Paul Durrant a02eb4732c xen-netback: worse-case estimate in xenvif_rx_action is underestimating ... The worse-case estimate for skb ring slot usage in xenvif_rx_action() fails to take fragment page_offset into account. The page_offset does, however, affect the number of times the fragmentation code calls start_new_rx_buffer() (i.e. consume another slot) and the worse-case should assume that will always return true. This patch adds the page_offset into the DIV_ROUND_UP for each frag. Unfortunately some frontends aggressively limit the number of requests they post into the shared ring so to avoid an estimate that is 'too' pessimal it is capped at MAX_SKB_FRAGS. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Cc: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David S. Miller <davem@davemloft.net>		2014-03-29 18:50:34 -04:00
..
common.h	xen-netback: Fix Rx stall due to race condition	2014-02-05 16:24:08 -08:00
interface.c	xen-netback: use skb_is_gso in xenvif_start_xmit	2014-03-12 15:36:32 -04:00
Makefile
netback.c	xen-netback: worse-case estimate in xenvif_rx_action is underestimating	2014-03-29 18:50:34 -04:00
xenbus.c	drivers/net/*: Fix FSF address in file headers	2013-12-06 12:37:55 -05:00