diff options
author | John W. Linville <linville@tuxdriver.com> | 2013-12-02 23:25:38 +0400 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2013-12-02 23:25:38 +0400 |
commit | 4b074b07625f603d40d4d04937f8874a00415dc4 (patch) | |
tree | 2dffdc46e3fea0320524f483cf5ac2c058ab59f2 /net/mac80211/util.c | |
parent | 7d68849f40cd9169088249cc889d95c8998c3fb8 (diff) | |
parent | ddcc347b70f298f9d624cd0e250581d831d915fb (diff) | |
download | linux-4b074b07625f603d40d4d04937f8874a00415dc4.tar.xz |
Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Diffstat (limited to 'net/mac80211/util.c')
-rw-r--r-- | net/mac80211/util.c | 95 |
1 files changed, 92 insertions, 3 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 592a18171f95..06265d7f8cc3 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1804,6 +1804,26 @@ void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) mutex_unlock(&local->chanctx_mtx); } +void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_chanctx *chanctx; + + mutex_lock(&local->chanctx_mtx); + + chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, + lockdep_is_held(&local->chanctx_mtx)); + + if (WARN_ON_ONCE(!chanctx_conf)) + goto unlock; + + chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); + ieee80211_recalc_chanctx_min_def(local, chanctx); + unlock: + mutex_unlock(&local->chanctx_mtx); +} + static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) { int i; @@ -2259,14 +2279,17 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local, void ieee80211_dfs_cac_cancel(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; + struct cfg80211_chan_def chandef; mutex_lock(&local->iflist_mtx); list_for_each_entry(sdata, &local->interfaces, list) { cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); if (sdata->wdev.cac_started) { + chandef = sdata->vif.bss_conf.chandef; ieee80211_vif_release_channel(sdata); cfg80211_cac_event(sdata->dev, + &chandef, NL80211_RADAR_CAC_ABORTED, GFP_KERNEL); } @@ -2447,7 +2470,6 @@ int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, if (ieee80211_vif_is_mesh(&sdata->vif)) { struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; - __le16 pre_value; skb_put(skb, 8); *pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */ @@ -2463,8 +2485,7 @@ int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, ifmsh->pre_value = 1; else ifmsh->pre_value++; - pre_value = cpu_to_le16(ifmsh->pre_value); - memcpy(pos, &pre_value, 2); /* Precedence Value */ + put_unaligned_le16(ifmsh->pre_value, pos);/* Precedence Value */ pos += 2; ifmsh->chsw_init = true; } @@ -2472,3 +2493,71 @@ int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata, ieee80211_tx_skb(sdata, skb); return 0; } + +bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs) +{ + return !(cs == NULL || cs->cipher == 0 || + cs->hdr_len < cs->pn_len + cs->pn_off || + cs->hdr_len <= cs->key_idx_off || + cs->key_idx_shift > 7 || + cs->key_idx_mask == 0); +} + +bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n) +{ + int i; + + /* Ensure we have enough iftype bitmap space for all iftype values */ + WARN_ON((NUM_NL80211_IFTYPES / 8 + 1) > sizeof(cs[0].iftype)); + + for (i = 0; i < n; i++) + if (!ieee80211_cs_valid(&cs[i])) + return false; + + return true; +} + +const struct ieee80211_cipher_scheme * +ieee80211_cs_get(struct ieee80211_local *local, u32 cipher, + enum nl80211_iftype iftype) +{ + const struct ieee80211_cipher_scheme *l = local->hw.cipher_schemes; + int n = local->hw.n_cipher_schemes; + int i; + const struct ieee80211_cipher_scheme *cs = NULL; + + for (i = 0; i < n; i++) { + if (l[i].cipher == cipher) { + cs = &l[i]; + break; + } + } + + if (!cs || !(cs->iftype & BIT(iftype))) + return NULL; + + return cs; +} + +int ieee80211_cs_headroom(struct ieee80211_local *local, + struct cfg80211_crypto_settings *crypto, + enum nl80211_iftype iftype) +{ + const struct ieee80211_cipher_scheme *cs; + int headroom = IEEE80211_ENCRYPT_HEADROOM; + int i; + + for (i = 0; i < crypto->n_ciphers_pairwise; i++) { + cs = ieee80211_cs_get(local, crypto->ciphers_pairwise[i], + iftype); + + if (cs && headroom < cs->hdr_len) + headroom = cs->hdr_len; + } + + cs = ieee80211_cs_get(local, crypto->cipher_group, iftype); + if (cs && headroom < cs->hdr_len) + headroom = cs->hdr_len; + + return headroom; +} |