Date: Thu, 5 Jun 2014 00:38:32 +0000 (UTC) From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r267082 - head/sys/dev/cxgbe Message-ID: <201406050038.s550cWnk011666@svn.freebsd.org>
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Author: np Date: Thu Jun 5 00:38:32 2014 New Revision: 267082 URL: http://svnweb.freebsd.org/changeset/base/267082 Log: cxgbe(4): Properly account for the freelist buffers used when returning early from service_iq due to a budget restriction. This fixes a potential rx hang when using INTx. MFC after: 3 days Modified: head/sys/dev/cxgbe/t4_sge.c Modified: head/sys/dev/cxgbe/t4_sge.c ============================================================================== --- head/sys/dev/cxgbe/t4_sge.c Wed Jun 4 21:17:51 2014 (r267081) +++ head/sys/dev/cxgbe/t4_sge.c Thu Jun 5 00:38:32 2014 (r267082) @@ -1424,8 +1424,15 @@ service_iq(struct sge_iq *iq, int budget } #endif - if (budget) + if (budget) { + if (fl_bufs_used) { + FL_LOCK(fl); + fl->needed += fl_bufs_used; + refill_fl(sc, fl, 32); + FL_UNLOCK(fl); + } return (EINPROGRESS); + } } }
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