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This patch introduces grant mapping on netback TX path. It replaces grant copy operations, ditching grant copy coalescing along the way. Another solution for copy coalescing is introduced in "xen-netback: Handle guests with too many frags", older guests and Windows can broke before that patch applies. There is a callback (xenvif_zerocopy_callback) from core stack to release the slots back to the guests when kfree_skb or skb_orphan_frags called. It feeds a separate dealloc thread, as scheduling NAPI instance from there is inefficient, therefore we can't do dealloc from the instance. Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| common.h | ||
| interface.c | ||
| Makefile | ||
| netback.c | ||
| xenbus.c | ||