Date: Fri, 17 Jun 2016 16:26:20 GMT From: vincenzo@FreeBSD.org To: svn-soc-all@FreeBSD.org Subject: socsvn commit: r305303 - soc2016/vincenzo/head/sys/dev/netmap Message-ID: <201606171626.u5HGQKau027448@socsvn.freebsd.org>
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Author: vincenzo Date: Fri Jun 17 16:26:20 2016 New Revision: 305303 URL: http://svnweb.FreeBSD.org/socsvn/?view=rev&rev=305303 Log: freebsd: ptnet_transmit: drop if no available space in the ring Modified: soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c Modified: soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c ============================================================================== --- soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c Fri Jun 17 16:26:11 2016 (r305302) +++ soc2016/vincenzo/head/sys/dev/netmap/if_ptnet.c Fri Jun 17 16:26:20 2016 (r305303) @@ -764,6 +764,14 @@ nmbuf = NMB(na, slot); nmbuf_bytes = 0; + if (head == ring->tail) { + device_printf(sc->dev, "%s: Drop, no free slots\n", __func__); + m_freem(m); + ptring->guest_need_kick = 1; + + return 0; + } + for (mf = m; mf; mf = mf->m_next) { uint8_t *mdata = mf->m_data; int mlen = mf->m_len;
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