[PATCH v2 5/9] ft: add ft_handshake_setup

James Prestwood
2023-12-06T15:07:21Z

This will be called from station after FT-authentication has
finished. It sets up the handshake object to perform reassociation.

This is essentially a copy-paste of ft_associate without sending
the actual frame.
---
src/ft.c | 32 ++++++++++++++++++++++++++++++++
src/ft.h | 2 ++
2 files changed, 34 insertions(+)

diff --git a/src/ft.c b/src/ft.c
index 358a4594..738e08c3 100644
--- a/src/ft.c
+++ b/src/ft.c
@@ -1276,6 +1276,38 @@ int ft_associate(uint32_t ifindex, const uint8_t *addr)
return ret;
}

+int ft_handshake_setup(uint32_t ifindex, const uint8_t *target)
+{
+ struct netdev *netdev = netdev_find(ifindex);
+ struct handshake_state *hs = netdev_get_handshake(netdev);
+ struct ft_info *info;
+
+ info = ft_info_find(ifindex, target);
+ if (!info)
+ return -ENOENT;
+
+ /*
+ * Either failed or no response. This may have been an FT-over-DS
+ * attempt so clear out the entry so FT-over-Air can try again.
+ */
+ if (info->status != 0) {
+ int status = info->status;
+
+ l_queue_remove(info_list, info);
+ ft_info_destroy(info);
+
+ return status;
+ }
+
+ if (L_WARN_ON(!ft_prepare_handshake(info, hs)))
+ return -EINVAL;
+
+ /* After this no previous auths will be valid */
+ ft_clear_authentications(ifindex);
+
+ return 0;
+}
+
static bool remove_ifindex(void *data, void *user_data)
{
struct ft_info *info = data;
diff --git a/src/ft.h b/src/ft.h
index 51bbe3bc..23d0136e 100644
--- a/src/ft.h
+++ b/src/ft.h
@@ -39,6 +39,8 @@ void __ft_rx_action(uint32_t ifindex, const uint8_t *frame, size_t frame_len);
void __ft_rx_authenticate(uint32_t ifindex, const uint8_t *frame,
size_t frame_len);

+int ft_handshake_setup(uint32_t ifindex, const uint8_t *target);
+
void ft_clear_authentications(uint32_t ifindex);
int ft_action(uint32_t ifindex, uint32_t freq, const struct scan_bss *target);
int ft_associate(uint32_t ifindex, const uint8_t *addr);
--
2.34.1