Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-05-26 10:46:28 +08:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Support fragmentation and reassembly

Browse Source 
Signed-off-by: luojun1 <luojun1@xiaomi.com>
This commit is contained in:
luojun1234
2023-01-09 20:47:11 +08:00
committed by Xiang Xiao
parent b1899ffbfd
commit ff3733b5b5
25 changed files with 3152 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/devif/devif_poll.c
+99 -3
View File
@@ -33,6 +33,7 @@
#include <nuttx/net/net.h>
#include "devif/devif.h"
#include "netdev/netdev.h"
#include "arp/arp.h"
#include "can/can.h"
#include "tcp/tcp.h"
@@ -46,6 +47,7 @@
#include "mld/mld.h"
#include "ipforward/ipforward.h"
#include "sixlowpan/sixlowpan.h"
#include "ipfrag/ipfrag.h"
/****************************************************************************
* Private Types
@@ -616,6 +618,79 @@ static inline int devif_poll_tcp_connections(FAR struct net_driver_s *dev,
# define devif_poll_tcp_connections(dev, callback) (0)
#endif
/****************************************************************************
* Name: devif_poll_ipfrag
*
* Description:
* Poll all ip fragments for available packets to send.
*
* Input Parameters:
* dev - NIC Device instance.
* callback - the actual sending API provided by each NIC driver.
*
* Returned Value:
* Zero indicated the polling will continue, else stop the polling.
*
* Assumptions:
* This function is called from the MAC device driver with the network
* locked.
*
****************************************************************************/
#ifdef CONFIG_NET_IPFRAG
static int devif_poll_ipfrag(FAR struct net_driver_s *dev,
devif_poll_callback_t callback)
{
FAR struct iob_s *frag;
bool reused = false;
int bstop = false;
while (!bstop)
{
/* Dequeue outgoing fragment from dev->d_fragout */
frag = iob_remove_queue(&dev->d_fragout);
if (frag == NULL)
{
break;
}
/* Frag buffer could be reused for other protocols */
reused = true;
/* Replace original iob */
netdev_iob_replace(dev, frag);
/* build L2 headers */
devif_out(dev);
/* Call back into the driver */
bstop = callback(dev);
}
/* Notify the device driver that ip fragments is available. */
if (iob_peek_queue(&dev->d_fragout) != NULL)
{
netdev_txnotify_dev(dev);
}
/* Reuse iob buffer */
if (!bstop && reused)
{
iob_update_pktlen(dev->d_iob, 0);
netdev_iob_prepare(dev, true, 0);
}
return bstop;
}
#endif
/****************************************************************************
* Name: devif_poll_connections
*
@@ -654,10 +729,19 @@ static int devif_poll_connections(FAR struct net_driver_s *dev,
* action.
*/
#ifdef CONFIG_NET_ARP_SEND
/* Check for pending ARP requests */
#ifdef CONFIG_NET_IPFRAG
/* Traverse all of ip fragments for available packets to transfer */
bstop = devif_poll_ipfrag(dev, callback);
if (!bstop)
#endif
#ifdef CONFIG_NET_ARP_SEND
{
/* Check for pending ARP requests */
bstop = arp_poll(dev, callback);
}
bstop = arp_poll(dev, callback);
if (!bstop)
#endif
#ifdef CONFIG_NET_PKT
@@ -1048,6 +1132,18 @@ int devif_poll_out(FAR struct net_driver_s *dev,
if (callback)
{
#ifdef CONFIG_NET_IPFRAG
if (ip_fragout(dev) != OK)
{
netdev_iob_release(dev);
return 1;
}
else if (iob_peek_queue(&dev->d_fragout) != NULL)
{
return devif_poll_ipfrag(dev, callback);
}
#endif
return callback(dev);
}