It is noticed in Kernel version 5.14.0-rc4+, that when sending the NL cmd NL80211_CMD_SET_TID_CONFIG with nested attrs under NL80211_ATTR_TID_CONFIG, kernel returnes a response with the error "NLA_F_NESTED is missing". $ sudo ./iw dev wlan0 set tidconf tids 0x1 ampdu on kernel reports: NLA_F_NESTED is missing command failed: Invalid argument (-22)) Fix this by setting NLA_F_NESTED flag everytime when using nla_nest_start() library function. This is needed to make cfg80211 allow the nl80211 command NL80211_ATTR_TID_CONFIG in the new kernel versions that enforce netlink attribute policy validation. Signed-off-by: Gokul Sivakumar <gokulkumar792@xxxxxxxxx> --- iw.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/iw.h b/iw.h index a118f5b..545fd0e 100644 --- a/iw.h +++ b/iw.h @@ -11,6 +11,11 @@ #include "nl80211.h" #include "ieee80211.h" +#ifndef NL_CAPABILITY_VERSION_3_5_0 +#define nla_nest_start(msg, attrtype) \ + nla_nest_start(msg, NLA_F_NESTED | (attrtype)) +#endif + /* support for extack if compilation headers are too old */ #ifndef NETLINK_EXT_ACK #define NETLINK_EXT_ACK 11 -- 2.25.1
