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author | David S. Miller <davem@davemloft.net> | 2016-08-17 19:22:13 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2016-08-17 19:22:13 -0400 |
commit | 00062a934b7d0c6c5a1a4d774abdba6ebf3af81e (patch) | |
tree | 5319fbee0cf656f4d6af6af6fc56c2aa8a9ac306 /net/batman-adv/bat_algo.c | |
parent | Merge branch 'dsa-abstract-PHY-access' (diff) | |
parent | batman-adv: Indicate netlink socket can be used with netns. (diff) | |
download | linux-dev-00062a934b7d0c6c5a1a4d774abdba6ebf3af81e.tar.xz linux-dev-00062a934b7d0c6c5a1a4d774abdba6ebf3af81e.zip |
Merge tag 'batadv-next-for-davem-20160816' of git://git.open-mesh.org/linux-merge
Simon Wunderlich says:
====================
pull request for net-next: batman-adv 2016-08-16
This feature patchset is all about adding netlink support, which should
supersede our debugfs configuration interface in the long run. It is
especially necessary when batman-adv should be used in different
namespaces, since debugfs can not differentiate between those.
More specifically, the following changes are included:
- Two fixes for namespace handling by Andrew Lunn, checking also the
namespaces for parent interfaces, and supress debugfs entries
for non-default netns
- Implement various netlink commands for the new interface, by
Matthias Schiffer, Andrew Lunn, Sven Eckelmann and Simon Wunderlich
(13 patches):
* routing algorithm list
* hardif list
* translation tables (local and global)
* TTVN for the translation tables
* originator and neighbor tables for B.A.T.M.A.N. IV
and B.A.T.M.A.N. V
* gateway dump functionality for B.A.T.M.A.N. IV
and B.A.T.M.A.N. V
* Bridge Loop Avoidance claims, and corresponding BLA group
* Bridge Loop Avoidance backbone tables
- Finally, mark batman-adv as netns compatible, by Andrew Lunn (1 patch)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/batman-adv/bat_algo.c')
-rw-r--r-- | net/batman-adv/bat_algo.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/net/batman-adv/bat_algo.c b/net/batman-adv/bat_algo.c index 81dbbf569bd4..f2cc50d354d9 100644 --- a/net/batman-adv/bat_algo.c +++ b/net/batman-adv/bat_algo.c @@ -20,12 +20,18 @@ #include <linux/errno.h> #include <linux/list.h> #include <linux/moduleparam.h> +#include <linux/netlink.h> #include <linux/printk.h> #include <linux/seq_file.h> +#include <linux/skbuff.h> #include <linux/stddef.h> #include <linux/string.h> +#include <net/genetlink.h> +#include <net/netlink.h> +#include <uapi/linux/batman_adv.h> #include "bat_algo.h" +#include "netlink.h" char batadv_routing_algo[20] = "BATMAN_IV"; static struct hlist_head batadv_algo_list; @@ -138,3 +144,65 @@ static struct kparam_string batadv_param_string_ra = { module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra, 0644); + +/** + * batadv_algo_dump_entry - fill in information about one supported routing + * algorithm + * @msg: netlink message to be sent back + * @portid: Port to reply to + * @seq: Sequence number of message + * @bat_algo_ops: Algorithm to be dumped + * + * Return: Error number, or 0 on success + */ +static int batadv_algo_dump_entry(struct sk_buff *msg, u32 portid, u32 seq, + struct batadv_algo_ops *bat_algo_ops) +{ + void *hdr; + + hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, + NLM_F_MULTI, BATADV_CMD_GET_ROUTING_ALGOS); + if (!hdr) + return -EMSGSIZE; + + if (nla_put_string(msg, BATADV_ATTR_ALGO_NAME, bat_algo_ops->name)) + goto nla_put_failure; + + genlmsg_end(msg, hdr); + return 0; + + nla_put_failure: + genlmsg_cancel(msg, hdr); + return -EMSGSIZE; +} + +/** + * batadv_algo_dump - fill in information about supported routing + * algorithms + * @msg: netlink message to be sent back + * @cb: Parameters to the netlink request + * + * Return: Length of reply message. + */ +int batadv_algo_dump(struct sk_buff *msg, struct netlink_callback *cb) +{ + int portid = NETLINK_CB(cb->skb).portid; + struct batadv_algo_ops *bat_algo_ops; + int skip = cb->args[0]; + int i = 0; + + hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) { + if (i++ < skip) + continue; + + if (batadv_algo_dump_entry(msg, portid, cb->nlh->nlmsg_seq, + bat_algo_ops)) { + i--; + break; + } + } + + cb->args[0] = i; + + return msg->len; +} |