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Bluetooth: EWS: extended window size option support

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Adds support for extended window size (EWS) config option. We enable EWS
feature in L2CAP Info RSP when hs enabled. EWS option is included in L2CAP
Config Req if tx_win (which is set via socket) bigger then standard default
value (63) && hs enabled && remote side supports EWS feature.

Using EWS selects extended control field in L2CAP.

Code partly based on Qualcomm and Atheros patches sent upstream a year ago.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Andrei Emeltchenko 2011-10-11 13:37:42 +03:00 • committed by Gustavo F. Padovan
parent 669bb3962b
commit 6327eb980d
3 changed files with 58 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

8
net/bluetooth/l2cap_sock.c
View file

@ -331,7 +331,7 @@ static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __us
opts.mode = chan->mode;
opts.fcs = chan->fcs;
opts.max_tx = chan->max_tx;
opts.txwin_size = (__u16)chan->tx_win;
opts.txwin_size = chan->tx_win;
len = min_t(unsigned int, len, sizeof(opts));
if (copy_to_user(optval, (char *) &opts, len))
@ -501,7 +501,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us
opts.mode = chan->mode;
opts.fcs = chan->fcs;
opts.max_tx = chan->max_tx;
opts.txwin_size = (__u16)chan->tx_win;
opts.txwin_size = chan->tx_win;
len = min_t(unsigned int, sizeof(opts), optlen);
if (copy_from_user((char *) &opts, optval, len)) {
@ -509,7 +509,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us
break;
}
if (opts.txwin_size > L2CAP_DEFAULT_TX_WINDOW) {
if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) {
err = -EINVAL;
break;
}
@ -533,7 +533,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us
chan->omtu = opts.omtu;
chan->fcs = opts.fcs;
chan->max_tx = opts.max_tx;
chan->tx_win = (__u8)opts.txwin_size;
chan->tx_win = opts.txwin_size;
break;
case L2CAP_LM: