diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-10-22 13:22:06 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-02-04 10:45:25 +0300 |
| commit | 5ca67688256a0aeede5cba288eaef4d8e4a9e622 (patch) | |
| tree | f1720294f847f5238db5720cc231f64fc7575c78 /drivers/thunderbolt/xdomain.c | |
| parent | 3cd542e6e6afb6fa6c34d4094d498f42e22110f5 (diff) | |
| download | lwn-5ca67688256a0aeede5cba288eaef4d8e4a9e622.tar.gz lwn-5ca67688256a0aeede5cba288eaef4d8e4a9e622.zip | |
thunderbolt: Allow disabling XDomain protocol
This allows disabling XDomain protocol completely if the user does not
plan to use the USB4/Thunderbolt peer-to-peer functionality, or for
security reasons.
XDomain protocol is enabled by default but with this commit it is
possible to disable it by passing "xdomain=0" as module parameter (or
through the kernel command line).
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Diffstat (limited to 'drivers/thunderbolt/xdomain.c')
| -rw-r--r-- | drivers/thunderbolt/xdomain.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c index 6e8bea6a7d39..b242161868c2 100644 --- a/drivers/thunderbolt/xdomain.c +++ b/drivers/thunderbolt/xdomain.c @@ -30,6 +30,10 @@ struct xdomain_request_work { struct tb *tb; }; +static bool tb_xdomain_enabled = true; +module_param_named(xdomain, tb_xdomain_enabled, bool, 0444); +MODULE_PARM_DESC(xdomain, "allow XDomain protocol (default: true)"); + /* Serializes access to the properties and protocol handlers below */ static DEFINE_MUTEX(xdomain_lock); @@ -47,6 +51,11 @@ static const uuid_t tb_xdp_uuid = UUID_INIT(0xb638d70e, 0x42ff, 0x40bb, 0x97, 0xc2, 0x90, 0xe2, 0xc0, 0xb2, 0xff, 0x07); +bool tb_is_xdomain_enabled(void) +{ + return tb_xdomain_enabled; +} + static bool tb_xdomain_match(const struct tb_cfg_request *req, const struct ctl_pkg *pkg) { |