diff options
| author | Jérôme Pouiller <jerome.pouiller@silabs.com> | 2019-09-19 14:25:43 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-04 10:47:35 +0200 |
| commit | 846239f641db5af8dd952575a65808281f2d849e (patch) | |
| tree | 2a26524b1b29e85026ffe5f20b742c91848fdf89 /drivers/staging/wfx/hif_rx.c | |
| parent | f95a29d40782f4f0052a692a822de3ba044b19ff (diff) | |
staging: wfx: introduce "secure link"
Chip support encryption of the link between host and chip. This feature
is called "secure link". Driver code on github[1] support it. However,
it relies on mbedtls for cryptographic functions. So, I decided to not
import this feature in current patch. However, in order to keep code
synchronized between github and kernel, I imported all code related to
this feature, even if most of it is just no-op.
[1]: https://github.com/SiliconLabs/wfx-linux-driver/
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20190919142527.31797-14-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/wfx/hif_rx.c')
| -rw-r--r-- | drivers/staging/wfx/hif_rx.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/staging/wfx/hif_rx.c b/drivers/staging/wfx/hif_rx.c index ba8ea4f3c91b..dd5f1dea4e85 100644 --- a/drivers/staging/wfx/hif_rx.c +++ b/drivers/staging/wfx/hif_rx.c @@ -11,6 +11,7 @@ #include "hif_rx.h" #include "wfx.h" +#include "secure_link.h" #include "hif_api_cmd.h" static int hif_generic_confirm(struct wfx_dev *wdev, struct hif_msg *hif, void *buf) @@ -46,6 +47,8 @@ static int hif_generic_confirm(struct wfx_dev *wdev, struct hif_msg *hif, void * } else { wdev->hif_cmd.buf_send = NULL; mutex_unlock(&wdev->hif_cmd.lock); + if (cmd != HIF_REQ_ID_SL_EXCHANGE_PUB_KEYS) + mutex_unlock(&wdev->hif_cmd.key_renew_lock); } return status; } @@ -68,11 +71,25 @@ static int hif_startup_indication(struct wfx_dev *wdev, struct hif_msg *hif, voi return 0; } +static int hif_keys_indication(struct wfx_dev *wdev, struct hif_msg *hif, void *buf) +{ + struct hif_ind_sl_exchange_pub_keys *body = buf; + + // Compatibility with legacy secure link + if (body->status == SL_PUB_KEY_EXCHANGE_STATUS_SUCCESS) + body->status = 0; + if (body->status) + dev_warn(wdev->dev, "secure link negociation error\n"); + wfx_sl_check_pubkey(wdev, body->ncp_pub_key, body->ncp_pub_key_mac); + return 0; +} + static const struct { int msg_id; int (*handler)(struct wfx_dev *wdev, struct hif_msg *hif, void *buf); } hif_handlers[] = { { HIF_IND_ID_STARTUP, hif_startup_indication }, + { HIF_IND_ID_SL_EXCHANGE_PUB_KEYS, hif_keys_indication }, }; void wfx_handle_rx(struct wfx_dev *wdev, struct sk_buff *skb) |