Author: sephe Date: Tue Feb 23 09:25:20 2016 New Revision: 295918 URL: https://svnweb.freebsd.org/changeset/base/295918
Log: hyperv/hn: Use IFQ_DRV_PREPEND instead of IF_PREPEND IF_PREPEND promises out-of-order packet sending when the TX desc list is depleted. It was overlooked and copied blindly when the transmission path was partially rewritten. MFC after: 1 week Sponsored by: Microsoft OSTC Differential Revision: https://reviews.freebsd.org/D5386 Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c ============================================================================== --- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Tue Feb 23 09:22:00 2016 (r295917) +++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c Tue Feb 23 09:25:20 2016 (r295918) @@ -998,14 +998,14 @@ hn_start_locked(struct hn_tx_ring *txr, * dispatch this packet sending (and sending of any * following up packets) to tx taskqueue. */ - IF_PREPEND(&ifp->if_snd, m_head); + IFQ_DRV_PREPEND(&ifp->if_snd, m_head); return 1; } txd = hn_txdesc_get(txr); if (txd == NULL) { txr->hn_no_txdescs++; - IF_PREPEND(&ifp->if_snd, m_head); + IFQ_DRV_PREPEND(&ifp->if_snd, m_head); atomic_set_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); break; } @@ -1019,7 +1019,7 @@ hn_start_locked(struct hn_tx_ring *txr, error = hn_send_pkt(ifp, device_ctx, txr, txd); if (__predict_false(error)) { /* txd is freed, but m_head is not */ - IF_PREPEND(&ifp->if_snd, m_head); + IFQ_DRV_PREPEND(&ifp->if_snd, m_head); atomic_set_int(&ifp->if_drv_flags, IFF_DRV_OACTIVE); break; } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
