From 247367016305637fb981db020679520e354c80c4 Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Tue, 8 Apr 2008 14:15:46 -0400 Subject: [PATCH] Revert "mac80211: use a struct for bss->mesh_config" This reverts commit 6c4711b4697d93424e4b1f76a9929ba844d714a5. 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 --- net/mac80211/ieee80211_i.h | 13 ++----------- net/mac80211/ieee80211_sta.c | 32 ++++++++++++-------------------- net/mac80211/mesh.c | 4 ++++ net/mac80211/mesh.h | 10 ---------- 4 files changed, 18 insertions(+), 41 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 6c62dd42f9..0997a0f962 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -69,14 +69,6 @@ struct ieee80211_fragment_entry { u8 last_pn[6]; /* PN of the last fragment if CCMP was used */ }; -struct bss_mesh_config { - u32 path_proto_id; - u32 path_metric_id; - u32 cong_control_id; - u32 channel_precedence; - u8 mesh_version; -}; - struct ieee80211_sta_bss { struct list_head list; @@ -102,7 +94,7 @@ struct ieee80211_sta_bss { #ifdef CONFIG_MAC80211_MESH u8 *mesh_id; size_t mesh_id_len; - struct bss_mesh_config *mesh_cfg; + u8 *mesh_cfg; #endif #define IEEE80211_MAX_SUPP_RATES 32 u8 supp_rates[IEEE80211_MAX_SUPP_RATES]; @@ -121,8 +113,7 @@ struct ieee80211_sta_bss { u8 erp_value; }; -static inline -struct bss_mesh_config *bss_mesh_cfg(struct ieee80211_sta_bss *bss) +static inline u8 *bss_mesh_cfg(struct ieee80211_sta_bss *bss) { #ifdef CONFIG_MAC80211_MESH return bss->mesh_cfg; diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c index c20ef89aca..1ee07f0b02 100644 --- a/net/mac80211/ieee80211_sta.c +++ b/net/mac80211/ieee80211_sta.c @@ -27,7 +27,6 @@ #include #include #include -#include #include #include "ieee80211_i.h" @@ -2123,11 +2122,6 @@ ieee80211_rx_bss_get(struct net_device *dev, u8 *bssid, int freq, } #ifdef CONFIG_MAC80211_MESH -static inline u32 bss_mesh_cfg_get(u8 *mesh_cfg, u8 offset) -{ - return be32_to_cpu(get_unaligned((__be32 *) (mesh_cfg + offset))); -} - static struct ieee80211_sta_bss * ieee80211_rx_mesh_bss_get(struct net_device *dev, u8 *mesh_id, int mesh_id_len, u8 *mesh_cfg, int freq) @@ -2167,7 +2161,7 @@ ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, if (!bss) return NULL; - bss->mesh_cfg = kmalloc(sizeof(struct bss_mesh_config), GFP_ATOMIC); + bss->mesh_cfg = kmalloc(MESH_CFG_CMP_LEN, GFP_ATOMIC); if (!bss->mesh_cfg) { kfree(bss); return NULL; @@ -2185,12 +2179,7 @@ ieee80211_rx_mesh_bss_add(struct net_device *dev, u8 *mesh_id, int mesh_id_len, atomic_inc(&bss->users); atomic_inc(&bss->users); - bss->mesh_cfg->mesh_version = mesh_cfg[0]; - bss->mesh_cfg->path_proto_id = bss_mesh_cfg_get(mesh_cfg, PP_OFFSET); - bss->mesh_cfg->path_metric_id = bss_mesh_cfg_get(mesh_cfg, PM_OFFSET); - bss->mesh_cfg->cong_control_id = bss_mesh_cfg_get(mesh_cfg, CC_OFFSET); - bss->mesh_cfg->channel_precedence = bss_mesh_cfg_get(mesh_cfg, - CP_OFFSET); + memcpy(bss->mesh_cfg, mesh_cfg, MESH_CFG_CMP_LEN); bss->mesh_id_len = mesh_id_len; bss->freq = freq; spin_lock_bh(&local->sta_bss_lock); @@ -4067,33 +4056,36 @@ ieee80211_sta_scan_result(struct net_device *dev, if (bss_mesh_cfg(bss)) { char *buf; - struct bss_mesh_config *cfg = bss_mesh_cfg(bss); + u8 *cfg = bss_mesh_cfg(bss); buf = kmalloc(50, GFP_ATOMIC); if (buf) { memset(&iwe, 0, sizeof(iwe)); iwe.cmd = IWEVCUSTOM; - sprintf(buf, "Mesh network (version %d)", - cfg->mesh_version); + sprintf(buf, "Mesh network (version %d)", cfg[0]); iwe.u.data.length = strlen(buf); current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf); sprintf(buf, "Path Selection Protocol ID: " - "0x%08X", cfg->path_proto_id); + "0x%02X%02X%02X%02X", cfg[1], cfg[2], cfg[3], + cfg[4]); iwe.u.data.length = strlen(buf); current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf); sprintf(buf, "Path Selection Metric ID: " - "0x%08X", cfg->path_metric_id); + "0x%02X%02X%02X%02X", cfg[5], cfg[6], cfg[7], + cfg[8]); iwe.u.data.length = strlen(buf); current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf); sprintf(buf, "Congestion Control Mode ID: " - "0x%08X", cfg->cong_control_id); + "0x%02X%02X%02X%02X", cfg[9], cfg[10], + cfg[11], cfg[12]); iwe.u.data.length = strlen(buf); current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf); sprintf(buf, "Channel Precedence: " - "0x%08X", cfg->channel_precedence); + "0x%02X%02X%02X%02X", cfg[13], cfg[14], + cfg[15], cfg[16]); iwe.u.data.length = strlen(buf); current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, buf); diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c index b10f1e543a..594a3356a5 100644 --- a/net/mac80211/mesh.c +++ b/net/mac80211/mesh.c @@ -11,6 +11,10 @@ #include "ieee80211_i.h" #include "mesh.h" +#define PP_OFFSET 1 /* Path Selection Protocol */ +#define PM_OFFSET 5 /* Path Selection Metric */ +#define CC_OFFSET 9 /* Congestion Control Mode */ +#define CAPAB_OFFSET 17 #define ACCEPT_PLINKS 0x80 int mesh_allocated; diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h index 8ff46ea0f1..742003d3a8 100644 --- a/net/mac80211/mesh.h +++ b/net/mac80211/mesh.h @@ -157,16 +157,6 @@ struct mesh_rmc { */ #define MESH_CFG_CMP_LEN 17 -/* - * Components offset within the mesh configuration IE - */ -#define PP_OFFSET 1 /* Path Selection Protocol */ -#define PM_OFFSET 5 /* Path Selection Metric */ -#define CC_OFFSET 9 /* Congestion Control Mode */ -#define CP_OFFSET 13 /* Channel Precedence */ -#define CAPAB_OFFSET 17 /* Mesh Capabilities */ - - /* Default values, timeouts in ms */ #define MESH_TTL 5 #define MESH_MAX_RETR 3 -- 2.39.5