| /* |
| ************************************************************************** |
| * Copyright (c) 2019-2020, 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_tx_rx_common.h" |
| #include "nss_pvxlan_stats.h" |
| |
| DEFINE_SPINLOCK(nss_pvxlan_tunnel_stats_debug_lock); |
| struct nss_pvxlan_tunnel_stats_debug nss_pvxlan_tunnel_debug_stats[NSS_PVXLAN_MAX_INTERFACES]; |
| |
| /* |
| * nss_pvxlan_tunnel_stats_debug_str |
| * PVxLAN statistics strings for nss tunnel stats |
| */ |
| static int8_t *nss_pvxlan_tunnel_stats_debug_str[NSS_PVXLAN_MAX_INTERFACES] = { |
| "rx_pkts", |
| "rx_bytes", |
| "tx_pkts", |
| "tx_bytes", |
| "rx_queue_0_dropped", |
| "rx_queue_1_dropped", |
| "rx_queue_2_dropped", |
| "rx_queue_3_dropped", |
| "MAC DB look up failed", |
| "UDP ENCAP look up failed", |
| "dropped packet malformed", |
| "dropped next node queue is full", |
| "dropped headroom insufficient", |
| "dropped version mismatch", |
| "dropped zero sized packet", |
| "dropped pbuf alloc failed", |
| "dropped linearization failed" |
| }; |
| |
| /* |
| * nss_pvxlan_tunnel_stats_debug_get() |
| * Get PVxLAN Tunnel statitics. |
| */ |
| static void nss_pvxlan_tunnel_stats_debug_get(struct nss_pvxlan_tunnel_stats_debug *stats) |
| { |
| uint32_t i; |
| |
| if (!stats) { |
| nss_warning("No memory to copy pvxlan tunnel stats"); |
| return; |
| } |
| |
| spin_lock_bh(&nss_pvxlan_tunnel_stats_debug_lock); |
| for (i = 0; i < NSS_PVXLAN_MAX_INTERFACES; i++) { |
| if (nss_pvxlan_tunnel_debug_stats[i].valid) { |
| memcpy(stats, &nss_pvxlan_tunnel_debug_stats[i], |
| sizeof(struct nss_pvxlan_tunnel_stats_debug)); |
| stats++; |
| } |
| } |
| spin_unlock_bh(&nss_pvxlan_tunnel_stats_debug_lock); |
| } |
| |
| /* |
| * nss_pvxlan_stats_read() |
| * Read PVxLAN Tunnel statistics |
| */ |
| static ssize_t nss_pvxlan_stats_read(struct file *fp, char __user *ubuf, |
| size_t sz, loff_t *ppos) |
| { |
| uint32_t max_output_lines = 2 + (NSS_PVXLAN_MAX_INTERFACES |
| * (NSS_PVXLAN_TUNNEL_STATS_MAX + 2)) + 2; |
| size_t size_al = NSS_STATS_MAX_STR_LENGTH * max_output_lines; |
| size_t size_wr = 0; |
| ssize_t bytes_read = 0; |
| struct net_device *dev; |
| uint32_t id, i; |
| struct nss_pvxlan_tunnel_stats_debug *pvxlan_tunnel_stats = NULL; |
| |
| char *lbuf = kzalloc(size_al, GFP_KERNEL); |
| if (unlikely(lbuf == NULL)) { |
| nss_warning("Could not allocate memory for local statistics buffer"); |
| return 0; |
| } |
| |
| pvxlan_tunnel_stats = kzalloc((sizeof(struct nss_pvxlan_tunnel_stats_debug) |
| * NSS_PVXLAN_MAX_INTERFACES), GFP_KERNEL); |
| if (unlikely(!pvxlan_tunnel_stats)) { |
| nss_warning("Could not allocate memory for populating PVxLAN stats"); |
| kfree(lbuf); |
| return 0; |
| } |
| |
| /* |
| * Get all stats |
| */ |
| nss_pvxlan_tunnel_stats_debug_get(pvxlan_tunnel_stats); |
| |
| /* |
| * Tunnel stats |
| */ |
| size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, |
| "\n PVxLAN Tunnel stats start:\n\n"); |
| |
| for (id = 0; id < NSS_PVXLAN_MAX_INTERFACES; id++) { |
| if (!pvxlan_tunnel_stats[id].valid) |
| break; |
| |
| dev = dev_get_by_index(&init_net, pvxlan_tunnel_stats[id].if_index); |
| if (likely(dev)) { |
| size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, |
| "%d. nss interface id=%d, netdevice=%s\n", |
| id, pvxlan_tunnel_stats[id].if_num, |
| dev->name); |
| dev_put(dev); |
| } else { |
| size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, |
| "%d. nss interface id=%d\n", id, |
| pvxlan_tunnel_stats[id].if_num); |
| } |
| |
| for (i = 0; i < NSS_PVXLAN_TUNNEL_STATS_MAX; i++) { |
| size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, |
| "\t%s = %llu\n", |
| nss_pvxlan_tunnel_stats_debug_str[i], |
| pvxlan_tunnel_stats[id].stats[i]); |
| } |
| |
| size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, "\n"); |
| } |
| |
| size_wr += scnprintf(lbuf + size_wr, size_al - size_wr, |
| "\n PVxLAN Tunnel stats end\n"); |
| bytes_read = simple_read_from_buffer(ubuf, sz, ppos, lbuf, size_wr); |
| |
| kfree(pvxlan_tunnel_stats); |
| kfree(lbuf); |
| return bytes_read; |
| } |
| |
| /* |
| * nss_pvxlan_stats_sync() |
| * Sync function for pvxlan statistics |
| */ |
| void nss_pvxlan_stats_sync(struct nss_ctx_instance *nss_ctx, struct nss_pvxlan_stats_msg *stats_msg, uint32_t if_num) |
| { |
| uint32_t i; |
| struct nss_pvxlan_tunnel_stats_debug *s = NULL; |
| |
| NSS_VERIFY_CTX_MAGIC(nss_ctx); |
| |
| spin_lock_bh(&nss_pvxlan_tunnel_stats_debug_lock); |
| for (i = 0; i < NSS_PVXLAN_MAX_INTERFACES; i++) { |
| if (nss_pvxlan_tunnel_debug_stats[i].if_num == if_num) { |
| s = &nss_pvxlan_tunnel_debug_stats[i]; |
| break; |
| } |
| } |
| |
| if (!s) { |
| spin_unlock_bh(&nss_pvxlan_tunnel_stats_debug_lock); |
| nss_warning("%px: Tunnel not found: %u", nss_ctx, if_num); |
| return; |
| } |
| |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_RX_PKTS] += stats_msg->node_stats.rx_packets; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_RX_BYTES] += stats_msg->node_stats.rx_bytes; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_TX_PKTS] += stats_msg->node_stats.tx_packets; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_TX_BYTES] += stats_msg->node_stats.tx_bytes; |
| for (i = 0; i < NSS_MAX_NUM_PRI; i++) { |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_RX_QUEUE_0_DROPPED + i] += stats_msg->node_stats.rx_dropped[i]; |
| } |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_MAC_DB_LOOKUP_FAILED] += |
| stats_msg->mac_db_lookup_failed; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_UDP_ENCAP_LOOKUP_FAILED] += |
| stats_msg->udp_encap_lookup_failed; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_MALFORMED] += |
| stats_msg->dropped_malformed; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_NEXT_NODE_QUEUE_FULL] += |
| stats_msg->dropped_next_node_queue_full; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_HEADROOM_INSUFFICIENT] += |
| stats_msg->dropped_hroom; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_VERSION_MISMATCH] += |
| stats_msg->dropped_ver_mis; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_ZERO_SIZED_PACKET] += |
| stats_msg->dropped_zero_sized_packet; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_PBUF_ALLOC_FAILED] += |
| stats_msg->dropped_pbuf_alloc_failed; |
| s->stats[NSS_PVXLAN_TUNNEL_STATS_DROP_LINEAR_FAILED] += |
| stats_msg->dropped_linear_failed; |
| spin_unlock_bh(&nss_pvxlan_tunnel_stats_debug_lock); |
| } |
| |
| /* |
| * nss_pvxlan_stats_ops |
| */ |
| NSS_STATS_DECLARE_FILE_OPERATIONS(pvxlan) |
| |
| /* |
| * nss_pvxlan_stats_dentry_create() |
| * Create gre tunnel statistics debug entry. |
| */ |
| void nss_pvxlan_stats_dentry_create(void) |
| { |
| nss_stats_create_dentry("pvxlan", &nss_pvxlan_stats_ops); |
| } |