In the loop to copy virtio-net header to the descriptor buffer,
destination pointer was incremented instead of the source
pointer.
Coverity issue: 277240
Fixes: 82c93a567d3b ("examples/vhost: move to safe GPA translation API")
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This patch uses the new rte_vhost_va_from_guest_pa() API
to ensure the application doesn't perform out-of-bound
accesses either because of a malicious guest providing an
incorrect descriptor length, or because the buffer is
contiguous in guest physical address space but not in the
host process virtual address space.
This issue has been assigned CVE-2018-1059.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Users of librte_vhost currently implement the vring call operation
themselves. Each caller performs the operation slightly differently.
This patch introduces a new librte_vhost API called
rte_vhost_vring_call() that performs the operation so that vhost-user
applications don't have to duplicate it.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
Replace the BSD license header with the SPDX tag for files
with only an Intel copyright on them.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Different drivers use internal macros like force_inline for compiler
always inline feature.
Standardizing it through __rte_always_inline macro.
Verified the change by comparing the output binary file.
No difference found in the output binary file with this change.
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Fixing the below error by returning from the function early
when count == 0.
Issue flagged by GCC 7.1.1
examples/vhost/virtio_net.c:370:38: error: ‘desc_indexes[0]’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
rte_prefetch0(&vr->desc[desc_indexes[0]]);
Fixes: ca059fa5e290 ("examples/vhost: demonstrate the new generic APIs")
Cc: stable@dpdk.org
Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Now DPDK vhost lib has been generic enough, that it can be used to
implement any vhost-user drivers.
For example, this patch implements a very simple vhost-user net driver,
mainly for demonstrating how to use those generic vhost APIs.
And when the --builtin-net-driver option is used, the example virtio-net
driver code will be invoked, instead of the one provided from the vhost
library.
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
