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| /freebsd-11-stable/sys/dev/cxgbe/ | ||
| H A D | adapter.h | diff 255050 Thu Aug 29 23:49:51 MDT 2013 np Implement support for rx buffer packing. Enable it by default for T5 cards. This is a T4 and T5 chip feature which lets the chip deliver multiple Ethernet frames in a single buffer. This is more efficient within the chip, in the driver, and reduces wastage of space in rx buffers. - Always allocate rx buffers from the jumbop zone, no matter what the MTU is. Do not use the normal cluster refcounting mechanism. - Reserve space for an mbuf and a refcount in the cluster itself and let the chip DMA multiple frames in the rest. - Use the embedded mbuf for the first frame and allocate mbufs on the fly for any additional frames delivered in the cluster. Each of these mbufs has a reference on the underlying cluster. |
| H A D | t4_sge.c | diff 255050 Thu Aug 29 23:49:51 MDT 2013 np Implement support for rx buffer packing. Enable it by default for T5 cards. This is a T4 and T5 chip feature which lets the chip deliver multiple Ethernet frames in a single buffer. This is more efficient within the chip, in the driver, and reduces wastage of space in rx buffers. - Always allocate rx buffers from the jumbop zone, no matter what the MTU is. Do not use the normal cluster refcounting mechanism. - Reserve space for an mbuf and a refcount in the cluster itself and let the chip DMA multiple frames in the rest. - Use the embedded mbuf for the first frame and allocate mbufs on the fly for any additional frames delivered in the cluster. Each of these mbufs has a reference on the underlying cluster. |
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