Revert "mac80211: use a struct for bss->mesh_config"
This reverts commit 6c4711b469.
That patch breaks mesh config comparison between beacons/probe reponses, so
every beacon from a mesh network would be added as a new bss. Since the
comparison has to be performed for every received beacon I believe it is best to
save the mesh config in a format easy to compare, rather than do a bunch of
unaligned accesses to compare field by field.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville
parent
8eefca4888
commit
2473670163
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@ -69,14 +69,6 @@ struct ieee80211_fragment_entry {
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u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
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};
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struct bss_mesh_config {
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u32 path_proto_id;
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u32 path_metric_id;
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u32 cong_control_id;
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u32 channel_precedence;
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u8 mesh_version;
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};
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struct ieee80211_sta_bss {
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struct list_head list;
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@ -102,7 +94,7 @@ struct ieee80211_sta_bss {
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#ifdef CONFIG_MAC80211_MESH
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u8 *mesh_id;
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size_t mesh_id_len;
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struct bss_mesh_config *mesh_cfg;
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u8 *mesh_cfg;
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#endif
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#define IEEE80211_MAX_SUPP_RATES 32
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u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
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@ -121,8 +113,7 @@ struct ieee80211_sta_bss {
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u8 erp_value;
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};
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static inline
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struct bss_mesh_config *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
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static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss)
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{
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#ifdef CONFIG_MAC80211_MESH
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return bss->mesh_cfg;
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@ -27,7 +27,6 @@
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#include <linux/rtnetlink.h>
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#include <net/iw_handler.h>
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#include <asm/types.h>
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#include <asm/unaligned.h>
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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@ -2123,11 +2122,6 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq,
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}
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#ifdef CONFIG_MAC80211_MESH
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static inline u32 bss_mesh_cfg_get(u8 *mesh_cfg, u8 offset)
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{
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return be32_to_cpu(get_unaligned((__be32 *) (mesh_cfg + offset)));
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}
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static struct ieee80211_sta_bss *
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ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
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u8 *mesh_cfg, int freq)
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@ -2167,7 +2161,7 @@ ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
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if (!bss)
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return NULL;
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bss->mesh_cfg = kmalloc(sizeof(struct bss_mesh_config), GFP_ATOMIC);
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bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC);
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if (!bss->mesh_cfg) {
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kfree(bss);
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return NULL;
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@ -2185,12 +2179,7 @@ ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len,
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atomic_inc(&bss->users);
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atomic_inc(&bss->users);
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bss->mesh_cfg->mesh_version = mesh_cfg[0];
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bss->mesh_cfg->path_proto_id = bss_mesh_cfg_get(mesh_cfg, PP_OFFSET);
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bss->mesh_cfg->path_metric_id = bss_mesh_cfg_get(mesh_cfg, PM_OFFSET);
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bss->mesh_cfg->cong_control_id = bss_mesh_cfg_get(mesh_cfg, CC_OFFSET);
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bss->mesh_cfg->channel_precedence = bss_mesh_cfg_get(mesh_cfg,
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CP_OFFSET);
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memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN);
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bss->mesh_id_len = mesh_id_len;
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bss->freq = freq;
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spin_lock_bh(&local->sta_bss_lock);
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@ -4067,33 +4056,36 @@ ieee80211_sta_scan_result(struct net_device *dev,
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if (bss_mesh_cfg(bss)) {
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char *buf;
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struct bss_mesh_config *cfg = bss_mesh_cfg(bss);
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u8 *cfg = bss_mesh_cfg(bss);
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buf = kmalloc(50, GFP_ATOMIC);
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if (buf) {
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memset(&iwe, 0, sizeof(iwe));
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iwe.cmd = IWEVCUSTOM;
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sprintf(buf, "Mesh network (version %d)",
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cfg->mesh_version);
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sprintf(buf, "Mesh network (version %d)", cfg[0]);
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iwe.u.data.length = strlen(buf);
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current_ev = iwe_stream_add_point(current_ev, end_buf,
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&iwe, buf);
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sprintf(buf, "Path Selection Protocol ID: "
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"0x%08X", cfg->path_proto_id);
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"0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3],
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cfg[4]);
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iwe.u.data.length = strlen(buf);
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current_ev = iwe_stream_add_point(current_ev, end_buf,
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&iwe, buf);
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sprintf(buf, "Path Selection Metric ID: "
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"0x%08X", cfg->path_metric_id);
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"0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7],
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cfg[8]);
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iwe.u.data.length = strlen(buf);
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current_ev = iwe_stream_add_point(current_ev, end_buf,
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&iwe, buf);
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sprintf(buf, "Congestion Control Mode ID: "
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"0x%08X", cfg->cong_control_id);
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"0x%02X%02X%02X%02X", cfg[9], cfg[10],
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cfg[11], cfg[12]);
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iwe.u.data.length = strlen(buf);
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current_ev = iwe_stream_add_point(current_ev, end_buf,
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&iwe, buf);
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sprintf(buf, "Channel Precedence: "
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"0x%08X", cfg->channel_precedence);
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"0x%02X%02X%02X%02X", cfg[13], cfg[14],
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cfg[15], cfg[16]);
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iwe.u.data.length = strlen(buf);
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current_ev = iwe_stream_add_point(current_ev, end_buf,
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&iwe, buf);
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@ -11,6 +11,10 @@
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#include "ieee80211_i.h"
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#include "mesh.h"
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#define PP_OFFSET 1 /* Path Selection Protocol */
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#define PM_OFFSET 5 /* Path Selection Metric */
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#define CC_OFFSET 9 /* Congestion Control Mode */
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#define CAPAB_OFFSET 17
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#define ACCEPT_PLINKS 0x80
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int mesh_allocated;
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@ -157,16 +157,6 @@ struct mesh_rmc {
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*/
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#define MESH_CFG_CMP_LEN 17
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/*
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* Components offset within the mesh configuration IE
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*/
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#define PP_OFFSET 1 /* Path Selection Protocol */
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#define PM_OFFSET 5 /* Path Selection Metric */
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#define CC_OFFSET 9 /* Congestion Control Mode */
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#define CP_OFFSET 13 /* Channel Precedence */
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#define CAPAB_OFFSET 17 /* Mesh Capabilities */
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/* Default values, timeouts in ms */
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#define MESH_TTL 5
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#define MESH_MAX_RETR 3
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