net/batman-adv/multicast.c

7 #include "multicast.h"
66  * batadv_mcast_start_timer() - schedule the multicast periodic worker
105  * Checks the presence of an IPv4 multicast router on this node.
126  * Checks the presence of an IPv6 multicast router on this node.
156  * Checks the presence of IPv4 and IPv6 multicast routers on this
160  *	BATADV_NO_FLAGS: Both an IPv4 and IPv6 multicast router is present
161  *	BATADV_MCAST_WANT_NO_RTR4: No IPv4 multicast router is present
162  *	BATADV_MCAST_WANT_NO_RTR6: No IPv6 multicast router is present
163  *	The former two OR'd: no multicast router is present
187  * Checks the presence of IPv4 and IPv6 multicast routers behind a bridge.
190  *	BATADV_NO_FLAGS: Both an IPv4 and IPv6 multicast router is present
191  *	BATADV_MCAST_WANT_NO_RTR4: No IPv4 multicast router is present
192  *	BATADV_MCAST_WANT_NO_RTR6: No IPv6 multicast router is present
193  *	The former two OR'd: no multicast router is present
213  * batadv_mcast_mla_rtr_flags_get() - get multicast router flags
218  * Checks the presence of IPv4 and IPv6 multicast routers on this
222  *	BATADV_NO_FLAGS: Both an IPv4 and IPv6 multicast router is present
223  *	BATADV_MCAST_WANT_NO_RTR4: No IPv4 multicast router is present
224  *	BATADV_MCAST_WANT_NO_RTR6: No IPv6 multicast router is present
225  *	The former two OR'd: no multicast router is present
239  * batadv_mcast_mla_flags_get() - get the new multicast flags
270 		pr_warn_once("No bridge IGMP snooping compiled - multicast optimizations disabled\n");  in batadv_mcast_mla_flags_get()
280 	/* 1) If no querier exists at all, then multicast listeners on  in batadv_mcast_mla_flags_get()
283 	 *    behind the bridge, then this querier might shadow multicast  in batadv_mcast_mla_flags_get()
287 	 * we need all multicast traffic of the according protocol.  in batadv_mcast_mla_flags_get()
304  * @mcast_addr: the multicast address to check
305  * @mcast_list: the list with multicast addresses to search in
323  * batadv_mcast_mla_softif_get_ipv4() - get softif IPv4 multicast listeners
324  * @dev: the device to collect multicast addresses from
326  * @flags: flags indicating the new multicast state
328  * Collects multicast addresses of IPv4 multicast listeners residing
330  * the given mcast_list. In general, multicast listeners provided by
331  * your multicast receiving applications run directly on this node.
389  * batadv_mcast_mla_softif_get_ipv6() - get softif IPv6 multicast listeners
390  * @dev: the device to collect multicast addresses from
392  * @flags: flags indicating the new multicast state
394  * Collects multicast addresses of IPv6 multicast listeners residing
396  * the given mcast_list. In general, multicast listeners provided by
397  * your multicast receiving applications run directly on this node.
471  * batadv_mcast_mla_softif_get() - get softif multicast listeners
472  * @dev: the device to collect multicast addresses from
474  * @flags: flags indicating the new multicast state
476  * Collects multicast addresses of multicast listeners residing
478  * the given mcast_list. In general, multicast listeners provided by
479  * your multicast receiving applications run directly on this node.
482  * instead. Just like with IP addresses and routes, multicast listeners
517  * batadv_mcast_mla_br_addr_cpy() - copy a bridge multicast address
518  * @dst: destination to write to - a multicast MAC address
519  * @src: source to read from - a multicast IP address
521  * Converts a given multicast IPv4/IPv6 address from a bridge
522  * to its matching multicast MAC address and copies it into the given
541  * batadv_mcast_mla_bridge_get() - get bridged-in multicast listeners
542  * @dev: a bridge slave whose bridge to collect multicast addresses from
544  * @flags: flags indicating the new multicast state
546  * Collects multicast addresses of multicast listeners residing
626  * batadv_mcast_mla_list_free() - free a list of multicast addresses
643  * batadv_mcast_mla_tt_retract() - clean up multicast listener announcements
647  * Retracts the announcement of any multicast listener from the
675  * batadv_mcast_mla_tt_add() - add multicast listener announcements
679  * Adds multicast listener announcements from the given mcast_list to the
716  * to our multicast optimizations.
738 			    "%s Querier disappeared - multicast optimizations disabled\n",  in batadv_mcast_querier_log()
742 			    "No %s Querier present - multicast optimizations disabled\n",  in batadv_mcast_querier_log()
762  * @new_flags: flags indicating the new multicast state
767  * which might be relevant to our multicast optimizations.
772  * multicast flags this node is going to set.
800  * @flags: TVLV flags indicating the new multicast state
802  * Whenever the multicast TVLV flags this node announces change, this function
819 		   "Changing multicast flags from '%s' to '[%c%c%c%s%s]'\n",  in batadv_mcast_flags_log()
829  * batadv_mcast_mla_flags_update() - update multicast flags
831  * @flags: flags indicating the new multicast state
833  * Updates the own multicast tvlv with our current multicast related settings,
861  * Updates the own multicast listener announcements in the translation
862  * table as well as the own, announced multicast tvlv container.
900  * Updates the own multicast listener announcements in the translation
901  * table as well as the own, announced multicast tvlv container.
974 	/* link-local multicast listeners behind a bridge are  in batadv_mcast_forw_mode_check_ipv4()
1041 	/* link-local-all-nodes multicast listeners behind a bridge are  in batadv_mcast_forw_mode_check_ipv6()
1055  * @skb: the multicast frame to check
1059  * Checks whether the given multicast ethernet frame has the potential to be
1097  * Return: the number of nodes which want all IPv4 multicast traffic if the
1116  * batadv_mcast_forw_rtr_count() - count nodes with a multicast router
1118  * @protocol: the ethernet protocol type to count multicast routers for
1120  * Return: the number of nodes which want all routable IPv4 multicast traffic
1139  * batadv_mcast_forw_mode() - check on how to forward a multicast packet
1141  * @skb: the multicast packet to check
1185  * batadv_mcast_forw_send_orig() - send a multicast packet to an originator
1187  * @skb: the multicast packet to send
1198 	/* Avoid sending multicast-in-unicast packets to other BLA  in batadv_mcast_forw_send_orig()
1214  * batadv_mcast_forw_tt() - forwards a packet to multicast listeners
1216  * @skb: the multicast packet to transmit
1219  * Sends copies of a frame with multicast destination to any multicast
1264  * @skb: the multicast packet to transmit
1267  * Sends copies of a frame with multicast destination to any node with a
1301  * @skb: The multicast packet to transmit
1304  * Sends copies of a frame with multicast destination to any node with a
1338  * @skb: the multicast packet to transmit
1341  * Sends copies of a frame with multicast destination to any node with a
1367  * @skb: the multicast packet to transmit
1370  * Sends copies of a frame with multicast destination to any node with a
1404  * @skb: The multicast packet to transmit
1407  * Sends copies of a frame with multicast destination to any node with a
1441  * @skb: the multicast packet to transmit
1444  * Sends copies of a frame with multicast destination to any node with a
1468  * batadv_mcast_forw_send() - send packet to any detected multicast recipient
1470  * @skb: the multicast packet to transmit
1474  * Sends copies of a frame with multicast destination to any node that signaled
1518  * @orig: the orig_node which multicast state might have changed of
1519  * @mcast_flags: flags indicating the new multicast state
1564  * @orig: the orig_node which multicast state might have changed of
1565  * @mcast_flags: flags indicating the new multicast state
1609  * @orig: the orig_node which multicast state might have changed of
1610  * @mcast_flags: flags indicating the new multicast state
1654  * @orig: the orig_node which multicast state might have changed of
1655  * @mcast_flags: flags indicating the new multicast state
1699  * @orig: the orig_node which multicast state might have changed of
1700  * @mcast_flags: flags indicating the new multicast state
1742  * batadv_mcast_tvlv_flags_get() - get multicast flags from an OGM TVLV
1743  * @enabled: whether the originator has multicast TVLV support enabled
1744  * @tvlv_value: tvlv buffer containing the multicast flags
1747  * Return: multicast flags for the given tvlv buffer
1773  * batadv_mcast_tvlv_ogm_handler() - process incoming multicast tvlv container
1777  * @tvlv_value: tvlv buffer containing the multicast data
1815  * batadv_mcast_init() - initialize the multicast optimizations structures
1829  * batadv_mcast_mesh_info_put() - put multicast info into a netlink message
1862  * batadv_mcast_flags_dump_entry() - dump one entry of the multicast flags table
1867  * @orig_node: originator to dump the multicast flags of
1906  * batadv_mcast_flags_dump_bucket() - dump one bucket of the multicast flags
1953  * __batadv_mcast_flags_dump() - dump multicast flags table to a netlink socket
2036  * batadv_mcast_flags_dump() - dump multicast flags table to a netlink socket
2063  * batadv_mcast_free() - free the multicast optimizations structures