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dhcpc: adds errno to the dhcpc internal error

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add errno to help analyze possible causes of dhcp failures

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu 2023-04-11 22:10:43 +08:00 • committed by Xiang Xiao
parent b810ac0b7e
commit 44e5a5ecd7
1 changed files with 7 additions and 0 deletions
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7
netutils/dhcpc/dhcpc.c
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@ -306,6 +306,7 @@ static int dhcpc_sendmsg(FAR struct dhcpc_state_s *pdhcpc,
break;
default:
errno = EINVAL;
return ERROR;
}
@ -729,6 +730,7 @@ int dhcpc_request(FAR void *handle, FAR struct dhcpc_state *presult)
{
if (pdhcpc->cancel)
{
errno = EINTR;
return ERROR;
}
@ -807,6 +809,7 @@ int dhcpc_request(FAR void *handle, FAR struct dhcpc_state *presult)
{
if (pdhcpc->cancel)
{
errno = EINTR;
return ERROR;
}
@ -852,6 +855,7 @@ int dhcpc_request(FAR void *handle, FAR struct dhcpc_state *presult)
ninfo("Received NAK\n");
oldaddr.s_addr = INADDR_ANY;
netlib_set_ipv4addr(pdhcpc->interface, &oldaddr);
errno = ECONNREFUSED;
return ERROR;
}
@ -937,12 +941,14 @@ int dhcpc_request_async(FAR void *handle, dhcpc_callback_t callback)
if (!handle || !callback)
{
errno = EINVAL;
return ERROR;
}
if (pdhcpc->thread)
{
nerr("ERROR: DHCPC thread already running\n");
errno = EALREADY;
return ERROR;
}
@ -951,6 +957,7 @@ int dhcpc_request_async(FAR void *handle, dhcpc_callback_t callback)
if (ret != 0)
{
nerr("ERROR: Failed to start the DHCPC thread\n");
errno = ret;
return ERROR;
}