| /* |
| ************************************************************************** |
| * Copyright (c) 2021, 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_udp_st_stats.h" |
| #include "nss_udp_st_strings.h" |
| |
| uint32_t nss_udp_st_errors[NSS_UDP_ST_ERROR_MAX]; |
| uint32_t nss_udp_st_stats_time[NSS_UDP_ST_TEST_MAX][NSS_UDP_ST_STATS_TIME_MAX]; |
| |
| /* |
| * nss_udp_st_stats_read() |
| * Read UDP_ST stats. |
| */ |
| static ssize_t nss_udp_st_stats_read(struct file *fp, char __user *ubuf, size_t sz, loff_t *ppos) |
| { |
| /* |
| * Max output lines = #stats * NSS_MAX_CORES + |
| * few blank lines for banner printing + Number of Extra outputlines for future reference to add new stats |
| */ |
| uint32_t max_output_lines = NSS_STATS_NODE_MAX + NSS_UDP_ST_ERROR_MAX + 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; |
| uint32_t i; |
| |
| char *lbuf = kzalloc(size_al, GFP_KERNEL); |
| if (unlikely(lbuf == NULL)) { |
| nss_warning("Could not allocate memory for local statistics buffer"); |
| return 0; |
| } |
| |
| /* |
| * Note: The assumption here is that we do not have more than 64 stats. |
| */ |
| stats_shadow = kzalloc(64 * 8, GFP_KERNEL); |
| if (unlikely(stats_shadow == NULL)) { |
| nss_warning("Could not allocate memory for local shadow buffer"); |
| kfree(lbuf); |
| return 0; |
| } |
| |
| size_wr += nss_stats_banner(lbuf, size_wr, size_al, "udp_st", NSS_STATS_SINGLE_CORE); |
| |
| size_wr += nss_stats_fill_common_stats(NSS_UDP_ST_INTERFACE, NSS_STATS_SINGLE_INSTANCE, lbuf, size_wr, size_al, "udp_st"); |
| |
| /* |
| * Error stats |
| */ |
| spin_lock_bh(&nss_top_main.stats_lock); |
| for (i = 0; (i < NSS_UDP_ST_ERROR_MAX); i++) { |
| stats_shadow[i] = nss_udp_st_errors[i]; |
| } |
| spin_unlock_bh(&nss_top_main.stats_lock); |
| size_wr += nss_stats_print("udp_st", "udp_st error stats" |
| , NSS_STATS_SINGLE_INSTANCE |
| , nss_udp_st_strings_error_stats |
| , stats_shadow |
| , NSS_UDP_ST_ERROR_MAX |
| , lbuf, size_wr, size_al); |
| |
| /* |
| * Rx time stats |
| */ |
| spin_lock_bh(&nss_top_main.stats_lock); |
| for (i = 0; (i < NSS_UDP_ST_STATS_TIME_MAX); i++) { |
| stats_shadow[i] = nss_udp_st_stats_time[NSS_UDP_ST_TEST_RX][i]; |
| } |
| spin_unlock_bh(&nss_top_main.stats_lock); |
| size_wr += nss_stats_print("udp_st", "udp_st Rx time stats (ms)" |
| , NSS_STATS_SINGLE_INSTANCE |
| , nss_udp_st_strings_rx_time_stats |
| , stats_shadow |
| , NSS_UDP_ST_STATS_TIME_MAX |
| , lbuf, size_wr, size_al); |
| |
| /* |
| * Tx time stats |
| */ |
| spin_lock_bh(&nss_top_main.stats_lock); |
| for (i = 0; (i < NSS_UDP_ST_STATS_TIME_MAX); i++) { |
| stats_shadow[i] = nss_udp_st_stats_time[NSS_UDP_ST_TEST_TX][i]; |
| } |
| spin_unlock_bh(&nss_top_main.stats_lock); |
| size_wr += nss_stats_print("udp_st", "udp_st Tx time stats (ms)" |
| , NSS_STATS_SINGLE_INSTANCE |
| , nss_udp_st_strings_tx_time_stats |
| , stats_shadow |
| , NSS_UDP_ST_STATS_TIME_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_udp_st_stats_ops. |
| */ |
| NSS_STATS_DECLARE_FILE_OPERATIONS(udp_st); |
| |
| /* |
| * nss_udp_st_stats_dentry_create() |
| * Create udp_st statistics debug entry. |
| */ |
| void nss_udp_st_stats_dentry_create(void) |
| { |
| nss_stats_create_dentry("udp_st", &nss_udp_st_stats_ops); |
| } |
| |
| /* |
| * nss_udp_st_stats_reset() |
| * Reset the udp_st statistics. |
| */ |
| void nss_udp_st_stats_reset(uint32_t if_num) |
| { |
| uint32_t i; |
| |
| /* |
| * Reset common node stats. |
| */ |
| nss_stats_reset_common_stats(if_num); |
| |
| /* |
| * Reset error stats. |
| */ |
| spin_lock_bh(&nss_top_main.stats_lock); |
| for (i = 0; i < NSS_UDP_ST_ERROR_MAX; i++) { |
| nss_udp_st_errors[i] = 0; |
| } |
| spin_unlock_bh(&nss_top_main.stats_lock); |
| } |
| |
| /* |
| * nss_udp_st_stats_sync() |
| * Handle the syncing of UDP_ST node statistics. |
| */ |
| void nss_udp_st_stats_sync(struct nss_ctx_instance *nss_ctx, struct nss_udp_st_stats *nus) |
| { |
| struct nss_top_instance *nss_top = nss_ctx->nss_top; |
| uint32_t i, j; |
| |
| spin_lock_bh(&nss_top->stats_lock); |
| |
| nss_top->stats_node[NSS_UDP_ST_INTERFACE][NSS_STATS_NODE_RX_PKTS] += nus->nstats.node_stats.rx_packets; |
| nss_top->stats_node[NSS_UDP_ST_INTERFACE][NSS_STATS_NODE_RX_BYTES] += nus->nstats.node_stats.rx_bytes; |
| nss_top->stats_node[NSS_UDP_ST_INTERFACE][NSS_STATS_NODE_TX_PKTS] += nus->nstats.node_stats.tx_packets; |
| nss_top->stats_node[NSS_UDP_ST_INTERFACE][NSS_STATS_NODE_TX_BYTES] += nus->nstats.node_stats.tx_bytes; |
| |
| for (i = 0; i < NSS_UDP_ST_ERROR_MAX; i++) { |
| nss_udp_st_errors[i] += nus->nstats.errors[i]; |
| } |
| |
| for (i = 0; i < NSS_UDP_ST_TEST_MAX; i++) { |
| for (j = 0; j < NSS_UDP_ST_STATS_TIME_MAX; j++) { |
| nss_udp_st_stats_time[i][j] = nus->time_stats[i][j]; |
| } |
| } |
| spin_unlock_bh(&nss_top->stats_lock); |
| } |