drivers/hv/channel_mgmt.c

194 	const guid_t *guid = &channel->offermsg.offer.if_type;
525 		&newchannel->offermsg.offer.if_type,
526 		&newchannel->offermsg.offer.if_instance,
578  * vmbus_process_offer - Process the offer by creating a channel/device
579  * associated with this offer
615 		if (guid_equal(&channel->offermsg.offer.if_type,
616 			       &newchannel->offermsg.offer.if_type) &&
617 		    guid_equal(&channel->offermsg.offer.if_instance,
618 			       &newchannel->offermsg.offer.if_instance)) {
644 		if (newchannel->offermsg.offer.sub_channel_index == 0) {
787 		if (channel->offermsg.offer.sub_channel_index >= ncpu ||
949 				      struct vmbus_channel_offer_channel *offer)
957 			(offer->is_dedicated_interrupt != 0);
958 	channel->sig_event = offer->connection_id;
960 	memcpy(&channel->offermsg, offer,
962 	channel->monitor_grp = (u8)offer->monitorid / 32;
963 	channel->monitor_bit = (u8)offer->monitorid % 32;
968  * find_primary_channel_by_offer - Get the channel object given the new offer.
972 find_primary_channel_by_offer(const struct vmbus_channel_offer_channel *offer)
978 	if (offer->offer.sub_channel_index != 0)
984 		inst1 = &iter->offermsg.offer.if_instance;
985 		inst2 = &offer->offer.if_instance;
998 static bool vmbus_is_valid_offer(const struct vmbus_channel_offer_channel *offer)
1000 	const guid_t *guid = &offer->offer.if_type;
1006 	if (is_hvsock_offer(offer))
1022 	struct vmbus_channel_offer_channel *offer;
1026 	offer = (struct vmbus_channel_offer_channel *)hdr;
1028 	trace_vmbus_onoffer(offer);
1030 	if (!vmbus_is_valid_offer(offer)) {
1031 		pr_err_ratelimited("Invalid offer %d from the host supporting isolation\n",
1032 				   offer->child_relid);
1037 	oldchannel = find_primary_channel_by_offer(offer);
1075 		oldchannel->offermsg.child_relid = offer->child_relid;
1077 		offer_sz = sizeof(*offer);
1078 		if (memcmp(offer, &oldchannel->offermsg, offer_sz) != 0) {
1081 			 * the other field(s) of the offer, e.g. on WS RS5
1082 			 * (Build 17763), the offer->connection_id of the
1086 			pr_debug("vmbus offer changed: relid=%d\n",
1087 				 offer->child_relid);
1089 			print_hex_dump_debug("Old vmbus offer: ",
1093 			print_hex_dump_debug("New vmbus offer: ",
1095 					     offer, offer_sz, false);
1098 			vmbus_setup_channel_state(oldchannel, offer);
1109 	/* Allocate the channel object and save this offer. */
1112 		vmbus_release_relid(offer->child_relid);
1118 	vmbus_setup_channel_state(newchannel, offer);
1134  * vmbus_onoffer_rescind - Rescind offer handler.
1136  * We queue a work item to process this offer synchronously
1150 	 * The offer msg and the corresponding rescind msg
1152 	 * offer comes in first and then the rescind.
1175 		 * We wait here until any channel offer is currently
1199 		 * We failed in processing the offer message;
1215 	 * Now wait for offer handling to complete.
1220 		 * We wait here until any channel offer is currently