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net, treewide: define and use MAC_ADDR_STR_LEN

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There are a few places in the tree which compute the length of the
string representation of a MAC address as 3 * ETH_ALEN - 1. Define a
constant for this and use it where relevant. No functionality changes
are expected.

Signed-off-by: Uday Shankar <ushankar@purestorage.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Simon Horman <horms@verge.net.au>
Link: https://patch.msgid.link/20250312-netconsole-v6-1-3437933e79b8@purestorage.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Uday Shankar
2025-03-12 13:51:46 -06:00
committed by Paolo Abeni
parent 34e5ededf4
commit 6d6c1ba782
6 changed files with 11 additions and 9 deletions
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4
lib/net_utils.c
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@@ -7,11 +7,9 @@
bool mac_pton(const char *s, u8 *mac)
{
size_t maxlen = 3 * ETH_ALEN - 1;
int i;
/* XX:XX:XX:XX:XX:XX */
if (strnlen(s, maxlen) < maxlen)
if (strnlen(s, MAC_ADDR_STR_LEN) < MAC_ADDR_STR_LEN)
return false;
/* Don't dirty result unless string is valid MAC. */