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| author | Michael Brown | 2007-01-09 22:47:01 +0100 |
|---|---|---|
| committer | Michael Brown | 2007-01-09 22:47:01 +0100 |
| commit | c65fae2475ca652ef7948f286881b0c06bce861b (patch) | |
| tree | 5588ec4b947ecc79201ee613d1cd0a0a7ca6d1d8 /src/drivers/net/rtl8139.c | |
| parent | Autopadding was sometimes overwriting the struct list_head at the end (diff) | |
| download | ipxe-c65fae2475ca652ef7948f286881b0c06bce861b.tar.gz ipxe-c65fae2475ca652ef7948f286881b0c06bce861b.tar.xz ipxe-c65fae2475ca652ef7948f286881b0c06bce861b.zip | |
Add RX quotas to the net device poll() method. This avoids the problem
of alloc_pkb() exhaustion when e.g. an iSCSI-booted DOS session is left
idle for a long time at the C:\ prompt and builds up a huge packet
backlog.
Diffstat (limited to 'src/drivers/net/rtl8139.c')
| -rw-r--r-- | src/drivers/net/rtl8139.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/drivers/net/rtl8139.c b/src/drivers/net/rtl8139.c index 4981329c3..a25755c2d 100644 --- a/src/drivers/net/rtl8139.c +++ b/src/drivers/net/rtl8139.c @@ -413,8 +413,9 @@ static int rtl_transmit ( struct net_device *netdev, struct pk_buff *pkb ) { * Poll for received packets * * @v netdev Network device + * @v rx_quota Maximum number of packets to receive */ -static void rtl_poll ( struct net_device *netdev ) { +static void rtl_poll ( struct net_device *netdev, unsigned int rx_quota ) { struct rtl8139_nic *rtl = netdev->priv; unsigned int status; unsigned int tsad; @@ -441,7 +442,7 @@ static void rtl_poll ( struct net_device *netdev ) { } /* Handle received packets */ - while ( ! ( inw ( rtl->ioaddr + ChipCmd ) & RxBufEmpty ) ) { + while ( rx_quota && ! ( inw ( rtl->ioaddr + ChipCmd ) & RxBufEmpty ) ){ rx_status = * ( ( uint16_t * ) ( rtl->rx.ring + rtl->rx.offset ) ); rx_len = * ( ( uint16_t * ) |