/* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * PF_INET6 protocol dispatch tables. * * Authors: Pedro Roque * * 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. */ /* * Changes: * * Vince Laviano (vince@cs.stanford.edu) 16 May 2001 * - Removed unused variable 'inet6_protocol_base' * - Modified inet6_del_protocol() to correctly maintain copy bit. */ #include #include #include #include #if IS_ENABLED(CONFIG_IPV6) const struct inet6_protocol __rcu *inet6_protos[MAX_INET_PROTOS] __read_mostly; EXPORT_SYMBOL(inet6_protos); int inet6_add_protocol(const struct inet6_protocol *prot, unsigned char protocol) { return !cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol], NULL, prot) ? 0 : -1; } EXPORT_SYMBOL(inet6_add_protocol); int inet6_del_protocol(const struct inet6_protocol *prot, unsigned char protocol) { int ret; ret = (cmpxchg((const struct inet6_protocol **)&inet6_protos[protocol], prot, NULL) == prot) ? 0 : -1; synchronize_net(); return ret; } EXPORT_SYMBOL(inet6_del_protocol); #endif const struct net_offload __rcu *inet6_offloads[MAX_INET_PROTOS] __read_mostly; EXPORT_SYMBOL(inet6_offloads); int inet6_add_offload(const struct net_offload *prot, unsigned char protocol) { return !cmpxchg((const struct net_offload **)&inet6_offloads[protocol], NULL, prot) ? 0 : -1; } EXPORT_SYMBOL(inet6_add_offload); int inet6_del_offload(const struct net_offload *prot, unsigned char protocol) { int ret; ret = (cmpxchg((const struct net_offload **)&inet6_offloads[protocol], prot, NULL) == prot) ? 0 : -1; synchronize_net(); return ret; } EXPORT_SYMBOL(inet6_del_offload); mp;id=433e19cf33d34bb6751c874a9c00980552fe508c'>commitdiff
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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 /sound/pci/ac97/Makefile
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 'sound/pci/ac97/Makefile')