Repository : ssh://git@open-mesh.org/alfred On branch : master commit 47c3456282ba5ad9f9b4f1e4eb43d6172a7a6ae2 Author: Linus Lüssing &lt;linus.luessing(a)c0d3.blue&gt; Date: Tue Mar 13 11:43:57 2018 +0100 alfred: add multicast flags netlink support Dump the list of multicast flags entries via the netlink socket. Signed-off-by: Linus Lüssing &lt;linus.luessing(a)c0d3.blue&gt; Signed-off-by: Sven Eckelmann &lt;sven(a)narfation.org&gt; 47c3456282ba5ad9f9b4f1e4eb43d6172a7a6ae2 batman_adv.h | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ netlink.c | 2 ++ 2 files changed, 64 insertions(+) diff --git a/batman_adv.h b/batman_adv.h index 95ab5db..324a0e1 100644 --- a/batman_adv.h +++ b/batman_adv.h @@ -92,6 +92,53 @@ enum batadv_tt_client_flags { }; /** + * enum batadv_mcast_flags_priv - Private, own multicast flags + * + * These are internal, multicast related flags. Currently they describe certain + * multicast related attributes of the segment this originator bridges into the + * mesh. + * + * Those attributes are used to determine the public multicast flags this + * originator is going to announce via TT. + * + * For netlink, if BATADV_MCAST_FLAGS_BRIDGED is unset then all querier + * related flags are undefined. + */ +enum batadv_mcast_flags_priv { + /** + * @BATADV_MCAST_FLAGS_BRIDGED: There is a bridge on top of the mesh + * interface. + */ + BATADV_MCAST_FLAGS_BRIDGED = (1 << 0), + + /** + * @BATADV_MCAST_FLAGS_QUERIER_IPV4_EXISTS: Whether an IGMP querier + * exists in the mesh + */ + BATADV_MCAST_FLAGS_QUERIER_IPV4_EXISTS = (1 << 1), + + /** + * @BATADV_MCAST_FLAGS_QUERIER_IPV6_EXISTS: Whether an MLD querier + * exists in the mesh + */ + BATADV_MCAST_FLAGS_QUERIER_IPV6_EXISTS = (1 << 2), + + /** + * @BATADV_MCAST_FLAGS_QUERIER_IPV4_SHADOWING: If an IGMP querier + * exists, whether it is potentially shadowing multicast listeners + * (i.e. querier is behind our own bridge segment) + */ + BATADV_MCAST_FLAGS_QUERIER_IPV4_SHADOWING = (1 << 3), + + /** + * @BATADV_MCAST_FLAGS_QUERIER_IPV6_SHADOWING: If an MLD querier + * exists, whether it is potentially shadowing multicast listeners + * (i.e. querier is behind our own bridge segment) + */ + BATADV_MCAST_FLAGS_QUERIER_IPV6_SHADOWING = (1 << 4), +}; + +/** * enum batadv_nl_attrs - batman-adv netlink attributes */ enum batadv_nl_attrs { @@ -287,6 +334,16 @@ enum batadv_nl_attrs { */ BATADV_ATTR_DAT_CACHE_VID, + /** + * @BATADV_ATTR_MCAST_FLAGS: Per originator multicast flags + */ + BATADV_ATTR_MCAST_FLAGS, + + /** + * @BATADV_ATTR_MCAST_FLAGS_PRIV: Private, own multicast flags + */ + BATADV_ATTR_MCAST_FLAGS_PRIV, + /* add attributes above here, update the policy in netlink.c */ /** @@ -381,6 +438,11 @@ enum batadv_nl_commands { */ BATADV_CMD_GET_DAT_CACHE, + /** + * @BATADV_CMD_GET_MCAST_FLAGS: Query list of multicast flags + */ + BATADV_CMD_GET_MCAST_FLAGS, + /* add new commands above here */ /** diff --git a/netlink.c b/netlink.c index 2cd361f..864123f 100644 --- a/netlink.c +++ b/netlink.c @@ -98,6 +98,8 @@ struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { .minlen = ETH_ALEN, .maxlen = ETH_ALEN }, [BATADV_ATTR_DAT_CACHE_VID] = { .type = NLA_U16 }, + [BATADV_ATTR_MCAST_FLAGS] = { .type = NLA_U32 }, + [BATADV_ATTR_MCAST_FLAGS_PRIV] = { .type = NLA_U32 }, }; int missing_mandatory_attrs(struct nlattr *attrs[], const int mandatory[],