Author: np Date: Mon Jun 23 05:39:10 2014 New Revision: 267764 URL: http://svnweb.freebsd.org/changeset/base/267764
Log: MFC r267689: Consider the total number of descriptors available (and not just those that are ready to be reclaimed) when deciding whether to resume tx after a stall. Modified: stable/10/sys/dev/cxgbe/t4_sge.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/cxgbe/t4_sge.c ============================================================================== --- stable/10/sys/dev/cxgbe/t4_sge.c Mon Jun 23 05:17:39 2014 (r267763) +++ stable/10/sys/dev/cxgbe/t4_sge.c Mon Jun 23 05:39:10 2014 (r267764) @@ -1708,7 +1708,7 @@ t4_wrq_tx_locked(struct adapter *sc, str can_reclaim = reclaimable(eq); if (__predict_false(eq->flags & EQ_STALLED)) { - if (can_reclaim < tx_resume_threshold(eq)) + if (eq->avail + can_reclaim < tx_resume_threshold(eq)) return; eq->flags &= ~EQ_STALLED; eq->unstalled++; @@ -1829,7 +1829,7 @@ t4_eth_tx(struct ifnet *ifp, struct sge_ can_reclaim = reclaimable(eq); if (__predict_false(eq->flags & EQ_STALLED)) { - if (can_reclaim < tx_resume_threshold(eq)) { + if (eq->avail + can_reclaim < tx_resume_threshold(eq)) { txq->m = m; return (0); } @@ -2003,7 +2003,8 @@ t4_update_fl_bufsize(struct ifnet *ifp) int can_resume_tx(struct sge_eq *eq) { - return (reclaimable(eq) >= tx_resume_threshold(eq)); + + return (eq->avail + reclaimable(eq) >= tx_resume_threshold(eq)); } static inline void _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"