Date: Sat, 16 Apr 2011 09:34:40 +0000 (UTC) From: Bernhard Schmidt <bschmidt@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r220693 - head/sys/dev/iwn Message-ID: <201104160934.p3G9YeWJ098376@svn.freebsd.org>
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Author: bschmidt Date: Sat Apr 16 09:34:40 2011 New Revision: 220693 URL: http://svn.freebsd.org/changeset/base/220693 Log: In case a new mbuf can't be loaded, reuse the old one. Modified: head/sys/dev/iwn/if_iwn.c Modified: head/sys/dev/iwn/if_iwn.c ============================================================================== --- head/sys/dev/iwn/if_iwn.c Sat Apr 16 08:59:21 2011 (r220692) +++ head/sys/dev/iwn/if_iwn.c Sat Apr 16 09:34:40 2011 (r220693) @@ -2108,6 +2108,18 @@ iwn_rx_done(struct iwn_softc *sc, struct device_printf(sc->sc_dev, "%s: bus_dmamap_load failed, error %d\n", __func__, error); m_freem(m1); + + /* Try to reload the old mbuf. */ + error = bus_dmamap_load(ring->data_dmat, data->map, + mtod(data->m, void *), IWN_RBUF_SIZE, iwn_dma_map_addr, + &paddr, BUS_DMA_NOWAIT); + if (error != 0 && error != EFBIG) { + panic("%s: could not load old RX mbuf", __func__); + } + /* Physical address may have changed. */ + ring->desc[ring->cur] = htole32(paddr >> 8); + bus_dmamap_sync(ring->data_dmat, ring->desc_dma.map, + BUS_DMASYNC_PREWRITE); ifp->if_ierrors++; return; }
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