Date: Thu, 17 Jan 2008 10:07:21 GMT From: Scott Long <scottl@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 133467 for review Message-ID: <200801171007.m0HA7LE7008871@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=133467 Change 133467 by scottl@scottl-ix on 2008/01/17 10:07:19 Disable a couple of optimizations that result in traffic stopping on the interface. The netfront/xn driver now seems to work reliably. Affected files ... .. //depot/projects/xen31/sys/dev/xen/netfront/netfront.c#9 edit Differences ... ==== //depot/projects/xen31/sys/dev/xen/netfront/netfront.c#9 (text+ko) ==== @@ -948,11 +948,13 @@ np->rx.rsp_cons = i; +#if 0 /* If we get a callback with very few responses, reduce fill target. */ /* NB. Note exponential increase, linear decrease. */ if (((np->rx.req_prod_pvt - np->rx.sring->rsp_prod) > ((3*np->rx_target) / 4)) && (--np->rx_target < np->rx_min_target)) np->rx_target = np->rx_min_target; +#endif network_alloc_rx_buffers(np); @@ -1039,10 +1041,12 @@ struct netfront_info *np = xsc; struct ifnet *ifp = np->xn_ifp; +#if 0 if (!(np->rx.rsp_cons != np->rx.sring->rsp_prod && likely(netfront_carrier_ok(np)) && ifp->if_drv_flags & IFF_DRV_RUNNING)) return; +#endif if (np->tx.rsp_cons != np->tx.sring->rsp_prod) { XN_TX_LOCK(np); xn_txeof(np);
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