// SPDX-License-Identifier: GPL-2.0 /* * Original code based Host AP (software wireless LAN access point) driver * for Intersil Prism2/2.5/3 - hostap.o module, common routines * * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen * <[email protected]> * Copyright (c) 2002-2003, Jouni Malinen <[email protected]> * Copyright (c) 2004, Intel Corporation * * Few modifications for Realtek's Wi-Fi drivers by * Andrea Merello <[email protected]> * * A special thanks goes to Realtek for their support ! */ #include <linux/compiler.h> #include <linux/errno.h> #include <linux/if_arp.h> #include <linux/in6.h> #include <linux/in.h> #include <linux/ip.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/pci.h> #include <linux/proc_fs.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/tcp.h> #include <linux/types.h> #include <linux/wireless.h> #include <linux/etherdevice.h> #include <linux/uaccess.h> #include <linux/ctype.h> #include "rtllib.h" static void rtllib_rx_mgt(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *stats); static inline void rtllib_monitor_rx(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_status, size_t hdr_length) { … } /* Called only as a tasklet (software IRQ) */ static struct rtllib_frag_entry * rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq, unsigned int frag, u8 tid, u8 *src, u8 *dst) { … } /* Called only as a tasklet (software IRQ) */ static struct sk_buff * rtllib_frag_cache_get(struct rtllib_device *ieee, struct ieee80211_hdr *hdr) { … } /* Called only as a tasklet (software IRQ) */ static int rtllib_frag_cache_invalidate(struct rtllib_device *ieee, struct ieee80211_hdr *hdr) { … } /* rtllib_rx_frame_mgtmt * * Responsible for handling management control frames * * Called by rtllib_rx */ static inline int rtllib_rx_frame_mgmt(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats, u16 type, u16 stype) { … } /* No encapsulation header if EtherType < 0x600 (=length) */ /* Called by rtllib_rx_frame_decrypt */ static int rtllib_is_eapol_frame(struct rtllib_device *ieee, struct sk_buff *skb, size_t hdrlen) { … } /* Called only as a tasklet (software IRQ), by rtllib_rx */ static inline int rtllib_rx_frame_decrypt(struct rtllib_device *ieee, struct sk_buff *skb, struct lib80211_crypt_data *crypt) { … } /* Called only as a tasklet (software IRQ), by rtllib_rx */ static inline int rtllib_rx_frame_decrypt_msdu(struct rtllib_device *ieee, struct sk_buff *skb, int keyidx, struct lib80211_crypt_data *crypt) { … } /* this function is stolen from ipw2200 driver*/ #define IEEE_PACKET_RETRY_TIME … static int is_duplicate_packet(struct rtllib_device *ieee, struct ieee80211_hdr *header) { … } static bool add_reorder_entry(struct rx_ts_record *ts, struct rx_reorder_entry *pReorderEntry) { … } void rtllib_indicate_packets(struct rtllib_device *ieee, struct rtllib_rxb **prxb_indicate_array, u8 index) { … } void rtllib_flush_rx_ts_pending_pkts(struct rtllib_device *ieee, struct rx_ts_record *ts) { … } static void rx_reorder_indicate_packet(struct rtllib_device *ieee, struct rtllib_rxb *prxb, struct rx_ts_record *ts, u16 SeqNum) { … } static u8 parse_subframe(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats, struct rtllib_rxb *rxb, u8 *src, u8 *dst) { … } static size_t rtllib_rx_get_hdrlen(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats) { … } static int rtllib_rx_check_duplicate(struct rtllib_device *ieee, struct sk_buff *skb, u8 multicast) { … } static void rtllib_rx_extract_addr(struct rtllib_device *ieee, struct ieee80211_hdr *hdr, u8 *dst, u8 *src, u8 *bssid) { … } static int rtllib_rx_data_filter(struct rtllib_device *ieee, struct ieee80211_hdr *hdr, u8 *dst, u8 *src, u8 *bssid, u8 *addr2) { … } static int rtllib_rx_get_crypt(struct rtllib_device *ieee, struct sk_buff *skb, struct lib80211_crypt_data **crypt, size_t hdrlen) { … } static int rtllib_rx_decrypt(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats, struct lib80211_crypt_data *crypt, size_t hdrlen) { … } static void rtllib_rx_check_leave_lps(struct rtllib_device *ieee, u8 unicast, u8 nr_subframes) { … } static void rtllib_rx_indicate_pkt_legacy(struct rtllib_device *ieee, struct rtllib_rx_stats *rx_stats, struct rtllib_rxb *rxb, u8 *dst, u8 *src) { … } static int rtllib_rx_infra_adhoc(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats) { … } static int rtllib_rx_monitor(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats) { … } /* All received frames are sent to this function. @skb contains the frame in * IEEE 802.11 format, i.e., in the format it was sent over air. * This function is called only as a tasklet (software IRQ). */ int rtllib_rx(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *rx_stats) { … } EXPORT_SYMBOL(…); static u8 qos_oui[QOS_OUI_LEN] = …; /* Make ther structure we read from the beacon packet has the right values */ static int rtllib_verify_qos_info(struct rtllib_qos_information_element *info_element, int sub_type) { … } /* Parse a QoS parameter element */ static int rtllib_read_qos_param_element( struct rtllib_qos_parameter_info *element_param, struct rtllib_info_element *info_element) { … } /* Parse a QoS information element */ static int rtllib_read_qos_info_element( struct rtllib_qos_information_element *element_info, struct rtllib_info_element *info_element) { … } /* Write QoS parameters from the ac parameters. */ static int rtllib_qos_convert_ac_to_parameters(struct rtllib_qos_parameter_info *param_elm, struct rtllib_qos_data *qos_data) { … } /* we have a generic data element which it may contain QoS information or * parameters element. check the information element length to decide * which type to read */ static int rtllib_parse_qos_info_param_IE(struct rtllib_device *ieee, struct rtllib_info_element *info_element, struct rtllib_network *network) { … } static const char *get_info_element_string(u16 id) { … } static void rtllib_parse_mife_generic(struct rtllib_device *ieee, struct rtllib_info_element *info_element, struct rtllib_network *network, u16 *tmp_htcap_len, u16 *tmp_htinfo_len) { … } static void rtllib_parse_mfie_ht_cap(struct rtllib_info_element *info_element, struct rtllib_network *network, u16 *tmp_htcap_len) { … } int rtllib_parse_info_param(struct rtllib_device *ieee, struct rtllib_info_element *info_element, u16 length, struct rtllib_network *network, struct rtllib_rx_stats *stats) { … } static long rtllib_translate_todbm(u8 signal_strength_index) { … } static inline int rtllib_network_init( struct rtllib_device *ieee, struct rtllib_probe_response *beacon, struct rtllib_network *network, struct rtllib_rx_stats *stats) { … } static inline int is_same_network(struct rtllib_network *src, struct rtllib_network *dst, u8 ssidbroad) { … } static inline void update_network(struct rtllib_device *ieee, struct rtllib_network *dst, struct rtllib_network *src) { … } static int is_passive_channel(struct rtllib_device *rtllib, u8 channel) { … } int rtllib_legal_channel(struct rtllib_device *rtllib, u8 channel) { … } EXPORT_SYMBOL(…); static inline void rtllib_process_probe_response( struct rtllib_device *ieee, struct rtllib_probe_response *beacon, struct rtllib_rx_stats *stats) { … } static void rtllib_rx_mgt(struct rtllib_device *ieee, struct sk_buff *skb, struct rtllib_rx_stats *stats) { … }
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