From c80d545da3f7c0e534ccd4a780f322f80a92cff1 Mon Sep 17 00:00:00 2001 From: Javier Cardona Date: Thu, 16 Dec 2010 17:37:49 -0800 Subject: mac80211: Let userspace enable and configure vendor specific path selection. Userspace will now be allowed to toggle between the default path selection algorithm (HWMP, implemented in the kernel), and a vendor specific alternative. Also in the same patch, allow userspace to add information elements to mesh beacons. This is accordance with the Extensible Path Selection Framework specified in version 7.0 of the 802.11s draft. Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- net/mac80211/cfg.c | 39 +++++++++++++++++++++++++++++++++++---- 1 file changed, 35 insertions(+), 4 deletions(-) (limited to 'net/mac80211/cfg.c') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 1c94a2ae22ee..ae2c7127a8aa 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1000,6 +1000,36 @@ static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) return (mask >> (parm-1)) & 0x1; } +static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, + const struct mesh_setup *setup) +{ + u8 *new_ie; + const u8 *old_ie; + + /* first allocate the new vendor information element */ + new_ie = NULL; + old_ie = ifmsh->vendor_ie; + + ifmsh->vendor_ie_len = setup->vendor_ie_len; + if (setup->vendor_ie_len) { + new_ie = kmemdup(setup->vendor_ie, setup->vendor_ie_len, + GFP_KERNEL); + if (!new_ie) + return -ENOMEM; + } + + /* now copy the rest of the setup parameters */ + ifmsh->mesh_id_len = setup->mesh_id_len; + memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); + ifmsh->mesh_pp_id = setup->path_sel_proto; + ifmsh->mesh_pm_id = setup->path_metric; + ifmsh->vendor_ie = new_ie; + + kfree(old_ie); + + return 0; +} + static int ieee80211_update_mesh_config(struct wiphy *wiphy, struct net_device *dev, u32 mask, const struct mesh_config *nconf) @@ -1059,11 +1089,12 @@ static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; + int err; - memcpy(&sdata->u.mesh.mshcfg, conf, sizeof(struct mesh_config)); - ifmsh->mesh_id_len = setup->mesh_id_len; - memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); - + memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); + err = copy_mesh_setup(ifmsh, setup); + if (err) + return err; ieee80211_start_mesh(sdata); return 0; -- cgit v1.2.2