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authorWen Gong <wgong@codeaurora.org>2019-09-06 10:48:57 +0800
committerJohannes Berg <johannes.berg@intel.com>2019-09-11 09:33:29 +0200
commit06354665f92fa8be36124a8ba7113cdfa40d9df5 (patch)
treedcf39b513c66c43381be6e3882a72f7554a1107a /net/mac80211
parent24f6d765c8926ef32b88db8abab4188f23094d46 (diff)
downloadlinux-06354665f92fa8be36124a8ba7113cdfa40d9df5.tar.gz
mac80211: allow drivers to set max MTU
Make it possibly for drivers to adjust the default max_mtu
by storing it in the hardware struct and using that value
for all interfaces.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/1567738137-31748-1-git-send-email-wgong@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/iface.c2
-rw-r--r--net/mac80211/main.c1
2 files changed, 2 insertions, 1 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 8dc6580e1787..af8b09214786 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1876,7 +1876,7 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 
 		/* MTU range: 256 - 2304 */
 		ndev->min_mtu = 256;
-		ndev->max_mtu = IEEE80211_MAX_DATA_LEN;
+		ndev->max_mtu = local->hw.max_mtu;
 
 		ret = register_netdevice(ndev);
 		if (ret) {
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 29b9d57df1a3..aba094b4ccfc 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -639,6 +639,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
 					 IEEE80211_RADIOTAP_VHT_KNOWN_BANDWIDTH;
 	local->hw.uapsd_queues = IEEE80211_DEFAULT_UAPSD_QUEUES;
 	local->hw.uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
+	local->hw.max_mtu = IEEE80211_MAX_DATA_LEN;
 	local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
 	wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
 	wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;