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-rw-r--r--net/ieee802154/6lowpan.h319
-rw-r--r--net/ieee802154/6lowpan_iphc.c3
-rw-r--r--net/ieee802154/6lowpan_rtnl.c (renamed from net/ieee802154/6lowpan.c)411
-rw-r--r--net/ieee802154/Kconfig2
-rw-r--r--net/ieee802154/Makefile6
-rw-r--r--net/ieee802154/af802154.h5
-rw-r--r--net/ieee802154/af_ieee802154.c22
-rw-r--r--net/ieee802154/dgram.c60
-rw-r--r--net/ieee802154/header_ops.c287
-rw-r--r--net/ieee802154/ieee802154.h1
-rw-r--r--net/ieee802154/netlink.c1
-rw-r--r--net/ieee802154/nl-mac.c220
-rw-r--r--net/ieee802154/nl_policy.c10
-rw-r--r--net/ieee802154/raw.c18
-rw-r--r--net/ieee802154/reassembly.c571
-rw-r--r--net/ieee802154/reassembly.h41
-rw-r--r--net/ieee802154/wpan-class.c4
17 files changed, 1304 insertions, 677 deletions
diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h
deleted file mode 100644
index 2b835db3bda8..000000000000
--- a/net/ieee802154/6lowpan.h
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
- * Copyright 2011, Siemens AG
- * written by Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
- */
-
-/*
- * Based on patches from Jon Smirl <jonsmirl@gmail.com>
- * Copyright (c) 2011 Jon Smirl <jonsmirl@gmail.com>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/* Jon's code is based on 6lowpan implementation for Contiki which is:
- * Copyright (c) 2008, Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef __6LOWPAN_H__
-#define __6LOWPAN_H__
-
-#define UIP_802154_SHORTADDR_LEN 2 /* compressed ipv6 address length */
-#define UIP_IPH_LEN 40 /* ipv6 fixed header size */
-#define UIP_PROTO_UDP 17 /* ipv6 next header value for UDP */
-#define UIP_FRAGH_LEN 8 /* ipv6 fragment header size */
-
-/*
- * ipv6 address based on mac
- * second bit-flip (Universe/Local) is done according RFC2464
- */
-#define is_addr_mac_addr_based(a, m) \
- ((((a)->s6_addr[8]) == (((m)[0]) ^ 0x02)) && \
- (((a)->s6_addr[9]) == (m)[1]) && \
- (((a)->s6_addr[10]) == (m)[2]) && \
- (((a)->s6_addr[11]) == (m)[3]) && \
- (((a)->s6_addr[12]) == (m)[4]) && \
- (((a)->s6_addr[13]) == (m)[5]) && \
- (((a)->s6_addr[14]) == (m)[6]) && \
- (((a)->s6_addr[15]) == (m)[7]))
-
-/* ipv6 address is unspecified */
-#define is_addr_unspecified(a) \
- ((((a)->s6_addr32[0]) == 0) && \
- (((a)->s6_addr32[1]) == 0) && \
- (((a)->s6_addr32[2]) == 0) && \
- (((a)->s6_addr32[3]) == 0))
-
-/* compare ipv6 addresses prefixes */
-#define ipaddr_prefixcmp(addr1, addr2, length) \
- (memcmp(addr1, addr2, length >> 3) == 0)
-
-/* local link, i.e. FE80::/10 */
-#define is_addr_link_local(a) (((a)->s6_addr16[0]) == htons(0xFE80))
-
-/*
- * check whether we can compress the IID to 16 bits,
- * it's possible for unicast adresses with first 49 bits are zero only.
- */
-#define lowpan_is_iid_16_bit_compressable(a) \
- ((((a)->s6_addr16[4]) == 0) && \
- (((a)->s6_addr[10]) == 0) && \
- (((a)->s6_addr[11]) == 0xff) && \
- (((a)->s6_addr[12]) == 0xfe) && \
- (((a)->s6_addr[13]) == 0))
-
-/* multicast address */
-#define is_addr_mcast(a) (((a)->s6_addr[0]) == 0xFF)
-
-/* check whether the 112-bit gid of the multicast address is mappable to: */
-
-/* 9 bits, for FF02::1 (all nodes) and FF02::2 (all routers) addresses only. */
-#define lowpan_is_mcast_addr_compressable(a) \
- ((((a)->s6_addr16[1]) == 0) && \
- (((a)->s6_addr16[2]) == 0) && \
- (((a)->s6_addr16[3]) == 0) && \
- (((a)->s6_addr16[4]) == 0) && \
- (((a)->s6_addr16[5]) == 0) && \
- (((a)->s6_addr16[6]) == 0) && \
- (((a)->s6_addr[14]) == 0) && \
- ((((a)->s6_addr[15]) == 1) || (((a)->s6_addr[15]) == 2)))
-
-/* 48 bits, FFXX::00XX:XXXX:XXXX */
-#define lowpan_is_mcast_addr_compressable48(a) \
- ((((a)->s6_addr16[1]) == 0) && \
- (((a)->s6_addr16[2]) == 0) && \
- (((a)->s6_addr16[3]) == 0) && \
- (((a)->s6_addr16[4]) == 0) && \
- (((a)->s6_addr[10]) == 0))
-
-/* 32 bits, FFXX::00XX:XXXX */
-#define lowpan_is_mcast_addr_compressable32(a) \
- ((((a)->s6_addr16[1]) == 0) && \
- (((a)->s6_addr16[2]) == 0) && \
- (((a)->s6_addr16[3]) == 0) && \
- (((a)->s6_addr16[4]) == 0) && \
- (((a)->s6_addr16[5]) == 0) && \
- (((a)->s6_addr[12]) == 0))
-
-/* 8 bits, FF02::00XX */
-#define lowpan_is_mcast_addr_compressable8(a) \
- ((((a)->s6_addr[1]) == 2) && \
- (((a)->s6_addr16[1]) == 0) && \
- (((a)->s6_addr16[2]) == 0) && \
- (((a)->s6_addr16[3]) == 0) && \
- (((a)->s6_addr16[4]) == 0) && \
- (((a)->s6_addr16[5]) == 0) && \
- (((a)->s6_addr16[6]) == 0) && \
- (((a)->s6_addr[14]) == 0))
-
-#define lowpan_is_addr_broadcast(a) \
- ((((a)[0]) == 0xFF) && \
- (((a)[1]) == 0xFF) && \
- (((a)[2]) == 0xFF) && \
- (((a)[3]) == 0xFF) && \
- (((a)[4]) == 0xFF) && \
- (((a)[5]) == 0xFF) && \
- (((a)[6]) == 0xFF) && \
- (((a)[7]) == 0xFF))
-
-#define LOWPAN_DISPATCH_IPV6 0x41 /* 01000001 = 65 */
-#define LOWPAN_DISPATCH_HC1 0x42 /* 01000010 = 66 */
-#define LOWPAN_DISPATCH_IPHC 0x60 /* 011xxxxx = ... */
-#define LOWPAN_DISPATCH_FRAG1 0xc0 /* 11000xxx */
-#define LOWPAN_DISPATCH_FRAGN 0xe0 /* 11100xxx */
-
-#define LOWPAN_DISPATCH_MASK 0xf8 /* 11111000 */
-
-#define LOWPAN_FRAG_TIMEOUT (HZ * 60) /* time-out 60 sec */
-
-#define LOWPAN_FRAG1_HEAD_SIZE 0x4
-#define LOWPAN_FRAGN_HEAD_SIZE 0x5
-
-/*
- * According IEEE802.15.4 standard:
- * - MTU is 127 octets
- * - maximum MHR size is 37 octets
- * - MFR size is 2 octets
- *
- * so minimal payload size that we may guarantee is:
- * MTU - MHR - MFR = 88 octets
- */
-#define LOWPAN_FRAG_SIZE 88
-
-/*
- * Values of fields within the IPHC encoding first byte
- * (C stands for compressed and I for inline)
- */
-#define LOWPAN_IPHC_TF 0x18
-
-#define LOWPAN_IPHC_FL_C 0x10
-#define LOWPAN_IPHC_TC_C 0x08
-#define LOWPAN_IPHC_NH_C 0x04
-#define LOWPAN_IPHC_TTL_1 0x01
-#define LOWPAN_IPHC_TTL_64 0x02
-#define LOWPAN_IPHC_TTL_255 0x03
-#define LOWPAN_IPHC_TTL_I 0x00
-
-
-/* Values of fields within the IPHC encoding second byte */
-#define LOWPAN_IPHC_CID 0x80
-
-#define LOWPAN_IPHC_ADDR_00 0x00
-#define LOWPAN_IPHC_ADDR_01 0x01
-#define LOWPAN_IPHC_ADDR_02 0x02
-#define LOWPAN_IPHC_ADDR_03 0x03
-
-#define LOWPAN_IPHC_SAC 0x40
-#define LOWPAN_IPHC_SAM 0x30
-
-#define LOWPAN_IPHC_SAM_BIT 4
-
-#define LOWPAN_IPHC_M 0x08
-#define LOWPAN_IPHC_DAC 0x04
-#define LOWPAN_IPHC_DAM_00 0x00
-#define LOWPAN_IPHC_DAM_01 0x01
-#define LOWPAN_IPHC_DAM_10 0x02
-#define LOWPAN_IPHC_DAM_11 0x03
-
-#define LOWPAN_IPHC_DAM_BIT 0
-/*
- * LOWPAN_UDP encoding (works together with IPHC)
- */
-#define LOWPAN_NHC_UDP_MASK 0xF8
-#define LOWPAN_NHC_UDP_ID 0xF0
-#define LOWPAN_NHC_UDP_CHECKSUMC 0x04
-#define LOWPAN_NHC_UDP_CHECKSUMI 0x00
-
-#define LOWPAN_NHC_UDP_4BIT_PORT 0xF0B0
-#define LOWPAN_NHC_UDP_4BIT_MASK 0xFFF0
-#define LOWPAN_NHC_UDP_8BIT_PORT 0xF000
-#define LOWPAN_NHC_UDP_8BIT_MASK 0xFF00
-
-/* values for port compression, _with checksum_ ie bit 5 set to 0 */
-#define LOWPAN_NHC_UDP_CS_P_00 0xF0 /* all inline */
-#define LOWPAN_NHC_UDP_CS_P_01 0xF1 /* source 16bit inline,
- dest = 0xF0 + 8 bit inline */
-#define LOWPAN_NHC_UDP_CS_P_10 0xF2 /* source = 0xF0 + 8bit inline,
- dest = 16 bit inline */
-#define LOWPAN_NHC_UDP_CS_P_11 0xF3 /* source & dest = 0xF0B + 4bit inline */
-#define LOWPAN_NHC_UDP_CS_C 0x04 /* checksum elided */
-
-#ifdef DEBUG
-/* print data in line */
-static inline void raw_dump_inline(const char *caller, char *msg,
- unsigned char *buf, int len)
-{
- if (msg)
- pr_debug("%s():%s: ", caller, msg);
-
- print_hex_dump_debug("", DUMP_PREFIX_NONE, 16, 1, buf, len, false);
-}
-
-/* print data in a table format:
- *
- * addr: xx xx xx xx xx xx
- * addr: xx xx xx xx xx xx
- * ...
- */
-static inline void raw_dump_table(const char *caller, char *msg,
- unsigned char *buf, int len)
-{
- if (msg)
- pr_debug("%s():%s:\n", caller, msg);
-
- print_hex_dump_debug("\t", DUMP_PREFIX_OFFSET, 16, 1, buf, len, false);
-}
-#else
-static inline void raw_dump_table(const char *caller, char *msg,
- unsigned char *buf, int len) { }
-static inline void raw_dump_inline(const char *caller, char *msg,
- unsigned char *buf, int len) { }
-#endif
-
-static inline int lowpan_fetch_skb_u8(struct sk_buff *skb, u8 *val)
-{
- if (unlikely(!pskb_may_pull(skb, 1)))
- return -EINVAL;
-
- *val = skb->data[0];
- skb_pull(skb, 1);
-
- return 0;
-}
-
-static inline int lowpan_fetch_skb_u16(struct sk_buff *skb, u16 *val)
-{
- if (unlikely(!pskb_may_pull(skb, 2)))
- return -EINVAL;
-
- *val = (skb->data[0] << 8) | skb->data[1];
- skb_pull(skb, 2);
-
- return 0;
-}
-
-static inline bool lowpan_fetch_skb(struct sk_buff *skb,
- void *data, const unsigned int len)
-{
- if (unlikely(!pskb_may_pull(skb, len)))
- return true;
-
- skb_copy_from_linear_data(skb, data, len);
- skb_pull(skb, len);
-
- return false;
-}
-
-static inline void lowpan_push_hc_data(u8 **hc_ptr, const void *data,
- const size_t len)
-{
- memcpy(*hc_ptr, data, len);
- *hc_ptr += len;
-}
-
-typedef int (*skb_delivery_cb)(struct sk_buff *skb, struct net_device *dev);
-
-int lowpan_process_data(struct sk_buff *skb, struct net_device *dev,
- const u8 *saddr, const u8 saddr_type, const u8 saddr_len,
- const u8 *daddr, const u8 daddr_type, const u8 daddr_len,
- u8 iphc0, u8 iphc1, skb_delivery_cb skb_deliver);
-int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, const void *_daddr,
- const void *_saddr, unsigned int len);
-
-#endif /* __6LOWPAN_H__ */
diff --git a/net/ieee802154/6lowpan_iphc.c b/net/ieee802154/6lowpan_iphc.c
index 860aa2d445ba..211b5686d719 100644
--- a/net/ieee802154/6lowpan_iphc.c
+++ b/net/ieee802154/6lowpan_iphc.c
@@ -54,11 +54,10 @@
#include <linux/if_arp.h>
#include <linux/module.h>
#include <linux/netdevice.h>
+#include <net/6lowpan.h>
#include <net/ipv6.h>
#include <net/af_ieee802154.h>
-#include "6lowpan.h"
-
/*
* Uncompress address function for source and
* destination address(non-multicast).
diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan_rtnl.c
index 48b25c0af4d0..0f5a69ed746d 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan_rtnl.c
@@ -1,10 +1,8 @@
-/*
- * Copyright 2011, Siemens AG
+/* Copyright 2011, Siemens AG
* written by Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
*/
-/*
- * Based on patches from Jon Smirl <jonsmirl@gmail.com>
+/* Based on patches from Jon Smirl <jonsmirl@gmail.com>
* Copyright (c) 2011 Jon Smirl <jonsmirl@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
@@ -15,10 +13,6 @@
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Jon's code is based on 6lowpan implementation for Contiki which is:
@@ -58,9 +52,10 @@
#include <net/af_ieee802154.h>
#include <net/ieee802154.h>
#include <net/ieee802154_netdev.h>
+#include <net/6lowpan.h>
#include <net/ipv6.h>
-#include "6lowpan.h"
+#include "reassembly.h"
static LIST_HEAD(lowpan_devices);
@@ -68,7 +63,7 @@ static LIST_HEAD(lowpan_devices);
struct lowpan_dev_info {
struct net_device *real_dev; /* real WPAN device ptr */
struct mutex dev_list_mtx; /* mutex for list ops */
- unsigned short fragment_tag;
+ __be16 fragment_tag;
};
struct lowpan_dev_record {
@@ -76,18 +71,6 @@ struct lowpan_dev_record {
struct list_head list;
};
-struct lowpan_fragment {
- struct sk_buff *skb; /* skb to be assembled */
- u16 length; /* length to be assemled */
- u32 bytes_rcv; /* bytes received */
- u16 tag; /* current fragment tag */
- struct timer_list timer; /* assembling timer */
- struct list_head list; /* fragments list */
-};
-
-static LIST_HEAD(lowpan_fragments);
-static DEFINE_SPINLOCK(flist_lock);
-
static inline struct
lowpan_dev_info *lowpan_dev_info(const struct net_device *dev)
{
@@ -106,7 +89,6 @@ static int lowpan_header_create(struct sk_buff *skb,
unsigned short type, const void *_daddr,
const void *_saddr, unsigned int len)
{
- struct ipv6hdr *hdr;
const u8 *saddr = _saddr;
const u8 *daddr = _daddr;
struct ieee802154_addr sa, da;
@@ -117,8 +99,6 @@ static int lowpan_header_create(struct sk_buff *skb,
if (type != ETH_P_IPV6)
return 0;
- hdr = ipv6_hdr(skb);
-
if (!saddr)
saddr = dev->dev_addr;
@@ -127,13 +107,11 @@ static int lowpan_header_create(struct sk_buff *skb,
lowpan_header_compress(skb, dev, type, daddr, saddr, len);
- /*
- * NOTE1: I'm still unsure about the fact that compression and WPAN
+ /* NOTE1: I'm still unsure about the fact that compression and WPAN
* header are created here and not later in the xmit. So wait for
* an opinion of net maintainers.
*/
- /*
- * NOTE2: to be absolutely correct, we must derive PANid information
+ /* NOTE2: to be absolutely correct, we must derive PANid information
* from MAC subif of the 'dev' and 'real_dev' network devices, but
* this isn't implemented in mainline yet, so currently we assign 0xff
*/
@@ -141,30 +119,29 @@ static int lowpan_header_create(struct sk_buff *skb,
mac_cb(skb)->seq = ieee802154_mlme_ops(dev)->get_dsn(dev);
/* prepare wpan address data */
- sa.addr_type = IEEE802154_ADDR_LONG;
+ sa.mode = IEEE802154_ADDR_LONG;
sa.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
+ sa.extended_addr = ieee802154_devaddr_from_raw(saddr);
- memcpy(&(sa.hwaddr), saddr, 8);
/* intra-PAN communications */
- da.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
+ da.pan_id = sa.pan_id;
- /*
- * if the destination address is the broadcast address, use the
+ /* if the destination address is the broadcast address, use the
* corresponding short address
*/
if (lowpan_is_addr_broadcast(daddr)) {
- da.addr_type = IEEE802154_ADDR_SHORT;
- da.short_addr = IEEE802154_ADDR_BROADCAST;
+ da.mode = IEEE802154_ADDR_SHORT;
+ da.short_addr = cpu_to_le16(IEEE802154_ADDR_BROADCAST);
} else {
- da.addr_type = IEEE802154_ADDR_LONG;
- memcpy(&(da.hwaddr), daddr, IEEE802154_ADDR_LEN);
+ da.mode = IEEE802154_ADDR_LONG;
+ da.extended_addr = ieee802154_devaddr_from_raw(daddr);
/* request acknowledgment */
mac_cb(skb)->flags |= MAC_CB_FLAG_ACKREQ;
}
return dev_hard_header(skb, lowpan_dev_info(dev)->real_dev,
- type, (void *)&da, (void *)&sa, skb->len);
+ type, (void *)&da, (void *)&sa, 0);
}
static int lowpan_give_skb_to_devices(struct sk_buff *skb,
@@ -191,73 +168,11 @@ static int lowpan_give_skb_to_devices(struct sk_buff *skb,
return stat;
}
-static void lowpan_fragment_timer_expired(unsigned long entry_addr)
-{
- struct lowpan_fragment *entry = (struct lowpan_fragment *)entry_addr;
-
- pr_debug("timer expired for frame with tag %d\n", entry->tag);
-
- list_del(&entry->list);
- dev_kfree_skb(entry->skb);
- kfree(entry);
-}
-
-static struct lowpan_fragment *
-lowpan_alloc_new_frame(struct sk_buff *skb, u16 len, u16 tag)
-{
- struct lowpan_fragment *frame;
-
- frame = kzalloc(sizeof(struct lowpan_fragment),
- GFP_ATOMIC);
- if (!frame)
- goto frame_err;
-
- INIT_LIST_HEAD(&frame->list);
-
- frame->length = len;
- frame->tag = tag;
-
- /* allocate buffer for frame assembling */
- frame->skb = netdev_alloc_skb_ip_align(skb->dev, frame->length +
- sizeof(struct ipv6hdr));
-
- if (!frame->skb)
- goto skb_err;
-
- frame->skb->priority = skb->priority;
-
- /* reserve headroom for uncompressed ipv6 header */
- skb_reserve(frame->skb, sizeof(struct ipv6hdr));
- skb_put(frame->skb, frame->length);
-
- /* copy the first control block to keep a
- * trace of the link-layer addresses in case
- * of a link-local compressed address
- */
- memcpy(frame->skb->cb, skb->cb, sizeof(skb->cb));
-
- init_timer(&frame->timer);
- /* time out is the same as for ipv6 - 60 sec */
- frame->timer.expires = jiffies + LOWPAN_FRAG_TIMEOUT;
- frame->timer.data = (unsigned long)frame;
- frame->timer.function = lowpan_fragment_timer_expired;
-
- add_timer(&frame->timer);
-
- list_add_tail(&frame->list, &lowpan_fragments);
-
- return frame;
-
-skb_err:
- kfree(frame);
-frame_err:
- return NULL;
-}
-
-static int process_data(struct sk_buff *skb)
+static int process_data(struct sk_buff *skb, const struct ieee802154_hdr *hdr)
{
u8 iphc0, iphc1;
- const struct ieee802154_addr *_saddr, *_daddr;
+ struct ieee802154_addr_sa sa, da;
+ void *sap, *dap;
raw_dump_table(__func__, "raw skb data dump", skb->data, skb->len);
/* at least two bytes will be used for the encoding */
@@ -267,108 +182,27 @@ static int process_data(struct sk_buff *skb)
if (lowpan_fetch_skb_u8(skb, &iphc0))
goto drop;
- /* fragments assembling */
- switch (iphc0 & LOWPAN_DISPATCH_MASK) {
- case LOWPAN_DISPATCH_FRAG1:
- case LOWPAN_DISPATCH_FRAGN:
- {
- struct lowpan_fragment *frame;
- /* slen stores the rightmost 8 bits of the 11 bits length */
- u8 slen, offset = 0;
- u16 len, tag;
- bool found = false;
-
- if (lowpan_fetch_skb_u8(skb, &slen) || /* frame length */
- lowpan_fetch_skb_u16(skb, &tag)) /* fragment tag */
- goto drop;
-
- /* adds the 3 MSB to the 8 LSB to retrieve the 11 bits length */
- len = ((iphc0 & 7) << 8) | slen;
-
- if ((iphc0 & LOWPAN_DISPATCH_MASK) == LOWPAN_DISPATCH_FRAG1) {
- pr_debug("%s received a FRAG1 packet (tag: %d, "
- "size of the entire IP packet: %d)",
- __func__, tag, len);
- } else { /* FRAGN */
- if (lowpan_fetch_skb_u8(skb, &offset))
- goto unlock_and_drop;
- pr_debug("%s received a FRAGN packet (tag: %d, "
- "size of the entire IP packet: %d, "
- "offset: %d)", __func__, tag, len, offset * 8);
- }
-
- /*
- * check if frame assembling with the same tag is
- * already in progress
- */
- spin_lock_bh(&flist_lock);
-
- list_for_each_entry(frame, &lowpan_fragments, list)
- if (frame->tag == tag) {
- found = true;
- break;
- }
-
- /* alloc new frame structure */
- if (!found) {
- pr_debug("%s first fragment received for tag %d, "
- "begin packet reassembly", __func__, tag);
- frame = lowpan_alloc_new_frame(skb, len, tag);
- if (!frame)
- goto unlock_and_drop;
- }
-
- /* if payload fits buffer, copy it */
- if (likely((offset * 8 + skb->len) <= frame->length))
- skb_copy_to_linear_data_offset(frame->skb, offset * 8,
- skb->data, skb->len);
- else
- goto unlock_and_drop;
-
- frame->bytes_rcv += skb->len;
-
- /* frame assembling complete */
- if ((frame->bytes_rcv == frame->length) &&
- frame->timer.expires > jiffies) {
- /* if timer haven't expired - first of all delete it */
- del_timer_sync(&frame->timer);
- list_del(&frame->list);
- spin_unlock_bh(&flist_lock);
-
- pr_debug("%s successfully reassembled fragment "
- "(tag %d)", __func__, tag);
-
- dev_kfree_skb(skb);
- skb = frame->skb;
- kfree(frame);
-
- if (lowpan_fetch_skb_u8(skb, &iphc0))
- goto drop;
-
- break;
- }
- spin_unlock_bh(&flist_lock);
-
- return kfree_skb(skb), 0;
- }
- default:
- break;
- }
-
if (lowpan_fetch_skb_u8(skb, &iphc1))
goto drop;
- _saddr = &mac_cb(skb)->sa;
- _daddr = &mac_cb(skb)->da;
+ ieee802154_addr_to_sa(&sa, &hdr->source);
+ ieee802154_addr_to_sa(&da, &hdr->dest);
+
+ if (sa.addr_type == IEEE802154_ADDR_SHORT)
+ sap = &sa.short_addr;
+ else
+ sap = &sa.hwaddr;
- return lowpan_process_data(skb, skb->dev, (u8 *)_saddr->hwaddr,
- _saddr->addr_type, IEEE802154_ADDR_LEN,
- (u8 *)_daddr->hwaddr, _daddr->addr_type,
- IEEE802154_ADDR_LEN, iphc0, iphc1,
- lowpan_give_skb_to_devices);
+ if (da.addr_type == IEEE802154_ADDR_SHORT)
+ dap = &da.short_addr;
+ else
+ dap = &da.hwaddr;
+
+ return lowpan_process_data(skb, skb->dev, sap, sa.addr_type,
+ IEEE802154_ADDR_LEN, dap, da.addr_type,
+ IEEE802154_ADDR_LEN, iphc0, iphc1,
+ lowpan_give_skb_to_devices);
-unlock_and_drop:
- spin_unlock_bh(&flist_lock);
drop:
kfree_skb(skb);
return -EINVAL;
@@ -389,7 +223,7 @@ static int lowpan_set_address(struct net_device *dev, void *p)
static int
lowpan_fragment_xmit(struct sk_buff *skb, u8 *head,
- int mlen, int plen, int offset, int type)
+ int mlen, int plen, int offset, int type)
{
struct sk_buff *frag;
int hlen;
@@ -425,51 +259,68 @@ lowpan_fragment_xmit(struct sk_buff *skb, u8 *head,
static int
lowpan_skb_fragmentation(struct sk_buff *skb, struct net_device *dev)
{
- int err, header_length, payload_length, tag, offset = 0;
+ int err;
+ u16 dgram_offset, dgram_size, payload_length, header_length,
+ lowpan_size, frag_plen, offset;
+ __be16 tag;
u8 head[5];
header_length = skb->mac_len;
payload_length = skb->len - header_length;
tag = lowpan_dev_info(dev)->fragment_tag++;
+ lowpan_size = skb_network_header_len(skb);
+ dgram_size = lowpan_uncompress_size(skb, &dgram_offset) -
+ header_length;
/* first fragment header */
- head[0] = LOWPAN_DISPATCH_FRAG1 | ((payload_length >> 8) & 0x7);
- head[1] = payload_length & 0xff;
- head[2] = tag >> 8;
- head[3] = tag & 0xff;
+ head[0] = LOWPAN_DISPATCH_FRAG1 | ((dgram_size >> 8) & 0x7);
+ head[1] = dgram_size & 0xff;
+ memcpy(head + 2, &tag, sizeof(tag));
- err = lowpan_fragment_xmit(skb, head, header_length, LOWPAN_FRAG_SIZE,
- 0, LOWPAN_DISPATCH_FRAG1);
+ /* calc the nearest payload length(divided to 8) for first fragment
+ * which fits into a IEEE802154_MTU
+ */
+ frag_plen = round_down(IEEE802154_MTU - header_length -
+ LOWPAN_FRAG1_HEAD_SIZE - lowpan_size -
+ IEEE802154_MFR_SIZE, 8);
+ err = lowpan_fragment_xmit(skb, head, header_length,
+ frag_plen + lowpan_size, 0,
+ LOWPAN_DISPATCH_FRAG1);
if (err) {
pr_debug("%s unable to send FRAG1 packet (tag: %d)",
__func__, tag);
goto exit;
}
- offset = LOWPAN_FRAG_SIZE;
+ offset = lowpan_size + frag_plen;
+ dgram_offset += frag_plen;
/* next fragment header */
head[0] &= ~LOWPAN_DISPATCH_FRAG1;
head[0] |= LOWPAN_DISPATCH_FRAGN;
+ frag_plen = round_down(IEEE802154_MTU - header_length -
+ LOWPAN_FRAGN_HEAD_SIZE - IEEE802154_MFR_SIZE, 8);
+
while (payload_length - offset > 0) {
- int len = LOWPAN_FRAG_SIZE;
+ int len = frag_plen;
- head[4] = offset / 8;
+ head[4] = dgram_offset >> 3;
if (payload_length - offset < len)
len = payload_length - offset;
- err = lowpan_fragment_xmit(skb, head, header_length,
- len, offset, LOWPAN_DISPATCH_FRAGN);
+ err = lowpan_fragment_xmit(skb, head, header_length, len,
+ offset, LOWPAN_DISPATCH_FRAGN);
if (err) {
- pr_debug("%s unable to send a subsequent FRAGN packet "
- "(tag: %d, offset: %d", __func__, tag, offset);
+ pr_debug("%s unable to send a FRAGN packet. (tag: %d, offset: %d)\n",
+ __func__, tag, offset);
goto exit;
}
offset += len;
+ dgram_offset += len;
}
exit:
@@ -511,13 +362,13 @@ static struct wpan_phy *lowpan_get_phy(const struct net_device *dev)
return ieee802154_mlme_ops(real_dev)->get_phy(real_dev);
}
-static u16 lowpan_get_pan_id(const struct net_device *dev)
+static __le16 lowpan_get_pan_id(const struct net_device *dev)
{
struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
return ieee802154_mlme_ops(real_dev)->get_pan_id(real_dev);
}
-static u16 lowpan_get_short_addr(const struct net_device *dev)
+static __le16 lowpan_get_short_addr(const struct net_device *dev)
{
struct net_device *real_dev = lowpan_dev_info(dev)->real_dev;
return ieee802154_mlme_ops(real_dev)->get_short_addr(real_dev);
@@ -533,7 +384,27 @@ static struct header_ops lowpan_header_ops = {
.create = lowpan_header_create,
};
+static struct lock_class_key lowpan_tx_busylock;
+static struct lock_class_key lowpan_netdev_xmit_lock_key;
+
+static void lowpan_set_lockdep_class_one(struct net_device *dev,
+ struct netdev_queue *txq,
+ void *_unused)
+{
+ lockdep_set_class(&txq->_xmit_lock,
+ &lowpan_netdev_xmit_lock_key);
+}
+
+
+static int lowpan_dev_init(struct net_device *dev)
+{
+ netdev_for_each_tx_queue(dev, lowpan_set_lockdep_class_one, NULL);
+ dev->qdisc_tx_busylock = &lowpan_tx_busylock;
+ return 0;
+}
+
static const struct net_device_ops lowpan_netdev_ops = {
+ .ndo_init = lowpan_dev_init,
.ndo_start_xmit = lowpan_xmit,
.ndo_set_mac_address = lowpan_set_address,
};
@@ -576,45 +447,55 @@ static int lowpan_validate(struct nlattr *tb[], struct nlattr *data[])
static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)
{
- struct sk_buff *local_skb;
+ struct ieee802154_hdr hdr;
+ int ret;
- if (!netif_running(dev))
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
goto drop;
+ if (!netif_running(dev))
+ goto drop_skb;
+
if (dev->type != ARPHRD_IEEE802154)
- goto drop;
+ goto drop_skb;
+
+ if (ieee802154_hdr_peek_addrs(skb, &hdr) < 0)
+ goto drop_skb;
/* check that it's our buffer */
if (skb->data[0] == LOWPAN_DISPATCH_IPV6) {
- /* Copy the packet so that the IPv6 header is
- * properly aligned.
- */
- local_skb = skb_copy_expand(skb, NET_SKB_PAD - 1,
- skb_tailroom(skb), GFP_ATOMIC);
- if (!local_skb)
- goto drop;
-
- local_skb->protocol = htons(ETH_P_IPV6);
- local_skb->pkt_type = PACKET_HOST;
+ skb->protocol = htons(ETH_P_IPV6);
+ skb->pkt_type = PACKET_HOST;
/* Pull off the 1-byte of 6lowpan header. */
- skb_pull(local_skb, 1);
-
- lowpan_give_skb_to_devices(local_skb, NULL);
+ skb_pull(skb, 1);
- kfree_skb(local_skb);
- kfree_skb(skb);
+ ret = lowpan_give_skb_to_devices(skb, NULL);
+ if (ret == NET_RX_DROP)
+ goto drop;
} else {
switch (skb->data[0] & 0xe0) {
case LOWPAN_DISPATCH_IPHC: /* ipv6 datagram */
+ ret = process_data(skb, &hdr);
+ if (ret == NET_RX_DROP)
+ goto drop;
+ break;
case LOWPAN_DISPATCH_FRAG1: /* first fragment header */
+ ret = lowpan_frag_rcv(skb, LOWPAN_DISPATCH_FRAG1);
+ if (ret == 1) {
+ ret = process_data(skb, &hdr);
+ if (ret == NET_RX_DROP)
+ goto drop;
+ }
+ break;
case LOWPAN_DISPATCH_FRAGN: /* next fragments headers */
- local_skb = skb_clone(skb, GFP_ATOMIC);
- if (!local_skb)
- goto drop;
- process_data(local_skb);
-
- kfree_skb(skb);
+ ret = lowpan_frag_rcv(skb, LOWPAN_DISPATCH_FRAGN);
+ if (ret == 1) {
+ ret = process_data(skb, &hdr);
+ if (ret == NET_RX_DROP)
+ goto drop;
+ }
break;
default:
break;
@@ -622,9 +503,9 @@ static int lowpan_rcv(struct sk_buff *skb, struct net_device *dev,
}
return NET_RX_SUCCESS;
-
-drop:
+drop_skb:
kfree_skb(skb);
+drop:
return NET_RX_DROP;
}
@@ -648,10 +529,9 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev,
}
lowpan_dev_info(dev)->real_dev = real_dev;
- lowpan_dev_info(dev)->fragment_tag = 0;
mutex_init(&lowpan_dev_info(dev)->dev_list_mtx);
- entry = kzalloc(sizeof(struct lowpan_dev_record), GFP_KERNEL);
+ entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (!entry) {
dev_put(real_dev);
lowpan_dev_info(dev)->real_dev = NULL;
@@ -744,7 +624,7 @@ static struct notifier_block lowpan_dev_notifier = {
};
static struct packet_type lowpan_packet_type = {
- .type = __constant_htons(ETH_P_IEEE802154),
+ .type = htons(ETH_P_IEEE802154),
.func = lowpan_rcv,
};
@@ -752,43 +632,40 @@ static int __init lowpan_init_module(void)
{
int err = 0;
- err = lowpan_netlink_init();
+ err = lowpan_net_frag_init();
if (err < 0)
goto out;
+ err = lowpan_netlink_init();
+ if (err < 0)
+ goto out_frag;
+
dev_add_pack(&lowpan_packet_type);
err = register_netdevice_notifier(&lowpan_dev_notifier);
- if (err < 0) {
- dev_remove_pack(&lowpan_packet_type);
- lowpan_netlink_fini();
- }
+ if (err < 0)
+ goto out_pack;
+
+ return 0;
+
+out_pack:
+ dev_remove_pack(&lowpan_packet_type);
+ lowpan_netlink_fini();
+out_frag:
+ lowpan_net_frag_exit();
out:
return err;
}
static void __exit lowpan_cleanup_module(void)
{
- struct lowpan_fragment *frame, *tframe;
-
lowpan_netlink_fini();
dev_remove_pack(&lowpan_packet_type);
- unregister_netdevice_notifier(&lowpan_dev_notifier);
+ lowpan_net_frag_exit();
- /* Now 6lowpan packet_type is removed, so no new fragments are
- * expected on RX, therefore that's the time to clean incomplete
- * fragments.
- */
- spin_lock_bh(&flist_lock);
- list_for_each_entry_safe(frame, tframe, &lowpan_fragments, list) {
- del_timer_sync(&frame->timer);
- list_del(&frame->list);
- dev_kfree_skb(frame->skb);
- kfree(frame);
- }
- spin_unlock_bh(&flist_lock);
+ unregister_netdevice_notifier(&lowpan_dev_notifier);
}
module_init(lowpan_init_module);
diff --git a/net/ieee802154/Kconfig b/net/ieee802154/Kconfig
index 9c9879d5ea64..8af1330b3137 100644
--- a/net/ieee802154/Kconfig
+++ b/net/ieee802154/Kconfig
@@ -15,7 +15,7 @@ config IEEE802154_6LOWPAN
depends on IEEE802154 && IPV6
select 6LOWPAN_IPHC
---help---
- IPv6 compression over IEEE 802.15.4.
+ IPv6 compression over IEEE 802.15.4.
config 6LOWPAN_IPHC
tristate
diff --git a/net/ieee802154/Makefile b/net/ieee802154/Makefile
index e8f05885ced6..bf1b51497a41 100644
--- a/net/ieee802154/Makefile
+++ b/net/ieee802154/Makefile
@@ -2,5 +2,9 @@ obj-$(CONFIG_IEEE802154) += ieee802154.o af_802154.o
obj-$(CONFIG_IEEE802154_6LOWPAN) += 6lowpan.o
obj-$(CONFIG_6LOWPAN_IPHC) += 6lowpan_iphc.o
-ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o
+6lowpan-y := 6lowpan_rtnl.o reassembly.o
+ieee802154-y := netlink.o nl-mac.o nl-phy.o nl_policy.o wpan-class.o \
+ header_ops.o
af_802154-y := af_ieee802154.o raw.o dgram.o
+
+ccflags-y += -D__CHECK_ENDIAN__
diff --git a/net/ieee802154/af802154.h b/net/ieee802154/af802154.h
index b1ec52537522..8330a09bfc95 100644
--- a/net/ieee802154/af802154.h
+++ b/net/ieee802154/af802154.h
@@ -25,12 +25,13 @@
#define AF802154_H
struct sk_buff;
-struct net_devce;
+struct net_device;
+struct ieee802154_addr;
extern struct proto ieee802154_raw_prot;
extern struct proto ieee802154_dgram_prot;
void ieee802154_raw_deliver(struct net_device *dev, struct sk_buff *skb);
int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb);
struct net_device *ieee802154_get_dev(struct net *net,
- struct ieee802154_addr *addr);
+ const struct ieee802154_addr *addr);
#endif
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index 40e606f3788f..351d9a94ec2f 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -43,25 +43,27 @@
/*
* Utility function for families
*/
-struct net_device *ieee802154_get_dev(struct net *net,
- struct ieee802154_addr *addr)
+struct net_device*
+ieee802154_get_dev(struct net *net, const struct ieee802154_addr *addr)
{
struct net_device *dev = NULL;
struct net_device *tmp;
- u16 pan_id, short_addr;
+ __le16 pan_id, short_addr;
+ u8 hwaddr[IEEE802154_ADDR_LEN];
- switch (addr->addr_type) {
+ switch (addr->mode) {
case IEEE802154_ADDR_LONG:
+ ieee802154_devaddr_to_raw(hwaddr, addr->extended_addr);
rcu_read_lock();
- dev = dev_getbyhwaddr_rcu(net, ARPHRD_IEEE802154, addr->hwaddr);
+ dev = dev_getbyhwaddr_rcu(net, ARPHRD_IEEE802154, hwaddr);
if (dev)
dev_hold(dev);
rcu_read_unlock();
break;
case IEEE802154_ADDR_SHORT:
- if (addr->pan_id == 0xffff ||
- addr->short_addr == IEEE802154_ADDR_UNDEF ||
- addr->short_addr == 0xffff)
+ if (addr->pan_id == cpu_to_le16(IEEE802154_PANID_BROADCAST) ||
+ addr->short_addr == cpu_to_le16(IEEE802154_ADDR_UNDEF) ||
+ addr->short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST))
break;
rtnl_lock();
@@ -86,7 +88,7 @@ struct net_device *ieee802154_get_dev(struct net *net,
break;
default:
pr_warning("Unsupported ieee802154 address type: %d\n",
- addr->addr_type);
+ addr->mode);
break;
}
@@ -326,7 +328,7 @@ drop:
static struct packet_type ieee802154_packet_type = {
- .type = __constant_htons(ETH_P_IEEE802154),
+ .type = htons(ETH_P_IEEE802154),
.func = ieee802154_rcv,
};
diff --git a/net/ieee802154/dgram.c b/net/ieee802154/dgram.c
index 1846c1fe0d06..786437bc0c08 100644
--- a/net/ieee802154/dgram.c
+++ b/net/ieee802154/dgram.c
@@ -73,10 +73,10 @@ static int dgram_init(struct sock *sk)
{
struct dgram_sock *ro = dgram_sk(sk);
- ro->dst_addr.addr_type = IEEE802154_ADDR_LONG;
- ro->dst_addr.pan_id = 0xffff;
+ ro->dst_addr.mode = IEEE802154_ADDR_LONG;
+ ro->dst_addr.pan_id = cpu_to_le16(IEEE802154_PANID_BROADCAST);
ro->want_ack = 1;
- memset(&ro->dst_addr.hwaddr, 0xff, sizeof(ro->dst_addr.hwaddr));
+ memset(&ro->dst_addr.extended_addr, 0xff, IEEE802154_ADDR_LEN);
return 0;
}
@@ -88,6 +88,7 @@ static void dgram_close(struct sock *sk, long timeout)
static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
{
struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
+ struct ieee802154_addr haddr;
struct dgram_sock *ro = dgram_sk(sk);
int err = -EINVAL;
struct net_device *dev;
@@ -102,7 +103,8 @@ static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
if (addr->family != AF_IEEE802154)
goto out;
- dev = ieee802154_get_dev(sock_net(sk), &addr->addr);
+ ieee802154_addr_from_sa(&haddr, &addr->addr);
+ dev = ieee802154_get_dev(sock_net(sk), &haddr);
if (!dev) {
err = -ENODEV;
goto out;
@@ -113,7 +115,7 @@ static int dgram_bind(struct sock *sk, struct sockaddr *uaddr, int len)
goto out_put;
}
- memcpy(&ro->src_addr, &addr->addr, sizeof(struct ieee802154_addr));
+ ro->src_addr = haddr;
ro->bound = 1;
err = 0;
@@ -149,8 +151,7 @@ static int dgram_ioctl(struct sock *sk, int cmd, unsigned long arg)
* of this packet since that is all
* that will be read.
*/
- /* FIXME: parse the header for more correct value */
- amount = skb->len - (3+8+8);
+ amount = skb->len - ieee802154_hdr_length(skb);
}
spin_unlock_bh(&sk->sk_receive_queue.lock);
return put_user(amount, (int __user *)arg);
@@ -181,7 +182,7 @@ static int dgram_connect(struct sock *sk, struct sockaddr *uaddr,
goto out;
}
- memcpy(&ro->dst_addr, &addr->addr, sizeof(struct ieee802154_addr));
+ ieee802154_addr_from_sa(&ro->dst_addr, &addr->addr);
out:
release_sock(sk);
@@ -194,8 +195,8 @@ static int dgram_disconnect(struct sock *sk, int flags)
lock_sock(sk);
- ro->dst_addr.addr_type = IEEE802154_ADDR_LONG;
- memset(&ro->dst_addr.hwaddr, 0xff, sizeof(ro->dst_addr.hwaddr));
+ ro->dst_addr.mode = IEEE802154_ADDR_LONG;
+ memset(&ro->dst_addr.extended_addr, 0xff, IEEE802154_ADDR_LEN);
release_sock(sk);
@@ -232,7 +233,7 @@ static int dgram_sendmsg(struct kiocb *iocb, struct sock *sk,
if (size > mtu) {
pr_debug("size = %Zu, mtu = %u\n", size, mtu);
- err = -EINVAL;
+ err = -EMSGSIZE;
goto out_dev;
}
@@ -312,7 +313,7 @@ static int dgram_recvmsg(struct kiocb *iocb, struct sock *sk,
if (saddr) {
saddr->family = AF_IEEE802154;
- saddr->addr = mac_cb(skb)->sa;
+ ieee802154_addr_to_sa(&saddr->addr, &mac_cb(skb)->source);
*addr_len = sizeof(*saddr);
}
@@ -328,6 +329,10 @@ out:
static int dgram_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return NET_RX_DROP;
+
if (sock_queue_rcv_skb(sk, skb) < 0) {
kfree_skb(skb);
return NET_RX_DROP;
@@ -336,40 +341,43 @@ static int dgram_rcv_skb(struct sock *sk, struct sk_buff *skb)
return NET_RX_SUCCESS;
}
-static inline int ieee802154_match_sock(u8 *hw_addr, u16 pan_id,
- u16 short_addr, struct dgram_sock *ro)
+static inline bool
+ieee802154_match_sock(__le64 hw_addr, __le16 pan_id, __le16 short_addr,
+ struct dgram_sock *ro)
{
if (!ro->bound)
- return 1;
+ return true;
- if (ro->src_addr.addr_type == IEEE802154_ADDR_LONG &&
- !memcmp(ro->src_addr.hwaddr, hw_addr, IEEE802154_ADDR_LEN))
- return 1;
+ if (ro->src_addr.mode == IEEE802154_ADDR_LONG &&
+ hw_addr == ro->src_addr.extended_addr)
+ return true;
- if (ro->src_addr.addr_type == IEEE802154_ADDR_SHORT &&
- pan_id == ro->src_addr.pan_id &&
- short_addr == ro->src_addr.short_addr)
- return 1;
+ if (ro->src_addr.mode == IEEE802154_ADDR_SHORT &&
+ pan_id == ro->src_addr.pan_id &&
+ short_addr == ro->src_addr.short_addr)
+ return true;
- return 0;
+ return false;
}
int ieee802154_dgram_deliver(struct net_device *dev, struct sk_buff *skb)
{
struct sock *sk, *prev = NULL;
int ret = NET_RX_SUCCESS;
- u16 pan_id, short_addr;
+ __le16 pan_id, short_addr;
+ __le64 hw_addr;
/* Data frame processing */
BUG_ON(dev->type != ARPHRD_IEEE802154);
pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
short_addr = ieee802154_mlme_ops(dev)->get_short_addr(dev);
+ hw_addr = ieee802154_devaddr_from_raw(dev->dev_addr);
read_lock(&dgram_lock);
sk_for_each(sk, &dgram_head) {
- if (ieee802154_match_sock(dev->dev_addr, pan_id, short_addr,
- dgram_sk(sk))) {
+ if (ieee802154_match_sock(hw_addr, pan_id, short_addr,
+ dgram_sk(sk))) {
if (prev) {
struct sk_buff *clone;
clone = skb_clone(skb, GFP_ATOMIC);
diff --git a/net/ieee802154/header_ops.c b/net/ieee802154/header_ops.c
new file mode 100644
index 000000000000..bed42a48408c
--- /dev/null
+++ b/net/ieee802154/header_ops.c
@@ -0,0 +1,287 @@
+/*
+ * Copyright (C) 2014 Fraunhofer ITWM
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Written by:
+ * Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
+ */
+
+#include <net/mac802154.h>
+#include <net/ieee802154.h>
+#include <net/ieee802154_netdev.h>
+
+static int
+ieee802154_hdr_push_addr(u8 *buf, const struct ieee802154_addr *addr,
+ bool omit_pan)
+{
+ int pos = 0;
+
+ if (addr->mode == IEEE802154_ADDR_NONE)
+ return 0;
+
+ if (!omit_pan) {
+ memcpy(buf + pos, &addr->pan_id, 2);
+ pos += 2;
+ }
+
+ switch (addr->mode) {
+ case IEEE802154_ADDR_SHORT:
+ memcpy(buf + pos, &addr->short_addr, 2);
+ pos += 2;
+ break;
+
+ case IEEE802154_ADDR_LONG:
+ memcpy(buf + pos, &addr->extended_addr, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return pos;
+}
+
+static int
+ieee802154_hdr_push_sechdr(u8 *buf, const struct ieee802154_sechdr *hdr)
+{
+ int pos = 5;
+
+ memcpy(buf, hdr, 1);
+ memcpy(buf + 1, &hdr->frame_counter, 4);
+
+ switch (hdr->key_id_mode) {
+ case IEEE802154_SCF_KEY_IMPLICIT:
+ return pos;
+
+ case IEEE802154_SCF_KEY_INDEX:
+ break;
+
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ memcpy(buf + pos, &hdr->short_src, 4);
+ pos += 4;
+ break;
+
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ memcpy(buf + pos, &hdr->extended_src, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ break;
+ }
+
+ buf[pos++] = hdr->key_id;
+
+ return pos;
+}
+
+int
+ieee802154_hdr_push(struct sk_buff *skb, const struct ieee802154_hdr *hdr)
+{
+ u8 buf[MAC802154_FRAME_HARD_HEADER_LEN];
+ int pos = 2;
+ int rc;
+ struct ieee802154_hdr_fc fc = hdr->fc;
+
+ buf[pos++] = hdr->seq;
+
+ fc.dest_addr_mode = hdr->dest.mode;
+
+ rc = ieee802154_hdr_push_addr(buf + pos, &hdr->dest, false);
+ if (rc < 0)
+ return -EINVAL;
+ pos += rc;
+
+ fc.source_addr_mode = hdr->source.mode;
+
+ if (hdr->source.pan_id == hdr->dest.pan_id &&
+ hdr->dest.mode != IEEE802154_ADDR_NONE)
+ fc.intra_pan = true;
+
+ rc = ieee802154_hdr_push_addr(buf + pos, &hdr->source, fc.intra_pan);
+ if (rc < 0)
+ return -EINVAL;
+ pos += rc;
+
+ if (fc.security_enabled) {
+ fc.version = 1;
+
+ rc = ieee802154_hdr_push_sechdr(buf + pos, &hdr->sec);
+ if (rc < 0)
+ return -EINVAL;
+
+ pos += rc;
+ }
+
+ memcpy(buf, &fc, 2);
+
+ memcpy(skb_push(skb, pos), buf, pos);
+
+ return pos;
+}
+EXPORT_SYMBOL_GPL(ieee802154_hdr_push);
+
+static int
+ieee802154_hdr_get_addr(const u8 *buf, int mode, bool omit_pan,
+ struct ieee802154_addr *addr)
+{
+ int pos = 0;
+
+ addr->mode = mode;
+
+ if (mode == IEEE802154_ADDR_NONE)
+ return 0;
+
+ if (!omit_pan) {
+ memcpy(&addr->pan_id, buf + pos, 2);
+ pos += 2;
+ }
+
+ if (mode == IEEE802154_ADDR_SHORT) {
+ memcpy(&addr->short_addr, buf + pos, 2);
+ return pos + 2;
+ } else {
+ memcpy(&addr->extended_addr, buf + pos, IEEE802154_ADDR_LEN);
+ return pos + IEEE802154_ADDR_LEN;
+ }
+}
+
+static int ieee802154_hdr_addr_len(int mode, bool omit_pan)
+{
+ int pan_len = omit_pan ? 0 : 2;
+
+ switch (mode) {
+ case IEEE802154_ADDR_NONE: return 0;
+ case IEEE802154_ADDR_SHORT: return 2 + pan_len;
+ case IEEE802154_ADDR_LONG: return IEEE802154_ADDR_LEN + pan_len;
+ default: return -EINVAL;
+ }
+}
+
+static int
+ieee802154_hdr_get_sechdr(const u8 *buf, struct ieee802154_sechdr *hdr)
+{
+ int pos = 5;
+
+ memcpy(hdr, buf, 1);
+ memcpy(&hdr->frame_counter, buf + 1, 4);
+
+ switch (hdr->key_id_mode) {
+ case IEEE802154_SCF_KEY_IMPLICIT:
+ return pos;
+
+ case IEEE802154_SCF_KEY_INDEX:
+ break;
+
+ case IEEE802154_SCF_KEY_SHORT_INDEX:
+ memcpy(&hdr->short_src, buf + pos, 4);
+ pos += 4;
+ break;
+
+ case IEEE802154_SCF_KEY_HW_INDEX:
+ memcpy(&hdr->extended_src, buf + pos, IEEE802154_ADDR_LEN);
+ pos += IEEE802154_ADDR_LEN;
+ break;
+ }
+
+ hdr->key_id = buf[pos++];
+
+ return pos;
+}
+
+static int ieee802154_hdr_sechdr_len(u8 sc)
+{
+ switch (IEEE802154_SCF_KEY_ID_MODE(sc)) {
+ case IEEE802154_SCF_KEY_IMPLICIT: return 5;
+ case IEEE802154_SCF_KEY_INDEX: return 6;
+ case IEEE802154_SCF_KEY_SHORT_INDEX: return 10;
+ case IEEE802154_SCF_KEY_HW_INDEX: return 14;
+ default: return -EINVAL;
+ }
+}
+
+static int ieee802154_hdr_minlen(const struct ieee802154_hdr *hdr)
+{
+ int dlen, slen;
+
+ dlen = ieee802154_hdr_addr_len(hdr->fc.dest_addr_mode, false);
+ slen = ieee802154_hdr_addr_len(hdr->fc.source_addr_mode,
+ hdr->fc.intra_pan);
+
+ if (slen < 0 || dlen < 0)
+ return -EINVAL;
+
+ return 3 + dlen + slen + hdr->fc.security_enabled;
+}
+
+static int
+ieee802154_hdr_get_addrs(const u8 *buf, struct ieee802154_hdr *hdr)
+{
+ int pos = 0;
+
+ pos += ieee802154_hdr_get_addr(buf + pos, hdr->fc.dest_addr_mode,
+ false, &hdr->dest);
+ pos += ieee802154_hdr_get_addr(buf + pos, hdr->fc.source_addr_mode,
+ hdr->fc.intra_pan, &hdr->source);
+
+ if (hdr->fc.intra_pan)
+ hdr->source.pan_id = hdr->dest.pan_id;
+
+ return pos;
+}
+
+int
+ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr)
+{
+ int pos = 3, rc;
+
+ if (!pskb_may_pull(skb, 3))
+ return -EINVAL;
+
+ memcpy(hdr, skb->data, 3);
+
+ rc = ieee802154_hdr_minlen(hdr);
+ if (rc < 0 || !pskb_may_pull(skb, rc))
+ return -EINVAL;
+
+ pos += ieee802154_hdr_get_addrs(skb->data + pos, hdr);
+
+ if (hdr->fc.security_enabled) {
+ int want = pos + ieee802154_hdr_sechdr_len(skb->data[pos]);
+
+ if (!pskb_may_pull(skb, want))
+ return -EINVAL;
+
+ pos += ieee802154_hdr_get_sechdr(skb->data + pos, &hdr->sec);
+ }
+
+ skb_pull(skb, pos);
+ return pos;
+}
+EXPORT_SYMBOL_GPL(ieee802154_hdr_pull);
+
+int
+ieee802154_hdr_peek_addrs(const struct sk_buff *skb, struct ieee802154_hdr *hdr)
+{
+ const u8 *buf = skb_mac_header(skb);
+ int pos = 3, rc;
+
+ if (buf + 3 > skb_tail_pointer(skb))
+ return -EINVAL;
+
+ memcpy(hdr, buf, 3);
+
+ rc = ieee802154_hdr_minlen(hdr);
+ if (rc < 0 || buf + rc > skb_tail_pointer(skb))
+ return -EINVAL;
+
+ pos += ieee802154_hdr_get_addrs(buf + pos, hdr);
+ return pos;
+}
+EXPORT_SYMBOL_GPL(ieee802154_hdr_peek_addrs);
diff --git a/net/ieee802154/ieee802154.h b/net/ieee802154/ieee802154.h
index cee4425b9956..6693a5cf01ce 100644
--- a/net/ieee802154/ieee802154.h
+++ b/net/ieee802154/ieee802154.h
@@ -66,5 +66,6 @@ int ieee802154_scan_req(struct sk_buff *skb, struct genl_info *info);
int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info);
int ieee802154_list_iface(struct sk_buff *skb, struct genl_info *info);
int ieee802154_dump_iface(struct sk_buff *skb, struct netlink_callback *cb);
+int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info);
#endif
diff --git a/net/ieee802154/netlink.c b/net/ieee802154/netlink.c
index 43f1b2bf469f..04b20589d97a 100644
--- a/net/ieee802154/netlink.c
+++ b/net/ieee802154/netlink.c
@@ -123,6 +123,7 @@ static const struct genl_ops ieee8021154_ops[] = {
IEEE802154_OP(IEEE802154_START_REQ, ieee802154_start_req),
IEEE802154_DUMP(IEEE802154_LIST_IFACE, ieee802154_list_iface,
ieee802154_dump_iface),
+ IEEE802154_OP(IEEE802154_SET_MACPARAMS, ieee802154_set_macparams),
};
static const struct genl_multicast_group ieee802154_mcgrps[] = {
diff --git a/net/ieee802154/nl-mac.c b/net/ieee802154/nl-mac.c
index ba5c1e002f37..5d285498c0f6 100644
--- a/net/ieee802154/nl-mac.c
+++ b/net/ieee802154/nl-mac.c
@@ -39,6 +39,26 @@
#include "ieee802154.h"
+static int nla_put_hwaddr(struct sk_buff *msg, int type, __le64 hwaddr)
+{
+ return nla_put_u64(msg, type, swab64((__force u64)hwaddr));
+}
+
+static __le64 nla_get_hwaddr(const struct nlattr *nla)
+{
+ return ieee802154_devaddr_from_raw(nla_data(nla));
+}
+
+static int nla_put_shortaddr(struct sk_buff *msg, int type, __le16 addr)
+{
+ return nla_put_u16(msg, type, le16_to_cpu(addr));
+}
+
+static __le16 nla_get_shortaddr(const struct nlattr *nla)
+{
+ return cpu_to_le16(nla_get_u16(nla));
+}
+
int ieee802154_nl_assoc_indic(struct net_device *dev,
struct ieee802154_addr *addr, u8 cap)
{
@@ -46,7 +66,7 @@ int ieee802154_nl_assoc_indic(struct net_device *dev,
pr_debug("%s\n", __func__);
- if (addr->addr_type != IEEE802154_ADDR_LONG) {
+ if (addr->mode != IEEE802154_ADDR_LONG) {
pr_err("%s: received non-long source address!\n", __func__);
return -EINVAL;
}
@@ -59,8 +79,8 @@ int ieee802154_nl_assoc_indic(struct net_device *dev,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
- addr->hwaddr) ||
+ nla_put_hwaddr(msg, IEEE802154_ATTR_SRC_HW_ADDR,
+ addr->extended_addr) ||
nla_put_u8(msg, IEEE802154_ATTR_CAPABILITY, cap))
goto nla_put_failure;
@@ -72,7 +92,7 @@ nla_put_failure:
}
EXPORT_SYMBOL(ieee802154_nl_assoc_indic);
-int ieee802154_nl_assoc_confirm(struct net_device *dev, u16 short_addr,
+int ieee802154_nl_assoc_confirm(struct net_device *dev, __le16 short_addr,
u8 status)
{
struct sk_buff *msg;
@@ -87,7 +107,7 @@ int ieee802154_nl_assoc_confirm(struct net_device *dev, u16 short_addr,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
+ nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
nla_put_u8(msg, IEEE802154_ATTR_STATUS, status))
goto nla_put_failure;
return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
@@ -114,13 +134,13 @@ int ieee802154_nl_disassoc_indic(struct net_device *dev,
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr))
goto nla_put_failure;
- if (addr->addr_type == IEEE802154_ADDR_LONG) {
- if (nla_put(msg, IEEE802154_ATTR_SRC_HW_ADDR, IEEE802154_ADDR_LEN,
- addr->hwaddr))
+ if (addr->mode == IEEE802154_ADDR_LONG) {
+ if (nla_put_hwaddr(msg, IEEE802154_ATTR_SRC_HW_ADDR,
+ addr->extended_addr))
goto nla_put_failure;
} else {
- if (nla_put_u16(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
- addr->short_addr))
+ if (nla_put_shortaddr(msg, IEEE802154_ATTR_SRC_SHORT_ADDR,
+ addr->short_addr))
goto nla_put_failure;
}
if (nla_put_u8(msg, IEEE802154_ATTR_REASON, reason))
@@ -157,8 +177,8 @@ nla_put_failure:
}
EXPORT_SYMBOL(ieee802154_nl_disassoc_confirm);
-int ieee802154_nl_beacon_indic(struct net_device *dev,
- u16 panid, u16 coord_addr)
+int ieee802154_nl_beacon_indic(struct net_device *dev, __le16 panid,
+ __le16 coord_addr)
{
struct sk_buff *msg;
@@ -172,8 +192,9 @@ int ieee802154_nl_beacon_indic(struct net_device *dev,
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_COORD_SHORT_ADDR, coord_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_COORD_PAN_ID, panid))
+ nla_put_shortaddr(msg, IEEE802154_ATTR_COORD_SHORT_ADDR,
+ coord_addr) ||
+ nla_put_shortaddr(msg, IEEE802154_ATTR_COORD_PAN_ID, panid))
goto nla_put_failure;
return ieee802154_nl_mcast(msg, IEEE802154_COORD_MCGRP);
@@ -243,6 +264,8 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
{
void *hdr;
struct wpan_phy *phy;
+ struct ieee802154_mlme_ops *ops;
+ __le16 short_addr, pan_id;
pr_debug("%s\n", __func__);
@@ -251,19 +274,45 @@ static int ieee802154_nl_fill_iface(struct sk_buff *msg, u32 portid,
if (!hdr)
goto out;
- phy = ieee802154_mlme_ops(dev)->get_phy(dev);
+ ops = ieee802154_mlme_ops(dev);
+ phy = ops->get_phy(dev);
BUG_ON(!phy);
+ short_addr = ops->get_short_addr(dev);
+ pan_id = ops->get_pan_id(dev);
+
if (nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name) ||
nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
nla_put_u32(msg, IEEE802154_ATTR_DEV_INDEX, dev->ifindex) ||
nla_put(msg, IEEE802154_ATTR_HW_ADDR, IEEE802154_ADDR_LEN,
dev->dev_addr) ||
- nla_put_u16(msg, IEEE802154_ATTR_SHORT_ADDR,
- ieee802154_mlme_ops(dev)->get_short_addr(dev)) ||
- nla_put_u16(msg, IEEE802154_ATTR_PAN_ID,
- ieee802154_mlme_ops(dev)->get_pan_id(dev)))
+ nla_put_shortaddr(msg, IEEE802154_ATTR_SHORT_ADDR, short_addr) ||
+ nla_put_shortaddr(msg, IEEE802154_ATTR_PAN_ID, pan_id))
goto nla_put_failure;
+
+ if (ops->get_mac_params) {
+ struct ieee802154_mac_params params;
+
+ ops->get_mac_params(dev, &params);
+
+ if (nla_put_s8(msg, IEEE802154_ATTR_TXPOWER,
+ params.transmit_power) ||
+ nla_put_u8(msg, IEEE802154_ATTR_LBT_ENABLED, params.lbt) ||
+ nla_put_u8(msg, IEEE802154_ATTR_CCA_MODE,
+ params.cca_mode) ||
+ nla_put_s32(msg, IEEE802154_ATTR_CCA_ED_LEVEL,
+ params.cca_ed_level) ||
+ nla_put_u8(msg, IEEE802154_ATTR_CSMA_RETRIES,
+ params.csma_retries) ||
+ nla_put_u8(msg, IEEE802154_ATTR_CSMA_MIN_BE,
+ params.min_be) ||
+ nla_put_u8(msg, IEEE802154_ATTR_CSMA_MAX_BE,
+ params.max_be) ||
+ nla_put_s8(msg, IEEE802154_ATTR_FRAME_RETRIES,
+ params.frame_retries))
+ goto nla_put_failure;
+ }
+
wpan_phy_put(phy);
return genlmsg_end(msg, hdr);
@@ -322,16 +371,16 @@ int ieee802154_associate_req(struct sk_buff *skb, struct genl_info *info)
goto out;
if (info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]) {
- addr.addr_type = IEEE802154_ADDR_LONG;
- nla_memcpy(addr.hwaddr,
- info->attrs[IEEE802154_ATTR_COORD_HW_ADDR],
- IEEE802154_ADDR_LEN);
+ addr.mode = IEEE802154_ADDR_LONG;
+ addr.extended_addr = nla_get_hwaddr(
+ info->attrs[IEEE802154_ATTR_COORD_HW_ADDR]);
} else {
- addr.addr_type = IEEE802154_ADDR_SHORT;
- addr.short_addr = nla_get_u16(
+ addr.mode = IEEE802154_ADDR_SHORT;
+ addr.short_addr = nla_get_shortaddr(
info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
}
- addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
+ addr.pan_id = nla_get_shortaddr(
+ info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
if (info->attrs[IEEE802154_ATTR_PAGE])
page = nla_get_u8(info->attrs[IEEE802154_ATTR_PAGE]);
@@ -365,14 +414,13 @@ int ieee802154_associate_resp(struct sk_buff *skb, struct genl_info *info)
if (!ieee802154_mlme_ops(dev)->assoc_resp)
goto out;
- addr.addr_type = IEEE802154_ADDR_LONG;
- nla_memcpy(addr.hwaddr, info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
- IEEE802154_ADDR_LEN);
+ addr.mode = IEEE802154_ADDR_LONG;
+ addr.extended_addr = nla_get_hwaddr(
+ info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
-
ret = ieee802154_mlme_ops(dev)->assoc_resp(dev, &addr,
- nla_get_u16(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
+ nla_get_shortaddr(info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]),
nla_get_u8(info->attrs[IEEE802154_ATTR_STATUS]));
out:
@@ -398,13 +446,12 @@ int ieee802154_disassociate_req(struct sk_buff *skb, struct genl_info *info)
goto out;
if (info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]) {
- addr.addr_type = IEEE802154_ADDR_LONG;
- nla_memcpy(addr.hwaddr,
- info->attrs[IEEE802154_ATTR_DEST_HW_ADDR],
- IEEE802154_ADDR_LEN);
+ addr.mode = IEEE802154_ADDR_LONG;
+ addr.extended_addr = nla_get_hwaddr(
+ info->attrs[IEEE802154_ATTR_DEST_HW_ADDR]);
} else {
- addr.addr_type = IEEE802154_ADDR_SHORT;
- addr.short_addr = nla_get_u16(
+ addr.mode = IEEE802154_ADDR_SHORT;
+ addr.short_addr = nla_get_shortaddr(
info->attrs[IEEE802154_ATTR_DEST_SHORT_ADDR]);
}
addr.pan_id = ieee802154_mlme_ops(dev)->get_pan_id(dev);
@@ -449,10 +496,11 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
if (!ieee802154_mlme_ops(dev)->start_req)
goto out;
- addr.addr_type = IEEE802154_ADDR_SHORT;
- addr.short_addr = nla_get_u16(
+ addr.mode = IEEE802154_ADDR_SHORT;
+ addr.short_addr = nla_get_shortaddr(
info->attrs[IEEE802154_ATTR_COORD_SHORT_ADDR]);
- addr.pan_id = nla_get_u16(info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
+ addr.pan_id = nla_get_shortaddr(
+ info->attrs[IEEE802154_ATTR_COORD_PAN_ID]);
channel = nla_get_u8(info->attrs[IEEE802154_ATTR_CHANNEL]);
bcn_ord = nla_get_u8(info->attrs[IEEE802154_ATTR_BCN_ORD]);
@@ -467,7 +515,7 @@ int ieee802154_start_req(struct sk_buff *skb, struct genl_info *info)
page = 0;
- if (addr.short_addr == IEEE802154_ADDR_BROADCAST) {
+ if (addr.short_addr == cpu_to_le16(IEEE802154_ADDR_BROADCAST)) {
ieee802154_nl_start_confirm(dev, IEEE802154_NO_SHORT_ADDRESS);
dev_put(dev);
return -EINVAL;
@@ -577,3 +625,93 @@ cont:
return skb->len;
}
+
+int ieee802154_set_macparams(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net_device *dev = NULL;
+ struct ieee802154_mlme_ops *ops;
+ struct ieee802154_mac_params params;
+ struct wpan_phy *phy;
+ int rc = -EINVAL;
+
+ pr_debug("%s\n", __func__);
+
+ dev = ieee802154_nl_get_dev(info);
+ if (!dev)
+ return -ENODEV;
+
+ ops = ieee802154_mlme_ops(dev);
+
+ if (!ops->get_mac_params || !ops->set_mac_params) {
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (netif_running(dev)) {
+ rc = -EBUSY;
+ goto out;
+ }
+
+ if (!info->attrs[IEEE802154_ATTR_LBT_ENABLED] &&
+ !info->attrs[IEEE802154_ATTR_CCA_MODE] &&
+ !info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL] &&
+ !info->attrs[IEEE802154_ATTR_CSMA_RETRIES] &&
+ !info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] &&
+ !info->attrs[IEEE802154_ATTR_CSMA_MAX_BE] &&
+ !info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
+ goto out;
+
+ phy = ops->get_phy(dev);
+
+ if ((!phy->set_lbt && info->attrs[IEEE802154_ATTR_LBT_ENABLED]) ||
+ (!phy->set_cca_mode && info->attrs[IEEE802154_ATTR_CCA_MODE]) ||
+ (!phy->set_cca_ed_level &&
+ info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]) ||
+ (!phy->set_csma_params &&
+ (info->attrs[IEEE802154_ATTR_CSMA_RETRIES] ||
+ info->attrs[IEEE802154_ATTR_CSMA_MIN_BE] ||
+ info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])) ||
+ (!phy->set_frame_retries &&
+ info->attrs[IEEE802154_ATTR_FRAME_RETRIES])) {
+ rc = -EOPNOTSUPP;
+ goto out_phy;
+ }
+
+ ops->get_mac_params(dev, &params);
+
+ if (info->attrs[IEEE802154_ATTR_TXPOWER])
+ params.transmit_power = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]);
+
+ if (info->attrs[IEEE802154_ATTR_LBT_ENABLED])
+ params.lbt = nla_get_u8(info->attrs[IEEE802154_ATTR_LBT_ENABLED]);
+
+ if (info->attrs[IEEE802154_ATTR_CCA_MODE])
+ params.cca_mode = nla_get_u8(info->attrs[IEEE802154_ATTR_CCA_MODE]);
+
+ if (info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL])
+ params.cca_ed_level = nla_get_s32(info->attrs[IEEE802154_ATTR_CCA_ED_LEVEL]);
+
+ if (info->attrs[IEEE802154_ATTR_CSMA_RETRIES])
+ params.csma_retries = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_RETRIES]);
+
+ if (info->attrs[IEEE802154_ATTR_CSMA_MIN_BE])
+ params.min_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MIN_BE]);
+
+ if (info->attrs[IEEE802154_ATTR_CSMA_MAX_BE])
+ params.max_be = nla_get_u8(info->attrs[IEEE802154_ATTR_CSMA_MAX_BE]);
+
+ if (info->attrs[IEEE802154_ATTR_FRAME_RETRIES])
+ params.frame_retries = nla_get_s8(info->attrs[IEEE802154_ATTR_FRAME_RETRIES]);
+
+ rc = ops->set_mac_params(dev, &params);
+
+ wpan_phy_put(phy);
+ dev_put(dev);
+ return rc;
+
+out_phy:
+ wpan_phy_put(phy);
+out:
+ dev_put(dev);
+ return rc;
+}
diff --git a/net/ieee802154/nl_policy.c b/net/ieee802154/nl_policy.c
index 6adda4d46f95..fd7be5e45cef 100644
--- a/net/ieee802154/nl_policy.c
+++ b/net/ieee802154/nl_policy.c
@@ -52,5 +52,15 @@ const struct nla_policy ieee802154_policy[IEEE802154_ATTR_MAX + 1] = {
[IEEE802154_ATTR_DURATION] = { .type = NLA_U8, },
[IEEE802154_ATTR_ED_LIST] = { .len = 27 },
[IEEE802154_ATTR_CHANNEL_PAGE_LIST] = { .len = 32 * 4, },
+
+ [IEEE802154_ATTR_TXPOWER] = { .type = NLA_S8, },
+ [IEEE802154_ATTR_LBT_ENABLED] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_CCA_MODE] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_CCA_ED_LEVEL] = { .type = NLA_S32, },
+ [IEEE802154_ATTR_CSMA_RETRIES] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_CSMA_MIN_BE] = { .type = NLA_U8, },
+ [IEEE802154_ATTR_CSMA_MAX_BE] = { .type = NLA_U8, },
+
+ [IEEE802154_ATTR_FRAME_RETRIES] = { .type = NLA_S8, },
};
diff --git a/net/ieee802154/raw.c b/net/ieee802154/raw.c
index 41f538b8e59c..74d54fae33d7 100644
--- a/net/ieee802154/raw.c
+++ b/net/ieee802154/raw.c
@@ -28,6 +28,7 @@
#include <linux/slab.h>
#include <net/sock.h>
#include <net/af_ieee802154.h>
+#include <net/ieee802154_netdev.h>
#include "af802154.h"
@@ -55,21 +56,24 @@ static void raw_close(struct sock *sk, long timeout)
sk_common_release(sk);
}
-static int raw_bind(struct sock *sk, struct sockaddr *uaddr, int len)
+static int raw_bind(struct sock *sk, struct sockaddr *_uaddr, int len)
{
- struct sockaddr_ieee802154 *addr = (struct sockaddr_ieee802154 *)uaddr;
+ struct ieee802154_addr addr;
+ struct sockaddr_ieee802154 *uaddr = (struct sockaddr_ieee802154 *)_uaddr;
int err = 0;
struct net_device *dev = NULL;
- if (len < sizeof(*addr))
+ if (len < sizeof(*uaddr))
return -EINVAL;
- if (addr->family != AF_IEEE802154)
+ uaddr = (struct sockaddr_ieee802154 *)_uaddr;
+ if (uaddr->family != AF_IEEE802154)
return -EINVAL;
lock_sock(sk);
- dev = ieee802154_get_dev(sock_net(sk), &addr->addr);
+ ieee802154_addr_from_sa(&addr, &uaddr->addr);
+ dev = ieee802154_get_dev(sock_net(sk), &addr);
if (!dev) {
err = -ENODEV;
goto out;
@@ -209,6 +213,10 @@ out:
static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
+ skb = skb_share_check(skb, GFP_ATOMIC);
+ if (!skb)
+ return NET_RX_DROP;
+
if (sock_queue_rcv_skb(sk, skb) < 0) {
kfree_skb(skb);
return NET_RX_DROP;
diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
new file mode 100644
index 000000000000..ef2d54372b13
--- /dev/null
+++ b/net/ieee802154/reassembly.c
@@ -0,0 +1,571 @@
+/* 6LoWPAN fragment reassembly
+ *
+ *
+ * Authors:
+ * Alexander Aring <aar@pengutronix.de>
+ *
+ * Based on: net/ipv6/reassembly.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#define pr_fmt(fmt) "6LoWPAN: " fmt
+
+#include <linux/net.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/random.h>
+#include <linux/jhash.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/export.h>
+
+#include <net/ieee802154_netdev.h>
+#include <net/6lowpan.h>
+#include <net/ipv6.h>
+#include <net/inet_frag.h>
+
+#include "reassembly.h"
+
+struct lowpan_frag_info {
+ __be16 d_tag;
+ u16 d_size;
+ u8 d_offset;
+};
+
+struct lowpan_frag_info *lowpan_cb(struct sk_buff *skb)
+{
+ return (struct lowpan_frag_info *)skb->cb;
+}
+
+static struct inet_frags lowpan_frags;
+
+static int lowpan_frag_reasm(struct lowpan_frag_queue *fq,
+ struct sk_buff *prev, struct net_device *dev);
+
+static unsigned int lowpan_hash_frag(__be16 tag, u16 d_size,
+ const struct ieee802154_addr *saddr,
+ const struct ieee802154_addr *daddr)
+{
+ u32 c;
+
+ net_get_random_once(&lowpan_frags.rnd, sizeof(lowpan_frags.rnd));
+ c = jhash_3words(ieee802154_addr_hash(saddr),
+ ieee802154_addr_hash(daddr),
+ (__force u32)(tag + (d_size << 16)),
+ lowpan_frags.rnd);
+
+ return c & (INETFRAGS_HASHSZ - 1);
+}
+
+static unsigned int lowpan_hashfn(struct inet_frag_queue *q)
+{
+ struct lowpan_frag_queue *fq;
+
+ fq = container_of(q, struct lowpan_frag_queue, q);
+ return lowpan_hash_frag(fq->tag, fq->d_size, &fq->saddr, &fq->daddr);
+}
+
+static bool lowpan_frag_match(struct inet_frag_queue *q, void *a)
+{
+ struct lowpan_frag_queue *fq;
+ struct lowpan_create_arg *arg = a;
+
+ fq = container_of(q, struct lowpan_frag_queue, q);
+ return fq->tag == arg->tag && fq->d_size == arg->d_size &&
+ ieee802154_addr_equal(&fq->saddr, arg->src) &&
+ ieee802154_addr_equal(&fq->daddr, arg->dst);
+}
+
+static void lowpan_frag_init(struct inet_frag_queue *q, void *a)
+{
+ struct lowpan_frag_queue *fq;
+ struct lowpan_create_arg *arg = a;
+
+ fq = container_of(q, struct lowpan_frag_queue, q);
+
+ fq->tag = arg->tag;
+ fq->d_size = arg->d_size;
+ fq->saddr = *arg->src;
+ fq->daddr = *arg->dst;
+}
+
+static void lowpan_frag_expire(unsigned long data)
+{
+ struct frag_queue *fq;
+ struct net *net;
+
+ fq = container_of((struct inet_frag_queue *)data, struct frag_queue, q);
+ net = container_of(fq->q.net, struct net, ieee802154_lowpan.frags);
+
+ spin_lock(&fq->q.lock);
+
+ if (fq->q.last_in & INET_FRAG_COMPLETE)
+ goto out;
+
+ inet_frag_kill(&fq->q, &lowpan_frags);
+out:
+ spin_unlock(&fq->q.lock);
+ inet_frag_put(&fq->q, &lowpan_frags);
+}
+
+static inline struct lowpan_frag_queue *
+fq_find(struct net *net, const struct lowpan_frag_info *frag_info,
+ const struct ieee802154_addr *src,
+ const struct ieee802154_addr *dst)
+{
+ struct inet_frag_queue *q;
+ struct lowpan_create_arg arg;
+ unsigned int hash;
+
+ arg.tag = frag_info->d_tag;
+ arg.d_size = frag_info->d_size;
+ arg.src = src;
+ arg.dst = dst;
+
+ read_lock(&lowpan_frags.lock);
+ hash = lowpan_hash_frag(frag_info->d_tag, frag_info->d_size, src, dst);
+
+ q = inet_frag_find(&net->ieee802154_lowpan.frags,
+ &lowpan_frags, &arg, hash);
+ if (IS_ERR_OR_NULL(q)) {
+ inet_frag_maybe_warn_overflow(q, pr_fmt());
+ return NULL;
+ }
+ return container_of(q, struct lowpan_frag_queue, q);
+}
+
+static int lowpan_frag_queue(struct lowpan_frag_queue *fq,
+ struct sk_buff *skb, const u8 frag_type)
+{
+ struct sk_buff *prev, *next;
+ struct net_device *dev;
+ int end, offset;
+
+ if (fq->q.last_in & INET_FRAG_COMPLETE)
+ goto err;
+
+ offset = lowpan_cb(skb)->d_offset << 3;
+ end = lowpan_cb(skb)->d_size;
+
+ /* Is this the final fragment? */
+ if (offset + skb->len == end) {
+ /* If we already have some bits beyond end
+ * or have different end, the segment is corrupted.
+ */
+ if (end < fq->q.len ||
+ ((fq->q.last_in & INET_FRAG_LAST_IN) && end != fq->q.len))
+ goto err;
+ fq->q.last_in |= INET_FRAG_LAST_IN;
+ fq->q.len = end;
+ } else {
+ if (end > fq->q.len) {
+ /* Some bits beyond end -> corruption. */
+ if (fq->q.last_in & INET_FRAG_LAST_IN)
+ goto err;
+ fq->q.len = end;
+ }
+ }
+
+ /* Find out which fragments are in front and at the back of us
+ * in the chain of fragments so far. We must know where to put
+ * this fragment, right?
+ */
+ prev = fq->q.fragments_tail;
+ if (!prev || lowpan_cb(prev)->d_offset < lowpan_cb(skb)->d_offset) {
+ next = NULL;
+ goto found;
+ }
+ prev = NULL;
+ for (next = fq->q.fragments; next != NULL; next = next->next) {
+ if (lowpan_cb(next)->d_offset >= lowpan_cb(skb)->d_offset)
+ break; /* bingo! */
+ prev = next;
+ }
+
+found:
+ /* Insert this fragment in the chain of fragments. */
+ skb->next = next;
+ if (!next)
+ fq->q.fragments_tail = skb;
+ if (prev)
+ prev->next = skb;
+ else
+ fq->q.fragments = skb;
+
+ dev = skb->dev;
+ if (dev)
+ skb->dev = NULL;
+
+ fq->q.stamp = skb->tstamp;
+ if (frag_type == LOWPAN_DISPATCH_FRAG1) {
+ /* Calculate uncomp. 6lowpan header to estimate full size */
+ fq->q.meat += lowpan_uncompress_size(skb, NULL);
+ fq->q.last_in |= INET_FRAG_FIRST_IN;
+ } else {
+ fq->q.meat += skb->len;
+ }
+ add_frag_mem_limit(&fq->q, skb->truesize);
+
+ if (fq->q.last_in == (INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN) &&
+ fq->q.meat == fq->q.len) {
+ int res;
+ unsigned long orefdst = skb->_skb_refdst;
+
+ skb->_skb_refdst = 0UL;
+ res = lowpan_frag_reasm(fq, prev, dev);
+ skb->_skb_refdst = orefdst;
+ return res;
+ }
+
+ inet_frag_lru_move(&fq->q);
+ return -1;
+err:
+ kfree_skb(skb);
+ return -1;
+}
+
+/* Check if this packet is complete.
+ * Returns NULL on failure by any reason, and pointer
+ * to current nexthdr field in reassembled frame.
+ *
+ * It is called with locked fq, and caller must check that
+ * queue is eligible for reassembly i.e. it is not COMPLETE,
+ * the last and the first frames arrived and all the bits are here.
+ */
+static int lowpan_frag_reasm(struct lowpan_frag_queue *fq, struct sk_buff *prev,
+ struct net_device *dev)
+{
+ struct sk_buff *fp, *head = fq->q.fragments;
+ int sum_truesize;
+
+ inet_frag_kill(&fq->q, &lowpan_frags);
+
+ /* Make the one we just received the head. */
+ if (prev) {
+ head = prev->next;
+ fp = skb_clone(head, GFP_ATOMIC);
+
+ if (!fp)
+ goto out_oom;
+
+ fp->next = head->next;
+ if (!fp->next)
+ fq->q.fragments_tail = fp;
+ prev->next = fp;
+
+ skb_morph(head, fq->q.fragments);
+ head->next = fq->q.fragments->next;
+
+ consume_skb(fq->q.fragments);
+ fq->q.fragments = head;
+ }
+
+ /* Head of list must not be cloned. */
+ if (skb_unclone(head, GFP_ATOMIC))
+ goto out_oom;
+
+ /* If the first fragment is fragmented itself, we split
+ * it to two chunks: the first with data and paged part
+ * and the second, holding only fragments.
+ */
+ if (skb_has_frag_list(head)) {
+ struct sk_buff *clone;
+ int i, plen = 0;
+
+ clone = alloc_skb(0, GFP_ATOMIC);
+ if (!clone)
+ goto out_oom;
+ clone->next = head->next;
+ head->next = clone;
+ skb_shinfo(clone)->frag_list = skb_shinfo(head)->frag_list;
+ skb_frag_list_init(head);
+ for (i = 0; i < skb_shinfo(head)->nr_frags; i++)
+ plen += skb_frag_size(&skb_shinfo(head)->frags[i]);
+ clone->len = head->data_len - plen;
+ clone->data_len = clone->len;
+ head->data_len -= clone->len;
+ head->len -= clone->len;
+ add_frag_mem_limit(&fq->q, clone->truesize);
+ }
+
+ WARN_ON(head == NULL);
+
+ sum_truesize = head->truesize;
+ for (fp = head->next; fp;) {
+ bool headstolen;
+ int delta;
+ struct sk_buff *next = fp->next;
+
+ sum_truesize += fp->truesize;
+ if (skb_try_coalesce(head, fp, &headstolen, &delta)) {
+ kfree_skb_partial(fp, headstolen);
+ } else {
+ if (!skb_shinfo(head)->frag_list)
+ skb_shinfo(head)->frag_list = fp;
+ head->data_len += fp->len;
+ head->len += fp->len;
+ head->truesize += fp->truesize;
+ }
+ fp = next;
+ }
+ sub_frag_mem_limit(&fq->q, sum_truesize);
+
+ head->next = NULL;
+ head->dev = dev;
+ head->tstamp = fq->q.stamp;
+
+ fq->q.fragments = NULL;
+ fq->q.fragments_tail = NULL;
+
+ return 1;
+out_oom:
+ net_dbg_ratelimited("lowpan_frag_reasm: no memory for reassembly\n");
+ return -1;
+}
+
+static int lowpan_get_frag_info(struct sk_buff *skb, const u8 frag_type,
+ struct lowpan_frag_info *frag_info)
+{
+ bool fail;
+ u8 pattern = 0, low = 0;
+
+ fail = lowpan_fetch_skb(skb, &pattern, 1);
+ fail |= lowpan_fetch_skb(skb, &low, 1);
+ frag_info->d_size = (pattern & 7) << 8 | low;
+ fail |= lowpan_fetch_skb(skb, &frag_info->d_tag, 2);
+
+ if (frag_type == LOWPAN_DISPATCH_FRAGN) {
+ fail |= lowpan_fetch_skb(skb, &frag_info->d_offset, 1);
+ } else {
+ skb_reset_network_header(skb);
+ frag_info->d_offset = 0;
+ }
+
+ if (unlikely(fail))
+ return -EIO;
+
+ return 0;
+}
+
+int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type)
+{
+ struct lowpan_frag_queue *fq;
+ struct net *net = dev_net(skb->dev);
+ struct lowpan_frag_info *frag_info = lowpan_cb(skb);
+ struct ieee802154_addr source, dest;
+ int err;
+
+ source = mac_cb(skb)->source;
+ dest = mac_cb(skb)->dest;
+
+ err = lowpan_get_frag_info(skb, frag_type, frag_info);
+ if (err < 0)
+ goto err;
+
+ if (frag_info->d_size > net->ieee802154_lowpan.max_dsize)
+ goto err;
+
+ inet_frag_evictor(&net->ieee802154_lowpan.frags, &lowpan_frags, false);
+
+ fq = fq_find(net, frag_info, &source, &dest);
+ if (fq != NULL) {
+ int ret;
+ spin_lock(&fq->q.lock);
+ ret = lowpan_frag_queue(fq, skb, frag_type);
+ spin_unlock(&fq->q.lock);
+
+ inet_frag_put(&fq->q, &lowpan_frags);
+ return ret;
+ }
+
+err:
+ kfree_skb(skb);
+ return -1;
+}
+EXPORT_SYMBOL(lowpan_frag_rcv);
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table lowpan_frags_ns_ctl_table[] = {
+ {
+ .procname = "6lowpanfrag_high_thresh",
+ .data = &init_net.ieee802154_lowpan.frags.high_thresh,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
+ .procname = "6lowpanfrag_low_thresh",
+ .data = &init_net.ieee802154_lowpan.frags.low_thresh,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ {
+ .procname = "6lowpanfrag_time",
+ .data = &init_net.ieee802154_lowpan.frags.timeout,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ },
+ {
+ .procname = "6lowpanfrag_max_datagram_size",
+ .data = &init_net.ieee802154_lowpan.max_dsize,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec
+ },
+ { }
+};
+
+static struct ctl_table lowpan_frags_ctl_table[] = {
+ {
+ .procname = "6lowpanfrag_secret_interval",
+ .data = &lowpan_frags.secret_interval,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_jiffies,
+ },
+ { }
+};
+
+static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
+{
+ struct ctl_table *table;
+ struct ctl_table_header *hdr;
+
+ table = lowpan_frags_ns_ctl_table;
+ if (!net_eq(net, &init_net)) {
+ table = kmemdup(table, sizeof(lowpan_frags_ns_ctl_table),
+ GFP_KERNEL);
+ if (table == NULL)
+ goto err_alloc;
+
+ table[0].data = &net->ieee802154_lowpan.frags.high_thresh;
+ table[1].data = &net->ieee802154_lowpan.frags.low_thresh;
+ table[2].data = &net->ieee802154_lowpan.frags.timeout;
+ table[3].data = &net->ieee802154_lowpan.max_dsize;
+
+ /* Don't export sysctls to unprivileged users */
+ if (net->user_ns != &init_user_ns)
+ table[0].procname = NULL;
+ }
+
+ hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", table);
+ if (hdr == NULL)
+ goto err_reg;
+
+ net->ieee802154_lowpan.sysctl.frags_hdr = hdr;
+ return 0;
+
+err_reg:
+ if (!net_eq(net, &init_net))
+ kfree(table);
+err_alloc:
+ return -ENOMEM;
+}
+
+static void __net_exit lowpan_frags_ns_sysctl_unregister(struct net *net)
+{
+ struct ctl_table *table;
+
+ table = net->ieee802154_lowpan.sysctl.frags_hdr->ctl_table_arg;
+ unregister_net_sysctl_table(net->ieee802154_lowpan.sysctl.frags_hdr);
+ if (!net_eq(net, &init_net))
+ kfree(table);
+}
+
+static struct ctl_table_header *lowpan_ctl_header;
+
+static int lowpan_frags_sysctl_register(void)
+{
+ lowpan_ctl_header = register_net_sysctl(&init_net,
+ "net/ieee802154/6lowpan",
+ lowpan_frags_ctl_table);
+ return lowpan_ctl_header == NULL ? -ENOMEM : 0;
+}
+
+static void lowpan_frags_sysctl_unregister(void)
+{
+ unregister_net_sysctl_table(lowpan_ctl_header);
+}
+#else
+static inline int lowpan_frags_ns_sysctl_register(struct net *net)
+{
+ return 0;
+}
+
+static inline void lowpan_frags_ns_sysctl_unregister(struct net *net)
+{
+}
+
+static inline int lowpan_frags_sysctl_register(void)
+{
+ return 0;
+}
+
+static inline void lowpan_frags_sysctl_unregister(void)
+{
+}
+#endif
+
+static int __net_init lowpan_frags_init_net(struct net *net)
+{
+ net->ieee802154_lowpan.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
+ net->ieee802154_lowpan.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
+ net->ieee802154_lowpan.frags.timeout = IPV6_FRAG_TIMEOUT;
+ net->ieee802154_lowpan.max_dsize = 0xFFFF;
+
+ inet_frags_init_net(&net->ieee802154_lowpan.frags);
+
+ return lowpan_frags_ns_sysctl_register(net);
+}
+
+static void __net_exit lowpan_frags_exit_net(struct net *net)
+{
+ lowpan_frags_ns_sysctl_unregister(net);
+ inet_frags_exit_net(&net->ieee802154_lowpan.frags, &lowpan_frags);
+}
+
+static struct pernet_operations lowpan_frags_ops = {
+ .init = lowpan_frags_init_net,
+ .exit = lowpan_frags_exit_net,
+};
+
+int __init lowpan_net_frag_init(void)
+{
+ int ret;
+
+ ret = lowpan_frags_sysctl_register();
+ if (ret)
+ return ret;
+
+ ret = register_pernet_subsys(&lowpan_frags_ops);
+ if (ret)
+ goto err_pernet;
+
+ lowpan_frags.hashfn = lowpan_hashfn;
+ lowpan_frags.constructor = lowpan_frag_init;
+ lowpan_frags.destructor = NULL;
+ lowpan_frags.skb_free = NULL;
+ lowpan_frags.qsize = sizeof(struct frag_queue);
+ lowpan_frags.match = lowpan_frag_match;
+ lowpan_frags.frag_expire = lowpan_frag_expire;
+ lowpan_frags.secret_interval = 10 * 60 * HZ;
+ inet_frags_init(&lowpan_frags);
+
+ return ret;
+err_pernet:
+ lowpan_frags_sysctl_unregister();
+ return ret;
+}
+
+void lowpan_net_frag_exit(void)
+{
+ inet_frags_fini(&lowpan_frags);
+ lowpan_frags_sysctl_unregister();
+ unregister_pernet_subsys(&lowpan_frags_ops);
+}
diff --git a/net/ieee802154/reassembly.h b/net/ieee802154/reassembly.h
new file mode 100644
index 000000000000..74e4a7c98191
--- /dev/null
+++ b/net/ieee802154/reassembly.h
@@ -0,0 +1,41 @@
+#ifndef __IEEE802154_6LOWPAN_REASSEMBLY_H__
+#define __IEEE802154_6LOWPAN_REASSEMBLY_H__
+
+#include <net/inet_frag.h>
+
+struct lowpan_create_arg {
+ __be16 tag;
+ u16 d_size;
+ const struct ieee802154_addr *src;
+ const struct ieee802154_addr *dst;
+};
+
+/* Equivalent of ipv4 struct ip
+ */
+struct lowpan_frag_queue {
+ struct inet_frag_queue q;
+
+ __be16 tag;
+ u16 d_size;
+ struct ieee802154_addr saddr;
+ struct ieee802154_addr daddr;
+};
+
+static inline u32 ieee802154_addr_hash(const struct ieee802154_addr *a)
+{
+ switch (a->mode) {
+ case IEEE802154_ADDR_LONG:
+ return (((__force u64)a->extended_addr) >> 32) ^
+ (((__force u64)a->extended_addr) & 0xffffffff);
+ case IEEE802154_ADDR_SHORT:
+ return (__force u32)(a->short_addr);
+ default:
+ return 0;
+ }
+}
+
+int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
+void lowpan_net_frag_exit(void);
+int lowpan_net_frag_init(void);
+
+#endif /* __IEEE802154_6LOWPAN_REASSEMBLY_H__ */
diff --git a/net/ieee802154/wpan-class.c b/net/ieee802154/wpan-class.c
index 4dd37615a749..8d6f6704da84 100644
--- a/net/ieee802154/wpan-class.c
+++ b/net/ieee802154/wpan-class.c
@@ -44,9 +44,7 @@ static DEVICE_ATTR_RO(name);
MASTER_SHOW(current_channel, "%d");
MASTER_SHOW(current_page, "%d");
-MASTER_SHOW_COMPLEX(transmit_power, "%d +- %d dB",
- ((signed char) (phy->transmit_power << 2)) >> 2,
- (phy->transmit_power >> 6) ? (phy->transmit_power >> 6) * 3 : 1);
+MASTER_SHOW(transmit_power, "%d +- 1 dB");
MASTER_SHOW(cca_mode, "%d");
static ssize_t channels_supported_show(struct device *dev,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 03:23:21 +0000