| /* |
| ************************************************************************** |
| * 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_stats.h" |
| #include "nss_core.h" |
| #include "nss_rmnet_rx_stats.h" |
| |
| /* |
| * Data structure that holds the virtual interface context. |
| */ |
| extern struct nss_rmnet_rx_handle *rmnet_rx_handle[]; |
| |
| /* |
| * Spinlock to protect the global data structure virt_handle. |
| */ |
| extern spinlock_t nss_rmnet_rx_lock; |
| |
| /* |
| * nss_rmnet_rx_stats_str |
| * rmnet_rx interface stats strings |
| */ |
| struct nss_stats_info nss_rmnet_rx_stats_str[NSS_RMNET_RX_STATS_MAX] = { |
| {"rx_packets" , NSS_STATS_TYPE_COMMON}, |
| {"rx_bytes" , NSS_STATS_TYPE_COMMON}, |
| {"tx_packets" , NSS_STATS_TYPE_COMMON}, |
| {"tx_bytes" , NSS_STATS_TYPE_COMMON}, |
| {"rx_queue_0_dropped" , NSS_STATS_TYPE_DROP}, |
| {"rx_queue_1_dropped" , NSS_STATS_TYPE_DROP}, |
| {"rx_queue_2_dropped" , NSS_STATS_TYPE_DROP}, |
| {"rx_queue_3_dropped" , NSS_STATS_TYPE_DROP}, |
| {"enqueue failed" , NSS_STATS_TYPE_DROP}, |
| {"no available channel" , NSS_STATS_TYPE_SPECIAL}, |
| {"linear pbuf count" , NSS_STATS_TYPE_SPECIAL}, |
| {"no pbuf to linear" , NSS_STATS_TYPE_SPECIAL}, |
| {"no enough room" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[0]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[1]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[2]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[3]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[4]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[5]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[6]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[7]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[8]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[9]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[10]" , NSS_STATS_TYPE_SPECIAL}, |
| {"channel[11]" , NSS_STATS_TYPE_SPECIAL}, |
| {"DMA full" , NSS_STATS_TYPE_SPECIAL} |
| }; |
| |
| /* |
| * nss_rmnet_rx_stats_get() |
| * Get rmnet_rx interface stats by interface number. |
| */ |
| static bool nss_rmnet_rx_stats_get(struct nss_ctx_instance *nss_ctx, uint32_t if_num, uint64_t *stats, bool is_base) |
| { |
| int i; |
| uint32_t if_num_curr = if_num; |
| uint64_t *stats_local; |
| |
| if_num = if_num - NSS_DYNAMIC_IF_START; |
| |
| spin_lock_bh(&nss_rmnet_rx_lock); |
| if (!rmnet_rx_handle[if_num]) { |
| spin_unlock_bh(&nss_rmnet_rx_lock); |
| return false; |
| } |
| |
| if (if_num_curr == rmnet_rx_handle[if_num]->if_num_n2h) { |
| stats_local = rmnet_rx_handle[if_num]->stats_n2h; |
| } else { |
| stats_local = rmnet_rx_handle[if_num]->stats_h2n; |
| } |
| |
| for (i = 0; i < NSS_RMNET_RX_STATS_MAX; i++) { |
| stats[i] = stats_local[i]; |
| } |
| spin_unlock_bh(&nss_rmnet_rx_lock); |
| |
| return true; |
| } |
| |
| /* |
| * nss_rmnet_rx_stats_read() |
| * Read rmnet_rx statistics |
| */ |
| static ssize_t nss_rmnet_rx_stats_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos) |
| { |
| struct nss_stats_data *data = fp->private_data; |
| struct nss_ctx_instance *nss_ctx = nss_rmnet_rx_get_context(); |
| int32_t if_num = NSS_DYNAMIC_IF_START; |
| int32_t max_if_num = if_num + NSS_MAX_DYNAMIC_INTERFACES; |
| uint32_t max_output_lines = ((NSS_RMNET_RX_STATS_MAX + 3) * NSS_MAX_DYNAMIC_INTERFACES) |
| + NSS_STATS_EXTRA_OUTPUT_LINES; |
| size_t size_al = NSS_STATS_MAX_STR_LENGTH * max_output_lines; |
| size_t size_wr = 0; |
| ssize_t bytes_read = 0; |
| uint64_t *stats_shadow; |
| char *lbuf = kzalloc(size_al, GFP_KERNEL); |
| if (unlikely(!lbuf)) { |
| nss_warning("%px: Could not allocate memory for local statistics buffer", data); |
| return 0; |
| } |
| |
| stats_shadow = kzalloc(NSS_RMNET_RX_STATS_MAX * sizeof(uint64_t), GFP_KERNEL); |
| if (unlikely(!stats_shadow)) { |
| nss_warning("%px: Could not allocate memory for local shadow buffer", data); |
| kfree(lbuf); |
| return 0; |
| } |
| |
| if (data) { |
| if_num = data->if_num; |
| } |
| |
| if (if_num > max_if_num) { |
| return 0; |
| } |
| |
| size_wr += nss_stats_banner(lbuf, size_wr, size_al, "rmnet_rx", NSS_STATS_SINGLE_CORE); |
| |
| /* |
| * Interface statistics for all interfaces. |
| */ |
| for (; if_num < max_if_num; if_num++) { |
| |
| if (!nss_rmnet_rx_stats_get(nss_ctx, if_num, stats_shadow, false)) { |
| continue; |
| } |
| |
| size_wr += nss_stats_print("rmnet_rx", "interface", if_num, |
| nss_rmnet_rx_stats_str, stats_shadow, NSS_RMNET_RX_STATS_MAX, |
| lbuf, size_wr, size_al); |
| } |
| |
| bytes_read = simple_read_from_buffer(ubuf, sz, ppos, lbuf, strlen(lbuf)); |
| kfree(lbuf); |
| kfree(stats_shadow); |
| |
| return bytes_read; |
| } |
| |
| /* |
| * nss_rmnet_rx_stats_ops |
| */ |
| NSS_STATS_DECLARE_FILE_OPERATIONS(rmnet_rx) |
| |
| /* |
| * nss_rmnet_rx_stats_dentry_create() |
| * Create rmnet_rx statistics debug entry. |
| */ |
| void nss_rmnet_rx_stats_dentry_create(void) |
| { |
| nss_stats_create_dentry("rmnet_rx", &nss_rmnet_rx_stats_ops); |
| } |
| |
| /* |
| * nss_rmnet_rx_stats_sync() |
| * Sync stats from the NSS FW |
| */ |
| void nss_rmnet_rx_stats_sync(struct nss_rmnet_rx_handle *handle, |
| struct nss_rmnet_rx_stats *nwis, uint32_t if_num) |
| { |
| int i; |
| uint64_t *stats; |
| spin_lock_bh(&nss_rmnet_rx_lock); |
| if (if_num == handle->if_num_n2h) { |
| stats = handle->stats_n2h; |
| } else { |
| stats = handle->stats_h2n; |
| } |
| |
| stats[NSS_RMNET_RX_STATS_RX_PKTS] += nwis->node_stats.rx_packets; |
| stats[NSS_RMNET_RX_STATS_RX_BYTES] += nwis->node_stats.rx_bytes; |
| stats[NSS_RMNET_RX_STATS_TX_PKTS] += nwis->node_stats.tx_packets; |
| stats[NSS_RMNET_RX_STATS_TX_BYTES] += nwis->node_stats.tx_bytes; |
| |
| for (i = 0; i < NSS_MAX_NUM_PRI; i++) { |
| stats[NSS_RMNET_RX_STATS_QUEUE_0_DROPPED + i] += nwis->node_stats.rx_dropped[i]; |
| } |
| |
| stats[NSS_RMNET_RX_STATS_ENQUEUE_FAILED] += nwis->enqueue_failed; |
| stats[NSS_RMNET_RX_STATS_NO_AVAIL_CHANNEL] += nwis->no_avail_channel; |
| stats[NSS_RMNET_RX_STATS_NUM_LINEAR_PBUF] += nwis->num_linear_pbuf; |
| stats[NSS_RMNET_RX_STATS_NO_PBUF_TO_LINEAR] += nwis->no_pbuf_to_linear; |
| stats[NSS_RMNET_RX_STATS_NO_ENOUGH_ROOM] += nwis->no_enough_room; |
| |
| for (i = 0; i < NSS_RMNET_RX_CHANNEL_MAX; i++) { |
| stats[NSS_RMNET_RX_STATS_USING_CHANNEL0 + i] += nwis->using_channel[i]; |
| } |
| |
| stats[NSS_RMNET_RX_STATS_DMA_FAILED] += nwis->dma_failed; |
| spin_unlock_bh(&nss_rmnet_rx_lock); |
| } |