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6b914d5596
Add Kconfig symbol LWIP_ICMP_SHOW_UNREACH which, when enabled, prints a message to the console upon reception of ICMP unreachable messages. For example: $ make qemu_arm64_lwip_defconfig $ qemu-system-aarch64 -M virt -cpu max -nographic -bios u-boot.bin [...] => dhcp DHCP client bound to address 10.0.2.15 (0 ms) => tftp 192.168.0.100:69:Image Using virtio-net#32 device TFTP from server 192.168.0.100; our IP address is 10.0.2.15 Filename 'Image'. Load address: 0x40200000 Loading: ICMP destination unreachable (host unreachable) from 192.168.0.16 Timeout! => tftp 192.168.0.16:69:Image Using virtio-net#32 device TFTP from server 192.168.0.16; our IP address is 10.0.2.15 Filename 'Image'. Load address: 0x40200000 Loading: ICMP destination unreachable (port unreachable) from 192.168.0.16 Timeout! => Submitted upstream as https://github.com/lwip-tcpip/lwip/pull/73. Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
39 lines
878 B
C
39 lines
878 B
C
// SPDX-License-Identifier: GPL-2.0+
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/* Copyright (C) 2025 Linaro Ltd. */
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#include <lwip/icmp.h>
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#include <lwip/ip4_addr.h>
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#include <lwip/pbuf.h>
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#include <lwip/prot/ip4.h>
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static const char *code_to_str(int code)
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{
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switch (code) {
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case ICMP_DUR_NET:
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return "network unreachable";
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case ICMP_DUR_HOST:
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return "host unreachable";
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case ICMP_DUR_PROTO:
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return "protocol unreachable";
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case ICMP_DUR_PORT:
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return "port unreachable";
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case ICMP_DUR_FRAG:
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return "fragmentation needed and DF set";
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case ICMP_DUR_SR:
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return "source route failed";
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default:
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break;
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}
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return "unknown cause";
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}
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void net_lwip_icmp_dest_unreach(int code, struct pbuf *p)
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{
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struct ip_hdr *iphdr = (struct ip_hdr *)p->payload;
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ip4_addr_t src;
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ip4_addr_copy(src, iphdr->src);
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printf("ICMP destination unreachable (%s) from %s\n",
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code_to_str(code), ip4addr_ntoa(&src));
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}
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