#ifndef _NET_MRP_H #define _NET_MRP_H #define MRP_END_MARK 0x0 struct mrp_pdu_hdr { u8 version; }; struct mrp_msg_hdr { u8 attrtype; u8 attrlen; }; struct mrp_vecattr_hdr { __be16 lenflags; unsigned char firstattrvalue[]; #define MRP_VECATTR_HDR_LEN_MASK cpu_to_be16(0x1FFF) #define MRP_VECATTR_HDR_FLAG_LA cpu_to_be16(0x2000) }; enum mrp_vecattr_event { MRP_VECATTR_EVENT_NEW, MRP_VECATTR_EVENT_JOIN_IN, MRP_VECATTR_EVENT_IN, MRP_VECATTR_EVENT_JOIN_MT, MRP_VECATTR_EVENT_MT, MRP_VECATTR_EVENT_LV, __MRP_VECATTR_EVENT_MAX }; struct mrp_skb_cb { struct mrp_msg_hdr *mh; struct mrp_vecattr_hdr *vah; unsigned char attrvalue[]; }; static inline struct mrp_skb_cb *mrp_cb(struct sk_buff *skb) { BUILD_BUG_ON(sizeof(struct mrp_skb_cb) > FIELD_SIZEOF(struct sk_buff, cb)); return (struct mrp_skb_cb *)skb->cb; } enum mrp_applicant_state { MRP_APPLICANT_INVALID, MRP_APPLICANT_VO, MRP_APPLICANT_VP, MRP_APPLICANT_VN, MRP_APPLICANT_AN, MRP_APPLICANT_AA, MRP_APPLICANT_QA, MRP_APPLICANT_LA, MRP_APPLICANT_AO, MRP_APPLICANT_QO, MRP_APPLICANT_AP, MRP_APPLICANT_QP, __MRP_APPLICANT_MAX }; #define MRP_APPLICANT_MAX (__MRP_APPLICANT_MAX - 1) enum mrp_event { MRP_EVENT_NEW, MRP_EVENT_JOIN, MRP_EVENT_LV, MRP_EVENT_TX, MRP_EVENT_R_NEW, MRP_EVENT_R_JOIN_IN, MRP_EVENT_R_IN, MRP_EVENT_R_JOIN_MT, MRP_EVENT_R_MT, MRP_EVENT_R_LV, MRP_EVENT_R_LA, MRP_EVENT_REDECLARE, MRP_EVENT_PERIODIC, __MRP_EVENT_MAX }; #define MRP_EVENT_MAX (__MRP_EVENT_MAX - 1) enum mrp_tx_action { MRP_TX_ACTION_NONE, MRP_TX_ACTION_S_NEW, MRP_TX_ACTION_S_JOIN_IN, MRP_TX_ACTION_S_JOIN_IN_OPTIONAL, MRP_TX_ACTION_S_IN_OPTIONAL, MRP_TX_ACTION_S_LV, }; struct mrp_attr { struct rb_node node; enum mrp_applicant_state state; u8 type; u8 len; unsigned char value[]; }; enum mrp_applications { MRP_APPLICATION_MVRP, __MRP_APPLICATION_MAX }; #define MRP_APPLICATION_MAX (__MRP_APPLICATION_MAX - 1) struct mrp_application { enum mrp_applications type; unsigned int maxattr; struct packet_type pkttype; unsigned char group_address[ETH_ALEN]; u8 version; }; struct mrp_applicant { struct mrp_application *app; struct net_device *dev; struct timer_list join_timer; struct timer_list periodic_timer; spinlock_t lock; struct sk_buff_head queue; struct sk_buff *pdu; struct rb_root mad; struct rcu_head rcu; }; struct mrp_port { struct mrp_applicant __rcu *applicants[MRP_APPLICATION_MAX + 1]; struct rcu_head rcu; }; int mrp_register_application(struct mrp_application *app); void mrp_unregister_application(struct mrp_application *app); int mrp_init_applicant(struct net_device *dev, struct mrp_application *app); void mrp_uninit_applicant(struct net_device *dev, struct mrp_application *app); int mrp_request_join(const struct net_device *dev, const struct mrp_application *app, const void *value, u8 len, u8 type); void mrp_request_leave(const struct net_device *dev, const struct mrp_application *app, const void *value, u8 len, u8 type); #endif /* _NET_MRP_H */ nclude/uapi/asm-generic?id=433e19cf33d34bb6751c874a9c00980552fe508c'>asm-generic
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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 /include/uapi/asm-generic
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 'include/uapi/asm-generic')