Dexuan Cui 433e19cf33 Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read() ... Commit a389fcfd2c ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2c ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-01-31 10:59:48 +01:00
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hyperv_net.h	net: use core MTU range checking in virt drivers	2016-10-20 14:51:09 -04:00
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Makefile
netvsc_drv.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-12-10 16:21:55 -05:00
netvsc.c	Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()	2017-01-31 10:59:48 +01:00
rndis_filter.c	hv_netvsc: remove excessive logging on MTU change	2016-11-29 20:50:07 -05:00