Linux 6.18 compat: Drop hmac_sha256 symbol (#277)

* Linux 6.18 compat: Drop `hmac_sha256` symbol

It looks like it is a backwards compatibility code piece, I could find any
occurence of it outside of the core/crypto/sha256.{c,h} and it looks like
driver uses `hmac_sha256_vector` directly anyway that this function was a
(legacy?) wrapper for.

Signed-off-by: SpacingBat3 <spacingbat3@gmail.com>

* chore: update README.md

Signed-off-by: SpacingBat3 <spacingbat3@gmail.com>

---------

Signed-off-by: SpacingBat3 <spacingbat3@gmail.com>

README.md

@@ -1,6 +1,6 @@
 # REALTEK RTL88x2B USB Linux Driver
 **Current Driver Version**: 5.13.1-30
-**Support Kernel**: 2.6.24 ~ 6.15 (with unofficial patches)
+**Support Kernel**: 2.6.24 ~ 6.18 (with unofficial patches)
 
 Linux in-tree rtw8822bu driver is a work in progress. Check [this](https://lore.kernel.org/lkml/20220518082318.3898514-1-s.hauer@pengutronix.de/) patchset.
 

core/crypto/sha256.c

@@ -86,19 +86,3 @@ int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
 	_len[1] = SHA256_MAC_LEN;
 	return sha256_vector(2, _addr, _len, mac);
 }
-
-
-/**
- * hmac_sha256 - HMAC-SHA256 over data buffer (RFC 2104)
- * @key: Key for HMAC operations
- * @key_len: Length of the key in bytes
- * @data: Pointers to the data area
- * @data_len: Length of the data area
- * @mac: Buffer for the hash (32 bytes)
- * Returns: 0 on success, -1 on failure
- */
-int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
-		size_t data_len, u8 *mac)
-{
-	return hmac_sha256_vector(key, key_len, 1, &data, &data_len, mac);
-}

core/crypto/sha256.h

@@ -13,8 +13,6 @@
 
 int hmac_sha256_vector(const u8 *key, size_t key_len, size_t num_elem,
 		       const u8 *addr[], const size_t *len, u8 *mac);
-int hmac_sha256(const u8 *key, size_t key_len, const u8 *data,
-		size_t data_len, u8 *mac);
 int sha256_prf(const u8 *key, size_t key_len, const char *label,
 	       const u8 *data, size_t data_len, u8 *buf, size_t buf_len);
 int sha256_prf_bits(const u8 *key, size_t key_len, const char *label,

include/osdep_service_linux.h

@@ -357,7 +357,9 @@ static inline void timer_hdl(struct timer_list *in_timer)
 static inline void timer_hdl(unsigned long cntx)
 #endif
 {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 16, 0))
+	_timer *ptimer = timer_container_of(ptimer, in_timer, timer);
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0))
 	_timer *ptimer = from_timer(ptimer, in_timer, timer);
 #else
 	_timer *ptimer = (_timer *)cntx;

os_dep/linux/ioctl_cfg80211.c

@@ -3592,7 +3592,12 @@ static void cfg80211_rtw_abort_scan(struct wiphy *wiphy,
 }
 #endif
 
-static int cfg80211_rtw_set_wiphy_params(struct wiphy *wiphy, u32 changed)
+static int cfg80211_rtw_set_wiphy_params(
+	struct wiphy *wiphy,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 17, 0))
+	int radio_idx,
+#endif
+	u32 changed)
 {
 #if 0
 	struct iwm_priv *iwm = wiphy_to_iwm(wiphy);
@@ -4597,6 +4602,9 @@ static int cfg80211_rtw_set_txpower(struct wiphy *wiphy,
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
 	struct wireless_dev *wdev,
 #endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 17, 0))
+	int radio_idx,
+#endif
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 36)) || defined(COMPAT_KERNEL_RELEASE)
 	enum nl80211_tx_power_setting type, int mbm)
 #else
@@ -4659,6 +4667,9 @@ static int cfg80211_rtw_get_txpower(struct wiphy *wiphy,
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 8, 0))
 	struct wireless_dev *wdev,
 #endif
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 17, 0))
+	int radio_idx,
+#endif
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(6, 14, 0))
 	unsigned int link_id,
 #endif