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| author | Michael Brown | 2007-01-18 21:39:17 +0100 |
|---|---|---|
| committer | Michael Brown | 2007-01-18 21:39:17 +0100 |
| commit | c014f607a8ca9bb394d8b8b7fe6638898e29fce7 (patch) | |
| tree | f486c563fed14a2aa7f020965ef47ad41e98e53a /src/net/netdevice.c | |
| parent | Move include/malloc.h to include/gpxe/malloc.h, since everything in there (diff) | |
| download | ipxe-c014f607a8ca9bb394d8b8b7fe6638898e29fce7.tar.gz ipxe-c014f607a8ca9bb394d8b8b7fe6638898e29fce7.tar.xz ipxe-c014f607a8ca9bb394d8b8b7fe6638898e29fce7.zip | |
Use total free memory as advertised window. This seems to be sufficient
to avoid drops even on slow NICs.
Diffstat (limited to 'src/net/netdevice.c')
| -rw-r--r-- | src/net/netdevice.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/net/netdevice.c b/src/net/netdevice.c index 2733d237..c5085918 100644 --- a/src/net/netdevice.c +++ b/src/net/netdevice.c @@ -398,8 +398,13 @@ static void net_step ( struct process *process ) { /* Poll for new packets */ netdev_poll ( netdev, -1U ); - /* Process received packets */ - while ( ( pkb = netdev_rx_dequeue ( netdev ) ) ) { + /* Process at most one received packet. Give priority + * to getting packets out of the NIC over processing + * the received packets, because we advertise a window + * that assumes that we can receive packets from the + * NIC faster than they arrive. + */ + if ( ( pkb = netdev_rx_dequeue ( netdev ) ) ) { DBGC ( netdev, "NETDEV %p processing %p\n", netdev, pkb ); netdev->ll_protocol->rx ( pkb, netdev ); |