// SPDX-License-Identifier: GPL-2.0-only /* * 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) 2004-2005, Intel Corporation */ #include <linux/compiler.h> #include <linux/errno.h> #include <linux/if_arp.h> #include <linux/in6.h> #include <linux/gfp.h> #include <linux/in.h> #include <linux/ip.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/proc_fs.h> #include <linux/skbuff.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 <net/lib80211.h> #include "libipw.h" static void libipw_monitor_rx(struct libipw_device *ieee, struct sk_buff *skb, struct libipw_rx_stats *rx_stats) { … } /* Called only as a tasklet (software IRQ) */ static struct libipw_frag_entry *libipw_frag_cache_find(struct libipw_device *ieee, unsigned int seq, unsigned int frag, u8 * src, u8 * dst) { … } /* Called only as a tasklet (software IRQ) */ static struct sk_buff *libipw_frag_cache_get(struct libipw_device *ieee, struct libipw_hdr_4addr *hdr) { … } /* Called only as a tasklet (software IRQ) */ static int libipw_frag_cache_invalidate(struct libipw_device *ieee, struct libipw_hdr_4addr *hdr) { … } #ifdef NOT_YET /* libipw_rx_frame_mgtmt * * Responsible for handling management control frames * * Called by libipw_rx */ static int libipw_rx_frame_mgmt(struct libipw_device *ieee, struct sk_buff *skb, struct libipw_rx_stats *rx_stats, u16 type, u16 stype) { if (ieee->iw_mode == IW_MODE_MASTER) { printk(KERN_DEBUG "%s: Master mode not yet supported.\n", ieee->dev->name); return 0; /* hostap_update_sta_ps(ieee, (struct hostap_libipw_hdr_4addr *) skb->data);*/ } if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) { if (stype == WLAN_FC_STYPE_BEACON && ieee->iw_mode == IW_MODE_MASTER) { struct sk_buff *skb2; /* Process beacon frames also in kernel driver to * update STA(AP) table statistics */ skb2 = skb_clone(skb, GFP_ATOMIC); if (skb2) hostap_rx(skb2->dev, skb2, rx_stats); } /* send management frames to the user space daemon for * processing */ ieee->apdevstats.rx_packets++; ieee->apdevstats.rx_bytes += skb->len; prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT); return 0; } if (ieee->iw_mode == IW_MODE_MASTER) { if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) { printk(KERN_DEBUG "%s: unknown management frame " "(type=0x%02x, stype=0x%02x) dropped\n", skb->dev->name, type, stype); return -1; } hostap_rx(skb->dev, skb, rx_stats); return 0; } printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame " "received in non-Host AP mode\n", skb->dev->name); return -1; } #endif /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */ /* Ethernet-II snap header (RFC1042 for most EtherTypes) */ static unsigned char libipw_rfc1042_header[] = …; /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */ static unsigned char libipw_bridge_tunnel_header[] = …; /* No encapsulation header if EtherType < 0x600 (=length) */ /* Called by libipw_rx_frame_decrypt */ static int libipw_is_eapol_frame(struct libipw_device *ieee, struct sk_buff *skb) { … } /* Called only as a tasklet (software IRQ), by libipw_rx */ static int libipw_rx_frame_decrypt(struct libipw_device *ieee, struct sk_buff *skb, struct lib80211_crypt_data *crypt) { … } /* Called only as a tasklet (software IRQ), by libipw_rx */ static int libipw_rx_frame_decrypt_msdu(struct libipw_device *ieee, struct sk_buff *skb, int keyidx, struct lib80211_crypt_data *crypt) { … } /* 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 libipw_rx(struct libipw_device *ieee, struct sk_buff *skb, struct libipw_rx_stats *rx_stats) { … } /* Filter out unrelated packets, call libipw_rx[_mgt] * This function takes over the skb, it should not be used again after calling * this function. */ void libipw_rx_any(struct libipw_device *ieee, struct sk_buff *skb, struct libipw_rx_stats *stats) { … } #define MGMT_FRAME_FIXED_PART_LENGTH … static u8 qos_oui[QOS_OUI_LEN] = …; /* * Make the structure we read from the beacon packet to have * the right values */ static int libipw_verify_qos_info(struct libipw_qos_information_element *info_element, int sub_type) { … } /* * Parse a QoS parameter element */ static int libipw_read_qos_param_element( struct libipw_qos_parameter_info *element_param, struct libipw_info_element *info_element) { … } /* * Parse a QoS information element */ static int libipw_read_qos_info_element( struct libipw_qos_information_element *element_info, struct libipw_info_element *info_element) { … } /* * Write QoS parameters from the ac parameters. */ static void libipw_qos_convert_ac_to_parameters(struct libipw_qos_parameter_info *param_elm, struct libipw_qos_parameters *qos_param) { … } /* * 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 libipw_parse_qos_info_param_IE(struct libipw_info_element *info_element, struct libipw_network *network) { … } #ifdef CONFIG_LIBIPW_DEBUG #define MFIE_STRING(x) … static const char *get_info_element_string(u16 id) { … } #endif static int libipw_parse_info_param(struct libipw_info_element *info_element, u16 length, struct libipw_network *network) { … } static int libipw_handle_assoc_resp(struct libipw_device *ieee, struct libipw_assoc_response *frame, struct libipw_rx_stats *stats) { … } /***************************************************/ static int libipw_network_init(struct libipw_device *ieee, struct libipw_probe_response *beacon, struct libipw_network *network, struct libipw_rx_stats *stats) { … } static inline int is_same_network(struct libipw_network *src, struct libipw_network *dst) { … } static void update_network(struct libipw_network *dst, struct libipw_network *src) { … } static inline int is_beacon(__le16 fc) { … } static void libipw_process_probe_response(struct libipw_device *ieee, struct libipw_probe_response *beacon, struct libipw_rx_stats *stats) { … } void libipw_rx_mgt(struct libipw_device *ieee, struct libipw_hdr_4addr *header, struct libipw_rx_stats *stats) { … } EXPORT_SYMBOL_GPL(…); EXPORT_SYMBOL(…); EXPORT_SYMBOL(…);
Codebase Browser
linux