Hi Stuart,
Thanks for your suggestion.
Unfortunately, it had no effect. I made this change:
index 5cc8bd6862b..47e639fdc6c 100644
--- sys/dev/pci/if_re_pci.c
+++ sys/dev/pci/if_re_pci.c
@@ -156,9 +156,10 @@ re_pci_attach(struct device *parent, struct device *self,
void *aux)
}
/* Allocate interrupt */
- if (pci_intr_map_msi(pa, &ih) == 0)
- sc->rl_flags |= RL_FLAG_MSI;
- else if (pci_intr_map(pa, &ih) != 0) {
+// if (pci_intr_map_msi(pa, &ih) == 0)
+// sc->rl_flags |= RL_FLAG_MSI;
+// else
+ if (pci_intr_map(pa, &ih) != 0) {
printf(": couldn't map interrupt\n");
return;
}
recompiled the kernel and booted it.
Upon cable disconnect and reconnect, the re0 nic entered "hibernate"
state and came back only with outgoing pings as before. + "re0: watchdog
timeout" in dmesg.
I suppose that on inactivity (or when detecting "no carrier" status) it
somehow disables interrupts or they timeout and become disabled. That's
why it doesn't see any incoming packets. And just upon outgoing packets
it somehow reactivates the interrupts. Does it make any sense?
What else could I try?
Thanks,
Anatoli
On 17/7/20 07:12, Stuart Henderson wrote:
> As hinted in the Reddit post, try disabling MSI. Unlikely to be the permanent
> fix but it will give more information.
>
> In if_re_pci.c:
>
> /* Allocate interrupt */
> if (pci_intr_map_msi(pa, &ih) == 0)
> sc->rl_flags |= RL_FLAG_MSI; else if (pci_intr_map(pa, &ih) !=
> 0) { printf(": couldn't map interrupt\n"); return; }
>
> Remove "if (pci_intr_map_msi ... else" and keep "if (pci_intr_map(..."
>
> There are plenty of systems with re(4) that don't have this problem, it
> definitely doesn't affect every machine and/or every re(4).
>
