ab0ddc0bbe
Show information whether PMTU is enabled or not. Show pmtu destination cache content with "net pmtu" command. The "net pmtu flush" can be used to clear the cache. Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
/*
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* Copyright (c) 2024 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/logging/log.h>
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LOG_MODULE_DECLARE(net_shell);
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#include "net_shell_private.h"
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#include "pmtu.h"
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#if !defined(CONFIG_NET_PMTU)
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static void print_pmtu_error(const struct shell *sh)
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{
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PR_INFO("Set %s to enable %s support.\n",
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"CONFIG_NET_IPV6_PMTU or CONFIG_NET_IPV4_PMTU", "PMTU");
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}
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#endif
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#if defined(CONFIG_NET_PMTU)
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static void pmtu_cb(struct net_pmtu_entry *entry, void *user_data)
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{
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struct net_shell_user_data *data = user_data;
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const struct shell *sh = data->sh;
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int *count = data->user_data;
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#if defined(CONFIG_NET_IPV4) && defined(CONFIG_NET_IPV6)
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/* Use the value of NET_IPV6_ADDR_LEN */
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#define ADDR_STR_LEN 40
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#elif defined(CONFIG_NET_IPV4)
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#define ADDR_STR_LEN INET_ADDRSTRLEN
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#elif defined(CONFIG_NET_IPV6)
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#define ADDR_STR_LEN 40
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#else
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#define ADDR_STR_LEN INET_ADDRSTRLEN
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#endif
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if (!entry->in_use) {
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return;
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}
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if (*count == 0) {
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PR(" %" STRINGIFY(ADDR_STR_LEN) "s MTU Age (sec)\n",
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"Destination Address");
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}
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PR("[%2d] %" STRINGIFY(ADDR_STR_LEN) "s %5d %d\n", *count + 1,
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net_sprint_addr(entry->dst.family, (void *)&entry->dst.in_addr),
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entry->mtu,
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(k_uptime_get_32() - entry->last_update) / 1000U);
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(*count)++;
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}
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#endif /* CONFIG_NET_PMTU */
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static int cmd_net_pmtu(const struct shell *sh, size_t argc, char *argv[])
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{
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#if defined(CONFIG_NET_PMTU)
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struct net_shell_user_data user_data;
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int arg = 1;
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#endif
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ARG_UNUSED(argc);
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#if defined(CONFIG_NET_PMTU)
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if (!argv[arg]) {
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/* PMTU destination cache content */
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int count = 0;
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user_data.sh = sh;
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user_data.user_data = &count;
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(void)net_pmtu_foreach(pmtu_cb, &user_data);
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if (count == 0) {
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PR("PMTU destination cache is empty.\n");
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}
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}
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#else
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print_pmtu_error(sh);
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#endif
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return 0;
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}
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static int cmd_net_pmtu_flush(const struct shell *sh, size_t argc, char *argv[])
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{
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ARG_UNUSED(argc);
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ARG_UNUSED(argv);
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#if defined(CONFIG_NET_PMTU)
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PR("Flushing PMTU destination cache.\n");
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net_pmtu_init();
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#else
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print_pmtu_error(sh);
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#endif
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return 0;
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}
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SHELL_STATIC_SUBCMD_SET_CREATE(net_cmd_pmtu,
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SHELL_CMD(flush, NULL,
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"Remove all entries from PMTU destination cache.",
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cmd_net_pmtu_flush),
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SHELL_SUBCMD_SET_END
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);
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SHELL_SUBCMD_ADD((net), pmtu, &net_cmd_pmtu,
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"Show PMTU information.",
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cmd_net_pmtu, 1, 0);
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