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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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7
net/mac80211/debugfs_sta.c
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@@ -457,11 +457,12 @@ static ssize_t link_sta_addr_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct link_sta_info *link_sta = file->private_data;
u8 mac[3 * ETH_ALEN + 1];
u8 mac[MAC_ADDR_STR_LEN + 2];
snprintf(mac, sizeof(mac), "%pM\n", link_sta->pub->addr);
return simple_read_from_buffer(userbuf, count, ppos, mac, 3 * ETH_ALEN);
return simple_read_from_buffer(userbuf, count, ppos, mac,
MAC_ADDR_STR_LEN + 1);
}
LINK_STA_OPS(addr);
@@ -1240,7 +1241,7 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
struct ieee80211_local *local = sta->local;
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct dentry *stations_dir = sta->sdata->debugfs.subdir_stations;
u8 mac[3*ETH_ALEN];
u8 mac[MAC_ADDR_STR_LEN + 1];
if (!stations_dir)
return;