[3/6] sfxge(4): restrict the maximum number of RSS channels by the number of RSS buckets

[arybchik]

Summary

This is done because one has no point to have more channels since they
will be unused.

Submitted by: Ivan Malov <Ivan.Malov at oktetlabs.ru>
Sponsored by: Solarflare Communications, Inc.

Test Plan

Kernel build tested together with D6718 (with/without RSS enabled).
Correct number of queues is created in accordance with number of RSS
buckets.

head/sys/dev/sfxge/sfxge.c

+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (C) 2022 Wanpeng Qian <[e-mail]>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/ioccom.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/endian.h>
+
+#include "nvmecontrol.h"
+
+struct samsung_log_extended_smart
+{
+        uint8_t         kv[256];/* Key-Value pair */
+        uint32_t        lwaf;   /* Lifetime Write Amplification */
+        uint32_t        thwaf;  /* Trailing Hour Write Amplification Factor */
+        uint64_t        luw[2]; /* Lifetime User Writes */
+        uint64_t        lnw[2]; /* Lifetime NAND Writes */
+        uint64_t        lur[2]; /* Lifetime User Reads */
+        uint32_t        lrbc;   /* Lifetime Retired Block Count */
+        uint16_t        ct;     /* Current Temperature */
+        uint16_t        ch;     /* Capacitor Health */
+        uint32_t        luurb;  /* Lifetime Unused Reserved Block */
+        uint64_t        rrc;    /* Read Reclaim Count */
+        uint64_t        lueccc; /* Lifetime Uncorrectable ECC count */
+        uint32_t        lurb;   /* Lifetime Used Reserved Block */
+        uint64_t        poh[2]; /* Power on Hours */
+        uint64_t        npoc[2];/* Normal Power Off Count */
+        uint64_t        spoc[2];/* Sudden Power Off Count */
+        uint32_t        pi;     /* Performance Indicator */
+} __packed;
+
+static void
+print_samsung_extended_smart(const struct nvme_controller_data *cdata __unused, void *buf, uint32_t size __unused)
+{
+        struct samsung_log_extended_smart *temp = buf;
+        char cbuf[UINT128_DIG + 1];
+        uint8_t *walker = buf;
+        uint8_t *end = walker + 150;
+        const char *name;
+        uint64_t raw;
+        uint8_t normalized;
+
+        static struct kv_name kv[] =
+        {
+                { 0xab, "Lifetime Program Fail Count" },
+                { 0xac, "Lifetime Erase Fail Count" },
+                { 0xad, "Lifetime Wear Leveling Count" },
+                { 0xb8, "Lifetime End to End Error Count" },
+                { 0xc7, "Lifetime CRC Error Count" },
+                { 0xe2, "Media Wear %" },
+                { 0xe3, "Host Read %" },
+                { 0xe4, "Workload Timer" },
+                { 0xea, "Lifetime Thermal Throttle Status" },
+                { 0xf4, "Lifetime Phy Pages Written Count" },
+                { 0xf5, "Lifetime Data Units Written" },
+        };
+
+        printf("Extended SMART Information\n");
+        printf("=========================\n");
+        /*
+         * walker[0] = Key
+         * walker[1,2] = reserved
+         * walker[3] = Normalized Value
+         * walker[4] = reserved
+         * walker[5..10] = Little Endian Raw value
+         *      (or other represenations)
+         * walker[11] = reserved
+         */
+        while (walker < end) {
+                name = kv_lookup(kv, nitems(kv), *walker);
+                normalized = walker[3];
+                raw = le48dec(walker + 5);
+                switch (*walker){
+                case 0:
+                        break;
+                case 0xad:
+                        printf("%2X %-41s: %3d min: %u max: %u ave: %u\n",
+                            le16dec(walker), name, normalized,
+                            le16dec(walker + 5), le16dec(walker + 7), le16dec(walker + 9));
+                        break;
+                case 0xe2:
+                        printf("%2X %-41s: %3d %.3f%%\n",
+                            le16dec(walker), name, normalized,
+                            raw / 1024.0);
+                        break;
+                case 0xea:
+                        printf("%2X %-41s: %3d %d%% %d times\n",
+                            le16dec(walker), name, normalized,
+                            walker[5], le32dec(walker+6));
+                        break;
+                default:
+                        printf("%2X %-41s: %3d %ju\n",
+                            le16dec(walker), name, normalized,
+                            (uintmax_t)raw);
+                        break;
+                }
+                walker += 12;
+        }
+
+        printf("   Lifetime Write Amplification Factor      : %u\n", le32dec(&temp->lwaf));
+        printf("   Trailing Hour Write Amplification Factor : %u\n", le32dec(&temp->thwaf));
+        printf("   Lifetime User Writes                     : %s\n",
+            uint128_to_str(to128(temp->luw), cbuf, sizeof(cbuf)));
+        printf("   Lifetime NAND Writes                     : %s\n",
+            uint128_to_str(to128(temp->lnw), cbuf, sizeof(cbuf)));
+        printf("   Lifetime User Reads                      : %s\n",
+            uint128_to_str(to128(temp->lur), cbuf, sizeof(cbuf)));
+        printf("   Lifetime Retired Block Count             : %u\n", le32dec(&temp->lrbc));
+        printf("   Current Temperature                      : ");
+        print_temp(le16dec(&temp->ct));
+        printf("   Capacitor Health                         : %u\n", le16dec(&temp->ch));
+        printf("   Reserved Erase Block Count               : %u\n", le32dec(&temp->luurb));
+        printf("   Read Reclaim Count                       : %lu\n", le64dec(&temp->rrc));
+        printf("   Lifetime Uncorrectable ECC Count         : %lu\n", le64dec(&temp->lueccc));
+        printf("   Reallocated Block Count                  : %u\n", le32dec(&temp->lurb));
+        printf("   Power on Hours                           : %s\n",
+            uint128_to_str(to128(temp->poh), cbuf, sizeof(cbuf)));
+        printf("   Normal Power Off Count                   : %s\n",
+            uint128_to_str(to128(temp->npoc), cbuf, sizeof(cbuf)));
+        printf("   Sudden Power Off Count                   : %s\n",
+            uint128_to_str(to128(temp->spoc), cbuf, sizeof(cbuf)));
+        printf("   Performance Indicator                    : %u\n", le32dec(&temp->pi));
+}
+
+#define SAMSUNG_LOG_EXTEND_SMART 0xca
+
+NVME_LOGPAGE(samsung_extended_smart,
+    SAMSUNG_LOG_EXTEND_SMART,                "samsung", "Extended SMART Information",
+    print_samsung_extended_smart,       DEFAULT_SIZE);