set of packets 2 C | a | e0 | e1 | e2 | e3 | e4 | e5 | C | a | e0 There are 2 compressed set of packets in the first queue. For the first set, n is computed correctly. But for the second, n is not computed properly. Because the zip context is for the first set. The second set is not yet decompressed, so there are no context. To fix the issue, we should only use the zip context for the first CQEs series. Fixes: d2d57605522d ("net/mlx5: fix Rx queue count calculation") Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com> Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com> Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com> --- drivers/net/mlx5/mlx5_rxtx.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c index 2896a9b4ef..dd7b183395 100644 --- a/drivers/net/mlx5/mlx5_rxtx.c +++ b/drivers/net/mlx5/mlx5_rxtx.c @@ -431,9 +431,16 @@ rx_queue_count(struct mlx5_rxq_data *rxq) struct rxq_zip *zip = &rxq->zip; volatile struct mlx5_cqe *cqe; - unsigned int cq_ci = rxq->cq_ci; const unsigned int cqe_n = (1 << rxq->cqe_n); const unsigned int cqe_cnt = cqe_n - 1; - unsigned int used = 0; + unsigned int cq_ci, used; + /* if we are processing a compressed cqe */ + if (zip->ai) { + used = zip->cqe_cnt - zip->ai; + cq_ci = zip->cq_ci; + } else { + used = 0; + cq_ci = rxq->cq_ci; + } cqe = &(*rxq->cqes)[cq_ci & cqe_cnt]; while (check_cqe(cqe, cqe_n, cq_ci) == 0) { @@ -443,8 +450,5 @@ rx_queue_count(struct mlx5_rxq_data *rxq) op_own = cqe->op_own; if (MLX5_CQE_FORMAT(op_own) == MLX5_COMPRESSED) - if (unlikely(zip->ai)) - n = zip->cqe_cnt - zip->ai; - else - n = rte_be_to_cpu_32(cqe->byte_cnt); + n = rte_be_to_cpu_32(cqe->byte_cnt); else n = 1; -- 2.26.2 --- Diff of the applied patch vs upstream commit (please double-check if non-empty: --- --- - 2020-11-23 17:10:14.532486728 +0000 +++ 0023-net-mlx5-fix-Rx-queue-count-calculation.patch 2020-11-23 17:10:14.007061601 +0000 @@ -1 +1 @@ -From 9ae9720d7f0c12f877df9214f7cbedae546d4020 Mon Sep 17 00:00:00 2001 +From 77fb0d8675924094ae787238477eebad1010bfa0 Mon Sep 17 00:00:00 2001 @@ -5,0 +6,2 @@ +[ upstream commit 9ae9720d7f0c12f877df9214f7cbedae546d4020 ] + @@ -25 +26,0 @@ -Cc: stable@dpdk.org @@ -35 +36 @@ -index 844a1c633d..2733dcd3ff 100644 +index 2896a9b4ef..dd7b183395 100644 @@ -38 +39 @@ -@@ -463,9 +463,16 @@ rx_queue_count(struct mlx5_rxq_data *rxq) +@@ -431,9 +431,16 @@ rx_queue_count(struct mlx5_rxq_data *rxq) @@ -56,2 +57,2 @@ - while (check_cqe(cqe, cqe_n, cq_ci) != MLX5_CQE_STATUS_HW_OWN) { -@@ -475,8 +482,5 @@ rx_queue_count(struct mlx5_rxq_data *rxq) + while (check_cqe(cqe, cqe_n, cq_ci) == 0) { +@@ -443,8 +450,5 @@ rx_queue_count(struct mlx5_rxq_data *rxq)
next prev parent reply other threads:[~2020-11-23 17:13 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-23 17:11 [dpdk-stable] patch 'examples/l2fwd-keepalive: skip meson build if no librt' " Kevin Traynor 2020-11-23 17:11 ` [dpdk-stable] patch 'devtools: fix directory filter in forbidden token check' " Kevin Traynor 2020-11-23 17:11 ` [dpdk-stable] patch 'examples/qos_sched: fix usage string' " Kevin Traynor 2020-11-23 17:11 ` [dpdk-stable] patch 'usertools: fix CPU layout script to be PEP8 compliant' " Kevin Traynor 2020-11-23 17:11 ` [dpdk-stable] patch 'config: enable packet prefetching with Meson' " Kevin Traynor 2020-11-23 17:11 ` [dpdk-stable] patch 'net/ring: fix typo in log message' " Kevin Traynor 2020-11-23 17:11 ` [dpdk-stable] patch 'examples/vhost_crypto: add new line character in usage' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'vhost: fix virtqueue initialization' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'net/i40e: add C++ include guard' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'net/avf: fix releasing mbufs' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'net/avf: fix performance drop after port reset' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'net/i40e: fix build for log format specifier' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'net/ixgbe: remove redundant MAC flag check' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'vhost: fix error path when setting memory tables' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'vhost: fix fd leak in dirty logging setup' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'vhost: fix fd leak in kick " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'app/testpmd: fix MTU after device configure' " Kevin Traynor 2020-11-23 18:35 ` David Marchand 2020-11-24 9:38 ` Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'app/eventdev: check timer adadpters number' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'examples/kni: fix build with pkg-config' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'examples/l2fwd-crypto: " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'examples/performance-thread: " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'doc: fix rule file parameters in l3fwd-acl guide' " Kevin Traynor 2020-11-23 17:12 ` Kevin Traynor [this message] 2020-11-23 17:12 ` [dpdk-stable] patch 'net/mlx5: fix Rx descriptor status' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'app/testpmd: revert setting MTU explicitly after configure' " Kevin Traynor 2020-11-23 18:36 ` David Marchand 2020-11-23 17:12 ` [dpdk-stable] patch 'compress/isal: check allocation in queue setup' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'examples/l3fwd-power: check packet types after start' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'net/mlx5: fix representor interrupts handler' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'malloc: fix style in free list index computation' " Kevin Traynor 2020-11-23 17:12 ` [dpdk-stable] patch 'usertools: fix pmdinfo parsing' " Kevin Traynor -- strict thread matches above, loose matches on Subject: below -- 2020-11-05 12:39 [dpdk-stable] patch 'bus/pci: remove duplicate declaration' " Kevin Traynor 2020-11-05 12:39 ` [dpdk-stable] patch 'net/mlx5: fix Rx queue count calculation' " Kevin Traynor
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