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{
    "id": 83890,
    "url": "https://patches.dpdk.org/api/patches/83890/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/20201110140938.15046-4-maxime.leroy@6wind.com/",
    "project": {
        "id": 1,
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        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
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        "scm_url": "git://dpdk.org/dpdk",
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    "msgid": "<20201110140938.15046-4-maxime.leroy@6wind.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20201110140938.15046-4-maxime.leroy@6wind.com",
    "date": "2020-11-10T14:09:37",
    "name": "[3/4] net/mlx5: fix Rx descriptor status returned value",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "d4f4158a06794f3d96e00c4eeca65f652f2a4936",
    "submitter": {
        "id": 112,
        "url": "https://patches.dpdk.org/api/people/112/?format=api",
        "name": "Maxime Leroy",
        "email": "maxime.leroy@6wind.com"
    },
    "delegate": {
        "id": 3268,
        "url": "https://patches.dpdk.org/api/users/3268/?format=api",
        "username": "rasland",
        "first_name": "Raslan",
        "last_name": "Darawsheh",
        "email": "rasland@nvidia.com"
    },
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/20201110140938.15046-4-maxime.leroy@6wind.com/mbox/",
    "series": [
        {
            "id": 13774,
            "url": "https://patches.dpdk.org/api/series/13774/?format=api",
            "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=13774",
            "date": "2020-11-10T14:09:34",
            "name": "net/mlx5: fixes for rx queue count calculation",
            "version": 1,
            "mbox": "https://patches.dpdk.org/series/13774/mbox/"
        }
    ],
    "comments": "https://patches.dpdk.org/api/patches/83890/comments/",
    "check": "success",
    "checks": "https://patches.dpdk.org/api/patches/83890/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
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        "X-Received": "by 2002:a1c:c30a:: with SMTP id t10mr4828676wmf.183.1605017398937;\n Tue, 10 Nov 2020 06:09:58 -0800 (PST)",
        "From": "Maxime Leroy <maxime.leroy@6wind.com>",
        "To": "Matan Azrad <matan@nvidia.com>, Shahaf Shuler <shahafs@nvidia.com>,\n Viacheslav Ovsiienko <viacheslavo@nvidia.com>,\n Olivier Matz <olivier.matz@6wind.com>",
        "Cc": "dev@dpdk.org,\n\tDidier Pallard <didier.pallard@6wind.com>",
        "Date": "Tue, 10 Nov 2020 15:09:37 +0100",
        "Message-Id": "<20201110140938.15046-4-maxime.leroy@6wind.com>",
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        "References": "<20201110140938.15046-1-maxime.leroy@6wind.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[dpdk-dev] [PATCH 3/4] net/mlx5: fix Rx descriptor status returned\n\tvalue",
        "X-BeenThere": "dev@dpdk.org",
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        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "From: Didier Pallard <didier.pallard@6wind.com>\n\nTwo bugs in rx_queue_count function:\n- One entry may contain several segments, so 'used' must be multiplied\n  by number of segments per entry to properly reflect the queue usage.\n- rx_queue_count returns the number of entries used in queue, so it ranges\n  from 0 to max number of entries in queue, not this number minus\n  one.\n\nFixes: 8788fec1f269 (\"net/mlx5: implement descriptor status API\")\nSigned-off-by: Didier Pallard <didier.pallard@6wind.com>\n---\n drivers/net/mlx5/mlx5_rxtx.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)",
    "diff": "diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c\nindex 511003d1..2cabd650 100644\n--- a/drivers/net/mlx5/mlx5_rxtx.c\n+++ b/drivers/net/mlx5/mlx5_rxtx.c\n@@ -463,6 +463,7 @@ rx_queue_count(struct mlx5_rxq_data *rxq)\n \tstruct rxq_zip *zip = &rxq->zip;\n \tvolatile struct mlx5_cqe *cqe;\n \tconst unsigned int cqe_n = (1 << rxq->cqe_n);\n+\tconst unsigned int sges_n = (1 << rxq->sges_n);\n \tconst unsigned int cqe_cnt = cqe_n - 1;\n \tunsigned int cq_ci, cq_end, cq_cur;\n \tunsigned int used;\n@@ -491,7 +492,7 @@ rx_queue_count(struct mlx5_rxq_data *rxq)\n \t\tused += n;\n \t\tcqe = &(*rxq->cqes)[cq_ci & cqe_cnt];\n \t}\n-\tused = RTE_MIN(used, (1U << rxq->elts_n) - 1);\n+\tused = RTE_MIN(used * sges_n, 1U << rxq->elts_n);\n \treturn used;\n }\n \n",
    "prefixes": [
        "3/4"
    ]
}