Hi, 2014-06-05 12:57 GMT+04:00 Gaurav Kumar Chauhan <ck.gaurav@xxxxxxxxxxxxxxxxxx>: > I am working on measuring channel load which requires knowledge of carrier > sensing. > > I am comfortable with virtual carrier sensing but not with physical carrier > sensing. > I tried to google it but didn't get more than basics. I want to know about > physical carrier > sensing in detail and where code for physical sensing is present. > > Is it in driver or in firmware? > I am using atheros pci-express card and ath9k driver. Physical and virtual carrier sensing are both realized in hardware at least in AR9xxx chips. Chip provides some knobs to control both of them (on/off, setup levels, etc.) and allows retrieve some statistics (see channel survey code of ath9k driver for example). -- BR, Sergey -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
