Zoltan Kiss 59ae9fc670 xen-netback: Fix handling of skbs requiring too many slots ... A recent commit (a02eb4 "xen-netback: worse-case estimate in xenvif_rx_action is underestimating") capped the slot estimation to MAX_SKB_FRAGS, but that triggers the next BUG_ON a few lines down, as the packet consumes more slots than estimated. This patch introduces full_coalesce on the skb callback buffer, which is used in start_new_rx_buffer() to decide whether netback needs coalescing more aggresively. By doing that, no packet should need more than (XEN_NETIF_MAX_TX_SIZE + 1) / PAGE_SIZE data slots (excluding the optional GSO slot, it doesn't carry data, therefore irrelevant in this case), as the provided buffers are fully utilized. Signed-off-by: Zoltan Kiss <zoltan.kiss@citrix.com> Cc: Paul Durrant <paul.durrant@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: David Vrabel <david.vrabel@citrix.com> Reviewed-by: Paul Durrant <paul.durrant@gmail.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-06-05 15:09:08 -07:00
..
common.h	xen-netback: fix race between napi_complete() and interrupt handler	2014-05-16 16:27:23 -04:00
interface.c	xen-netback: fix race between napi_complete() and interrupt handler	2014-05-16 16:27:23 -04:00
Makefile
netback.c	xen-netback: Fix handling of skbs requiring too many slots	2014-06-05 15:09:08 -07:00
xenbus.c	drivers/net/*: Fix FSF address in file headers	2013-12-06 12:37:55 -05:00