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GET /api/patches/140013/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 140013,
    "url": "http://patchwork.dpdk.org/api/patches/140013/?format=api",
    "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20240510050507.14381-2-stephen@networkplumber.org/",
    "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": "<20240510050507.14381-2-stephen@networkplumber.org>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20240510050507.14381-2-stephen@networkplumber.org",
    "date": "2024-05-10T05:01:21",
    "name": "[RFC,1/3] ethdev: add internal helper of SW driver statistics",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "36f6a98351f5f45817dcf7e39c8861edfbfea91e",
    "submitter": {
        "id": 27,
        "url": "http://patchwork.dpdk.org/api/people/27/?format=api",
        "name": "Stephen Hemminger",
        "email": "stephen@networkplumber.org"
    },
    "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/20240510050507.14381-2-stephen@networkplumber.org/mbox/",
    "series": [
        {
            "id": 31900,
            "url": "http://patchwork.dpdk.org/api/series/31900/?format=api",
            "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=31900",
            "date": "2024-05-10T05:01:20",
            "name": "generic sw counters",
            "version": 1,
            "mbox": "http://patchwork.dpdk.org/series/31900/mbox/"
        }
    ],
    "comments": "http://patchwork.dpdk.org/api/patches/140013/comments/",
    "check": "warning",
    "checks": "http://patchwork.dpdk.org/api/patches/140013/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@inbox.dpdk.org",
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        "From": "Stephen Hemminger <stephen@networkplumber.org>",
        "To": "dev@dpdk.org",
        "Cc": "Stephen Hemminger <stephen@networkplumber.org>",
        "Subject": "[RFC 1/3] ethdev: add internal helper of SW driver statistics",
        "Date": "Thu,  9 May 2024 22:01:21 -0700",
        "Message-ID": "<20240510050507.14381-2-stephen@networkplumber.org>",
        "X-Mailer": "git-send-email 2.43.0",
        "In-Reply-To": "<20240510050507.14381-1-stephen@networkplumber.org>",
        "References": "<20240425174617.2126159-1-ferruh.yigit@amd.com>\n <20240510050507.14381-1-stephen@networkplumber.org>",
        "MIME-Version": "1.0",
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        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.29",
        "Precedence": "list",
        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
        "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>",
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        "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org"
    },
    "content": "This clones the staistic update code from virtio for use\nby other drivers. It also uses native uint64_t on 64 bit platform\nbut atomic operations on 32 bit platforms.\n\nSigned-off-by: Stephen Hemminger <stephen@networkplumber.org>\n\nethdev: use atomic on 32\n---\n lib/ethdev/ethdev_swstats.c | 294 ++++++++++++++++++++++++++++++++++++\n lib/ethdev/ethdev_swstats.h |  60 ++++++++\n lib/ethdev/meson.build      |   2 +\n lib/ethdev/version.map      |   7 +\n 4 files changed, 363 insertions(+)\n create mode 100644 lib/ethdev/ethdev_swstats.c\n create mode 100644 lib/ethdev/ethdev_swstats.h",
    "diff": "diff --git a/lib/ethdev/ethdev_swstats.c b/lib/ethdev/ethdev_swstats.c\nnew file mode 100644\nindex 0000000000..81b9ac13b5\n--- /dev/null\n+++ b/lib/ethdev/ethdev_swstats.c\n@@ -0,0 +1,294 @@\n+/* SPDX-License-Identifier: BSD-3-Clause\n+ * Copyright (c) Stephen Hemminger <stephen@networkplumber.org>\n+ */\n+\n+#include <stdbool.h>\n+\n+#include <rte_common.h>\n+#include <ethdev_driver.h>\n+\n+#include \"rte_ethdev.h\"\n+#include \"ethdev_swstats.h\"\n+\n+/*\n+ * Handling of 64 bit counters to problems with load/store tearing on 32 bit.\n+ * Store of aligned 64 bit never gets seperated on 64 bit platform.\n+ * But on 32 bit need to use atomic.\n+ */\n+#ifdef RTE_ARCH_64\n+typedef uint64_t eth_counter_t;\n+\n+static inline void\n+eth_counter_add(eth_counter_t *counter, uint32_t val)\n+{\n+\tcounter += val;\n+}\n+\n+static inline uint64_t\n+eth_counter_read(const eth_counter_t *counter)\n+{\n+\treturn *counter;\n+}\n+\n+static inline void\n+eth_counter_reset(eth_counter_t *counter)\n+{\n+\t*counter = 0;\n+}\n+#else\n+static inline void\n+eth_counter_add(eth_counter_t *counter, uint32_t val)\n+{\n+\trte_atomic_fetch_add_explicit(counter, val, rte_memory_order_relaxed);\n+}\n+\n+static inline uint64_t\n+eth_counter_read(const eth_counter_t *counter)\n+{\n+\treturn rte_atomic_load_explicit(counter, rte_memory_order_relaxed);\n+}\n+\n+static inline void\n+eth_counter_reset(eth_counter_t *counter)\n+{\n+\trte_atomic_store_explicit(counter, 0, rte_memory_order_relaxed);\n+}\n+\n+#endif\n+\n+static void\n+eth_qsw_reset(struct rte_eth_qsw_stats *qstats)\n+{\n+\tunsigned int i;\n+\n+\teth_counter_reset(&qstats->packets);\n+\teth_counter_reset(&qstats->bytes);\n+\teth_counter_reset(&qstats->multicast);\n+\teth_counter_reset(&qstats->broadcast);\n+\n+\tfor (i = 0; i < RTE_DIM(qstats->size_bins); i++)\n+\t\teth_counter_reset(&qstats->size_bins[i]);\n+}\n+\n+void\n+rte_eth_qsw_update(struct rte_eth_qsw_stats *qstats, const struct rte_mbuf *mbuf)\n+{\n+\tuint32_t s = mbuf->pkt_len;\n+\tuint32_t bin;\n+\tconst struct rte_ether_addr *ea;\n+\n+\tif (s == 64) {\n+\t\tbin = 1;\n+\t} else if (s > 64 && s < 1024) {\n+\t\t/* count zeros, and offset into correct bin */\n+\t\tbin = (sizeof(s) * 8) - rte_clz32(s) - 5;\n+\t} else if (s < 64) {\n+\t\tbin = 0;\n+\t} else if (s < 1519) {\n+\t\tbin = 6;\n+\t} else {\n+\t\tbin = 7;\n+\t}\n+\n+\teth_counter_add(&qstats->packets, 1);\n+\teth_counter_add(&qstats->bytes, s);\n+\teth_counter_add(&qstats->size_bins[bin], 1);\n+\n+\tea = rte_pktmbuf_mtod(mbuf, const struct rte_ether_addr *);\n+\tif (rte_is_multicast_ether_addr(ea)) {\n+\t\tif (rte_is_broadcast_ether_addr(ea))\n+\t\t\teth_counter_add(&qstats->broadcast, 1);\n+\t\telse\n+\t\t\teth_counter_add(&qstats->multicast, 1);\n+\t}\n+}\n+\n+void\n+rte_eth_qsw_error_inc(struct rte_eth_qsw_stats *qstats)\n+{\n+\teth_counter_add(&qstats->errors, 1);\n+}\n+\n+int\n+rte_eth_qsw_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)\n+{\n+\tunsigned int i;\n+\tuint64_t packets, bytes, errors;\n+\n+\tfor (i = 0; i < dev->data->nb_tx_queues; i++) {\n+\t\t/* assumes that rte_eth_qsw_stats is at start of the queue structure */\n+\t\tconst struct rte_eth_qsw_stats *qstats = dev->data->tx_queues[i];\n+\n+\t\tif (qstats == NULL)\n+\t\t\tcontinue;\n+\n+\t\tpackets = eth_counter_read(&qstats->packets);\n+\t\tbytes = eth_counter_read(&qstats->bytes);\n+\t\terrors = eth_counter_read(&qstats->errors);\n+\n+\t\tstats->opackets += packets;\n+\t\tstats->obytes += bytes;\n+\t\tstats->oerrors += errors;\n+\n+\t\tif (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {\n+\t\t\tstats->q_opackets[i] = packets;\n+\t\t\tstats->q_obytes[i] = bytes;\n+\t\t}\n+\t}\n+\n+\tfor (i = 0; i < dev->data->nb_rx_queues; i++) {\n+\t\t/* assumes that rte_eth_qsw_stats is at start of the queue structure */\n+\t\tconst struct rte_eth_qsw_stats *qstats = dev->data->rx_queues[i];\n+\n+\t\tif (qstats == NULL)\n+\t\t\tcontinue;\n+\n+\t\tpackets = eth_counter_read(&qstats->packets);\n+\t\tbytes = eth_counter_read(&qstats->bytes);\n+\t\terrors = eth_counter_read(&qstats->errors);\n+\n+\t\tstats->ipackets += packets;\n+\t\tstats->ibytes += bytes;\n+\t\tstats->ierrors += errors;\n+\n+\t\tif (i < RTE_ETHDEV_QUEUE_STAT_CNTRS) {\n+\t\t\tstats->q_ipackets[i] = packets;\n+\t\t\tstats->q_ibytes[i] = bytes;\n+\t\t}\n+\t}\n+\n+\tstats->rx_nombuf = dev->data->rx_mbuf_alloc_failed;\n+\treturn 0;\n+}\n+\n+int\n+rte_eth_qsw_stats_reset(struct rte_eth_dev *dev)\n+{\n+\tunsigned int i;\n+\n+\tfor (i = 0; i < dev->data->nb_tx_queues; i++) {\n+\t\tstruct rte_eth_qsw_stats *qstats = dev->data->tx_queues[i];\n+\n+\t\tif (qstats != NULL)\n+\t\t\teth_qsw_reset(qstats);\n+\t}\n+\n+\tfor (i = 0; i < dev->data->nb_rx_queues; i++) {\n+\t\tstruct rte_eth_qsw_stats *qstats = dev->data->rx_queues[i];\n+\n+\t\tif (qstats != NULL)\n+\t\t\teth_qsw_reset(qstats);\n+\t}\n+\n+\treturn 0;\n+}\n+\n+struct xstats_name_off {\n+\tchar name[RTE_ETH_XSTATS_NAME_SIZE];\n+\tsize_t offset;\n+};\n+\n+/* [rt]x_qX_ is prepended to the name string here */\n+static const struct xstats_name_off eth_swstats_strings[] = {\n+\t{\"good_packets\",           offsetof(struct rte_eth_qsw_stats, packets)},\n+\t{\"good_bytes\",             offsetof(struct rte_eth_qsw_stats, bytes)},\n+\t{\"errors\",                 offsetof(struct rte_eth_qsw_stats, errors)},\n+\t{\"multicast_packets\",      offsetof(struct rte_eth_qsw_stats, multicast)},\n+\t{\"broadcast_packets\",      offsetof(struct rte_eth_qsw_stats, broadcast)},\n+\t{\"undersize_packets\",      offsetof(struct rte_eth_qsw_stats, size_bins[0])},\n+\t{\"size_64_packets\",        offsetof(struct rte_eth_qsw_stats, size_bins[1])},\n+\t{\"size_65_127_packets\",    offsetof(struct rte_eth_qsw_stats, size_bins[2])},\n+\t{\"size_128_255_packets\",   offsetof(struct rte_eth_qsw_stats, size_bins[3])},\n+\t{\"size_256_511_packets\",   offsetof(struct rte_eth_qsw_stats, size_bins[4])},\n+\t{\"size_512_1023_packets\",  offsetof(struct rte_eth_qsw_stats, size_bins[5])},\n+\t{\"size_1024_1518_packets\", offsetof(struct rte_eth_qsw_stats, size_bins[6])},\n+\t{\"size_1519_max_packets\",  offsetof(struct rte_eth_qsw_stats, size_bins[7])},\n+};\n+#define NUM_SWSTATS_XSTATS RTE_DIM(eth_swstats_strings)\n+\n+\n+int\n+rte_eth_qsw_xstats_get_names(struct rte_eth_dev *dev,\n+\t\t\t\tstruct rte_eth_xstat_name *xstats_names,\n+\t\t\t\t__rte_unused unsigned limit)\n+{\n+\tunsigned int i, t, count = 0;\n+\n+\tif (xstats_names == NULL)\n+\t\treturn (dev->data->nb_tx_queues + dev->data->nb_rx_queues) * NUM_SWSTATS_XSTATS;\n+\n+\tfor (i = 0; i < dev->data->nb_rx_queues; i++) {\n+\t\tconst void *rxq = dev->data->rx_queues[i];\n+\n+\t\tif (rxq == NULL)\n+\t\t\tcontinue;\n+\n+\t\tfor (t = 0; t < NUM_SWSTATS_XSTATS; t++) {\n+\t\t\tsnprintf(xstats_names[count].name, sizeof(xstats_names[count].name),\n+\t\t\t\t \"rx_q%u_%s\", i, eth_swstats_strings[t].name);\n+\t\t\tcount++;\n+\t\t}\n+\t}\n+\n+\tfor (i = 0; i < dev->data->nb_tx_queues; i++) {\n+\t\tconst void *txq = dev->data->tx_queues[i];\n+\n+\t\tif (txq == NULL)\n+\t\t\tcontinue;\n+\n+\t\tfor (t = 0; t < NUM_SWSTATS_XSTATS; t++) {\n+\t\t\tsnprintf(xstats_names[count].name, sizeof(xstats_names[count].name),\n+\t\t\t\t \"tx_q%u_%s\", i, eth_swstats_strings[t].name);\n+\t\t\tcount++;\n+\t\t}\n+\t}\n+\treturn count;\n+}\n+\n+int\n+rte_eth_qsw_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats, unsigned int n)\n+{\n+\tunsigned int i, t, count = 0;\n+\tconst unsigned int nstats\n+\t\t= (dev->data->nb_tx_queues + dev->data->nb_rx_queues) * NUM_SWSTATS_XSTATS;\n+\n+\tif (n < nstats)\n+\t\treturn nstats;\n+\n+\tfor (i = 0; i < dev->data->nb_rx_queues; i++) {\n+\t\t/* assumes that rte_eth_qsw_stats is at start of the queue structure */\n+\t\tconst struct rte_eth_qsw_stats *qstats = dev->data->rx_queues[i];\n+\n+\t\tif (qstats == NULL)\n+\t\t\tcontinue;\n+\n+\t\tfor (t = 0; t < NUM_SWSTATS_XSTATS; t++) {\n+\t\t\tconst uint64_t *valuep\n+\t\t\t\t= (const uint64_t *)((const char *)qstats\n+\t\t\t\t\t\t     + eth_swstats_strings[t].offset);\n+\n+\t\t\txstats[count].value = *valuep;\n+\t\t\txstats[count].id = count;\n+\t\t\t++count;\n+\t\t}\n+\t}\n+\n+\tfor (i = 0; i < dev->data->nb_tx_queues; i++) {\n+\t\tconst struct rte_eth_qsw_stats *qstats = dev->data->tx_queues[i];\n+\n+\t\tif (qstats == NULL)\n+\t\t\tcontinue;\n+\n+\t\tfor (t = 0; t < NUM_SWSTATS_XSTATS; t++) {\n+\t\t\tconst uint64_t *valuep\n+\t\t\t\t= (const uint64_t *)((const char *)qstats\n+\t\t\t\t\t\t     + eth_swstats_strings[t].offset);\n+\n+\t\t\txstats[count].value = *valuep;\n+\t\t\txstats[count].id = count;\n+\t\t\t++count;\n+\t\t}\n+\t}\n+\n+\treturn count;\n+}\ndiff --git a/lib/ethdev/ethdev_swstats.h b/lib/ethdev/ethdev_swstats.h\nnew file mode 100644\nindex 0000000000..6309107128\n--- /dev/null\n+++ b/lib/ethdev/ethdev_swstats.h\n@@ -0,0 +1,60 @@\n+/* SPDX-License-Identifier: BSD-3-Clause\n+ * Copyright (c) Stephen Hemminger <stephen@networkplumber.org>\n+ */\n+\n+#ifndef _RTE_ETHDEV_SWSTATS_H_\n+#define _RTE_ETHDEV_SWSTATS_H_\n+\n+#ifdef __cplusplus\n+extern \"C\" {\n+#endif\n+\n+#include <rte_stdatomic.h>\n+\n+#ifdef RTE_ARCH_64\n+typedef uint64_t eth_counter_t;\n+#else\n+typedef RTE_ATOMIC(uint64_t) eth_counter_t;\n+#endif\n+\n+struct rte_eth_qsw_stats {\n+\teth_counter_t\tpackets;\n+\teth_counter_t\tbytes;\n+\teth_counter_t\terrors;\n+\teth_counter_t\tmulticast;\n+\teth_counter_t\tbroadcast;\n+\t/* Size bins in array as RFC 2819, undersized [0], 64 [1], etc */\n+\teth_counter_t\tsize_bins[8];\n+};\n+\n+__rte_internal\n+void\n+rte_eth_qsw_update(struct rte_eth_qsw_stats *stats, const struct rte_mbuf *mbuf);\n+\n+__rte_internal\n+void\n+rte_eth_qsw_error_inc(struct rte_eth_qsw_stats *stats);\n+\n+__rte_internal\n+int\n+rte_eth_qsw_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);\n+\n+__rte_internal\n+int\n+rte_eth_qsw_stats_reset(struct rte_eth_dev *dev);\n+\n+__rte_internal\n+int\n+rte_eth_qsw_xstats_get_names(struct rte_eth_dev *dev,\n+\t\t\t\tstruct rte_eth_xstat_name *xstats_names,\n+\t\t\t\tunsigned int limit);\n+__rte_internal\n+int\n+rte_eth_qsw_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,\n+\t\t\t  unsigned int n);\n+\n+#ifdef __cplusplus\n+}\n+#endif\n+\n+#endif /* _RTE_ETHDEV_SWSTATS_H_ */\ndiff --git a/lib/ethdev/meson.build b/lib/ethdev/meson.build\nindex f1d2586591..7ce29a46d4 100644\n--- a/lib/ethdev/meson.build\n+++ b/lib/ethdev/meson.build\n@@ -3,6 +3,7 @@\n \n sources = files(\n         'ethdev_driver.c',\n+        'ethdev_swstats.c',\n         'ethdev_private.c',\n         'ethdev_profile.c',\n         'ethdev_trace_points.c',\n@@ -42,6 +43,7 @@ driver_sdk_headers += files(\n         'ethdev_driver.h',\n         'ethdev_pci.h',\n         'ethdev_vdev.h',\n+        'ethdev_swstats.h',\n )\n \n if is_linux\ndiff --git a/lib/ethdev/version.map b/lib/ethdev/version.map\nindex 79f6f5293b..32ebe5ea09 100644\n--- a/lib/ethdev/version.map\n+++ b/lib/ethdev/version.map\n@@ -358,4 +358,11 @@ INTERNAL {\n \trte_eth_switch_domain_alloc;\n \trte_eth_switch_domain_free;\n \trte_flow_fp_default_ops;\n+\n+\trte_eth_qsw_error_inc;\n+\trte_eth_qsw_stats_get;\n+\trte_eth_qsw_stats_reset;\n+\trte_eth_qsw_update;\n+\trte_eth_qsw_xstats_get;\n+\trte_eth_qsw_xstats_get_names;\n };\n",
    "prefixes": [
        "RFC",
        "1/3"
    ]
}