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>
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2 changed files with 13 additions and 0 deletions
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@ -178,12 +178,15 @@ wpan_phy_cca_cmp(const struct wpan_phy_cca *a, const struct wpan_phy_cca *b)
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* setting.
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* @WPAN_PHY_FLAG_STATE_QUEUE_STOPPED: Indicates that the transmit queue was
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* temporarily stopped.
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* @WPAN_PHY_FLAG_DATAGRAMS_ONLY: Indicates that transceiver is only able to
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* send/receive datagrams.
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*/
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enum wpan_phy_flags {
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WPAN_PHY_FLAG_TXPOWER = BIT(1),
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WPAN_PHY_FLAG_CCA_ED_LEVEL = BIT(2),
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WPAN_PHY_FLAG_CCA_MODE = BIT(3),
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WPAN_PHY_FLAG_STATE_QUEUE_STOPPED = BIT(4),
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WPAN_PHY_FLAG_DATAGRAMS_ONLY = BIT(5),
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};
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struct wpan_phy {
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@ -1417,6 +1417,11 @@ static int nl802154_trigger_scan(struct sk_buff *skb, struct genl_info *info)
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return -EINVAL;
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}
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if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
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NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
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return -EOPNOTSUPP;
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}
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request = kzalloc(sizeof(*request), GFP_KERNEL);
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if (!request)
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return -ENOMEM;
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@ -1584,6 +1589,11 @@ nl802154_send_beacons(struct sk_buff *skb, struct genl_info *info)
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return -EPERM;
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}
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if (wpan_phy->flags & WPAN_PHY_FLAG_DATAGRAMS_ONLY) {
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NL_SET_ERR_MSG(info->extack, "PHY only supports datagrams");
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return -EOPNOTSUPP;
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}
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request = kzalloc(sizeof(*request), GFP_KERNEL);
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if (!request)
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return -ENOMEM;
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