Allow user to configure frequency and channel type during
mesh join command.
Signed-off-by: Ashok Nagarajan <ashok.dra...@gmail.com>
Signed-off-by: Chun-Yeow Yeoh <yeohchuny...@gmail.com>
v2: use chandef similar to IBSS
---
mesh.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 67 insertions(+), 3 deletions(-)
diff --git a/mesh.c b/mesh.c
index ca065bf..69c54cc 100644
--- a/mesh.c
+++ b/mesh.c
@@ -438,8 +438,32 @@ static int join_mesh(struct nl80211_state *state, struct
nl_cb *cb,
{
struct nlattr *container;
float rate;
- int bintval, dtim_period;
+ int bintval, dtim_period, i;
char *end;
+ 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[] = {
+ { .name = "HT20",
+ .width = NL80211_CHAN_WIDTH_20,
+ .freq1_diff = 0,
+ .chantype = NL80211_CHAN_HT20 },
+ { .name = "HT40+",
+ .width = NL80211_CHAN_WIDTH_40,
+ .freq1_diff = 10,
+ .chantype = NL80211_CHAN_HT40PLUS },
+ { .name = "HT40-",
+ .width = NL80211_CHAN_WIDTH_40,
+ .freq1_diff = -10,
+ .chantype = NL80211_CHAN_HT40MINUS },
+ { .name = "NOHT",
+ .width = NL80211_CHAN_WIDTH_20_NOHT,
+ .freq1_diff = 0,
+ .chantype = NL80211_CHAN_NO_HT },
+ };
if (argc < 1)
return 1;
@@ -448,6 +472,44 @@ static int join_mesh(struct nl80211_state *state, struct
nl_cb *cb,
argc--;
argv++;
+ /* freq */
+ if (argc > 1 && strcmp(argv[0], "freq") == 0) {
+ argv++;
+ argc--;
+
+ freq = strtoul(argv[0], &end, 10);
+ if (*end != '\0')
+ return 1;
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
+
+ argv++;
+ argc--;
+ }
+
+ /* channel type */
+ if (argc) {
+ for (i = 0; i < ARRAY_SIZE(chanmode); i++) {
+ if (strcasecmp(chanmode[i].name, argv[0]) == 0) {
+ chanmode_selected = &chanmode[i];
+ break;
+ }
+ }
+
+ if (chanmode_selected) {
+ NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
+ chanmode_selected->width);
+ NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1,
+ freq + chanmode_selected->freq1_diff);
+ if (chanmode_selected->chantype != -1)
+ NLA_PUT_U32(msg,
+ NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+ chanmode_selected->chantype);
+
+ argv++;
+ argc--;
+ }
+ }
+
if (argc > 1 && strcmp(argv[0], "mcast-rate") == 0) {
argv++;
argc--;
@@ -513,11 +575,13 @@ static int join_mesh(struct nl80211_state *state, struct
nl_cb *cb,
nla_put_failure:
return -ENOBUFS;
}
-COMMAND(mesh, join, "<mesh ID> [mcast-rate <rate in Mbps>]"
+COMMAND(mesh, join, "<mesh ID> [freq in MHz] [HT20|HT40+|HT40-|NOHT]"
+ " [mcast-rate <rate in Mbps>]"
" [beacon-interval <time in TUs>] [dtim-period <value>]"
" [vendor_sync on|off] [<param>=<value>]*",
NL80211_CMD_JOIN_MESH, 0, CIB_NETDEV, join_mesh,
- "Join a mesh with the given mesh ID with mcast-rate and mesh
parameters.");
+ "Join a mesh with the given mesh ID with frequency, mcast-rate, "
+ "and mesh parameters.");
static int leave_mesh(struct nl80211_state *state, struct nl_cb *cb,
struct nl_msg *msg, int argc, char **argv,
--
1.9.2
--
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