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GET /api/patches/117609/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 117609,
    "url": "https://patches.dpdk.org/api/patches/117609/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/20221007174336.54354-32-andrew.boyer@amd.com/",
    "project": {
        "id": 1,
        "url": "https://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<20221007174336.54354-32-andrew.boyer@amd.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20221007174336.54354-32-andrew.boyer@amd.com",
    "date": "2022-10-07T17:43:32",
    "name": "[31/35] net/ionic: allow client to specify Tx free threshold",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "3bd1a6bb2a1a0ef44035563d5f7d539851a04dc6",
    "submitter": {
        "id": 2861,
        "url": "https://patches.dpdk.org/api/people/2861/?format=api",
        "name": "Andrew Boyer",
        "email": "Andrew.Boyer@amd.com"
    },
    "delegate": {
        "id": 319,
        "url": "https://patches.dpdk.org/api/users/319/?format=api",
        "username": "fyigit",
        "first_name": "Ferruh",
        "last_name": "Yigit",
        "email": "ferruh.yigit@amd.com"
    },
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/20221007174336.54354-32-andrew.boyer@amd.com/mbox/",
    "series": [
        {
            "id": 25037,
            "url": "https://patches.dpdk.org/api/series/25037/?format=api",
            "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=25037",
            "date": "2022-10-07T17:43:01",
            "name": "net/ionic: updates for 22.11 release",
            "version": 1,
            "mbox": "https://patches.dpdk.org/series/25037/mbox/"
        }
    ],
    "comments": "https://patches.dpdk.org/api/patches/117609/comments/",
    "check": "success",
    "checks": "https://patches.dpdk.org/api/patches/117609/checks/",
    "tags": {},
    "related": [],
    "headers": {
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        "From": "Andrew Boyer <andrew.boyer@amd.com>",
        "To": "<dev@dpdk.org>",
        "CC": "Andrew Boyer <andrew.boyer@amd.com>",
        "Subject": "[PATCH 31/35] net/ionic: allow client to specify Tx free threshold",
        "Date": "Fri, 7 Oct 2022 10:43:32 -0700",
        "Message-ID": "<20221007174336.54354-32-andrew.boyer@amd.com>",
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    },
    "content": "Some clients have opinions about how often to flush the\ntransmit ring.\n\nThe default value is the number of Tx descriptors minus the\ndefault Tx burst size.\n\nSigned-off-by: Andrew Boyer <andrew.boyer@amd.com>\n---\n drivers/net/ionic/ionic_dev.h    |  1 +\n drivers/net/ionic/ionic_ethdev.c |  4 ++--\n drivers/net/ionic/ionic_lif.h    |  1 +\n drivers/net/ionic/ionic_rxtx.c   | 17 +++++++++++++++--\n 4 files changed, 19 insertions(+), 4 deletions(-)",
    "diff": "diff --git a/drivers/net/ionic/ionic_dev.h b/drivers/net/ionic/ionic_dev.h\nindex 6b0540f615..d696de45e0 100644\n--- a/drivers/net/ionic/ionic_dev.h\n+++ b/drivers/net/ionic/ionic_dev.h\n@@ -20,6 +20,7 @@\n #define IONIC_MAX_RING_DESC\t\t32768\n #define IONIC_MIN_RING_DESC\t\t16\n #define IONIC_DEF_TXRX_DESC\t\t4096\n+#define IONIC_DEF_TXRX_BURST\t\t32\n \n #define IONIC_DEVCMD_TIMEOUT\t\t5\t/* devcmd_timeout */\n #define IONIC_DEVCMD_CHECK_PERIOD_US\t10\t/* devcmd status chk period */\ndiff --git a/drivers/net/ionic/ionic_ethdev.c b/drivers/net/ionic/ionic_ethdev.c\nindex 36fb09b810..28297879cf 100644\n--- a/drivers/net/ionic/ionic_ethdev.c\n+++ b/drivers/net/ionic/ionic_ethdev.c\n@@ -429,8 +429,8 @@ ionic_dev_info_get(struct rte_eth_dev *eth_dev,\n \tdev_info->tx_desc_lim = tx_desc_lim_v1;\n \n \t/* Driver-preferred Rx/Tx parameters */\n-\tdev_info->default_rxportconf.burst_size = 32;\n-\tdev_info->default_txportconf.burst_size = 32;\n+\tdev_info->default_rxportconf.burst_size = IONIC_DEF_TXRX_BURST;\n+\tdev_info->default_txportconf.burst_size = IONIC_DEF_TXRX_BURST;\n \tdev_info->default_rxportconf.nb_queues = 1;\n \tdev_info->default_txportconf.nb_queues = 1;\n \tdev_info->default_rxportconf.ring_size = IONIC_DEF_TXRX_DESC;\ndiff --git a/drivers/net/ionic/ionic_lif.h b/drivers/net/ionic/ionic_lif.h\nindex ec9cb24a61..e4af138a51 100644\n--- a/drivers/net/ionic/ionic_lif.h\n+++ b/drivers/net/ionic/ionic_lif.h\n@@ -104,6 +104,7 @@ struct ionic_tx_qcq {\n \n \t/* cacheline2 */\n \tuint16_t num_segs_fw;\t/* # segs supported by current FW */\n+\tuint16_t free_thresh;\n \tuint16_t flags;\n \n \tstruct ionic_tx_stats stats;\ndiff --git a/drivers/net/ionic/ionic_rxtx.c b/drivers/net/ionic/ionic_rxtx.c\nindex fceb8333f6..9a346f4143 100644\n--- a/drivers/net/ionic/ionic_rxtx.c\n+++ b/drivers/net/ionic/ionic_rxtx.c\n@@ -223,6 +223,13 @@ ionic_dev_tx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id,\n \tif (!rte_is_power_of_2(nb_desc) || nb_desc < IONIC_MIN_RING_DESC)\n \t\treturn -EINVAL; /* or use IONIC_DEFAULT_RING_DESC */\n \n+\tif (tx_conf->tx_free_thresh > nb_desc) {\n+\t\tIONIC_PRINT(ERR,\n+\t\t\t\"tx_free_thresh must be less than nb_desc (%u)\",\n+\t\t\tnb_desc);\n+\t\treturn -EINVAL;\n+\t}\n+\n \t/* Free memory prior to re-allocation if needed... */\n \tif (eth_dev->data->tx_queues[tx_queue_id] != NULL) {\n \t\tionic_dev_tx_queue_release(eth_dev, tx_queue_id);\n@@ -252,6 +259,10 @@ ionic_dev_tx_queue_setup(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id,\n \tif (offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)\n \t\ttxq->flags |= IONIC_QCQ_F_FAST_FREE;\n \n+\ttxq->free_thresh =\n+\t\ttx_conf->tx_free_thresh ? tx_conf->tx_free_thresh :\n+\t\tnb_desc - IONIC_DEF_TXRX_BURST;\n+\n \teth_dev->data->tx_queues[tx_queue_id] = txq;\n \n \treturn 0;\n@@ -609,8 +620,10 @@ ionic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,\n \t\trte_mbuf_prefetch_part2(tx_pkts[0]);\n \t}\n \n-\t/* Cleaning old buffers */\n-\tionic_tx_flush(txq);\n+\tif (unlikely(ionic_q_space_avail(q) < txq->free_thresh)) {\n+\t\t/* Cleaning old buffers */\n+\t\tionic_tx_flush(txq);\n+\t}\n \n \tnb_avail = ionic_q_space_avail(q);\n \tif (unlikely(nb_avail < nb_pkts)) {\n",
    "prefixes": [
        "31/35"
    ]
}