+-- On Tue, 9 Feb 2016, P J P wrote --+ | +-- On Fri, 5 Feb 2016, Jason Wang wrote --+ | | I suspect this could even work. Consider after realizing, s->stop is | | zero, any attempt to set STARTPG will fail? | | Ie after 'pci_ne2000_realize'? It does not seem to set or reset s->stop | register. | | | This may not be sufficient, consider: | | | | set start to 1 | | set stop to 100 | | set boundary to 50 | | then set stop to 10 | | I think any attempts to define the ring buffer limits should reset | 'boundary' and 'curpag' registers to s->start(STARTPG). I wonder if a driver | should be allowed to fiddle with the ring buffers location inside contorller's | memory. It does not seem right. | | | I'm thinking maybe we need check during receiving like what we did in | | dd793a74882477ca38d49e191110c17dfee51dcc? | | Check if (s->start == s->stop) at each receive call?
Ping...Jason? -- - P J P 47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
