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Net PKT: Suppress ARP requests for packet socket transfers

This commit is contained in:
Gregory Nutt 2014-06-24 08:33:58 -06:00
parent 0520270733
commit 4108a67b80
1 changed files with 19 additions and 1 deletions
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20
net/pkt/pkt_send.c
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@ -243,6 +243,8 @@ ssize_t pkt_send(FAR struct socket *psock, FAR const void *buf, size_t len)
state.snd_cb = uip_pktcallbackalloc(conn);
if (state.snd_cb)
{
FAR struct uip_driver_s *dev;
/* Set up the callback in the connection */
state.snd_cb->flags = UIP_POLL;
@ -250,8 +252,20 @@ ssize_t pkt_send(FAR struct socket *psock, FAR const void *buf, size_t len)
state.snd_cb->event = pktsend_interrupt;
/* Notify the device driver of the availability of TX data */
/* TODO better lookup network interface from *psock or *conn */
dev = netdev_findbyname("eth0");
/* Make sure no ARP frame is sent instead of the frame just written */
dev->d_flags |= IFF_NOARP;
/* Notify the device driver that new TX data is available.
* NOTES: This is in essence what netdev_txnotify() does, which
* is not possible to call since it expects a uip_ipaddr_t as
* its single argument to lookup the network interface.
*/
struct uip_driver_s *dev = netdev_findbyname("eth0");
dev->d_txavail(dev);
/* Wait for the send to complete or an error to occure: NOTES: (1)
@ -265,6 +279,10 @@ ssize_t pkt_send(FAR struct socket *psock, FAR const void *buf, size_t len)
/* Make sure that no further interrupts are processed */
uip_pktcallbackfree(conn, state.snd_cb);
/* Clear the no-ARP bit in the device flags */
dev->d_flags &= ~IFF_NOARP;
}
}