vq_getchain() can return -1 if some descriptor(s) are invalid and prints
a diagnostic message. So we do a sanity checking on the return value of vq_getchain(). Spotted by: gcc49 Reviewed by: avg MFC after: 4 weeks Sponsored by: iXsystems Inc. Differential Revision: https://reviews.freebsd.org/D15388
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=333622
@ -579,6 +579,7 @@ pci_vtcon_notify_tx(void *vsc, struct vqueue_info *vq)
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while (vq_has_descs(vq)) {
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while (vq_has_descs(vq)) {
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n = vq_getchain(vq, &idx, iov, 1, flags);
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n = vq_getchain(vq, &idx, iov, 1, flags);
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assert(n >= 1);
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if (port != NULL)
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if (port != NULL)
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port->vsp_cb(port, port->vsp_arg, iov, 1);
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port->vsp_cb(port, port->vsp_arg, iov, 1);
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