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net: shell: Add support to set Ethernet MAC address

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Add a shell command to set Ethernet MAC address, useful in configuring
custom/local MAC addresses.

Signed-off-by: Krishna T <krishna.t@nordicsemi.no>
This commit is contained in:
Krishna T 2023-01-09 21:39:00 +05:30 • committed by Carles Cufí
commit b59c89123c
1 changed files with 59 additions and 0 deletions
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59
subsys/net/ip/net_shell.c
View file

@ -27,6 +27,9 @@ LOG_MODULE_REGISTER(net_shell, LOG_LEVEL_DBG);
#include <zephyr/net/ppp.h> #include <zephyr/net/ppp.h>
#include <zephyr/net/net_stats.h> #include <zephyr/net/net_stats.h>
#include <zephyr/sys/printk.h> #include <zephyr/sys/printk.h>
#if defined(CONFIG_NET_L2_ETHERNET)
#include <zephyr/net/ethernet.h>
#endif /* CONFIG_NET_L2_ETHERNET */
#include "route.h" #include "route.h"
#include "icmpv6.h" #include "icmpv6.h"
@ -3563,6 +3566,59 @@ static int cmd_net_iface(const struct shell *sh, size_t argc, char *argv[])
return 0; return 0;
} }
static int cmd_net_set_mac(const struct shell *sh, size_t argc, char *argv[])
{
#if !defined(CONFIG_NET_L2_ETHERNET)
PR_WARNING("Unsupported command, please enable CONFIG_NET_L2_ETHERNET\n");
return -ENOEXEC;
#else
struct net_if *iface;
struct net_eth_addr mac_addr;
int idx;
int ret;
if (argc < 3) {
PR_WARNING("Missing interface index and/or MAC address\n");
goto err;
}
idx = get_iface_idx(sh, argv[1]);
if (idx < 0) {
goto err;
}
iface = net_if_get_by_index(idx);
if (!iface) {
PR_WARNING("No such interface in index %d\n", idx);
goto err;
}
if (net_if_l2(iface) != &NET_L2_GET_NAME(ETHERNET)) {
PR_WARNING("MAC address can be set only for Ethernet\n");
goto err;
}
if (net_bytes_from_str(mac_addr.addr, sizeof(mac_addr), argv[2]) < 0) {
PR_WARNING("Invalid MAC address\n");
goto err;
}
ret = net_if_set_link_addr(iface, mac_addr.addr, sizeof(mac_addr), NET_LINK_ETHERNET);
if (ret < 0) {
if (ret == -EPERM) {
PR_WARNING("MAC address cannot be set when interface is operational\n");
goto err;
}
PR_WARNING("Failed to set MAC address (%d)\n", ret);
goto err;
}
return 0;
err:
return -ENOEXEC;
#endif /* CONFIG_NET_L2_ETHERNET */
}
struct ctx_info { struct ctx_info {
int pos; int pos;
bool are_external_pools; bool are_external_pools;
@ -5914,6 +5970,9 @@ SHELL_STATIC_SUBCMD_SET_CREATE(net_cmd_iface,
"'net iface <index>' shows network interface " "'net iface <index>' shows network interface "
"information.", "information.",
cmd_net_iface), cmd_net_iface),
SHELL_CMD(set_mac, IFACE_DYN_CMD,
"'net iface set_mac <index> <MAC>' sets MAC address for the network interface.",
cmd_net_set_mac),
SHELL_SUBCMD_SET_END SHELL_SUBCMD_SET_END
); );