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iw: add VHT80 support for 802.11s 

Support next to the non-HT/HT channel widths like HT20 or NOHT also VHT80
channels during the mesh join

    iw dev mesh0 mesh join "meshnet" freq 5180 80MHz

Signed-off-by: Sven Eckelmann <sven@open-mesh.com>

SVN-Revision: 47782
This commit is contained in:
Felix Fietkau 2015-12-05 09:52:18 +00:00
parent 028666e75f
commit cbb1227c4c
1 changed files with 170 additions and 0 deletions
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170
package/network/utils/iw/patches/303-mesh_add_VHT80.patch Normal file
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@ -0,0 +1,170 @@
From: Sven Eckelmann <sven@open-mesh.com>
Date: Tue, 24 Nov 2015 17:55:22 +0100
Subject: iw: add VHT80 support for 802.11s
Support next to the non-HT/HT channel widths like HT20 or NOHT also VHT80
channels during the mesh join
iw dev mesh0 mesh join "meshnet" freq 5180 80MHz
Signed-off-by: Sven Eckelmann <sven@open-mesh.com>
---
ibss.c | 33 ---------------------------------
iw.h | 9 +++++++++
mesh.c | 16 ++++++++--------
util.c | 26 ++++++++++++++++++++++++++
4 files changed, 43 insertions(+), 41 deletions(-)
diff --git a/ibss.c b/ibss.c
index 23bda70..ac06fc5 100644
--- a/ibss.c
+++ b/ibss.c
@@ -16,39 +16,6 @@
SECTION(ibss);
-struct chanmode {
- const char *name;
- unsigned int width;
- int freq1_diff;
- int chantype; /* for older kernel */
-};
-
-static int get_cf1(const struct chanmode *chanmode, unsigned long freq)
-{
- int cf1 = freq, j;
- int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
-
- switch (chanmode->width) {
- case NL80211_CHAN_WIDTH_80:
- /* setup center_freq1 */
- for (j = 0; j < ARRAY_SIZE(vht80); j++) {
- if (freq >= vht80[j] && freq < vht80[j] + 80)
- break;
- }
-
- if (j == ARRAY_SIZE(vht80))
- break;
-
- cf1 = vht80[j] + 30;
- break;
- default:
- cf1 = freq + chanmode->freq1_diff;
- break;
- }
-
- return cf1;
-}
-
static int join_ibss(struct nl80211_state *state,
struct nl_msg *msg,
int argc, char **argv,
diff --git a/iw.h b/iw.h
index cef9da8..8e1a37a 100644
--- a/iw.h
+++ b/iw.h
@@ -59,6 +59,13 @@ struct cmd {
const struct cmd *parent;
};
+struct chanmode {
+ const char *name;
+ unsigned int width;
+ int freq1_diff;
+ int chantype; /* for older kernel */
+};
+
#define ARRAY_SIZE(ar) (sizeof(ar)/sizeof(ar[0]))
#define DIV_ROUND_UP(x, y) (((x) + (y - 1)) / (y))
@@ -174,6 +181,8 @@ void print_ies(unsigned char *ie, int ielen, bool unknown,
void parse_bitrate(struct nlattr *bitrate_attr, char *buf, int buflen);
void iw_hexdump(const char *prefix, const __u8 *data, size_t len);
+int get_cf1(const struct chanmode *chanmode, unsigned long freq);
+
#define SCHED_SCAN_OPTIONS "interval <in_msecs> [delay <in_secs>] " \
"[freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] [randomise[=<addr>/<mask>]]"
int parse_sched_scan(struct nl_msg *msg, int *argc, char ***argv);
diff --git a/mesh.c b/mesh.c
index 0090530..930d58f 100644
--- a/mesh.c
+++ b/mesh.c
@@ -439,12 +439,8 @@ static int join_mesh(struct nl80211_state *state,
int bintval, dtim_period, i, n_rates = 0;
char *end, *value = NULL, *sptr = NULL;
unsigned long freq = 0;
- static const struct {
- const char *name;
- unsigned int width;
- int freq1_diff;
- int chantype; /* for older kernel */
- } *chanmode_selected = NULL, chanmode[] = {
+ const struct chanmode *chanmode_selected = NULL;
+ static const struct chanmode chanmode[] = {
{ .name = "HT20",
.width = NL80211_CHAN_WIDTH_20,
.freq1_diff = 0,
@@ -461,6 +457,10 @@ static int join_mesh(struct nl80211_state *state,
.width = NL80211_CHAN_WIDTH_20_NOHT,
.freq1_diff = 0,
.chantype = NL80211_CHAN_NO_HT },
+ { .name = "80MHz",
+ .width = NL80211_CHAN_WIDTH_80,
+ .freq1_diff = 0,
+ .chantype = -1 },
};
if (argc < 1)
@@ -497,7 +497,7 @@ static int join_mesh(struct nl80211_state *state,
NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
chanmode_selected->width);
NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1,
- freq + chanmode_selected->freq1_diff);
+ get_cf1(chanmode_selected, freq));
if (chanmode_selected->chantype != -1)
NLA_PUT_U32(msg,
NL80211_ATTR_WIPHY_CHANNEL_TYPE,
@@ -599,7 +599,7 @@ static int join_mesh(struct nl80211_state *state,
nla_put_failure:
return -ENOBUFS;
}
-COMMAND(mesh, join, "<mesh ID> [[freq <freq in MHz> <HT20|HT40+|HT40-|NOHT>]"
+COMMAND(mesh, join, "<mesh ID> [[freq <freq in MHz> <HT20|HT40+|HT40-|NOHT|80MHz>]"
" [basic-rates <rate in Mbps,rate2,...>]], [mcast-rate <rate in Mbps>]"
" [beacon-interval <time in TUs>] [dtim-period <value>]"
" [vendor_sync on|off] [<param>=<value>]*",
diff --git a/util.c b/util.c
index 4efc4c8..d75ffe0 100644
--- a/util.c
+++ b/util.c
@@ -728,3 +728,29 @@ void iw_hexdump(const char *prefix, const __u8 *buf, size_t size)
}
printf("\n\n");
}
+
+int get_cf1(const struct chanmode *chanmode, unsigned long freq)
+{
+ int cf1 = freq, j;
+ int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
+
+ switch (chanmode->width) {
+ case NL80211_CHAN_WIDTH_80:
+ /* setup center_freq1 */
+ for (j = 0; j < ARRAY_SIZE(vht80); j++) {
+ if (freq >= vht80[j] && freq < vht80[j] + 80)
+ break;
+ }
+
+ if (j == ARRAY_SIZE(vht80))
+ break;
+
+ cf1 = vht80[j] + 30;
+ break;
+ default:
+ cf1 = freq + chanmode->freq1_diff;
+ break;
+ }
+
+ return cf1;
+}