diff options
| author | Sven Eckelmann <sven@narfation.org> | 2018-11-23 15:26:14 +0300 |
|---|---|---|
| committer | Simon Wunderlich <sw@simonwunderlich.de> | 2019-02-09 16:28:15 +0300 |
| commit | 6c57cde6800bae2361b8ac14a5924ffc592b3a90 (patch) | |
| tree | 864e22c497dc98dde690197ecf16ee6f97f55b5f | |
| parent | f75b56bc91122e2934e2cb458f98727c41d535c7 (diff) | |
| download | linux-6c57cde6800bae2361b8ac14a5924ffc592b3a90.tar.xz | |
batman-adv: Add network_coding mesh genl configuration
The mesh interface can use (in an homogeneous mesh) network coding, a
mechanism that aims to increase the overall network throughput by fusing
multiple packets in one transmission.
The BATADV_CMD_SET_MESH/BATADV_CMD_GET_MESH commands allow to set/get the
configuration of this feature using the BATADV_ATTR_NETWORK_CODING_ENABLED
attribute. Setting the u8 to zero will disable this feature and setting it
to something else is enabling this feature.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
| -rw-r--r-- | include/uapi/linux/batman_adv.h | 7 | ||||
| -rw-r--r-- | net/batman-adv/netlink.c | 17 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/uapi/linux/batman_adv.h b/include/uapi/linux/batman_adv.h index 38caaaae8a05..a4239c147bde 100644 --- a/include/uapi/linux/batman_adv.h +++ b/include/uapi/linux/batman_adv.h @@ -464,6 +464,13 @@ enum batadv_nl_attrs { */ BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED, + /** + * @BATADV_ATTR_NETWORK_CODING_ENABLED: whether Network Coding (using + * some magic to send fewer wifi packets but still the same content) is + * enabled or not. + */ + BATADV_ATTR_NETWORK_CODING_ENABLED, + /* add attributes above here, update the policy in netlink.c */ /** diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c index 475bd15f806c..6f01f92e6ab3 100644 --- a/net/batman-adv/netlink.c +++ b/net/batman-adv/netlink.c @@ -55,6 +55,7 @@ #include "hard-interface.h" #include "log.h" #include "multicast.h" +#include "network-coding.h" #include "originator.h" #include "soft-interface.h" #include "tp_meter.h" @@ -156,6 +157,7 @@ static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = { [BATADV_ATTR_HOP_PENALTY] = { .type = NLA_U8 }, [BATADV_ATTR_LOG_LEVEL] = { .type = NLA_U32 }, [BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NLA_U8 }, + [BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NLA_U8 }, }; /** @@ -350,6 +352,12 @@ static int batadv_netlink_mesh_fill(struct sk_buff *msg, goto nla_put_failure; #endif /* CONFIG_BATMAN_ADV_MCAST */ +#ifdef CONFIG_BATMAN_ADV_NC + if (nla_put_u8(msg, BATADV_ATTR_NETWORK_CODING_ENABLED, + !!atomic_read(&bat_priv->network_coding))) + goto nla_put_failure; +#endif /* CONFIG_BATMAN_ADV_NC */ + if (primary_if) batadv_hardif_put(primary_if); @@ -579,6 +587,15 @@ static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info) } #endif /* CONFIG_BATMAN_ADV_MCAST */ +#ifdef CONFIG_BATMAN_ADV_NC + if (info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED]) { + attr = info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED]; + + atomic_set(&bat_priv->network_coding, !!nla_get_u8(attr)); + batadv_nc_status_update(bat_priv->soft_iface); + } +#endif /* CONFIG_BATMAN_ADV_NC */ + batadv_netlink_notify_mesh(bat_priv); return 0; |