/* * Copyright 2002-2004, Instant802 Networks, Inc. * Copyright 2005, Devicescape Software, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef IEEE80211_KEY_H #define IEEE80211_KEY_H #include #include #include #include #include #define NUM_DEFAULT_KEYS 4 #define NUM_DEFAULT_MGMT_KEYS 2 struct ieee80211_local; struct ieee80211_sub_if_data; struct sta_info; /** * enum ieee80211_internal_key_flags - internal key flags * * @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present * in the hardware for TX crypto hardware acceleration. * @KEY_FLAG_TAINTED: Key is tainted and packets should be dropped. * @KEY_FLAG_CIPHER_SCHEME: This key is for a hardware cipher scheme */ enum ieee80211_internal_key_flags { KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0), KEY_FLAG_TAINTED = BIT(1), KEY_FLAG_CIPHER_SCHEME = BIT(2), }; enum ieee80211_internal_tkip_state { TKIP_STATE_NOT_INIT, TKIP_STATE_PHASE1_DONE, TKIP_STATE_PHASE1_HW_UPLOADED, }; struct tkip_ctx { u16 p1k[5]; /* p1k cache */ u32 p1k_iv32; /* iv32 for which p1k computed */ enum ieee80211_internal_tkip_state state; }; struct tkip_ctx_rx { struct tkip_ctx ctx; u32 iv32; /* current iv32 */ u16 iv16; /* current iv16 */ }; struct ieee80211_key { struct ieee80211_local *local; struct ieee80211_sub_if_data *sdata; struct sta_info *sta; /* for sdata list */ struct list_head list; /* protected by key mutex */ unsigned int flags; union { struct { /* protects tx context */ spinlock_t txlock; /* last used TSC */ struct tkip_ctx tx; /* last received RSC */ struct tkip_ctx_rx rx[IEEE80211_NUM_TIDS]; /* number of mic failures */ u32 mic_failures; } tkip; struct { /* * Last received packet number. The first * IEEE80211_NUM_TIDS counters are used with Data * frames and the last counter is used with Robust * Management frames. */ u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN]; struct crypto_aead *tfm; u32 replays; /* dot11RSNAStatsCCMPReplays */ } ccmp; struct { u8 rx_pn[IEEE80211_CMAC_PN_LEN]; struct crypto_cipher *tfm; u32 replays; /* dot11RSNAStatsCMACReplays */ u32 icverrors; /* dot11RSNAStatsCMACICVErrors */ } aes_cmac; struct { u8 rx_pn[IEEE80211_GMAC_PN_LEN]; struct crypto_aead *tfm; u32 replays; /* dot11RSNAStatsCMACReplays */ u32 icverrors; /* dot11RSNAStatsCMACICVErrors */ } aes_gmac; struct { /* Last received packet number. The first * IEEE80211_NUM_TIDS counters are used with Data * frames and the last counter is used with Robust * Management frames. */ u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_GCMP_PN_LEN]; struct crypto_aead *tfm; u32 replays; /* dot11RSNAStatsGCMPReplays */ } gcmp; struct { /* generic cipher scheme */ u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_MAX_PN_LEN]; } gen; } u; #ifdef CONFIG_MAC80211_DEBUGFS struct { struct dentry *stalink; struct dentry *dir; int cnt; } debugfs; #endif /* * key config, must be last because it contains key * material as variable length member */ struct ieee80211_key_conf conf; }; struct ieee80211_key * ieee80211_key_alloc(u32 cipher, int idx, size_t key_len, const u8 *key_data, size_t seq_len, const u8 *seq, const struct ieee80211_cipher_scheme *cs); /* * Insert a key into data structures (sdata, sta if necessary) * to make it used, free old key. On failure, also free the new key. */ int ieee80211_key_link(struct ieee80211_key *key, struct ieee80211_sub_if_data *sdata, struct sta_info *sta); void ieee80211_key_free(struct ieee80211_key *key, bool delay_tailroom); void ieee80211_key_free_unused(struct ieee80211_key *key); void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx, bool uni, bool multi); void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, int idx); void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata, bool force_synchronize); void ieee80211_free_sta_keys(struct ieee80211_local *local, struct sta_info *sta); void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata); void ieee80211_reset_crypto_tx_tailroom(struct ieee80211_sub_if_data *sdata); #define key_mtx_dereference(local, ref) \ rcu_dereference_protected(ref, lockdep_is_held(&((local)->key_mtx))) void ieee80211_delayed_tailroom_dec(struct work_struct *wk); #endif /* IEEE80211_KEY_H */ bel'>mode:
authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/netlabel/netlabel_domainhash.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/netlabel/netlabel_domainhash.c')