Author: jmallett
Date: Mon Nov 19 08:30:29 2012
New Revision: 243264
URL: http://svnweb.freebsd.org/changeset/base/243264
Log:
Prevent hang on ATCA-7220 when transmitting packets < 60 bytes.
Modified:
head/sys/mips/cavium/octe/ethernet-tx.c
Modified: head/sys/mips/cavium/octe/ethernet-tx.c
==============================================================================
--- head/sys/mips/cavium/octe/ethernet-tx.c Mon Nov 19 08:29:53 2012
(r243263)
+++ head/sys/mips/cavium/octe/ethernet-tx.c Mon Nov 19 08:30:29 2012
(r243264)
@@ -116,6 +116,19 @@ int cvm_oct_xmit(struct mbuf *m, struct
}
}
+#ifdef OCTEON_VENDOR_RADISYS
+ /*
+ * The RSYS4GBE will hang if asked to transmit a packet less than 60
bytes.
+ */
+ if (__predict_false(m->m_pkthdr.len < 60) &&
+ cvmx_sysinfo_get()->board_type ==
CVMX_BOARD_TYPE_CUST_RADISYS_RSYS4GBE) {
+ static uint8_t pad[60];
+
+ if (!m_append(m, sizeof pad - m->m_pkthdr.len, pad))
+ printf("%s: unable to pad small packet.", __func__);
+ }
+#endif
+
/*
* If the packet is not fragmented.
*/
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