From 99eb8558642b988055d2b8b16a334475550f78d3 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dbaryshkov@gmail.com>
Date: Fri, 7 Aug 2009 02:58:43 +0000
Subject: af_ieee802154: add support for WANT_ACK socket option
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ieee802154/dgram.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 54 insertions(+), 4 deletions(-)
(limited to 'net/ieee802154')
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
index 25018a9a53aa..77ae6852b93d 100644
--- a/net/ieee802154/dgram.c
+++ b/net/ieee802154/dgram.c
@@ -44,6 +44,7 @@ struct dgram_sock {
struct ieee802154_addr dst_addr;
unsigned bound:1;
+ unsigned want_ack:1;
};
static inline struct dgram_sock *dgram_sk(const struct sock *sk)
@@ -51,7 +52,6 @@ static inline struct dgram_sock *dgram_sk(const struct sock *sk)
return container_of(sk, struct dgram_sock, sk);
}
-
static void dgram_hash(struct sock *sk)
{
write_lock_bh(&dgram_lock);
@@ -74,6 +74,7 @@ static int dgram_init(struct sock *sk)
ro->dst_addr.addr_type = IEEE802154_ADDR_LONG;
ro->dst_addr.pan_id = 0xffff;
+ ro->want_ack = 1;
memset(&ro->dst_addr.hwaddr, 0xff, sizeof(ro->dst_addr.hwaddr));
return 0;
}
@@ -237,7 +238,10 @@ static int dgram_sendmsg(struct kiocb *iocb, struct sock *sk,
skb_reset_network_header(skb);
- mac_cb(skb)->flags = IEEE802154_FC_TYPE_DATA | MAC_CB_FLAG_ACKREQ;
+ mac_cb(skb)->flags = IEEE802154_FC_TYPE_DATA;
+ if (ro->want_ack)
+ mac_cb(skb)->flags |= MAC_CB_FLAG_ACKREQ;
+
mac_cb(skb)->seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
err = dev_hard_header(skb, dev, ETH_P_IEEE802154, &ro->dst_addr,
ro->bound ? &ro->src_addr : NULL, size);
@@ -382,13 +386,59 @@ int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
static int dgram_getsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user *optlen)
{
- return -EOPNOTSUPP;
+ struct dgram_sock *ro = dgram_sk(sk);
+
+ int val, len;
+
+ if (level != SOL_IEEE802154)
+ return -EOPNOTSUPP;
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ len = min_t(unsigned int, len, sizeof(int));
+
+ switch (optname) {
+ case WPAN_WANTACK:
+ val = ro->want_ack;
+ break;
+ default:
+ return -ENOPROTOOPT;
+ }
+
+ if (put_user(len, optlen))
+ return -EFAULT;
+ if (copy_to_user(optval, &val, len))
+ return -EFAULT;
+ return 0;
}
static int dgram_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int __user optlen)
{
- return -EOPNOTSUPP;
+ struct dgram_sock *ro = dgram_sk(sk);
+ int val;
+ int err = 0;
+
+ if (optlen < sizeof(int))
+ return -EINVAL;
+
+ if (get_user(val, (int __user *)optval))
+ return -EFAULT;
+
+ lock_sock(sk);
+
+ switch (optname) {
+ case WPAN_WANTACK:
+ ro->want_ack = !!val;
+ break;
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
}
struct proto ieee802154_dgram_prot = {
--
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