The nm_register callback needs to call nm_set_native_flags() or nm_clear_native_flags() once the device has been stopped. However, in the current implementation this is not true, as the device is stopped by vtnet_init_locked(). This causes race conditions where the driver crashes as soon as it dequeues netmap buffers assuming they are mbufs (or the other way around). To fix the issue, we extend vtnet_init_locked() with a second argument that, if not zero, will set/clear the netmap flags. This results in a huge simplification of the nm_register callback itself. Also, use netmap_reset() to check if a ring is going to be re-initialized in netmap mode. MFC after: 1 week |
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if_ptnet.c | ||
if_re_netmap.h | ||
if_vtnet_netmap.h | ||
netmap_bdg.c | ||
netmap_bdg.h | ||
netmap_freebsd.c | ||
netmap_generic.c | ||
netmap_kern.h | ||
netmap_kloop.c | ||
netmap_legacy.c | ||
netmap_mbq.c | ||
netmap_mbq.h | ||
netmap_mem2.c | ||
netmap_mem2.h | ||
netmap_monitor.c | ||
netmap_null.c | ||
netmap_offloadings.c | ||
netmap_pipe.c | ||
netmap_vale.c | ||
netmap.c |