Author: avos
Date: Sun Mar 26 17:59:51 2017
New Revision: 315992
URL: https://svnweb.freebsd.org/changeset/base/315992
Log:
iwn: fix error handling for one well-known corner case.
Modified:
head/sys/dev/iwn/if_iwn.c
Modified: head/sys/dev/iwn/if_iwn.c
==============================================================================
--- head/sys/dev/iwn/if_iwn.c Sun Mar 26 17:46:42 2017 (r315991)
+++ head/sys/dev/iwn/if_iwn.c Sun Mar 26 17:59:51 2017 (r315992)
@@ -4739,9 +4739,19 @@ iwn_tx_cmd(struct iwn_softc *sc, struct
error = bus_dmamap_load_mbuf_sg(ring->data_dmat, data->map, m,
segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
+ /* XXX fix this */
+ /*
+ * NB: Do not return error;
+ * original mbuf does not exist anymore.
+ */
device_printf(sc->sc_dev,
- "%s: can't map mbuf (error %d)\n", __func__, error);
- return error;
+ "%s: can't map mbuf (error %d)\n",
+ __func__, error);
+ if_inc_counter(ni->ni_vap->iv_ifp,
+ IFCOUNTER_OERRORS, 1);
+ ieee80211_free_node(ni);
+ m_freem(m);
+ return 0;
}
}
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