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GET /api/patches/112242/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 112242,
    "url": "http://patchwork.dpdk.org/api/patches/112242/?format=api",
    "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20220602015304.710197-4-jin.liu@corigine.com/",
    "project": {
        "id": 1,
        "url": "http://patchwork.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": "<20220602015304.710197-4-jin.liu@corigine.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20220602015304.710197-4-jin.liu@corigine.com",
    "date": "2022-06-02T01:52:53",
    "name": "[03/14] net/nfp: remove pessimistic limit",
    "commit_ref": null,
    "pull_url": null,
    "state": "changes-requested",
    "archived": true,
    "hash": "b04d438afe7dff8bb8a7cae4f4e4c853da60e572",
    "submitter": {
        "id": 2670,
        "url": "http://patchwork.dpdk.org/api/people/2670/?format=api",
        "name": "Jin Liu",
        "email": "jin.liu@corigine.com"
    },
    "delegate": {
        "id": 319,
        "url": "http://patchwork.dpdk.org/api/users/319/?format=api",
        "username": "fyigit",
        "first_name": "Ferruh",
        "last_name": "Yigit",
        "email": "ferruh.yigit@amd.com"
    },
    "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20220602015304.710197-4-jin.liu@corigine.com/mbox/",
    "series": [
        {
            "id": 23295,
            "url": "http://patchwork.dpdk.org/api/series/23295/?format=api",
            "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=23295",
            "date": "2022-06-02T01:52:50",
            "name": "Add support of NFP3800 chip and firmware with NFDk",
            "version": 1,
            "mbox": "http://patchwork.dpdk.org/series/23295/mbox/"
        }
    ],
    "comments": "http://patchwork.dpdk.org/api/patches/112242/comments/",
    "check": "success",
    "checks": "http://patchwork.dpdk.org/api/patches/112242/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
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        "Authentication-Results": "dkim=none (message not signed)\n header.d=none;dmarc=none action=none header.from=corigine.com;",
        "From": "Jin Liu <jin.liu@corigine.com>",
        "To": "dev@dpdk.org",
        "Cc": "niklas.soderlund@corigine.com, Jin Liu <jin.liu@corigine.com>,\n Yinjun Zhang <yinjun.zhang@corigine.com>,\n Chaoyong He <chaoyong.he@corigine.com>",
        "Subject": "[PATCH 03/14] net/nfp: remove pessimistic limit",
        "Date": "Thu,  2 Jun 2022 03:52:53 +0200",
        "Message-Id": "<20220602015304.710197-4-jin.liu@corigine.com>",
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    },
    "content": "Multiple writes cause intermediate pointer values that do not\nend on complete TX descriptors.\n\nThe QCP peripheral on the NFP provides a number of access\nmodes. In some access modes, the maximum amount to add must\nbe restricted to a 6bit value. The particular access mode\nused by _nfp_qcp_ptr_add() has no such restrictions, so the\n\"NFP_QCP_MAX_ADD\" test is unnecessary.\n\nNote that trying to add more that the configured ring size\nin a single add will cause a QCP overflow, caught and handled\nby the QCP peripheral.\n\nSigned-off-by: Jin Liu <jin.liu@corigine.com>\nSigned-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>\nSigned-off-by: Chaoyong He <chaoyong.he@corigine.com>\nSigned-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>\n---\n drivers/net/nfp/nfp_common.h | 12 +-----------\n 1 file changed, 1 insertion(+), 11 deletions(-)",
    "diff": "diff --git a/drivers/net/nfp/nfp_common.h b/drivers/net/nfp/nfp_common.h\nindex 8b35fa119c..2ca3c0c30a 100644\n--- a/drivers/net/nfp/nfp_common.h\n+++ b/drivers/net/nfp/nfp_common.h\n@@ -44,9 +44,6 @@ struct nfp_net_adapter;\n /* The offset of the queue controller queues in the PCIe Target */\n #define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))\n \n-/* Maximum value which can be added to a queue with one transaction */\n-#define NFP_QCP_MAX_ADD\t0x7f\n-\n /* Interrupt definitions */\n #define NFP_NET_IRQ_LSC_IDX             0\n \n@@ -304,8 +301,6 @@ nn_cfg_writeq(struct nfp_net_hw *hw, int off, uint64_t val)\n  * @q: Base address for queue structure\n  * @ptr: Add to the Read or Write pointer\n  * @val: Value to add to the queue pointer\n- *\n- * If @val is greater than @NFP_QCP_MAX_ADD multiple writes are performed.\n  */\n static inline void\n nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)\n@@ -317,12 +312,7 @@ nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)\n \telse\n \t\toff = NFP_QCP_QUEUE_ADD_WPTR;\n \n-\twhile (val > NFP_QCP_MAX_ADD) {\n-\t\tnn_writel(rte_cpu_to_le_32(NFP_QCP_MAX_ADD), q + off);\n-\t\tval -= NFP_QCP_MAX_ADD;\n-}\n-\n-nn_writel(rte_cpu_to_le_32(val), q + off);\n+\tnn_writel(rte_cpu_to_le_32(val), q + off);\n }\n \n /*\n",
    "prefixes": [
        "03/14"
    ]
}