Javi Roman wrote: > Hi all! > > I'm workig with this set: > linux-2.4.18 > RTAI 3.0 (rthal-5g-2.4.18.patch for PPC) > RTNET 0.7.1
/* no comment */ > > I'm getting a very strange behavior when I going to set up Rtnet: > > PPC host with IP: 10.10.1.1: > [ with the network wire unplugged from switch] > # lsmod > loopback-rt 1412 1 > mpc8xx_fec-rt 5398 1 > rtnet 45856 0 [loopback-rt mpc8xx_fec-rt] > rtai_rtdm 11424 0 [rtnet] > rtai_sem 18544 0 [mpc8xx_fec-rt rtnet] > rtai_up 44400 0 [mpc8xx_fec-rt rtnet rtai_rtdm rtai_sem] > rtai_malloc 5224 0 [rtai_rtdm rtai_sem rtai_up] > rtai_hal 22480 0 [loopback-rt mpc8xx_fec-rt rtnet > rtai_rtdm rtai_sem rtai_up rtai_malloc > # ./rtifconfig rtlo up 127.0.0.1 > # ./rtifconfig rteth0 up 10.10.1.1 > # ./rtroute solicit 10.10.1.2 dev rteth0 > fec_enet_start_xmit: data len is 42 > fec_enet_start_xmit: transmission start triggered > fec_enet_interrupt: interrupt handler > fec_enet_tx: TX path > RTnet: TXI: c669f040 c6531330 0 > fec_enet_tx: dev_kfree_rtskb, sk buffer freed! > > [These are my traces. Obiously the ARP cache is not correct because of > we are not connected to switch] > > # ./rtroute > Host Routing Table > Hash Destination HW Address Device > 00 0.0.0.0 00:00:00:00:00:00 rtlo > 01 255.255.255.1 FF:FF:FF:FF:FF:FF rteth0 > 01 10.10.1.1 00:00:00:00:00:00 rtlo > 01 127.0.0.1 00:00:00:00:00:00 rtlo > > [At this moment I connect the network wire to switch and try again] > > # ./rtroute solicit 10.10.1.2 dev rteth0 > fec_enet_start_xmit: data len is 42 > fec_enet_start_xmit: transmission start triggered > > [I repeat this command several times with the same behavior until I > obtain the output queue full] > > # ./rtroute solicit 10.10.1.2 dev rteth0 > fec_enet_start_xmit: data len is 42 > fec_enet_start_xmit: transmission start triggered > fec_enet_start_xmit: rtnetif_stop_queue! > # ./rtroute solicit 10.10.1.2 dev rteth0 > fec_enet_start_xmit: data len is 42 > RTnet: rteth0: tx queue full!. > hard_start_xmit returned 1 > > Please, anybody has an idea? Do packets arrive on the other side? Maybe you are not getting any IRQs handled with the FEC (or they are not correctly ack'ed - I recall such issues with PPC, dig in the RTnet history). In that case neither the sent skbs will be freed nor incoming replies will be noticed. Jan
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