Re: Rtl8139 file transmission lockup
Donald Becker <[email protected]>
| Newsgroups | gmane.linux.drivers.realtek.devel |
|---|---|
| Message-ID | <[email protected]> |
On Sat, 3 Aug 2002, Sean Mullen wrote: > I'm using 2 RTL8139 cards (both are SMC 1211TX) on my linux firewall. > These are on a linux box with kernel linux-2.4.16. Normal internet traffic > from my local LAN is fine. However, when I'm transferring files off of the > linux box to a Win 2k box on the local LAN, the eth1 (LAN facing) interface > locks with a TX error (assuming it's speed related). What driver version are you using? > I can re-enable the LAN with an 'ifdown eth1' and an 'ifup eth1'. I > added a debug printout for a TX underrun, I think that's what's happening. > > Here's the result of thedebug line I added: "eth1:TxUnderrun, status > 0008e52e." That is reporting a transmit underrun. This should be a mostly harmless event. The transmitted packet might be corrupted, with a assured-bad CRC. The Tx FIFO threshold will be increased The transmitter will be restarted. The initial Tx threshold value is set to 256 bytes (see TX_FIFO_THRESH below) The threshold is increased by 64 bytes at each underrun. This initial value is set by the following documented constant: /* PCI Tuning Parameters Threshold is bytes transferred to chip before transmission starts. */ #define TX_FIFO_THRESH 256 /* In bytes, rounded down to 32 byte units. */ > Index #2: Found a RealTek RTL8139 adapter at 0xec00. > RealTek chip registers at 0xec00 > 0x000: ... ... ... ... 000aa52e 000aa52e 000aa52e 000aa52e Hmmm, none of the Tx status registers are reporting a Tx underrun here. > 0x020: 02f70010 02f71010 02f72010 02f73010 02f60000 0d0a0000 654c653c > 0000c07f And this reports that the transmitter and receiver are both enabled. > 0x040: 74000400 The transmitter configuration is normal 74.. .... Version 74 == 8139C .... .4.. 256 bytes per burst > 0x060: 1100f00f 01e1782d 000145e1 00000000 00000004 000417c8 b0f243b9 -- Donald Becker [email protected] Scyld Computing Corporation http://www.scyld.com 410 Severn Ave. Suite 210 Second Generation Beowulf Clusters Annapolis MD 21403 410-990-9993