aleksandr.fedorov_itglobal.com added a comment.
Vincenzo, thanks for the review. The main motivation to write the custom method is optimization. Function vq_getchain() returns virtio descriptors which chained using VRING_DESCR_F_NEXT flag. But viritio-net guest drivers do not represent the available descriptors in the form of a chain, so vq_getchain() returns only one descriptor per call. Also this function has side effect - it's increment vq->vq_last_avail index, which should be decremented if there is no enough descriptors to store the RX packet. CHANGES SINCE LAST ACTION https://reviews.freebsd.org/D20276/new/ REVISION DETAIL https://reviews.freebsd.org/D20276 EMAIL PREFERENCES https://reviews.freebsd.org/settings/panel/emailpreferences/ To: aleksandr.fedorov_itglobal.com, #bhyve, jhb, rgrimes, krion, v.maffione_gmail.com Cc: mizhka_gmail.com, novel, olevole_olevole.ru, freebsd-virtualization-list, evgueni.gavrilov_itglobal.com, bcran _______________________________________________ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
