net: shell: Add command to print information about net_pkt (601b9727) · Commits · Wenxi XU / zephyr

subsys/net/ip/net_shell.c

+98 −0

Original line number	Diff line number	Diff line
		@@ -3202,6 +3202,95 @@ wait_reply:
		#endif
		}

		static struct net_pkt get_net_pkt(const char ptr_str)
		{
		u8_t buf[sizeof(intptr_t)];
		intptr_t ptr = 0;
		size_t len;
		int i;

		if (ptr_str[0] == '0' && ptr_str[1] == 'x') {
		ptr_str += 2;
		}

		len = hex2bin(ptr_str, strlen(ptr_str), buf, sizeof(buf));
		if (!len) {
		return NULL;
		}

		for (i = len - 1; i >= 0; i--) {
		ptr \|= buf[i] << 8 * (len - 1 - i);
		}

		return (struct net_pkt *)ptr;
		}

		static void net_pkt_buffer_info(const struct shell shell, struct net_pkt pkt)
		{
		struct net_buf *buf = pkt->buffer;

		PR("net_pkt %p buffer chain:\n", pkt);
		PR("%p[%d]", pkt, atomic_get(&pkt->atomic_ref));

		if (buf) {
		PR("->");
		}

		while (buf) {
		PR("%p[%d/%u (%u)]",
		buf, atomic_get(&pkt->atomic_ref), buf->len, buf->size);

		buf = buf->frags;
		if (buf) {
		PR("->");
		}
		}

		PR("\n");
		}

		static void net_pkt_buffer_hexdump(const struct shell *shell,
		struct net_pkt *pkt)
		{
		struct net_buf *buf = pkt->buffer;
		int i = 0;

		if (!buf \|\| buf->ref == 0) {
		return;
		}

		PR("net_pkt %p buffer chain hexdump:\n", pkt);

		while (buf) {
		PR("net_buf[%d] %p\n", i++, buf);
		shell_hexdump(shell, buf->data, buf->len);
		buf = buf->frags;
		}
		}

		static int cmd_net_pkt(const struct shell shell, size_t argc, char argv[])
		{
		if (argv[1]) {
		struct net_pkt *pkt;

		pkt = get_net_pkt(argv[1]);
		if (!pkt) {
		PR_ERROR("Invalid ptr value (%s). "
		"Example: 0x01020304\n", argv[1]);
		return -ENOEXEC;
		}

		net_pkt_buffer_info(shell, pkt);
		PR("\n");
		net_pkt_buffer_hexdump(shell, pkt);
		} else {
		PR_INFO("Pointer value must be given.\n");
		return -ENOEXEC;
		}

		return 0;
		}

		static int cmd_net_ppp_ping(const struct shell *shell, size_t argc,
		char *argv[])
		{
		@@ -4387,6 +4476,14 @@ SHELL_STATIC_SUBCMD_SET_CREATE(net_cmd_ping,
		SHELL_SUBCMD_SET_END
		);

		SHELL_STATIC_SUBCMD_SET_CREATE(net_cmd_pkt,
		SHELL_CMD(--help, NULL,
		"'net pkt [ptr in hex]' "
		"Print information about given net_pkt",
		cmd_net_pkt),
		SHELL_SUBCMD_SET_END
		);

		SHELL_STATIC_SUBCMD_SET_CREATE(net_commands,
		SHELL_CMD(allocs, NULL, "Print network memory allocations.",
		cmd_net_allocs),
		@@ -4410,6 +4507,7 @@ SHELL_STATIC_SUBCMD_SET_CREATE(net_commands,
		SHELL_CMD(nbr, &net_cmd_nbr, "Print neighbor information.",
		cmd_net_nbr),
		SHELL_CMD(ping, &net_cmd_ping, "Ping a network host.", cmd_net_ping),
		SHELL_CMD(pkt, &net_cmd_pkt, "net_pkt information.", cmd_net_pkt),
		SHELL_CMD(ppp, &net_cmd_ppp, "PPP information.", cmd_net_ppp_status),
		SHELL_CMD(resume, NULL, "Resume a network interface", cmd_net_resume),
		SHELL_CMD(route, NULL, "Show network route.", cmd_net_route),

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