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mac80211: use a structure to hold the mesh config information element 

Signed-off-by: Rui Paulo <rpaulo@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rui Paulo 2009-11-18 18:40:00 +00:00 committed by John W. Linville
parent fe7a5d5c1a
commit 136cfa2861
5 changed files with 31 additions and 24 deletions
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16
include/linux/ieee80211.h
View File

@ -115,7 +115,6 @@
#define IEEE80211_MAX_SSID_LEN 32
#define IEEE80211_MAX_MESH_ID_LEN 32
#define IEEE80211_MESH_CONFIG_LEN 7
#define IEEE80211_QOS_CTL_LEN 2
#define IEEE80211_QOS_CTL_TID_MASK 0x000F
@ -554,6 +553,21 @@ struct ieee80211_tim_ie {
u8 virtual_map[1];
} __attribute__ ((packed));
/**
* struct ieee80211_meshconf_ie
*
* This structure refers to "Mesh Configuration information element"
*/
struct ieee80211_meshconf_ie {
u8 meshconf_psel;
u8 meshconf_pmetric;
u8 meshconf_congest;
u8 meshconf_synch;
u8 meshconf_auth;
u8 meshconf_form;
u8 meshconf_cap;
} __attribute__ ((packed));
/**
* struct ieee80211_rann_ie
*

3
net/mac80211/ieee80211_i.h
View File

@ -798,7 +798,7 @@ struct ieee802_11_elems {
u8 *wmm_param;
struct ieee80211_ht_cap *ht_cap_elem;
struct ieee80211_ht_info *ht_info_elem;
u8 *mesh_config;
struct ieee80211_meshconf_ie *mesh_config;
u8 *mesh_id;
u8 *peer_link;
u8 *preq;
@ -826,7 +826,6 @@ struct ieee802_11_elems {
u8 ext_supp_rates_len;
u8 wmm_info_len;
u8 wmm_param_len;
u8 mesh_config_len;
u8 mesh_id_len;
u8 peer_link_len;
u8 preq_len;

23
net/mac80211/mesh.c
View File

@ -16,12 +16,6 @@
#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
#define IEEE80211_MESH_RANN_INTERVAL (1 * HZ)
#define MESHCONF_PP_OFFSET 0 /* Path Selection Protocol */
#define MESHCONF_PM_OFFSET 1 /* Path Selection Metric */
#define MESHCONF_CC_OFFSET 2 /* Congestion Control Mode */
#define MESHCONF_SP_OFFSET 3 /* Synchronization Protocol */
#define MESHCONF_AUTH_OFFSET 4 /* Authentication Protocol */
#define MESHCONF_CAPAB_OFFSET 6
#define MESHCONF_CAPAB_ACCEPT_PLINKS 0x01
#define MESHCONF_CAPAB_FORWARDING 0x08
@ -87,12 +81,11 @@ bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_dat
*/
if (ifmsh->mesh_id_len == ie->mesh_id_len &&
memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
(ifmsh->mesh_pp_id == *(ie->mesh_config + MESHCONF_PP_OFFSET))&&
(ifmsh->mesh_pm_id == *(ie->mesh_config + MESHCONF_PM_OFFSET))&&
(ifmsh->mesh_cc_id == *(ie->mesh_config + MESHCONF_CC_OFFSET))&&
(ifmsh->mesh_sp_id == *(ie->mesh_config + MESHCONF_SP_OFFSET))&&
(ifmsh->mesh_auth_id == *(ie->mesh_config +
MESHCONF_AUTH_OFFSET)))
(ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
(ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
(ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
(ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
(ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth))
return true;
return false;
@ -105,7 +98,7 @@ bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_dat
*/
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
{
return (*(ie->mesh_config + MESHCONF_CAPAB_OFFSET) &
return (ie->mesh_config->meshconf_cap &
MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
}
@ -262,9 +255,9 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
if (sdata->u.mesh.mesh_id_len)
memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
pos = skb_put(skb, 2 + IEEE80211_MESH_CONFIG_LEN);
pos = skb_put(skb, 2 + sizeof(struct ieee80211_meshconf_ie));
*pos++ = WLAN_EID_MESH_CONFIG;
*pos++ = IEEE80211_MESH_CONFIG_LEN;
*pos++ = sizeof(struct ieee80211_meshconf_ie);
/* Active path selection protocol ID */
*pos++ = sdata->u.mesh.mesh_pp_id;

4
net/mac80211/util.c
View File

@ -666,8 +666,8 @@ u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
elems->mesh_id_len = elen;
break;
case WLAN_EID_MESH_CONFIG:
elems->mesh_config = pos;
elems->mesh_config_len = elen;
if (elen >= sizeof(struct ieee80211_meshconf_ie))
elems->mesh_config = (void *)pos;
break;
case WLAN_EID_PEER_LINK:
elems->peer_link = pos;

9
net/wireless/scan.c
View File

@ -217,7 +217,7 @@ static bool is_mesh(struct cfg80211_bss *a,
a->len_information_elements);
if (!ie)
return false;
if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
if (ie[1] != sizeof(struct ieee80211_meshconf_ie))
return false;
/*
@ -225,7 +225,8 @@ static bool is_mesh(struct cfg80211_bss *a,
* comparing since that may differ between stations taking
* part in the same mesh.
*/
return memcmp(ie + 2, meshcfg, IEEE80211_MESH_CONFIG_LEN - 2) == 0;
return memcmp(ie + 2, meshcfg,
sizeof(struct ieee80211_meshconf_ie) - 2) == 0;
}
static int cmp_bss(struct cfg80211_bss *a,
@ -399,7 +400,7 @@ cfg80211_bss_update(struct cfg80211_registered_device *dev,
res->pub.information_elements,
res->pub.len_information_elements);
if (!meshid || !meshcfg ||
meshcfg[1] != IEEE80211_MESH_CONFIG_LEN) {
meshcfg[1] != sizeof(struct ieee80211_meshconf_ie)) {
/* bogus mesh */
kref_put(&res->ref, bss_release);
return NULL;
@ -865,7 +866,7 @@ ieee80211_bss(struct wiphy *wiphy, struct iw_request_info *info,
break;
case WLAN_EID_MESH_CONFIG:
ismesh = true;
if (ie[1] != IEEE80211_MESH_CONFIG_LEN)
if (ie[1] != sizeof(struct ieee80211_meshconf_ie))
break;
buf = kmalloc(50, GFP_ATOMIC);
if (!buf)