1 files changed, 150 insertions, 140 deletions
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
index 949c496084fd..5704e4d7aa68 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
@@ -1,35 +1,34 @@
 /******************************************************************************
+ *
-  Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.
+ *  Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.
+ *
-  This program is free software; you can redistribute it and/or modify it
+ *  This program is free software; you can redistribute it and/or modify it
-  under the terms of version 2 of the GNU General Public License as
+ *  under the terms of version 2 of the GNU General Public License as
-  published by the Free Software Foundation.
+ *  published by the Free Software Foundation.
+ *
-  This program is distributed in the hope that it will be useful, but WITHOUT
+ *  This program is distributed in the hope that it will be useful, but WITHOUT
-  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-  more details.
+ *  more details.
+ *
-  You should have received a copy of the GNU General Public License along with
+ *  You should have received a copy of the GNU General Public License along with
-  this program; if not, write to the Free Software Foundation, Inc., 59
+ *  this program; if not, write to the Free Software Foundation, Inc., 59
-  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
-  The full GNU General Public License is included in this distribution in the
+ *  The full GNU General Public License is included in this distribution in the
-  file called LICENSE.
+ *  file called LICENSE.
+ *
-  Contact Information:
+ *  Contact Information:
-  James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ *  James P. Ketrenos <ipw2100-admin@linux.intel.com>
-  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
-******************************************************************************
+ *
+ *  Few modifications for Realtek's Wi-Fi drivers by
-  Few modifications for Realtek's Wi-Fi drivers by
+ *  Andrea Merello <andrea.merello@gmail.com>
-  Andrea Merello <andrea.merello@gmail.com>
+ *
+ *  A special thanks goes to Realtek for their support !
-  A special thanks goes to Realtek for their support !
+ *
+ ******************************************************************************/
-******************************************************************************/
 #include <linux/compiler.h>
 #include <linux/errno.h>
@@ -55,101 +54,101 @@
 /*
+ *
+ *
-802.11 Data Frame
+ * 802.11 Data Frame
+ *
+ *
-802.11 frame_contorl for data frames - 2 bytes
+ * 802.11 frame_contorl for data frames - 2 bytes
-     ,-----------------------------------------------------------------------------------------.
+ *      ,-----------------------------------------------------------------------------------------.
-bits | 0  |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  a  |  b  |  c  |  d  |  e   |
+ * bits | 0  |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  a  |  b  |  c  |  d  |  e   |
-     |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------|
+ *      |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------|
-val  | 0  |  0  |  0  |  1  |  x  |  0  |  0  |  0  |  1  |  0  |  x  |  x  |  x  |  x  |  x   |
+ * val  | 0  |  0  |  0  |  1  |  x  |  0  |  0  |  0  |  1  |  0  |  x  |  x  |  x  |  x  |  x   |
-     |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------|
+ *      |----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|------|
-desc | ^-ver-^  |  ^type-^  |  ^-----subtype-----^  | to  |from |more |retry| pwr |more |wep   |
+ * desc | ^-ver-^  |  ^type-^  |  ^-----subtype-----^  | to  |from |more |retry| pwr |more |wep   |
-     |          |           | x=0 data,x=1 data+ack | DS  | DS  |frag |     | mgm |data |      |
+ *      |          |           | x=0 data,x=1 data+ack | DS  | DS  |frag |     | mgm |data |      |
-     '-----------------------------------------------------------------------------------------'
+ *      '-----------------------------------------------------------------------------------------'
-                                                    /\
+ *                                                    /\
-                                                    |
+ *                                                    |
-802.11 Data Frame                                   |
+ * 802.11 Data Frame                                  |
-           ,--------- 'ctrl' expands to >-----------'
+ *           ,--------- 'ctrl' expands to >-----------'
-          |
+ *           |
-      ,--'---,-------------------------------------------------------------.
+ *        ,--'---,-------------------------------------------------------------.
-Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
+ *  Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
-      |------|------|---------|---------|---------|------|---------|------|
+ *        |------|------|---------|---------|---------|------|---------|------|
-Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  Frame  |  fcs |
+ *  Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  Frame  |  fcs |
-      |      | tion | (BSSID) |         |         | ence |  data   |      |
+ *        |      | tion | (BSSID) |         |         | ence |  data   |      |
-      `--------------------------------------------------|         |------'
+ *        `--------------------------------------------------|         |------'
-Total: 28 non-data bytes                                 `----.----'
+ *  Total: 28 non-data bytes                                 `----.----'
-                                                              |
+ *                                                                |
-       .- 'Frame data' expands to <---------------------------'
+ *         .- 'Frame data' expands to <---------------------------'
-       |
+ *         |
-       V
+ *         V
-      ,---------------------------------------------------.
+ *        ,---------------------------------------------------.
-Bytes |  1   |  1   |    1    |    3     |  2   |  0-2304 |
+ *  Bytes |  1   |  1   |    1    |    3     |  2   |  0-2304 |
-      |------|------|---------|----------|------|---------|
+ *        |------|------|---------|----------|------|---------|
-Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP      |
+ *  Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP      |
-      | DSAP | SSAP |         |          |      | Packet  |
+ *        | DSAP | SSAP |         |          |      | Packet  |
-      | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8|      |         |
+ *        | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8|      |         |
-      `-----------------------------------------|         |
+ *        `-----------------------------------------|         |
-Total: 8 non-data bytes                         `----.----'
+ *  Total: 8 non-data bytes                         `----.----'
-                                                     |
+ *                                                       |
-       .- 'IP Packet' expands, if WEP enabled, to <--'
+ *         .- 'IP Packet' expands, if WEP enabled, to <--'
-       |
+ *         |
-       V
+ *         V
-      ,-----------------------.
+ *        ,-----------------------.
-Bytes |  4  |   0-2296  |  4  |
+ *  Bytes |  4  |   0-2296  |  4  |
-      |-----|-----------|-----|
+ *        |-----|-----------|-----|
-Desc. | IV  | Encrypted | ICV |
+ *  Desc. | IV  | Encrypted | ICV |
-      |     | IP Packet |     |
+ *        |     | IP Packet |     |
-      `-----------------------'
+ *        `-----------------------'
-Total: 8 non-data bytes
+ *  Total: 8 non-data bytes
+ *
+ *
-802.3 Ethernet Data Frame
+ *  802.3 Ethernet Data Frame
+ *
-      ,-----------------------------------------.
+ *        ,-----------------------------------------.
-Bytes |   6   |   6   |  2   |  Variable |   4  |
+ *  Bytes |   6   |   6   |  2   |  Variable |   4  |
-      |-------|-------|------|-----------|------|
+ *        |-------|-------|------|-----------|------|
-Desc. | Dest. | Source| Type | IP Packet |  fcs |
+ *  Desc. | Dest. | Source| Type | IP Packet |  fcs |
-      |  MAC  |  MAC  |      |           |      |
+ *        |  MAC  |  MAC  |      |           |      |
-      `-----------------------------------------'
+ *        `-----------------------------------------'
-Total: 18 non-data bytes
+ *  Total: 18 non-data bytes
+ *
-In the event that fragmentation is required, the incoming payload is split into
+ *  In the event that fragmentation is required, the incoming payload is split into
-N parts of size ieee->fts.  The first fragment contains the SNAP header and the
+ *  N parts of size ieee->fts.  The first fragment contains the SNAP header and the
-remaining packets are just data.
+ *  remaining packets are just data.
+ *
-If encryption is enabled, each fragment payload size is reduced by enough space
+ *  If encryption is enabled, each fragment payload size is reduced by enough space
-to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
+ *  to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
-So if you have 1500 bytes of payload with ieee->fts set to 500 without
+ *  So if you have 1500 bytes of payload with ieee->fts set to 500 without
-encryption it will take 3 frames.  With WEP it will take 4 frames as the
+ *  encryption it will take 3 frames.  With WEP it will take 4 frames as the
-payload of each frame is reduced to 492 bytes.
+ *  payload of each frame is reduced to 492 bytes.
+ *
-* SKB visualization
+ * SKB visualization
-*
+ *
-*  ,- skb->data
+ *  ,- skb->data
-* |
+ * |
-* |    ETHERNET HEADER        ,-<-- PAYLOAD
+ * |    ETHERNET HEADER        ,-<-- PAYLOAD
-* |                           |     14 bytes from skb->data
+ * |                           |     14 bytes from skb->data
-* |  2 bytes for Type --> ,T. |     (sizeof ethhdr)
+ * |  2 bytes for Type --> ,T. |     (sizeof ethhdr)
-* |                       | | |
+ * |                       | | |
-* |,-Dest.--. ,--Src.---. | | |
+ * |,-Dest.--. ,--Src.---. | | |
-* |  6 bytes| | 6 bytes | | | |
+ * |  6 bytes| | 6 bytes | | | |
-* v         | |         | | | |
+ * v         | |         | | | |
-* 0         | v       1 | v | v           2
+ * 0         | v       1 | v | v           2
-* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
-*     ^     | ^         | ^ |
+ *     ^     | ^         | ^ |
-*     |     | |         | | |
+ *     |     | |         | | |
-*     |     | |         | `T' <---- 2 bytes for Type
+ *     |     | |         | `T' <---- 2 bytes for Type
-*     |     | |         |
+ *     |     | |         |
-*     |     | '---SNAP--' <-------- 6 bytes for SNAP
+ *     |     | '---SNAP--' <-------- 6 bytes for SNAP
-*     |     |
+ *     |     |
-*     `-IV--' <-------------------- 4 bytes for IV (WEP)
+ *     `-IV--' <-------------------- 4 bytes for IV (WEP)
-*
+ *
-*      SNAP HEADER
+ *      SNAP HEADER
-*
+ *
-*/
+ */
 static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
 static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
@@ -205,11 +204,13 @@ int ieee80211_encrypt_fragment(
        }
        /* To encrypt, frame format is:
-         * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
+         * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes)
+         */
        // PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU encryption.
        /* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so
-         * call both MSDU and MPDU encryption functions from here. */
+         * call both MSDU and MPDU encryption functions from here.
+         */
        atomic_inc(&crypt->refcnt);
        res = 0;
        if (crypt->ops->encrypt_msdu)
@@ -620,7 +621,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
        spin_lock_irqsave(&ieee->lock, flags);
        /* If there is no driver handler to take the TXB, dont' bother
-         * creating it... */
+         * creating it...
+         */
        if ((!ieee->hard_start_xmit && !(ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE))||
           ((!ieee->softmac_data_hard_start_xmit && (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)))) {
                printk(KERN_WARNING "%s: No xmit handler.\n",
@@ -683,13 +685,15 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                if (ieee->iw_mode == IW_MODE_INFRA) {
                        fc |= IEEE80211_FCTL_TODS;
                        /* To DS: Addr1 = BSSID, Addr2 = SA,
-                        Addr3 = DA */
+                         * Addr3 = DA
+                         */
                        memcpy(&header.addr1, ieee->current_network.bssid, ETH_ALEN);
                        memcpy(&header.addr2, &src, ETH_ALEN);
                        memcpy(&header.addr3, &dest, ETH_ALEN);
                } else if (ieee->iw_mode == IW_MODE_ADHOC) {
                        /* not From/To DS: Addr1 = DA, Addr2 = SA,
-                        Addr3 = BSSID */
+                         * Addr3 = BSSID
+                         */
                        memcpy(&header.addr1, dest, ETH_ALEN);
                        memcpy(&header.addr2, src, ETH_ALEN);
                        memcpy(&header.addr3, ieee->current_network.bssid, ETH_ALEN);
@@ -698,7 +702,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                header.frame_ctl = cpu_to_le16(fc);
                /* Determine fragmentation size based on destination (multicast
-                * and broadcast are not fragmented) */
+                 * and broadcast are not fragmented)
+                 */
                if (is_multicast_ether_addr(header.addr1)) {
                        frag_size = MAX_FRAG_THRESHOLD;
                        qos_ctl |= QOS_CTL_NOTCONTAIN_ACK;
@@ -720,9 +725,10 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                        hdr_len = IEEE80211_3ADDR_LEN;
                }
                /* Determine amount of payload per fragment.  Regardless of if
-                * this stack is providing the full 802.11 header, one will
+                 * this stack is providing the full 802.11 header, one will
-                * eventually be affixed to this fragment -- so we must account for
+                 * eventually be affixed to this fragment -- so we must account for
-                * it when determining the amount of payload space. */
+                 * it when determining the amount of payload space.
+                 */
                bytes_per_frag = frag_size - hdr_len;
                if (ieee->config &
                (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
@@ -734,7 +740,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                                crypt->ops->extra_postfix_len;
                /* Number of fragments is the total bytes_per_frag /
-                * payload_per_fragment */
+                 * payload_per_fragment
+                 */
                nr_frags = bytes / bytes_per_frag;
                bytes_last_frag = bytes % bytes_per_frag;
                if (bytes_last_frag)
@@ -743,8 +750,9 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                        bytes_last_frag = bytes_per_frag;
                /* When we allocate the TXB we allocate enough space for the reserve
-                * and full fragment bytes (bytes_per_frag doesn't include prefix,
+                 * and full fragment bytes (bytes_per_frag doesn't include prefix,
-                * postfix, header, FCS, etc.) */
+                 * postfix, header, FCS, etc.)
+                 */
                txb = ieee80211_alloc_txb(nr_frags, frag_size + ieee->tx_headroom, GFP_ATOMIC);
                if (unlikely(!txb)) {
                        printk(KERN_WARNING "%s: Could not allocate TXB\n",
@@ -791,7 +799,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                        memcpy(frag_hdr, &header, hdr_len);
                        /* If this is not the last fragment, then add the MOREFRAGS
-                        * bit to the frame control */
+                         * bit to the frame control
+                         */
                        if (i != nr_frags - 1) {
                                frag_hdr->frame_ctl = cpu_to_le16(
                                        fc | IEEE80211_FCTL_MOREFRAGS);
@@ -824,7 +833,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev)
                        skb_pull(skb, bytes);
                        /* Encryption routine will move the header forward in order
-                        * to insert the IV between the header and the payload */
+                         * to insert the IV between the header and the payload
+                         */
                        if (encrypt)
                                ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
                        if (ieee->config &

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c index 949c496084fd..5704e4d7aa68 100644 --- a/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c +++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_tx.c
@@ -1,35 +1,34 @@
1	/******************************************************************************	1	/******************************************************************************
2		2	*
3	Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.	3	* Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.
4		4	*
5	This program is free software; you can redistribute it and/or modify it	5	* This program is free software; you can redistribute it and/or modify it
6	under the terms of version 2 of the GNU General Public License as	6	* under the terms of version 2 of the GNU General Public License as
7	published by the Free Software Foundation.	7	* published by the Free Software Foundation.
8		8	*
9	This program is distributed in the hope that it will be useful, but WITHOUT	9	* This program is distributed in the hope that it will be useful, but WITHOUT
10	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12	more details.	12	* more details.
13		13	*
14	You should have received a copy of the GNU General Public License along with	14	* You should have received a copy of the GNU General Public License along with
15	this program; if not, write to the Free Software Foundation, Inc., 59	15	* this program; if not, write to the Free Software Foundation, Inc., 59
16	Temple Place - Suite 330, Boston, MA 02111-1307, USA.	16	* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17		17	*
18	The full GNU General Public License is included in this distribution in the	18	* The full GNU General Public License is included in this distribution in the
19	file called LICENSE.	19	* file called LICENSE.
20		20	*
21	Contact Information:	21	* Contact Information:
22	James P. Ketrenos <ipw2100-admin@linux.intel.com>	22	* James P. Ketrenos <ipw2100-admin@linux.intel.com>
23	Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497	23	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24		24	*
25	******************************************************************************	25	*
26		26	* Few modifications for Realtek's Wi-Fi drivers by
27	Few modifications for Realtek's Wi-Fi drivers by	27	* Andrea Merello <andrea.merello@gmail.com>
28	Andrea Merello <andrea.merello@gmail.com>	28	*
29		29	* A special thanks goes to Realtek for their support !
30	A special thanks goes to Realtek for their support !	30	*
31		31	******************************************************************************/
32	******************************************************************************/
33		32
34	#include <linux/compiler.h>	33	#include <linux/compiler.h>
35	#include <linux/errno.h>	34	#include <linux/errno.h>
@@ -55,101 +54,101 @@
55		54
56		55
57	/*	56	/*
58		57	*
59		58	*
60	802.11 Data Frame	59	* 802.11 Data Frame
61		60	*
62		61	*
63	802.11 frame_contorl for data frames - 2 bytes	62	* 802.11 frame_contorl for data frames - 2 bytes
64	,-----------------------------------------------------------------------------------------.	63	* ,-----------------------------------------------------------------------------------------.
65	bits \| 0 \| 1 \| 2 \| 3 \| 4 \| 5 \| 6 \| 7 \| 8 \| 9 \| a \| b \| c \| d \| e \|	64	* bits \| 0 \| 1 \| 2 \| 3 \| 4 \| 5 \| 6 \| 7 \| 8 \| 9 \| a \| b \| c \| d \| e \|
66	\|----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|------\|	65	* \|----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|------\|
67	val \| 0 \| 0 \| 0 \| 1 \| x \| 0 \| 0 \| 0 \| 1 \| 0 \| x \| x \| x \| x \| x \|	66	* val \| 0 \| 0 \| 0 \| 1 \| x \| 0 \| 0 \| 0 \| 1 \| 0 \| x \| x \| x \| x \| x \|
68	\|----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|------\|	67	* \|----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|-----\|------\|
69	desc \| ^-ver-^ \| ^type-^ \| ^-----subtype-----^ \| to \|from \|more \|retry\| pwr \|more \|wep \|	68	* desc \| ^-ver-^ \| ^type-^ \| ^-----subtype-----^ \| to \|from \|more \|retry\| pwr \|more \|wep \|
70	\| \| \| x=0 data,x=1 data+ack \| DS \| DS \|frag \| \| mgm \|data \| \|	69	* \| \| \| x=0 data,x=1 data+ack \| DS \| DS \|frag \| \| mgm \|data \| \|
71	'-----------------------------------------------------------------------------------------'	70	* '-----------------------------------------------------------------------------------------'
72	/\	71	* /\
73	\|	72	* \|
74	802.11 Data Frame \|	73	* 802.11 Data Frame \|
75	,--------- 'ctrl' expands to >-----------'	74	* ,--------- 'ctrl' expands to >-----------'
76	\|	75	* \|
77	,--'---,-------------------------------------------------------------.	76	* ,--'---,-------------------------------------------------------------.
78	Bytes \| 2 \| 2 \| 6 \| 6 \| 6 \| 2 \| 0..2312 \| 4 \|	77	* Bytes \| 2 \| 2 \| 6 \| 6 \| 6 \| 2 \| 0..2312 \| 4 \|
79	\|------\|------\|---------\|---------\|---------\|------\|---------\|------\|	78	* \|------\|------\|---------\|---------\|---------\|------\|---------\|------\|
80	Desc. \| ctrl \| dura \| DA/RA \| TA \| SA \| Sequ \| Frame \| fcs \|	79	* Desc. \| ctrl \| dura \| DA/RA \| TA \| SA \| Sequ \| Frame \| fcs \|
81	\| \| tion \| (BSSID) \| \| \| ence \| data \| \|	80	* \| \| tion \| (BSSID) \| \| \| ence \| data \| \|
82	`--------------------------------------------------\| \|------'	81	* `--------------------------------------------------\| \|------'
83	Total: 28 non-data bytes `----.----'	82	* Total: 28 non-data bytes `----.----'
84	\|	83	* \|
85	.- 'Frame data' expands to <---------------------------'	84	* .- 'Frame data' expands to <---------------------------'
86	\|	85	* \|
87	V	86	* V
88	,---------------------------------------------------.	87	* ,---------------------------------------------------.
89	Bytes \| 1 \| 1 \| 1 \| 3 \| 2 \| 0-2304 \|	88	* Bytes \| 1 \| 1 \| 1 \| 3 \| 2 \| 0-2304 \|
90	\|------\|------\|---------\|----------\|------\|---------\|	89	* \|------\|------\|---------\|----------\|------\|---------\|
91	Desc. \| SNAP \| SNAP \| Control \|Eth Tunnel\| Type \| IP \|	90	* Desc. \| SNAP \| SNAP \| Control \|Eth Tunnel\| Type \| IP \|
92	\| DSAP \| SSAP \| \| \| \| Packet \|	91	* \| DSAP \| SSAP \| \| \| \| Packet \|
93	\| 0xAA \| 0xAA \|0x03 (UI)\|0x00-00-F8\| \| \|	92	* \| 0xAA \| 0xAA \|0x03 (UI)\|0x00-00-F8\| \| \|
94	`-----------------------------------------\| \|	93	* `-----------------------------------------\| \|
95	Total: 8 non-data bytes `----.----'	94	* Total: 8 non-data bytes `----.----'
96	\|	95	* \|
97	.- 'IP Packet' expands, if WEP enabled, to <--'	96	* .- 'IP Packet' expands, if WEP enabled, to <--'
98	\|	97	* \|
99	V	98	* V
100	,-----------------------.	99	* ,-----------------------.
101	Bytes \| 4 \| 0-2296 \| 4 \|	100	* Bytes \| 4 \| 0-2296 \| 4 \|
102	\|-----\|-----------\|-----\|	101	* \|-----\|-----------\|-----\|
103	Desc. \| IV \| Encrypted \| ICV \|	102	* Desc. \| IV \| Encrypted \| ICV \|
104	\| \| IP Packet \| \|	103	* \| \| IP Packet \| \|
105	`-----------------------'	104	* `-----------------------'
106	Total: 8 non-data bytes	105	* Total: 8 non-data bytes
107		106	*
108		107	*
109	802.3 Ethernet Data Frame	108	* 802.3 Ethernet Data Frame
110		109	*
111	,-----------------------------------------.	110	* ,-----------------------------------------.
112	Bytes \| 6 \| 6 \| 2 \| Variable \| 4 \|	111	* Bytes \| 6 \| 6 \| 2 \| Variable \| 4 \|
113	\|-------\|-------\|------\|-----------\|------\|	112	* \|-------\|-------\|------\|-----------\|------\|
114	Desc. \| Dest. \| Source\| Type \| IP Packet \| fcs \|	113	* Desc. \| Dest. \| Source\| Type \| IP Packet \| fcs \|
115	\| MAC \| MAC \| \| \| \|	114	* \| MAC \| MAC \| \| \| \|
116	`-----------------------------------------'	115	* `-----------------------------------------'
117	Total: 18 non-data bytes	116	* Total: 18 non-data bytes
118		117	*
119	In the event that fragmentation is required, the incoming payload is split into	118	* In the event that fragmentation is required, the incoming payload is split into
120	N parts of size ieee->fts. The first fragment contains the SNAP header and the	119	* N parts of size ieee->fts. The first fragment contains the SNAP header and the
121	remaining packets are just data.	120	* remaining packets are just data.
122		121	*
123	If encryption is enabled, each fragment payload size is reduced by enough space	122	* If encryption is enabled, each fragment payload size is reduced by enough space
124	to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)	123	* to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
125	So if you have 1500 bytes of payload with ieee->fts set to 500 without	124	* So if you have 1500 bytes of payload with ieee->fts set to 500 without
126	encryption it will take 3 frames. With WEP it will take 4 frames as the	125	* encryption it will take 3 frames. With WEP it will take 4 frames as the
127	payload of each frame is reduced to 492 bytes.	126	* payload of each frame is reduced to 492 bytes.
128		127	*
129	* SKB visualization	128	* SKB visualization
130	*	129	*
131	* ,- skb->data	130	* ,- skb->data
132	* \|	131	* \|
133	* \| ETHERNET HEADER ,-<-- PAYLOAD	132	* \| ETHERNET HEADER ,-<-- PAYLOAD
134	* \| \| 14 bytes from skb->data	133	* \| \| 14 bytes from skb->data
135	* \| 2 bytes for Type --> ,T. \| (sizeof ethhdr)	134	* \| 2 bytes for Type --> ,T. \| (sizeof ethhdr)
136	* \| \| \| \|	135	* \| \| \| \|
137	* \|,-Dest.--. ,--Src.---. \| \| \|	136	* \|,-Dest.--. ,--Src.---. \| \| \|
138	* \| 6 bytes\| \| 6 bytes \| \| \| \|	137	* \| 6 bytes\| \| 6 bytes \| \| \| \|
139	* v \| \| \| \| \| \|	138	* v \| \| \| \| \| \|
140	* 0 \| v 1 \| v \| v 2	139	* 0 \| v 1 \| v \| v 2
141	* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5	140	* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
142	* ^ \| ^ \| ^ \|	141	* ^ \| ^ \| ^ \|
143	* \| \| \| \| \| \|	142	* \| \| \| \| \| \|
144	* \| \| \| \| `T' <---- 2 bytes for Type	143	* \| \| \| \| `T' <---- 2 bytes for Type
145	* \| \| \| \|	144	* \| \| \| \|
146	* \| \| '---SNAP--' <-------- 6 bytes for SNAP	145	* \| \| '---SNAP--' <-------- 6 bytes for SNAP
147	* \| \|	146	* \| \|
148	* `-IV--' <-------------------- 4 bytes for IV (WEP)	147	* `-IV--' <-------------------- 4 bytes for IV (WEP)
149	*	148	*
150	* SNAP HEADER	149	* SNAP HEADER
151	*	150	*
152	*/	151	*/
153		152
154	static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };	153	static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
155	static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };	154	static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
@@ -205,11 +204,13 @@ int ieee80211_encrypt_fragment(
205	}	204	}
206		205
207	/* To encrypt, frame format is:	206	/* To encrypt, frame format is:
208	* IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */	207	* IV (4 bytes), clear payload (including SNAP), ICV (4 bytes)
		208	*/
209		209
210	// PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU encryption.	210	// PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU encryption.
211	/* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so	211	/* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so
212	* call both MSDU and MPDU encryption functions from here. */	212	* call both MSDU and MPDU encryption functions from here.
		213	*/
213	atomic_inc(&crypt->refcnt);	214	atomic_inc(&crypt->refcnt);
214	res = 0;	215	res = 0;
215	if (crypt->ops->encrypt_msdu)	216	if (crypt->ops->encrypt_msdu)
@@ -620,7 +621,8 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
620	spin_lock_irqsave(&ieee->lock, flags);	621	spin_lock_irqsave(&ieee->lock, flags);
621		622
622	/* If there is no driver handler to take the TXB, dont' bother	623	/* If there is no driver handler to take the TXB, dont' bother
623	* creating it... */	624	* creating it...
		625	*/
624	if ((!ieee->hard_start_xmit && !(ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE))\|\|	626	if ((!ieee->hard_start_xmit && !(ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE))\|\|
625	((!ieee->softmac_data_hard_start_xmit && (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)))) {	627	((!ieee->softmac_data_hard_start_xmit && (ieee->softmac_features & IEEE_SOFTMAC_TX_QUEUE)))) {
626	printk(KERN_WARNING "%s: No xmit handler.\n",	628	printk(KERN_WARNING "%s: No xmit handler.\n",
@@ -683,13 +685,15 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
683	if (ieee->iw_mode == IW_MODE_INFRA) {	685	if (ieee->iw_mode == IW_MODE_INFRA) {
684	fc \|= IEEE80211_FCTL_TODS;	686	fc \|= IEEE80211_FCTL_TODS;
685	/* To DS: Addr1 = BSSID, Addr2 = SA,	687	/* To DS: Addr1 = BSSID, Addr2 = SA,
686	Addr3 = DA */	688	* Addr3 = DA
		689	*/
687	memcpy(&header.addr1, ieee->current_network.bssid, ETH_ALEN);	690	memcpy(&header.addr1, ieee->current_network.bssid, ETH_ALEN);
688	memcpy(&header.addr2, &src, ETH_ALEN);	691	memcpy(&header.addr2, &src, ETH_ALEN);
689	memcpy(&header.addr3, &dest, ETH_ALEN);	692	memcpy(&header.addr3, &dest, ETH_ALEN);
690	} else if (ieee->iw_mode == IW_MODE_ADHOC) {	693	} else if (ieee->iw_mode == IW_MODE_ADHOC) {
691	/* not From/To DS: Addr1 = DA, Addr2 = SA,	694	/* not From/To DS: Addr1 = DA, Addr2 = SA,
692	Addr3 = BSSID */	695	* Addr3 = BSSID
		696	*/
693	memcpy(&header.addr1, dest, ETH_ALEN);	697	memcpy(&header.addr1, dest, ETH_ALEN);
694	memcpy(&header.addr2, src, ETH_ALEN);	698	memcpy(&header.addr2, src, ETH_ALEN);
695	memcpy(&header.addr3, ieee->current_network.bssid, ETH_ALEN);	699	memcpy(&header.addr3, ieee->current_network.bssid, ETH_ALEN);
@@ -698,7 +702,8 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
698	header.frame_ctl = cpu_to_le16(fc);	702	header.frame_ctl = cpu_to_le16(fc);
699		703
700	/* Determine fragmentation size based on destination (multicast	704	/* Determine fragmentation size based on destination (multicast
701	* and broadcast are not fragmented) */	705	* and broadcast are not fragmented)
		706	*/
702	if (is_multicast_ether_addr(header.addr1)) {	707	if (is_multicast_ether_addr(header.addr1)) {
703	frag_size = MAX_FRAG_THRESHOLD;	708	frag_size = MAX_FRAG_THRESHOLD;
704	qos_ctl \|= QOS_CTL_NOTCONTAIN_ACK;	709	qos_ctl \|= QOS_CTL_NOTCONTAIN_ACK;
@@ -720,9 +725,10 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
720	hdr_len = IEEE80211_3ADDR_LEN;	725	hdr_len = IEEE80211_3ADDR_LEN;
721	}	726	}
722	/* Determine amount of payload per fragment. Regardless of if	727	/* Determine amount of payload per fragment. Regardless of if
723	* this stack is providing the full 802.11 header, one will	728	* this stack is providing the full 802.11 header, one will
724	* eventually be affixed to this fragment -- so we must account for	729	* eventually be affixed to this fragment -- so we must account for
725	* it when determining the amount of payload space. */	730	* it when determining the amount of payload space.
		731	*/
726	bytes_per_frag = frag_size - hdr_len;	732	bytes_per_frag = frag_size - hdr_len;
727	if (ieee->config &	733	if (ieee->config &
728	(CFG_IEEE80211_COMPUTE_FCS \| CFG_IEEE80211_RESERVE_FCS))	734	(CFG_IEEE80211_COMPUTE_FCS \| CFG_IEEE80211_RESERVE_FCS))
@@ -734,7 +740,8 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
734	crypt->ops->extra_postfix_len;	740	crypt->ops->extra_postfix_len;
735		741
736	/* Number of fragments is the total bytes_per_frag /	742	/* Number of fragments is the total bytes_per_frag /
737	* payload_per_fragment */	743	* payload_per_fragment
		744	*/
738	nr_frags = bytes / bytes_per_frag;	745	nr_frags = bytes / bytes_per_frag;
739	bytes_last_frag = bytes % bytes_per_frag;	746	bytes_last_frag = bytes % bytes_per_frag;
740	if (bytes_last_frag)	747	if (bytes_last_frag)
@@ -743,8 +750,9 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
743	bytes_last_frag = bytes_per_frag;	750	bytes_last_frag = bytes_per_frag;
744		751
745	/* When we allocate the TXB we allocate enough space for the reserve	752	/* When we allocate the TXB we allocate enough space for the reserve
746	* and full fragment bytes (bytes_per_frag doesn't include prefix,	753	* and full fragment bytes (bytes_per_frag doesn't include prefix,
747	* postfix, header, FCS, etc.) */	754	* postfix, header, FCS, etc.)
		755	*/
748	txb = ieee80211_alloc_txb(nr_frags, frag_size + ieee->tx_headroom, GFP_ATOMIC);	756	txb = ieee80211_alloc_txb(nr_frags, frag_size + ieee->tx_headroom, GFP_ATOMIC);
749	if (unlikely(!txb)) {	757	if (unlikely(!txb)) {
750	printk(KERN_WARNING "%s: Could not allocate TXB\n",	758	printk(KERN_WARNING "%s: Could not allocate TXB\n",
@@ -791,7 +799,8 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
791	memcpy(frag_hdr, &header, hdr_len);	799	memcpy(frag_hdr, &header, hdr_len);
792		800
793	/* If this is not the last fragment, then add the MOREFRAGS	801	/* If this is not the last fragment, then add the MOREFRAGS
794	* bit to the frame control */	802	* bit to the frame control
		803	*/
795	if (i != nr_frags - 1) {	804	if (i != nr_frags - 1) {
796	frag_hdr->frame_ctl = cpu_to_le16(	805	frag_hdr->frame_ctl = cpu_to_le16(
797	fc \| IEEE80211_FCTL_MOREFRAGS);	806	fc \| IEEE80211_FCTL_MOREFRAGS);
@@ -824,7 +833,8 @@ int ieee80211_xmit(struct sk_buff skb, struct net_device dev)
824	skb_pull(skb, bytes);	833	skb_pull(skb, bytes);
825		834
826	/* Encryption routine will move the header forward in order	835	/* Encryption routine will move the header forward in order
827	* to insert the IV between the header and the payload */	836	* to insert the IV between the header and the payload
		837	*/
828	if (encrypt)	838	if (encrypt)
829	ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);	839	ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
830	if (ieee->config &	840	if (ieee->config &