Multicast-ideas-updated » 0001-bridge-Add-export-of-multicast-database-adjacent-to-.patch
| include/linux/if_bridge.h | ||
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#include <linux/netdevice.h>
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#include <uapi/linux/if_bridge.h>
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struct br_ip {
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union {
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__be32 ip4;
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#if IS_ENABLED(CONFIG_IPV6)
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struct in6_addr ip6;
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#endif
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} u;
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__be16 proto;
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};
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struct br_ip_list {
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struct list_head list;
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struct br_ip addr;
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};
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extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
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typedef int br_should_route_hook_t(struct sk_buff *skb);
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extern br_should_route_hook_t __rcu *br_should_route_hook;
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extern int br_multicast_list_adjacent(struct net_device *net_dev,
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struct list_head *br_ip_list);
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#endif
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| net/bridge/br_multicast.c | ||
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*/
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#include <linux/err.h>
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#include <linux/export.h>
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#include <linux/if_ether.h>
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#include <linux/igmp.h>
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#include <linux/jhash.h>
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| ... | ... | |
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return err;
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}
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/**
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* br_multicast_list_adjacent - Returns snooped multicast addresses
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* @dev: The bridge port adjacent to which to retrieve addresses
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* @br_ip_list: The list to store found, snooped multicast IP addresses in
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*
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* Creates a list of IP addresses (struct br_ip_list) sensed by the multicast
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* snooping feature on all bridge ports of dev's bridge device, excluding
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* the addresses from dev itself.
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*
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* Returns the number of items added to br_ip_list.
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*
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* Notes:
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* - br_ip_list needs to be initialized by caller
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* - br_ip_list might contain duplicates in the end
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* (needs to be taken care of by caller)
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* - br_ip_list needs to be freed by caller
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*/
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int br_multicast_list_adjacent(struct net_device *dev,
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struct list_head *br_ip_list)
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{
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struct net_bridge *br;
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struct net_bridge_port *port;
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struct net_bridge_port_group *group;
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struct br_ip_list *entry;
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struct hlist_node *p;
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int count = 0;
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rcu_read_lock();
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if (!br_ip_list || !br_port_exists(dev))
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goto unlock;
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port = br_port_get_rcu(dev);
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if (!port || !port->br)
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goto unlock;
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br = port->br;
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list_for_each_entry_rcu(port, &br->port_list, list) {
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if (!port->dev || port->dev == dev)
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continue;
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hlist_for_each_entry_rcu(group, p, &port->mglist, mglist) {
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entry = kmalloc(sizeof(struct br_ip_list), GFP_ATOMIC);
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if (!entry)
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goto unlock;
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entry->addr = group->addr;
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list_add(&entry->list, br_ip_list);
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count++;
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}
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}
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unlock:
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rcu_read_unlock();
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return count;
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}
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EXPORT_SYMBOL(br_multicast_list_adjacent);
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| net/bridge/br_private.h | ||
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unsigned char addr[6];
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};
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struct br_ip
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{
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union {
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__be32 ip4;
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#if IS_ENABLED(CONFIG_IPV6)
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struct in6_addr ip6;
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#endif
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} u;
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__be16 proto;
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};
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struct net_bridge_fdb_entry
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{
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struct hlist_node hlist;
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