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mac80211: allow changing TX-related netdev features

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Set ndev->hw_features as well as ndev->features to allow
changing the TX-related features with ethtool.

We cannot (yet) change RX-related features since that
requires telling the driver about it and we have no API
for that yet.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/20200131111300.891737-10-luca@coelho.fi
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2020-01-31 13:12:46 +02:00
parent b5db1acab1
commit 07b83d2ecd
3 changed files with 11 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
net/mac80211/ieee80211_i.h
View File

@ -1729,6 +1729,13 @@ int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_csa_settings *params);
/* interface handling */
#define MAC80211_SUPPORTED_FEATURES_TX (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | \
NETIF_F_HW_CSUM | NETIF_F_SG | \
NETIF_F_HIGHDMA | NETIF_F_GSO_SOFTWARE)
#define MAC80211_SUPPORTED_FEATURES_RX (NETIF_F_RXCSUM)
#define MAC80211_SUPPORTED_FEATURES (MAC80211_SUPPORTED_FEATURES_TX | \
MAC80211_SUPPORTED_FEATURES_RX)
int ieee80211_iface_init(void);
void ieee80211_iface_exit(void);
int ieee80211_if_add(struct ieee80211_local *local, const char *name,

4
net/mac80211/iface.c
View File

@ -8,7 +8,7 @@
* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright (c) 2016 Intel Deutschland GmbH
* Copyright (C) 2018 Intel Corporation
* Copyright (C) 2018-2019 Intel Corporation
*/
#include <linux/slab.h>
#include <linux/kernel.h>
@ -1938,6 +1938,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
sdata->u.mgd.use_4addr = params->use_4addr;
ndev->features |= local->hw.netdev_features;
ndev->hw_features |= ndev->features &
MAC80211_SUPPORTED_FEATURES_TX;
netdev_set_default_ethtool_ops(ndev, &ieee80211_ethtool_ops);

6
net/mac80211/main.c
View File

@ -872,7 +872,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
enum nl80211_band band;
int channels, max_bitrates;
bool supp_ht, supp_vht, supp_he;
netdev_features_t feature_whitelist;
struct cfg80211_chan_def dflt_chandef = {};
if (ieee80211_hw_check(hw, QUEUE_CONTROL) &&
@ -931,10 +930,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
}
/* Only HW csum features are currently compatible with mac80211 */
feature_whitelist = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_HIGHDMA |
NETIF_F_GSO_SOFTWARE | NETIF_F_RXCSUM;
if (WARN_ON(hw->netdev_features & ~feature_whitelist))
if (WARN_ON(hw->netdev_features & ~MAC80211_SUPPORTED_FEATURES))
return -EINVAL;
if (hw->max_report_rates == 0)