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mac80211: replace "destination" with "target" to follow the spec

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Resulting object files have the same MD5 as before.

Signed-off-by: Rui Paulo <rpaulo@gmail.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Reviewed-by: Andrey Yurovsky <andrey@cozybit.com>
Tested-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rui Paulo 2009-11-09 23:46:55 +00:00 committed by John W. Linville
parent be125c60e4
commit d19b3bf638
9 changed files with 144 additions and 141 deletions
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8
include/linux/nl80211.h
View file

@ -899,14 +899,14 @@ enum nl80211_sta_info {
*
* @NL80211_MPATH_FLAG_ACTIVE: the mesh path is active
* @NL80211_MPATH_FLAG_RESOLVING: the mesh path discovery process is running
* @NL80211_MPATH_FLAG_DSN_VALID: the mesh path contains a valid DSN
* @NL80211_MPATH_FLAG_SN_VALID: the mesh path contains a valid SN
* @NL80211_MPATH_FLAG_FIXED: the mesh path has been manually set
* @NL80211_MPATH_FLAG_RESOLVED: the mesh path discovery process succeeded
*/
enum nl80211_mpath_flags {
NL80211_MPATH_FLAG_ACTIVE = 1<<0,
NL80211_MPATH_FLAG_RESOLVING = 1<<1,
NL80211_MPATH_FLAG_DSN_VALID = 1<<2,
NL80211_MPATH_FLAG_SN_VALID = 1<<2,
NL80211_MPATH_FLAG_FIXED = 1<<3,
NL80211_MPATH_FLAG_RESOLVED = 1<<4,
};
@ -919,7 +919,7 @@ enum nl80211_mpath_flags {
*
* @__NL80211_MPATH_INFO_INVALID: attribute number 0 is reserved
* @NL80211_ATTR_MPATH_FRAME_QLEN: number of queued frames for this destination
* @NL80211_ATTR_MPATH_DSN: destination sequence number
* @NL80211_ATTR_MPATH_SN: destination sequence number
* @NL80211_ATTR_MPATH_METRIC: metric (cost) of this mesh path
* @NL80211_ATTR_MPATH_EXPTIME: expiration time for the path, in msec from now
* @NL80211_ATTR_MPATH_FLAGS: mesh path flags, enumerated in
@ -930,7 +930,7 @@ enum nl80211_mpath_flags {
enum nl80211_mpath_info {
__NL80211_MPATH_INFO_INVALID,
NL80211_MPATH_INFO_FRAME_QLEN,
NL80211_MPATH_INFO_DSN,
NL80211_MPATH_INFO_SN,
NL80211_MPATH_INFO_METRIC,
NL80211_MPATH_INFO_EXPTIME,
NL80211_MPATH_INFO_FLAGS,

8
include/net/cfg80211.h
View file

@ -420,7 +420,7 @@ enum monitor_flags {
* in during get_station() or dump_station().
*
* MPATH_INFO_FRAME_QLEN: @frame_qlen filled
* MPATH_INFO_DSN: @dsn filled
* MPATH_INFO_SN: @sn filled
* MPATH_INFO_METRIC: @metric filled
* MPATH_INFO_EXPTIME: @exptime filled
* MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled
@ -429,7 +429,7 @@ enum monitor_flags {
*/
enum mpath_info_flags {
MPATH_INFO_FRAME_QLEN = BIT(0),
MPATH_INFO_DSN = BIT(1),
MPATH_INFO_SN = BIT(1),
MPATH_INFO_METRIC = BIT(2),
MPATH_INFO_EXPTIME = BIT(3),
MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4),
@ -444,7 +444,7 @@ enum mpath_info_flags {
*
* @filled: bitfield of flags from &enum mpath_info_flags
* @frame_qlen: number of queued frames for this destination
* @dsn: destination sequence number
* @sn: target sequence number
* @metric: metric (cost) of this mesh path
* @exptime: expiration time for the mesh path from now, in msecs
* @flags: mesh path flags
@ -458,7 +458,7 @@ enum mpath_info_flags {
struct mpath_info {
u32 filled;
u32 frame_qlen;
u32 dsn;
u32 sn;
u32 metric;
u32 exptime;
u32 discovery_timeout;

8
net/mac80211/cfg.c
View file

@ -935,7 +935,7 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
pinfo->generation = mesh_paths_generation;
pinfo->filled = MPATH_INFO_FRAME_QLEN |
MPATH_INFO_DSN |
MPATH_INFO_SN |
MPATH_INFO_METRIC |
MPATH_INFO_EXPTIME |
MPATH_INFO_DISCOVERY_TIMEOUT |
@ -943,7 +943,7 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
MPATH_INFO_FLAGS;
pinfo->frame_qlen = mpath->frame_queue.qlen;
pinfo->dsn = mpath->dsn;
pinfo->sn = mpath->sn;
pinfo->metric = mpath->metric;
if (time_before(jiffies, mpath->exp_time))
pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
@ -955,8 +955,8 @@ static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
if (mpath->flags & MESH_PATH_RESOLVING)
pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
if (mpath->flags & MESH_PATH_DSN_VALID)
pinfo->flags |= NL80211_MPATH_FLAG_DSN_VALID;
if (mpath->flags & MESH_PATH_SN_VALID)
pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
if (mpath->flags & MESH_PATH_FIXED)
pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
if (mpath->flags & MESH_PATH_RESOLVING)

10
net/mac80211/ieee80211_i.h
View file

@ -373,14 +373,14 @@ struct ieee80211_if_mesh {
u8 mesh_sp_id;
/* Authentication Protocol Identifier */
u8 mesh_auth_id;
/* Local mesh Destination Sequence Number */
u32 dsn;
/* Local mesh Sequence Number */
u32 sn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last DSN update */
unsigned long last_dsn_update;
/* Timestamp of last DSN sent */
/* Timestamp of last SN update */
unsigned long last_sn_update;
/* Timestamp of last SN sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;

2
net/mac80211/mesh.c
View file

@ -672,7 +672,7 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
MESH_MIN_DISCOVERY_TIMEOUT;
ifmsh->accepting_plinks = true;
ifmsh->preq_id = 0;
ifmsh->dsn = 0;
ifmsh->sn = 0;
atomic_set(&ifmsh->mpaths, 0);
mesh_rmc_init(sdata);
ifmsh->last_preq = jiffies;

10
net/mac80211/mesh.h
View file

@ -26,7 +26,7 @@
*
* @MESH_PATH_ACTIVE: the mesh path can be used for forwarding
* @MESH_PATH_RESOLVING: the discovery process is running for this mesh path
* @MESH_PATH_DSN_VALID: the mesh path contains a valid destination sequence
* @MESH_PATH_SN_VALID: the mesh path contains a valid destination sequence
* number
* @MESH_PATH_FIXED: the mesh path has been manually set and should not be
* modified
@ -38,7 +38,7 @@
enum mesh_path_flags {
MESH_PATH_ACTIVE = BIT(0),
MESH_PATH_RESOLVING = BIT(1),
MESH_PATH_DSN_VALID = BIT(2),
MESH_PATH_SN_VALID = BIT(2),
MESH_PATH_FIXED = BIT(3),
MESH_PATH_RESOLVED = BIT(4),
};
@ -70,7 +70,7 @@ enum mesh_deferred_task_flags {
* @timer: mesh path discovery timer
* @frame_queue: pending queue for frames sent to this destination while the
* path is unresolved
* @dsn: destination sequence number of the destination
* @sn: target sequence number
* @metric: current metric to this destination
* @hop_count: hops to destination
* @exp_time: in jiffies, when the path will expire or when it expired
@ -94,7 +94,7 @@ struct mesh_path {
struct timer_list timer;
struct sk_buff_head frame_queue;
struct rcu_head rcu;
u32 dsn;
u32 sn;
u32 metric;
u8 hop_count;
unsigned long exp_time;
@ -280,7 +280,7 @@ void mesh_mpp_table_grow(void);
u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata,
struct mesh_table *tbl);
/* Mesh paths */
int mesh_path_error_tx(u8 ttl, u8 *dest, __le32 dest_dsn, __le16 dest_rcode,
int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn, __le16 target_rcode,
u8 *ra, struct ieee80211_sub_if_data *sdata);
void mesh_path_assign_nexthop(struct mesh_path *mpath, struct sta_info *sta);
void mesh_path_flush_pending(struct mesh_path *mpath);

221
net/mac80211/mesh_hwmp.c
View file

@ -56,33 +56,33 @@ static inline u32 u16_field_get(u8 *preq_elem, int offset, bool ae)
#define PREQ_IE_TTL(x) (*(x + 2))
#define PREQ_IE_PREQ_ID(x) u32_field_get(x, 3, 0)
#define PREQ_IE_ORIG_ADDR(x) (x + 7)
#define PREQ_IE_ORIG_DSN(x) u32_field_get(x, 13, 0);
#define PREQ_IE_ORIG_SN(x) u32_field_get(x, 13, 0);
#define PREQ_IE_LIFETIME(x) u32_field_get(x, 17, AE_F_SET(x));
#define PREQ_IE_METRIC(x) u32_field_get(x, 21, AE_F_SET(x));
#define PREQ_IE_DST_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26))
#define PREQ_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27)
#define PREQ_IE_DST_DSN(x) u32_field_get(x, 33, AE_F_SET(x));
#define PREQ_IE_TARGET_F(x) (*(AE_F_SET(x) ? x + 32 : x + 26))
#define PREQ_IE_TARGET_ADDR(x) (AE_F_SET(x) ? x + 33 : x + 27)
#define PREQ_IE_TARGET_SN(x) u32_field_get(x, 33, AE_F_SET(x));
#define PREP_IE_FLAGS(x) PREQ_IE_FLAGS(x)
#define PREP_IE_HOPCOUNT(x) PREQ_IE_HOPCOUNT(x)
#define PREP_IE_TTL(x) PREQ_IE_TTL(x)
#define PREP_IE_ORIG_ADDR(x) (x + 3)
#define PREP_IE_ORIG_DSN(x) u32_field_get(x, 9, 0);
#define PREP_IE_ORIG_SN(x) u32_field_get(x, 9, 0);
#define PREP_IE_LIFETIME(x) u32_field_get(x, 13, AE_F_SET(x));
#define PREP_IE_METRIC(x) u32_field_get(x, 17, AE_F_SET(x));
#define PREP_IE_DST_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
#define PREP_IE_DST_DSN(x) u32_field_get(x, 27, AE_F_SET(x));
#define PREP_IE_TARGET_ADDR(x) (AE_F_SET(x) ? x + 27 : x + 21)
#define PREP_IE_TARGET_SN(x) u32_field_get(x, 27, AE_F_SET(x));
#define PERR_IE_TTL(x) (*(x))
#define PERR_IE_DST_FLAGS(x) (*(x + 2))
#define PERR_IE_DST_ADDR(x) (x + 3)
#define PERR_IE_DST_DSN(x) u32_field_get(x, 9, 0);
#define PERR_IE_DST_RCODE(x) u16_field_get(x, 13, 0);
#define PERR_IE_TARGET_FLAGS(x) (*(x + 2))
#define PERR_IE_TARGET_ADDR(x) (x + 3)
#define PERR_IE_TARGET_SN(x) u32_field_get(x, 9, 0);
#define PERR_IE_TARGET_RCODE(x) u16_field_get(x, 13, 0);
#define MSEC_TO_TU(x) (x*1000/1024)
#define DSN_GT(x, y) ((long) (y) - (long) (x) < 0)
#define DSN_LT(x, y) ((long) (x) - (long) (y) < 0)
#define SN_GT(x, y) ((long) (y) - (long) (x) < 0)
#define SN_LT(x, y) ((long) (x) - (long) (y) < 0)
#define net_traversal_jiffies(s) \
msecs_to_jiffies(s->u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime)
@ -102,9 +102,10 @@ enum mpath_frame_type {
};
static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
u8 *orig_addr, __le32 orig_dsn, u8 dst_flags, u8 *dst,
__le32 dst_dsn, u8 *da, u8 hop_count, u8 ttl, __le32 lifetime,
__le32 metric, __le32 preq_id, struct ieee80211_sub_if_data *sdata)
u8 *orig_addr, __le32 orig_sn, u8 target_flags, u8 *target,
__le32 target_sn, u8 *da, u8 hop_count, u8 ttl,__le32 lifetime,
__le32 metric, __le32 preq_id,
struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
@ -133,13 +134,13 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
switch (action) {
case MPATH_PREQ:
mhwmp_dbg("sending PREQ to %pM\n", dst);
mhwmp_dbg("sending PREQ to %pM\n", target);
ie_len = 37;
pos = skb_put(skb, 2 + ie_len);
*pos++ = WLAN_EID_PREQ;
break;
case MPATH_PREP:
mhwmp_dbg("sending PREP to %pM\n", dst);
mhwmp_dbg("sending PREP to %pM\n", target);
ie_len = 31;
pos = skb_put(skb, 2 + ie_len);
*pos++ = WLAN_EID_PREP;
@ -165,7 +166,7 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
}
memcpy(pos, orig_addr, ETH_ALEN);
pos += ETH_ALEN;
memcpy(pos, &orig_dsn, 4);
memcpy(pos, &orig_sn, 4);
pos += 4;
if (action != MPATH_RANN) {
memcpy(pos, &lifetime, 4);
@ -176,12 +177,12 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
if (action == MPATH_PREQ) {
/* destination count */
*pos++ = 1;
*pos++ = dst_flags;
*pos++ = target_flags;
}
if (action != MPATH_RANN) {
memcpy(pos, dst, ETH_ALEN);
memcpy(pos, target, ETH_ALEN);
pos += ETH_ALEN;
memcpy(pos, &dst_dsn, 4);
memcpy(pos, &target_sn, 4);
}
ieee80211_tx_skb(sdata, skb, 1);
@ -191,12 +192,14 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
/**
* mesh_send_path error - Sends a PERR mesh management frame
*
* @dst: broken destination
* @dst_dsn: dsn of the broken destination
* @target: broken destination
* @target_sn: SN of the broken destination
* @target_rcode: reason code for this PERR
* @ra: node this frame is addressed to
*/
int mesh_path_error_tx(u8 ttl, u8 *dst, __le32 dst_dsn, __le16 dst_rcode,
u8 *ra, struct ieee80211_sub_if_data *sdata)
int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
__le16 target_rcode, u8 *ra,
struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
@ -234,16 +237,16 @@ int mesh_path_error_tx(u8 ttl, u8 *dst, __le32 dst_dsn, __le16 dst_rcode,
* bit 2 is set if we have a reason code
*/
*pos = 0;
if (!dst_dsn)
if (!target_sn)
*pos |= MP_F_USN;
if (dst_rcode)
if (target_rcode)
*pos |= MP_F_RCODE;
pos++;
memcpy(pos, dst, ETH_ALEN);
memcpy(pos, target, ETH_ALEN);
pos += ETH_ALEN;
memcpy(pos, &dst_dsn, 4);
memcpy(pos, &target_sn, 4);
pos += 4;
memcpy(pos, &dst_rcode, 2);
memcpy(pos, &target_rcode, 2);
ieee80211_tx_skb(sdata, skb, 1);
return 0;
@ -324,7 +327,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
bool fresh_info;
u8 *orig_addr, *ta;
u32 orig_dsn, orig_metric;
u32 orig_sn, orig_metric;
unsigned long orig_lifetime, exp_time;
u32 last_hop_metric, new_metric;
bool process = true;
@ -343,7 +346,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
switch (action) {
case MPATH_PREQ:
orig_addr = PREQ_IE_ORIG_ADDR(hwmp_ie);
orig_dsn = PREQ_IE_ORIG_DSN(hwmp_ie);
orig_sn = PREQ_IE_ORIG_SN(hwmp_ie);
orig_lifetime = PREQ_IE_LIFETIME(hwmp_ie);
orig_metric = PREQ_IE_METRIC(hwmp_ie);
break;
@ -356,7 +359,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
* information from both PREQ and PREP frames.
*/
orig_addr = PREP_IE_ORIG_ADDR(hwmp_ie);
orig_dsn = PREP_IE_ORIG_DSN(hwmp_ie);
orig_sn = PREP_IE_ORIG_SN(hwmp_ie);
orig_lifetime = PREP_IE_LIFETIME(hwmp_ie);
orig_metric = PREP_IE_METRIC(hwmp_ie);
break;
@ -382,9 +385,9 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
if (mpath->flags & MESH_PATH_FIXED)
fresh_info = false;
else if ((mpath->flags & MESH_PATH_ACTIVE) &&
(mpath->flags & MESH_PATH_DSN_VALID)) {
if (DSN_GT(mpath->dsn, orig_dsn) ||
(mpath->dsn == orig_dsn &&
(mpath->flags & MESH_PATH_SN_VALID)) {
if (SN_GT(mpath->sn, orig_sn) ||
(mpath->sn == orig_sn &&
action == MPATH_PREQ &&
new_metric > mpath->metric)) {
process = false;
@ -403,9 +406,9 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
if (fresh_info) {
mesh_path_assign_nexthop(mpath, sta);
mpath->flags |= MESH_PATH_DSN_VALID;
mpath->flags |= MESH_PATH_SN_VALID;
mpath->metric = new_metric;
mpath->dsn = orig_dsn;
mpath->sn = orig_sn;
mpath->exp_time = time_after(mpath->exp_time, exp_time)
? mpath->exp_time : exp_time;
mesh_path_activate(mpath);
@ -444,7 +447,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
if (fresh_info) {
mesh_path_assign_nexthop(mpath, sta);
mpath->flags &= ~MESH_PATH_DSN_VALID;
mpath->flags &= ~MESH_PATH_SN_VALID;
mpath->metric = last_hop_metric;
mpath->exp_time = time_after(mpath->exp_time, exp_time)
? mpath->exp_time : exp_time;
@ -466,47 +469,47 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_path *mpath;
u8 *dst_addr, *orig_addr;
u8 dst_flags, ttl;
u32 orig_dsn, dst_dsn, lifetime;
u8 *target_addr, *orig_addr;
u8 target_flags, ttl;
u32 orig_sn, target_sn, lifetime;
bool reply = false;
bool forward = true;
/* Update destination DSN, if present */
dst_addr = PREQ_IE_DST_ADDR(preq_elem);
/* Update target SN, if present */
target_addr = PREQ_IE_TARGET_ADDR(preq_elem);
orig_addr = PREQ_IE_ORIG_ADDR(preq_elem);
dst_dsn = PREQ_IE_DST_DSN(preq_elem);
orig_dsn = PREQ_IE_ORIG_DSN(preq_elem);
dst_flags = PREQ_IE_DST_F(preq_elem);
target_sn = PREQ_IE_TARGET_SN(preq_elem);
orig_sn = PREQ_IE_ORIG_SN(preq_elem);
target_flags = PREQ_IE_TARGET_F(preq_elem);
mhwmp_dbg("received PREQ from %pM\n", orig_addr);
if (memcmp(dst_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) {
if (memcmp(target_addr, sdata->dev->dev_addr, ETH_ALEN) == 0) {
mhwmp_dbg("PREQ is for us\n");
forward = false;
reply = true;
metric = 0;
if (time_after(jiffies, ifmsh->last_dsn_update +
if (time_after(jiffies, ifmsh->last_sn_update +
net_traversal_jiffies(sdata)) ||
time_before(jiffies, ifmsh->last_dsn_update)) {
dst_dsn = ++ifmsh->dsn;
ifmsh->last_dsn_update = jiffies;
time_before(jiffies, ifmsh->last_sn_update)) {
target_sn = ++ifmsh->sn;
ifmsh->last_sn_update = jiffies;
}
} else {
rcu_read_lock();
mpath = mesh_path_lookup(dst_addr, sdata);
mpath = mesh_path_lookup(target_addr, sdata);
if (mpath) {
if ((!(mpath->flags & MESH_PATH_DSN_VALID)) ||
DSN_LT(mpath->dsn, dst_dsn)) {
mpath->dsn = dst_dsn;
mpath->flags |= MESH_PATH_DSN_VALID;
} else if ((!(dst_flags & MP_F_DO)) &&
if ((!(mpath->flags & MESH_PATH_SN_VALID)) ||
SN_LT(mpath->sn, target_sn)) {
mpath->sn = target_sn;
mpath->flags |= MESH_PATH_SN_VALID;
} else if ((!(target_flags & MP_F_DO)) &&
(mpath->flags & MESH_PATH_ACTIVE)) {
reply = true;
metric = mpath->metric;
dst_dsn = mpath->dsn;
if (dst_flags & MP_F_RF)
dst_flags |= MP_F_DO;
target_sn = mpath->sn;
if (target_flags & MP_F_RF)
target_flags |= MP_F_DO;
else
forward = false;
}
@ -519,9 +522,9 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
ttl = ifmsh->mshcfg.dot11MeshTTL;
if (ttl != 0) {
mhwmp_dbg("replying to the PREQ\n");
mesh_path_sel_frame_tx(MPATH_PREP, 0, dst_addr,
cpu_to_le32(dst_dsn), 0, orig_addr,
cpu_to_le32(orig_dsn), mgmt->sa, 0, ttl,
mesh_path_sel_frame_tx(MPATH_PREP, 0, target_addr,
cpu_to_le32(target_sn), 0, orig_addr,
cpu_to_le32(orig_sn), mgmt->sa, 0, ttl,
cpu_to_le32(lifetime), cpu_to_le32(metric),
0, sdata);
} else
@ -544,8 +547,8 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
preq_id = PREQ_IE_PREQ_ID(preq_elem);
hopcount = PREQ_IE_HOPCOUNT(preq_elem) + 1;
mesh_path_sel_frame_tx(MPATH_PREQ, flags, orig_addr,
cpu_to_le32(orig_dsn), dst_flags, dst_addr,
cpu_to_le32(dst_dsn), sdata->dev->broadcast,
cpu_to_le32(orig_sn), target_flags, target_addr,
cpu_to_le32(target_sn), sdata->dev->broadcast,
hopcount, ttl, cpu_to_le32(lifetime),
cpu_to_le32(metric), cpu_to_le32(preq_id),
sdata);
@ -560,10 +563,10 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
u8 *prep_elem, u32 metric)
{
struct mesh_path *mpath;
u8 *dst_addr, *orig_addr;
u8 *target_addr, *orig_addr;
u8 ttl, hopcount, flags;
u8 next_hop[ETH_ALEN];
u32 dst_dsn, orig_dsn, lifetime;
u32 target_sn, orig_sn, lifetime;
mhwmp_dbg("received PREP from %pM\n", PREP_IE_ORIG_ADDR(prep_elem));
@ -573,8 +576,8 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
* which corresponds with the originator of the PREQ which this PREP
* replies
*/
dst_addr = PREP_IE_DST_ADDR(prep_elem);
if (memcmp(dst_addr, sdata->dev->dev_addr, ETH_ALEN) == 0)
target_addr = PREP_IE_TARGET_ADDR(prep_elem);
if (memcmp(target_addr, sdata->dev->dev_addr, ETH_ALEN) == 0)
/* destination, no forwarding required */
return;
@ -585,7 +588,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
}
rcu_read_lock();
mpath = mesh_path_lookup(dst_addr, sdata);
mpath = mesh_path_lookup(target_addr, sdata);
if (mpath)
spin_lock_bh(&mpath->state_lock);
else
@ -601,13 +604,13 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
lifetime = PREP_IE_LIFETIME(prep_elem);
hopcount = PREP_IE_HOPCOUNT(prep_elem) + 1;
orig_addr = PREP_IE_ORIG_ADDR(prep_elem);
dst_dsn = PREP_IE_DST_DSN(prep_elem);
orig_dsn = PREP_IE_ORIG_DSN(prep_elem);
target_sn = PREP_IE_TARGET_SN(prep_elem);
orig_sn = PREP_IE_ORIG_SN(prep_elem);
mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr,
cpu_to_le32(orig_dsn), 0, dst_addr,
cpu_to_le32(dst_dsn), mpath->next_hop->sta.addr, hopcount, ttl,
cpu_to_le32(lifetime), cpu_to_le32(metric),
cpu_to_le32(orig_sn), 0, target_addr,
cpu_to_le32(target_sn), mpath->next_hop->sta.addr, hopcount,
ttl, cpu_to_le32(lifetime), cpu_to_le32(metric),
0, sdata);
rcu_read_unlock();
@ -627,10 +630,10 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_path *mpath;
u8 ttl;
u8 *ta, *dst_addr;
u8 dst_flags;
u32 dst_dsn;
u16 dst_rcode;
u8 *ta, *target_addr;
u8 target_flags;
u32 target_sn;
u16 target_rcode;
ta = mgmt->sa;
ttl = PERR_IE_TTL(perr_elem);
@ -639,24 +642,24 @@ static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,
return;
}
ttl--;
dst_flags = PERR_IE_DST_FLAGS(perr_elem);
dst_addr = PERR_IE_DST_ADDR(perr_elem);
dst_dsn = PERR_IE_DST_DSN(perr_elem);
dst_rcode = PERR_IE_DST_RCODE(perr_elem);
target_flags = PERR_IE_TARGET_FLAGS(perr_elem);
target_addr = PERR_IE_TARGET_ADDR(perr_elem);
target_sn = PERR_IE_TARGET_SN(perr_elem);
target_rcode = PERR_IE_TARGET_RCODE(perr_elem);
rcu_read_lock();
mpath = mesh_path_lookup(dst_addr, sdata);
mpath = mesh_path_lookup(target_addr, sdata);
if (mpath) {
spin_lock_bh(&mpath->state_lock);
if (mpath->flags & MESH_PATH_ACTIVE &&
memcmp(ta, mpath->next_hop->sta.addr, ETH_ALEN) == 0 &&
(!(mpath->flags & MESH_PATH_DSN_VALID) ||
DSN_GT(dst_dsn, mpath->dsn))) {
(!(mpath->flags & MESH_PATH_SN_VALID) ||
SN_GT(target_sn, mpath->sn))) {
mpath->flags &= ~MESH_PATH_ACTIVE;
mpath->dsn = dst_dsn;
mpath->sn = target_sn;
spin_unlock_bh(&mpath->state_lock);
mesh_path_error_tx(ttl, dst_addr, cpu_to_le32(dst_dsn),
cpu_to_le16(dst_rcode),
mesh_path_error_tx(ttl, target_addr, cpu_to_le32(target_sn),
cpu_to_le16(target_rcode),
sdata->dev->broadcast, sdata);
} else
spin_unlock_bh(&mpath->state_lock);
@ -673,7 +676,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
u8 *ta;
u8 ttl, flags, hopcount;
u8 *orig_addr;
u32 orig_dsn, metric;
u32 orig_sn, metric;
ta = mgmt->sa;
ttl = rann->rann_ttl;
@ -684,7 +687,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
ttl--;
flags = rann->rann_flags;
orig_addr = rann->rann_addr;
orig_dsn = rann->rann_seq;
orig_sn = rann->rann_seq;
hopcount = rann->rann_hopcount;
hopcount++;
metric = rann->rann_metric;
@ -703,14 +706,14 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
mesh_queue_preq(mpath,
PREQ_Q_F_START | PREQ_Q_F_REFRESH);
}
if (mpath->dsn < orig_dsn) {
if (mpath->sn < orig_sn) {
mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
cpu_to_le32(orig_dsn),
cpu_to_le32(orig_sn),
0, NULL, 0, sdata->dev->broadcast,
hopcount, ttl, 0,
cpu_to_le32(metric + mpath->metric),
0, sdata);
mpath->dsn = orig_dsn;
mpath->sn = orig_sn;
}
rcu_read_unlock();
}
@ -823,7 +826,7 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_preq_queue *preq_node;
struct mesh_path *mpath;
u8 ttl, dst_flags;
u8 ttl, target_flags;
u32 lifetime;
spin_lock_bh(&ifmsh->mesh_preq_queue_lock);
@ -865,11 +868,11 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
ifmsh->last_preq = jiffies;
if (time_after(jiffies, ifmsh->last_dsn_update +
if (time_after(jiffies, ifmsh->last_sn_update +
net_traversal_jiffies(sdata)) ||
time_before(jiffies, ifmsh->last_dsn_update)) {
++ifmsh->dsn;
sdata->u.mesh.last_dsn_update = jiffies;
time_before(jiffies, ifmsh->last_sn_update)) {
++ifmsh->sn;
sdata->u.mesh.last_sn_update = jiffies;
}
lifetime = default_lifetime(sdata);
ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
@ -880,14 +883,14 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
}
if (preq_node->flags & PREQ_Q_F_REFRESH)
dst_flags = MP_F_DO;
target_flags = MP_F_DO;
else
dst_flags = MP_F_RF;
target_flags = MP_F_RF;
spin_unlock_bh(&mpath->state_lock);
mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->dev->dev_addr,
cpu_to_le32(ifmsh->dsn), dst_flags, mpath->dst,
cpu_to_le32(mpath->dsn), sdata->dev->broadcast, 0,
cpu_to_le32(ifmsh->sn), target_flags, mpath->dst,
cpu_to_le32(mpath->sn), sdata->dev->broadcast, 0,
ttl, cpu_to_le32(lifetime), 0,
cpu_to_le32(ifmsh->preq_id++), sdata);
mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
@ -914,15 +917,15 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
struct sk_buff *skb_to_free = NULL;
struct mesh_path *mpath;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
u8 *dst_addr = hdr->addr3;
u8 *target_addr = hdr->addr3;
int err = 0;
rcu_read_lock();
mpath = mesh_path_lookup(dst_addr, sdata);
mpath = mesh_path_lookup(target_addr, sdata);
if (!mpath) {
mesh_path_add(dst_addr, sdata);
mpath = mesh_path_lookup(dst_addr, sdata);
mesh_path_add(target_addr, sdata);
mpath = mesh_path_lookup(target_addr, sdata);
if (!mpath) {
sdata->u.mesh.mshstats.dropped_frames_no_route++;
err = -ENOSPC;

12
net/mac80211/mesh_pathtbl.c
View file

@ -463,10 +463,10 @@ void mesh_plink_broken(struct sta_info *sta)
mpath->flags & MESH_PATH_ACTIVE &&
!(mpath->flags & MESH_PATH_FIXED)) {
mpath->flags &= ~MESH_PATH_ACTIVE;
++mpath->dsn;
++mpath->sn;
spin_unlock_bh(&mpath->state_lock);
mesh_path_error_tx(MESH_TTL, mpath->dst,
cpu_to_le32(mpath->dsn),
cpu_to_le32(mpath->sn),
PERR_RCODE_DEST_UNREACH,
sdata->dev->broadcast, sdata);
} else
@ -602,7 +602,7 @@ void mesh_path_discard_frame(struct sk_buff *skb,
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct mesh_path *mpath;
u32 dsn = 0;
u32 sn = 0;
if (memcmp(hdr->addr4, sdata->dev->dev_addr, ETH_ALEN) != 0) {
u8 *ra, *da;
@ -611,8 +611,8 @@ void mesh_path_discard_frame(struct sk_buff *skb,
ra = hdr->addr1;
mpath = mesh_path_lookup(da, sdata);
if (mpath)
dsn = ++mpath->dsn;
mesh_path_error_tx(MESH_TTL, skb->data, cpu_to_le32(dsn),
sn = ++mpath->sn;
mesh_path_error_tx(MESH_TTL, skb->data, cpu_to_le32(sn),
PERR_RCODE_NO_ROUTE, ra, sdata);
}
@ -648,7 +648,7 @@ void mesh_path_fix_nexthop(struct mesh_path *mpath, struct sta_info *next_hop)
{
spin_lock_bh(&mpath->state_lock);
mesh_path_assign_nexthop(mpath, next_hop);
mpath->dsn = 0xffff;
mpath->sn = 0xffff;
mpath->metric = 0;
mpath->hop_count = 0;
mpath->exp_time = 0;

6
net/wireless/nl80211.c
View file

@ -2116,9 +2116,9 @@ static int nl80211_send_mpath(struct sk_buff *msg, u32 pid, u32 seq,
if (pinfo->filled & MPATH_INFO_FRAME_QLEN)
NLA_PUT_U32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
pinfo->frame_qlen);
if (pinfo->filled & MPATH_INFO_DSN)
NLA_PUT_U32(msg, NL80211_MPATH_INFO_DSN,
pinfo->dsn);
if (pinfo->filled & MPATH_INFO_SN)
NLA_PUT_U32(msg, NL80211_MPATH_INFO_SN,
pinfo->sn);
if (pinfo->filled & MPATH_INFO_METRIC)
NLA_PUT_U32(msg, NL80211_MPATH_INFO_METRIC,
pinfo->metric);