From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from saarni.dnainternet.net ([83.102.40.136]:51759 "EHLO saarni.dnainternet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751055Ab1ADXtH (ORCPT ); Tue, 4 Jan 2011 18:49:07 -0500 Subject: [RFC PATCH 09/17] zd1211rw: implement seq_num for IEEE80211_TX_CTL_ASSIGN_SEQ To: linux-wireless@vger.kernel.org From: Jussi Kivilinna Cc: Daniel Drake , Ulrich Kunitz Date: Wed, 05 Jan 2011 01:49:02 +0200 Message-ID: <20110104234902.25309.49677.stgit@fate.lan> In-Reply-To: <20110104234745.25309.72030.stgit@fate.lan> References: <20110104234745.25309.72030.stgit@fate.lan> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-wireless-owner@vger.kernel.org List-ID: Signed-off-by: Jussi Kivilinna --- drivers/net/wireless/zd1211rw/zd_mac.c | 21 +++++++++++++++++++++ drivers/net/wireless/zd1211rw/zd_mac.h | 2 ++ 2 files changed, 23 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/zd1211rw/zd_mac.c b/drivers/net/wireless/zd1211rw/zd_mac.c index 6be406e..aace010 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.c +++ b/drivers/net/wireless/zd1211rw/zd_mac.c @@ -654,6 +654,24 @@ static int zd_mac_config_beacon(struct ieee80211_hw *hw, struct sk_buff *beacon) (full_len << 19)); } +static void create_tx_desc_seq(struct zd_mac *mac, struct ieee80211_hdr *hdr, + struct ieee80211_tx_info *info) +{ + unsigned long irqflags; + + if (!(info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)) + return; + + spin_lock_irqsave(&mac->seqlock, irqflags); + + if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT) + mac->seqno += 0x10; + hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); + hdr->seq_ctrl |= cpu_to_le16(mac->seqno); + + spin_unlock_irqrestore(&mac->seqlock, irqflags); +} + static int fill_ctrlset(struct zd_mac *mac, struct sk_buff *skb) { @@ -678,6 +696,8 @@ static int fill_ctrlset(struct zd_mac *mac, cs_set_control(mac, cs, hdr, info); + create_tx_desc_seq(mac, hdr, info); + packet_length = frag_len + sizeof(struct zd_ctrlset) + 10; ZD_ASSERT(packet_length <= 0xffff); /* ZD1211B: Computing the length difference this way, gives us @@ -1117,6 +1137,7 @@ struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf) memset(mac, 0, sizeof(*mac)); spin_lock_init(&mac->lock); + spin_lock_init(&mac->seqlock); mac->hw = hw; mac->type = NL80211_IFTYPE_UNSPECIFIED; diff --git a/drivers/net/wireless/zd1211rw/zd_mac.h b/drivers/net/wireless/zd1211rw/zd_mac.h index 0ec6bde..e663451 100644 --- a/drivers/net/wireless/zd1211rw/zd_mac.h +++ b/drivers/net/wireless/zd1211rw/zd_mac.h @@ -186,6 +186,8 @@ struct zd_mac { struct ieee80211_channel channels[14]; struct ieee80211_rate rates[12]; struct ieee80211_supported_band band; + spinlock_t seqlock; + u16 seqno; /* Short preamble (used for RTS/CTS) */ unsigned int short_preamble:1;