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net: dsa: lan9303: use ethtool_puts() for lan9303_get_strings()

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This pattern of strncpy with some pointer arithmetic setting fixed-sized
intervals with string literal data is a bit weird so let's use
ethtool_puts() as this has more obvious behavior and is less-error
prone.

Nicely, we also get to drop a usage of the now deprecated strncpy() [1].

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://github.com/KSPP/linux/issues/90
Suggested-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240425-strncpy-drivers-net-dsa-lan9303-core-c-v4-1-9fafd419d7bb@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Justin Stitt 2024-04-25 01:19:13 +00:00 committed by Jakub Kicinski
parent d5115a55ff
commit 8880e2666f
1 changed files with 3 additions and 4 deletions
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7
drivers/net/dsa/lan9303-core.c
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@ -1007,15 +1007,14 @@ static const struct lan9303_mib_desc lan9303_mib[] = {
static void lan9303_get_strings(struct dsa_switch *ds, int port,
u32 stringset, uint8_t *data)
{
u8 *buf = data;
unsigned int u;
if (stringset != ETH_SS_STATS)
return;
for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
strncpy(data + u * ETH_GSTRING_LEN, lan9303_mib[u].name,
ETH_GSTRING_LEN);
}
for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++)
ethtool_puts(&buf, lan9303_mib[u].name);
}
static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,