Having every vhost-user message printed as part of debug output makes
debugging anything else a bit complicated.
Change per-packet debug() messages in vu_kick_cb() and
vu_send_single() to trace()
[dgibson: switch different messages to trace()]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
vu_remove_watch() is used in vhost_user.c to remove an fd from the global
epoll set. There's nothing really vhost user specific about it though,
so rename, move to util.c and use it in a bunch of places outside
vhost_user.c where it makes things marginally more readable.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
If the iovec array cannot be managed, drop it rather than
passing the second entry to tap_add_packet().
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Replace ASSERT() on the number of iovec in the element and on
the first entry length by a debug() message.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
[sbrivio: Fix typo in failure message]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Set the file descriptor to use to transfer the
backend device state during migration.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
[sbrivio: Fixed nits and coding style here and there]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
vu_dev will be needed to log page update.
Add the parameter to:
vring_used_write()
vu_queue_fill_by_index()
vu_queue_fill()
vring_used_idx_set()
vu_queue_flush()
The new parameter is unused for now.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Under some conditions, linux can provide several buffers
in the same element (multiple entries in the iovec array).
I didn't identify what changed between the kernel guest that
provides one buffer and the one that provides several
(doesn't seem to be a kernel change or a configuration change).
Fix the following assert:
ASSERTION FAILED in virtqueue_map_desc (virtio.c:402): num_sg < max_num_sg
What I can see is the buffer can be splitted in two iovecs:
- vnet header
- packet data
This change manages this special case but the real fix will be to allow
tap_add_packet() to manage iovec array.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
We don't modify the structure in some virtio functions.
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
add virtio and vhost-user functions to connect with QEMU.
$ ./passt --vhost-user
and
# qemu-system-x86_64 ... -m 4G \
-object memory-backend-memfd,id=memfd0,share=on,size=4G \
-numa node,memdev=memfd0 \
-chardev socket,id=chr0,path=/tmp/passt_1.socket \
-netdev vhost-user,id=netdev0,chardev=chr0 \
-device virtio-net,mac=9a:2b:2c:2d:2e:2f,netdev=netdev0 \
...
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: as suggested by lvivier, include <netinet/if_ether.h>
before including <linux/if_ether.h> as C libraries such as musl
__UAPI_DEF_ETHHDR in <netinet/if_ether.h> if they already have
a definition of struct ethhdr]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
