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wil6210: support set_multicast_to_unicast cfg80211 operation

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Wil6210 AP has a separate ring for transmitting multicast packets,
multicast packets are transmitted without an ack from the receiver side.
Therefore, 802.11 spec defines some low MCS rates for multicat packets.
However, there is no guarantee that these packets were really received
and handled on the client side.

Some applications that rely on multicast packets, may prefer to
transmit these packets as a unicast to ensure reliability, and also
to ensure better performance with high MCS rates.
multicast to unicast is done by duplicating multicast packets to all
clients and changing the DA (multicast) to the MAC address of the
client.
see NL80211_CMD_SET_MULTICAST_TO_UNICAST for more info.

Signed-off-by: Ahmad Masri <amasri@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Ahmad Masri
2019-12-18 20:10:21 +02:00
committed by Kalle Valo
parent 18beb61d84
commit 5e5f069c30
3 changed files with 48 additions and 1 deletions
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16
drivers/net/wireless/ath/wil6210/cfg80211.c
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@@ -2579,6 +2579,21 @@ wil_cfg80211_update_ft_ies(struct wiphy *wiphy, struct net_device *dev,
return rc;
}
static int wil_cfg80211_set_multicast_to_unicast(struct wiphy *wiphy,
struct net_device *dev,
const bool enabled)
{
struct wil6210_priv *wil = wiphy_to_wil(wiphy);
if (wil->multicast_to_unicast == enabled)
return 0;
wil_info(wil, "set multicast to unicast, enabled=%d\n", enabled);
wil->multicast_to_unicast = enabled;
return 0;
}
static const struct cfg80211_ops wil_cfg80211_ops = {
.add_virtual_intf = wil_cfg80211_add_iface,
.del_virtual_intf = wil_cfg80211_del_iface,
@@ -2615,6 +2630,7 @@ static const struct cfg80211_ops wil_cfg80211_ops = {
.sched_scan_start = wil_cfg80211_sched_scan_start,
.sched_scan_stop = wil_cfg80211_sched_scan_stop,
.update_ft_ies = wil_cfg80211_update_ft_ies,
.set_multicast_to_unicast = wil_cfg80211_set_multicast_to_unicast,
};
static void wil_wiphy_init(struct wiphy *wiphy)