From d2aaf2a01792ccf214f933d0b1ca2d41788c7b16 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Tue, 3 Jan 2023 17:56:41 +0100 Subject: ieee802154: Introduce a helper to validate a channel This helper for now only checks if the page member and channel member are valid (in the specification range) and supported (by checking the device capabilities). Soon two new parameters will be introduced and having this helper will let us only modify its content rather than modifying the logic everywhere else in the subsystem. There is not functional change. Signed-off-by: Miquel Raynal Acked-by: Alexander Aring Link: https://lore.kernel.org/r/20230103165644.432209-4-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt --- include/net/cfg802154.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/net') diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h index 76d4f95e9974..1184b543fba7 100644 --- a/include/net/cfg802154.h +++ b/include/net/cfg802154.h @@ -246,6 +246,17 @@ static inline void wpan_phy_net_set(struct wpan_phy *wpan_phy, struct net *net) write_pnet(&wpan_phy->_net, net); } +static inline bool ieee802154_chan_is_valid(struct wpan_phy *phy, + u8 page, u8 channel) +{ + if (page > IEEE802154_MAX_PAGE || + channel > IEEE802154_MAX_CHANNEL || + !(phy->supported.channels[page] & BIT(channel))) + return false; + + return true; +} + /** * struct ieee802154_addr - IEEE802.15.4 device address * @mode: Address mode from frame header. Can be one of: -- cgit v1.2.3