net/psample/psample.c

41 				 struct psample_group *group,
52 	ret = nla_put_u32(msg, PSAMPLE_ATTR_SAMPLE_GROUP, group->group_num);
56 	ret = nla_put_u32(msg, PSAMPLE_ATTR_GROUP_REFCOUNT, group->refcount);
60 	ret = nla_put_u32(msg, PSAMPLE_ATTR_GROUP_SEQ, group->seq);
75 	struct psample_group *group;
81 	list_for_each_entry(group, &psample_groups_list, list) {
82 		if (!net_eq(group->net, sock_net(msg->sk)))
88 		err = psample_group_nl_fill(msg, group, PSAMPLE_CMD_NEW_GROUP,
123 static void psample_group_notify(struct psample_group *group,
133 	err = psample_group_nl_fill(msg, group, cmd, 0, 0, NLM_F_MULTI);
135 		genlmsg_multicast_netns(&psample_nl_family, group->net, msg, 0,
144 	struct psample_group *group;
146 	group = kzalloc(sizeof(*group), GFP_ATOMIC);
147 	if (!group)
150 	group->net = net;
151 	group->group_num = group_num;
152 	list_add_tail(&group->list, &psample_groups_list);
154 	psample_group_notify(group, PSAMPLE_CMD_NEW_GROUP);
155 	return group;
158 static void psample_group_destroy(struct psample_group *group)
160 	psample_group_notify(group, PSAMPLE_CMD_DEL_GROUP);
161 	list_del(&group->list);
162 	kfree_rcu(group, rcu);
168 	struct psample_group *group;
170 	list_for_each_entry(group, &psample_groups_list, list)
171 		if ((group->group_num == group_num) && (group->net == net))
172 			return group;
178 	struct psample_group *group;
182 	group = psample_group_lookup(net, group_num);
183 	if (!group) {
184 		group = psample_group_create(net, group_num);
185 		if (!group)
188 	group->refcount++;
192 	return group;
196 void psample_group_take(struct psample_group *group)
199 	group->refcount++;
204 void psample_group_put(struct psample_group *group)
208 	if (--group->refcount == 0)
209 		psample_group_destroy(group);
363 void psample_sample_packet(struct psample_group *group, struct sk_buff *skb,
431 	ret = nla_put_u32(nl_skb, PSAMPLE_ATTR_SAMPLE_GROUP, group->group_num);
435 	ret = nla_put_u32(nl_skb, PSAMPLE_ATTR_GROUP_SEQ, group->seq++);
490 	genlmsg_multicast_netns(&psample_nl_family, group->net, nl_skb, 0,