From 56aa091d60a63fee83d2c894edb69b7c159966c7 Mon Sep 17 00:00:00 2001 From: Werner Almesberger Date: Thu, 4 Apr 2013 06:32:35 +0000 Subject: ieee802154/nl-mac.c: make some MLME operations optional Check for NULL before calling the following operations from "struct ieee802154_mlme_ops": assoc_req, assoc_resp, disassoc_req, start_req, and scan_req. This fixes a current oops where those functions are called but not implemented. It also updates the documentation to clarify that they are now optional by design. If a call to an unimplemented function is attempted, the kernel returns EOPNOTSUPP via netlink. The following operations are still required: get_phy, get_pan_id, get_short_addr, and get_dsn. Note that the places where this patch changes the initialization of "ret" should not affect the rest of the code since "ret" was always set (again) before returning its value. Signed-off-by: Werner Almesberger Signed-off-by: David S. Miller --- include/net/ieee802154_netdev.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/net/ieee802154_netdev.h') diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h index 642f94c0fa2f..8196d5d40359 100644 --- a/include/net/ieee802154_netdev.h +++ b/include/net/ieee802154_netdev.h @@ -85,6 +85,8 @@ struct wpan_phy; * Use wpan_wpy_put to put that reference. */ struct ieee802154_mlme_ops { + /* The following fields are optional (can be NULL). */ + int (*assoc_req)(struct net_device *dev, struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap); @@ -101,6 +103,8 @@ struct ieee802154_mlme_ops { int (*scan_req)(struct net_device *dev, u8 type, u32 channels, u8 page, u8 duration); + /* The fields below are required. */ + struct wpan_phy *(*get_phy)(const struct net_device *dev); /* -- cgit v1.2.3-59-g8ed1b