The Link Quality Indication data exposed by drivers could not be accessed from
userspace. Since this data is per-datagram received, it makes sense to make it
available to userspace application through the ancillary data mechanism in
recvmsg rather than through ioctls. This can be activated using the socket
option WPAN_WANTLQI under SOL_IEEE802154 protocol.
This LQI data is available in the ancillary data buffer under the SOL_IEEE802154
level as the type WPAN_LQI. The value is an unsigned byte indicating the link
quality with values ranging 0-255.
Signed-off-by: Romuald Cari <romuald.cari@devialet.com>
Signed-off-by: Clément Peron <clement.peron@devialet.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
#define WPAN_WANTACK 0
#define WPAN_SECURITY 1
#define WPAN_SECURITY_LEVEL 2
#define WPAN_WANTACK 0
#define WPAN_SECURITY 1
#define WPAN_SECURITY_LEVEL 2
#define WPAN_SECURITY_DEFAULT 0
#define WPAN_SECURITY_OFF 1
#define WPAN_SECURITY_DEFAULT 0
#define WPAN_SECURITY_OFF 1
#include <linux/termios.h> /* For TIOCOUTQ/INQ */
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/termios.h> /* For TIOCOUTQ/INQ */
#include <linux/list.h>
#include <linux/slab.h>
+#include <linux/socket.h>
#include <net/datalink.h>
#include <net/psnap.h>
#include <net/sock.h>
#include <net/datalink.h>
#include <net/psnap.h>
#include <net/sock.h>
unsigned int bound:1;
unsigned int connected:1;
unsigned int want_ack:1;
unsigned int bound:1;
unsigned int connected:1;
unsigned int want_ack:1;
+ unsigned int want_lqi:1;
unsigned int secen:1;
unsigned int secen_override:1;
unsigned int seclevel:3;
unsigned int secen:1;
unsigned int secen_override:1;
unsigned int seclevel:3;
struct dgram_sock *ro = dgram_sk(sk);
ro->want_ack = 1;
struct dgram_sock *ro = dgram_sk(sk);
ro->want_ack = 1;
size_t copied = 0;
int err = -EOPNOTSUPP;
struct sk_buff *skb;
size_t copied = 0;
int err = -EOPNOTSUPP;
struct sk_buff *skb;
+ struct dgram_sock *ro = dgram_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_ieee802154 *, saddr, msg->msg_name);
skb = skb_recv_datagram(sk, flags, noblock, &err);
DECLARE_SOCKADDR(struct sockaddr_ieee802154 *, saddr, msg->msg_name);
skb = skb_recv_datagram(sk, flags, noblock, &err);
*addr_len = sizeof(*saddr);
}
*addr_len = sizeof(*saddr);
}
+ if (ro->want_lqi) {
+ err = put_cmsg(msg, SOL_IEEE802154, WPAN_WANTLQI,
+ sizeof(uint8_t), &(mac_cb(skb)->lqi));
+ if (err)
+ goto done;
+ }
+
if (flags & MSG_TRUNC)
copied = skb->len;
done:
if (flags & MSG_TRUNC)
copied = skb->len;
done:
case WPAN_WANTACK:
val = ro->want_ack;
break;
case WPAN_WANTACK:
val = ro->want_ack;
break;
+ case WPAN_WANTLQI:
+ val = ro->want_lqi;
+ break;
case WPAN_SECURITY:
if (!ro->secen_override)
val = WPAN_SECURITY_DEFAULT;
case WPAN_SECURITY:
if (!ro->secen_override)
val = WPAN_SECURITY_DEFAULT;
case WPAN_WANTACK:
ro->want_ack = !!val;
break;
case WPAN_WANTACK:
ro->want_ack = !!val;
break;
+ case WPAN_WANTLQI:
+ ro->want_lqi = !!val;
+ break;
case WPAN_SECURITY:
if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
!ns_capable(net->user_ns, CAP_NET_RAW)) {
case WPAN_SECURITY:
if (!ns_capable(net->user_ns, CAP_NET_ADMIN) &&
!ns_capable(net->user_ns, CAP_NET_RAW)) {