diff options
| author | Dan Williams <dcbw@redhat.com> | 2010-07-29 23:12:53 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-08-16 15:26:13 -0400 |
| commit | 4083858c8b309068024ba43672d831999d69ba3f (patch) | |
| tree | b46dae7fca5e83a160d61f2c0ec4846b9b54068e /drivers/net/wireless/libertas | |
| parent | 1e51b2ff0a33797476932a68d36136921e4e1b05 (diff) | |
libertas: better scan response debugging
Make it a bit easier to debug scan results in the future.
Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/libertas')
| -rw-r--r-- | drivers/net/wireless/libertas/cfg.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c index 51a96f5a342..8bf88fa4369 100644 --- a/drivers/net/wireless/libertas/cfg.c +++ b/drivers/net/wireless/libertas/cfg.c @@ -524,20 +524,31 @@ static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy, pos = scanresp->bssdesc_and_tlvbuffer; + lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer, + scanresp->bssdescriptsize); + tsfdesc = pos + bsssize; tsfsize = 4 + 8 * scanresp->nr_sets; + lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize); /* Validity check: we expect a Marvell-Local TLV */ i = get_unaligned_le16(tsfdesc); tsfdesc += 2; - if (i != TLV_TYPE_TSFTIMESTAMP) + if (i != TLV_TYPE_TSFTIMESTAMP) { + lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i); goto done; + } + /* Validity check: the TLV holds TSF values with 8 bytes each, so * the size in the TLV must match the nr_sets value */ i = get_unaligned_le16(tsfdesc); tsfdesc += 2; - if (i / 8 != scanresp->nr_sets) + if (i / 8 != scanresp->nr_sets) { + lbs_deb_scan("scan response: invalid number of TSF timestamp " + "sets (expected %d got %d)\n", scanresp->nr_sets, + i / 8); goto done; + } for (i = 0; i < scanresp->nr_sets; i++) { const u8 *bssid; @@ -579,8 +590,11 @@ static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy, id = *pos++; elen = *pos++; left -= 2; - if (elen > left || elen == 0) + if (elen > left || elen == 0) { + lbs_deb_scan("scan response: invalid IE fmt\n"); goto done; + } + if (id == WLAN_EID_DS_PARAMS) chan_no = *pos; if (id == WLAN_EID_SSID) { @@ -611,7 +625,9 @@ static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy, capa, intvl, ie, ielen, LBS_SCAN_RSSI_TO_MBM(rssi), GFP_KERNEL); - } + } else + lbs_deb_scan("scan response: missing BSS channel IE\n"); + tsfdesc += 8; } ret = 0; |