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Handling indirect descriptors is a capability of the host and
not one that needs to be negotiated. Use the host capabilities field and not the negotiated field when verifying that indirect descriptors are supported. Found with the Redhat Windows viostor driver, which clears the indirect capability in the negotiated caps and then starts using them. Reported and tested by: Leon Dang (ldang@nahannisys.com) MFC after: 2 weeks
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=282784
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@ -316,7 +316,7 @@ vq_getchain(struct vqueue_info *vq, uint16_t *pidx,
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if ((vdir->vd_flags & VRING_DESC_F_INDIRECT) == 0) {
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_vq_record(i, vdir, ctx, iov, n_iov, flags);
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i++;
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} else if ((vs->vs_negotiated_caps &
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} else if ((vs->vs_vc->vc_hv_caps &
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VIRTIO_RING_F_INDIRECT_DESC) == 0) {
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fprintf(stderr,
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"%s: descriptor has forbidden INDIRECT flag, "
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