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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
| commit | b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9 (patch) | |
| tree | 9847508d9b8d4e585f90db4a453bfbc3700c997e /net/ax25/af_ax25.c | |
| parent | a16fffdd8eb95ebab7dc22414896fe6493951e0e (diff) | |
| parent | be0ea69674ed95e1e98cb3687a241badc756d228 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch
Diffstat (limited to 'net/ax25/af_ax25.c')
| -rw-r--r-- | net/ax25/af_ax25.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index 00d9e5e1315..7da5ebb84e9 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -1435,6 +1435,11 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock, size_t size; int lv, err, addr_len = msg->msg_namelen; + /* AX.25 empty data frame has no meaning : don't send */ + if (len == 0) { + return (0); + } + if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT)) return -EINVAL; @@ -1529,10 +1534,8 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock, dp = ax25->digipeat; } - SOCK_DEBUG(sk, "AX.25: sendto: Addresses built.\n"); - /* Build a packet */ - SOCK_DEBUG(sk, "AX.25: sendto: building packet.\n"); + SOCK_DEBUG(sk, "AX.25: sendto: Addresses built. Building packet.\n"); /* Assume the worst case */ size = len + ax25->ax25_dev->dev->hard_header_len; @@ -1636,6 +1639,13 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock, skb_reset_transport_header(skb); copied = skb->len; + /* AX.25 empty data frame has no meaning : ignore it */ + if (copied == 0) { + err = copied; + skb_free_datagram(sk, skb); + goto out; + } + if (copied > size) { copied = size; msg->msg_flags |= MSG_TRUNC; @@ -1985,9 +1995,8 @@ static const struct proto_ops ax25_proto_ops = { /* * Called by socket.c on kernel start up */ -static struct packet_type ax25_packet_type = { - .type = __constant_htons(ETH_P_AX25), - .dev = NULL, /* All devices */ +static struct packet_type ax25_packet_type __read_mostly = { + .type = cpu_to_be16(ETH_P_AX25), .func = ax25_kiss_rcv, }; |