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net: ieee802154: Handle limited devices with only datagram support 

Some devices, like HardMAC ones can be a bit limited in the way they
handle mac commands. In particular, they might just not support it at
all and instead only be able to transmit and receive regular data
packets. In this case, they cannot be used for any of the internal
management commands that we have introduced so far and must be flagged
accordingly.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20230324110558.90707-2-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
This commit is contained in:
Miquel Raynal 2023-03-24 12:05:57 +01:00 committed by Stefan Schmidt
parent d021d218f6
commit 822452fb6c
2 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/net/cfg802154.h
View File

@ -178,12 +178,15 @@ wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b)
* setting.
* @WPAN_PHY_FLAG_STATE_QUEUE_STOPPED: Indicates that the transmit queue was
* temporarily stopped.
* @WPAN_PHY_FLAG_DATAGRAMS_ONLY: Indicates that transceiver is only able to
* send/receive datagrams.
*/
enum wpan_phy_flags {
WPAN_PHY_FLAG_TXPOWER = BIT(1),
WPAN_PHY_FLAG_CCA_ED_LEVEL = BIT(2),
WPAN_PHY_FLAG_CCA_MODE = BIT(3),
WPAN_PHY_FLAG_STATE_QUEUE_STOPPED = BIT(4),
WPAN_PHY_FLAG_DATAGRAMS_ONLY = BIT(5),
};
struct wpan_phy {

10
net/ieee802154/nl802154.c
View File

@ -1417,6 +1417,11 @@ static int nl802154_trigger_scan(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
return -EOPNOTSUPP;
}
request = kzalloc(sizeof(*request), GFP_KERNEL);
if (!request)
return -ENOMEM;
@ -1584,6 +1589,11 @@ nl802154_send_beacons(struct sk_buff *skb, struct genl_info *info)
return -EPERM;
}
if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
return -EOPNOTSUPP;
}
request = kzalloc(sizeof(*request), GFP_KERNEL);
if (!request)
return -ENOMEM;