Revision 0825ce70318e9c576acbdd5ceb4a8d563263cf8f authored by Eric Dumazet on 21 September 2018, 22:27:51 UTC, committed by David S. Miller on 24 September 2018, 04:55:25 UTC
As diagnosed by Song Liu, ndo_poll_controller() can be very dangerous on loaded hosts, since the cpu calling ndo_poll_controller() might steal all NAPI contexts (for all RX/TX queues of the NIC). This capture can last for unlimited amount of time, since one cpu is generally not able to drain all the queues under load. nfp uses NAPI for TX completions, so we better let core networking stack call the napi->poll() to avoid the capture. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Tested-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Kconfig
#
# 9P protocol configuration
#
menuconfig NET_9P
depends on NET
tristate "Plan 9 Resource Sharing Support (9P2000)"
help
If you say Y here, you will get experimental support for
Plan 9 resource sharing via the 9P2000 protocol.
See <http://v9fs.sf.net> for more information.
If unsure, say N.
if NET_9P
config NET_9P_VIRTIO
depends on VIRTIO
tristate "9P Virtio Transport"
help
This builds support for a transports between
guest partitions and a host partition.
config NET_9P_XEN
depends on XEN
select XEN_XENBUS_FRONTEND
tristate "9P Xen Transport"
help
This builds support for a transport for 9pfs between
two Xen domains.
config NET_9P_RDMA
depends on INET && INFINIBAND && INFINIBAND_ADDR_TRANS
tristate "9P RDMA Transport (Experimental)"
help
This builds support for an RDMA transport.
config NET_9P_DEBUG
bool "Debug information"
help
Say Y if you want the 9P subsystem to log debug information.
endif
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