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netconsole: use netpoll_parse_ip_addr in local_ip_store

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Replace manual IP address parsing with a call to netpoll_parse_ip_addr
in local_ip_store(), simplifying the code and reducing the chance of
errors.

Also, remove the pr_err() if the user enters an invalid value in
configfs entries. pr_err() is not the best way to alert user that the
configuration is invalid.

Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Breno Leitao
2025-08-11 11:13:27 -07:00
committed by Jakub Kicinski
parent 364213b736
commit 60cb692141
1 changed files with 5 additions and 17 deletions
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22
drivers/net/netconsole.c
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@@ -757,6 +757,7 @@ static ssize_t local_ip_store(struct config_item *item, const char *buf,
{
struct netconsole_target *nt = to_target(item);
ssize_t ret = -EINVAL;
int ipv6;
mutex_lock(&dynamic_netconsole_mutex);
if (nt->enabled) {
@@ -765,23 +766,10 @@ static ssize_t local_ip_store(struct config_item *item, const char *buf,
goto out_unlock;
}
if (strnchr(buf, count, ':')) {
const char *end;
if (in6_pton(buf, count, nt->np.local_ip.in6.s6_addr, -1, &end) > 0) {
if (*end && *end != '\n') {
pr_err("invalid IPv6 address at: <%c>\n", *end);
goto out_unlock;
}
nt->np.ipv6 = true;
} else
goto out_unlock;
} else {
if (!nt->np.ipv6)
nt->np.local_ip.ip = in_aton(buf);
else
goto out_unlock;
}
ipv6 = netpoll_parse_ip_addr(buf, &nt->np.local_ip);
if (ipv6 == -1)
goto out_unlock;
nt->np.ipv6 = !!ipv6;
ret = strnlen(buf, count);
out_unlock: