| /* |
| ************************************************************************** |
| * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| ************************************************************************** |
| */ |
| |
| #include "nss_core.h" |
| #include "nss_tunipip6.h" |
| #include "nss_stats.h" |
| #include "nss_tunipip6_stats.h" |
| |
| #define NSS_TUNIPIP6_STATS_MAX_LINES (NSS_STATS_NODE_MAX + 32) |
| /**< Maximum number of lines for tunipip6 statistics dump. */ |
| #define NSS_TUNIPIP6_STATS_SIZE_PER_IF (NSS_STATS_MAX_STR_LENGTH * NSS_TUNIPIP6_STATS_MAX_LINES) |
| /**< Total number of statistics per tunipip6 interface. */ |
| |
| /* |
| * nss_tunipip6_stats_read() |
| * Read tunipip6 common node statistics |
| */ |
| static ssize_t nss_tunipip6_stats_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos) |
| { |
| struct nss_ctx_instance *nss_ctx = nss_tunipip6_get_context(); |
| enum nss_dynamic_interface_type type; |
| ssize_t bytes_read = 0; |
| size_t len = 0, size; |
| uint32_t if_num; |
| char *buf; |
| |
| /* |
| * Allocate memory for NSS_TUNIPIP6_TUNNEL_MAX tunnels and one |
| * static interface. |
| */ |
| size = NSS_TUNIPIP6_STATS_SIZE_PER_IF * (NSS_TUNIPIP6_TUNNEL_MAX << 1) + 1; |
| buf = vzalloc(size); |
| if (!buf) { |
| nss_warning("tunipip6: Could not allocate memory for local statistics buffer\n"); |
| return 0; |
| } |
| |
| len += nss_stats_banner(buf, len, size, "tunipip6", NSS_STATS_SINGLE_CORE); |
| |
| len += scnprintf(buf + len, size - len, "\nBase node if_num:%03u", NSS_TUNIPIP6_INTERFACE); |
| len += scnprintf(buf + len, size - len, "\n-------------------\n"); |
| len += nss_stats_fill_common_stats(NSS_TUNIPIP6_INTERFACE, NSS_STATS_SINGLE_INSTANCE, buf, len, size - len, "tunipip6"); |
| |
| /* |
| * Common node stats for each tunipip6 dynamic interface. |
| */ |
| for (if_num = NSS_DYNAMIC_IF_START; if_num < NSS_DYNAMIC_IF_START + NSS_MAX_DYNAMIC_INTERFACES; if_num++) { |
| type = nss_dynamic_interface_get_type(nss_ctx, if_num); |
| switch (type) { |
| case NSS_DYNAMIC_INTERFACE_TYPE_TUNIPIP6_INNER: |
| len += scnprintf(buf + len, size - len, "\nInner if_num:%03u", if_num); |
| break; |
| |
| case NSS_DYNAMIC_INTERFACE_TYPE_TUNIPIP6_OUTER: |
| len += scnprintf(buf + len, size - len, "\nOuter if_num:%03u", if_num); |
| break; |
| |
| default: |
| continue; |
| } |
| |
| len += scnprintf(buf + len, size - len, "\n-------------------\n"); |
| len += nss_stats_fill_common_stats(if_num, NSS_STATS_SINGLE_INSTANCE, buf, len, size - len, "tunipip6"); |
| } |
| |
| bytes_read = simple_read_from_buffer(ubuf, sz, ppos, buf, len); |
| vfree(buf); |
| return bytes_read; |
| } |
| |
| /* |
| * nss_tunipip6_stats_sync() |
| * Update tunipip6 common node statistics. |
| */ |
| void nss_tunipip6_stats_sync(struct nss_ctx_instance *nss_ctx, struct nss_tunipip6_msg *ntm) |
| { |
| struct nss_top_instance *nss_top = nss_ctx->nss_top; |
| struct nss_tunipip6_stats_sync_msg *msg_stats = &ntm->msg.stats; |
| uint64_t i, *dest; |
| uint32_t *src; |
| |
| spin_lock_bh(&nss_top->stats_lock); |
| |
| /* |
| * Update common node stats |
| */ |
| dest = nss_top->stats_node[ntm->cm.interface]; |
| src = &msg_stats->node_stats.rx_packets; |
| for (i = NSS_STATS_NODE_RX_PKTS; i <= NSS_STATS_NODE_RX_QUEUE_3_DROPPED; i++) { |
| *dest++ = *src++; |
| } |
| |
| spin_unlock_bh(&nss_top->stats_lock); |
| |
| } |
| |
| /* |
| * nss_tunipip6_stats_ops |
| */ |
| NSS_STATS_DECLARE_FILE_OPERATIONS(tunipip6) |
| |
| /* |
| * nss_tunipip6_stats_dentry_create() |
| * Create tunipip6 statistics debug entry. |
| */ |
| void nss_tunipip6_stats_dentry_create(void) |
| { |
| nss_stats_create_dentry("tunipip6", &nss_tunipip6_stats_ops); |
| } |