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authorJohan Hedberg <johan.hedberg@nokia.com>2010-11-18 22:22:29 +0200
committerGustavo F. Padovan <padovan@profusion.mobi>2010-12-01 21:04:35 -0200
commit127178d24c7eb2df53b1ba2b6f6f743e88178a1b (patch)
treec7ad18dcce00c21d41971fdb1cace5699549e3a0 /net/bluetooth/bnep/core.c
parent392599b95d76f4f3102d8614bdc1957795cd1a3a (diff)
downloadlinux-2.6.38-lt-ux500-127178d24c7eb2df53b1ba2b6f6f743e88178a1b.tar.gz
Bluetooth: Automate remote name requests
In Bluetooth there are no automatic updates of remote device names when they get changed on the remote side. Instead, it is a good idea to do a manual name request when a new connection gets created (for whatever reason) since at this point it is very cheap (no costly baseband connection creation needed just for the sake of the name request). So far userspace has been responsible for this extra name request but tighter control is needed in order not to flood Bluetooth controllers with two many commands during connection creation. It has been shown that some controllers simply fail to function correctly if they get too many (almost) simultaneous commands during connection creation. The simplest way to acheive better control of these commands is to move their sending completely to the kernel side. This patch inserts name requests into the sequence of events that the kernel performs during connection creation. It does this after the remote features have been successfully requested and before any pending authentication requests are performed. The code will work sub-optimally with userspace versions that still do the name requesting themselves (it shouldn't break anything though) so it is recommended to combine this with a userspace software version that doesn't have automated name requests. Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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