/* * 6LoWPAN IPv6 Fragment Header compression according to RFC6282 * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include "nhc.h" #define LOWPAN_NHC_FRAGMENT_IDLEN 1 #define LOWPAN_NHC_FRAGMENT_ID_0 0xe4 #define LOWPAN_NHC_FRAGMENT_MASK_0 0xfe static void fragment_nhid_setup(struct lowpan_nhc *nhc) { nhc->id[0] = LOWPAN_NHC_FRAGMENT_ID_0; nhc->idmask[0] = LOWPAN_NHC_FRAGMENT_MASK_0; } LOWPAN_NHC(nhc_fragment, "RFC6282 Fragment", NEXTHDR_FRAGMENT, 0, fragment_nhid_setup, LOWPAN_NHC_FRAGMENT_IDLEN, NULL, NULL); module_lowpan_nhc(nhc_fragment); MODULE_DESCRIPTION("6LoWPAN next header RFC6282 Fragment compression"); MODULE_LICENSE("GPL"); cgit.cgi/linux/net-next.git/'>net-next.git
net-next plumbingsTobias Klauser
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /tools/perf/bench/mem-memcpy-arch.h
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("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: a389fcfd2cb5 ("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>
Diffstat (limited to 'tools/perf/bench/mem-memcpy-arch.h')