jenna
/
kernel_samsung_sm7125
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

mac802154: rx: move receive handling into rx.c

Browse Source 
This patch removes all relevant receiving functions inclusive frame
parsing into rx file. Like mac80211 we should implement the complete
receive handling and parsing in this file.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
tirimbino
Alexander Aring 10 years ago committed by Marcel Holtmann
parent c730c90316
commit 2a9820c9e2
4 changed files with 214 additions and 214 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 1
      net/mac802154/ieee802154_i.h
  2. 186
      net/mac802154/iface.c
  3. 27
      net/mac802154/monitor.c
  4. 214
      net/mac802154/rx.c

1
net/mac802154/ieee802154_i.h
Unescape View File

@ -131,7 +131,6 @@ void mac802154_monitor_setup(struct net_device *dev);
netdev_tx_t
ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev);
void mac802154_wpans_rx(struct ieee802154_local *local, struct sk_buff *skb);
void mac802154_wpan_setup(struct net_device *dev);
netdev_tx_t
ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev);

186
net/mac802154/iface.c
Unescape View File

@ -373,189 +373,3 @@ void mac802154_wpan_setup(struct net_device *dev)
mac802154_llsec_init(&sdata->sec);
}
static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
{
return netif_receive_skb(skb);
}
static int
mac802154_subif_frame(struct ieee802154_sub_if_data *sdata, struct sk_buff *skb,
const struct ieee802154_hdr *hdr)
{
__le16 span, sshort;
int rc;
pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
spin_lock_bh(&sdata->mib_lock);
span = sdata->pan_id;
sshort = sdata->short_addr;
switch (mac_cb(skb)->dest.mode) {
case IEEE802154_ADDR_NONE:
if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
/* FIXME: check if we are PAN coordinator */
skb->pkt_type = PACKET_OTHERHOST;
else
/* ACK comes with both addresses empty */
skb->pkt_type = PACKET_HOST;
break;
case IEEE802154_ADDR_LONG:
if (mac_cb(skb)->dest.pan_id != span &&
mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
skb->pkt_type = PACKET_OTHERHOST;
else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
skb->pkt_type = PACKET_HOST;
else
skb->pkt_type = PACKET_OTHERHOST;
break;
case IEEE802154_ADDR_SHORT:
if (mac_cb(skb)->dest.pan_id != span &&
mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
skb->pkt_type = PACKET_OTHERHOST;
else if (mac_cb(skb)->dest.short_addr == sshort)
skb->pkt_type = PACKET_HOST;
else if (mac_cb(skb)->dest.short_addr ==
cpu_to_le16(IEEE802154_ADDR_BROADCAST))
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_OTHERHOST;
break;
default:
spin_unlock_bh(&sdata->mib_lock);
pr_debug("invalid dest mode\n");
kfree_skb(skb);
return NET_RX_DROP;
}
spin_unlock_bh(&sdata->mib_lock);
skb->dev = sdata->dev;
rc = mac802154_llsec_decrypt(&sdata->sec, skb);
if (rc) {
pr_debug("decryption failed: %i\n", rc);
goto fail;
}
sdata->dev->stats.rx_packets++;
sdata->dev->stats.rx_bytes += skb->len;
switch (mac_cb(skb)->type) {
case IEEE802154_FC_TYPE_DATA:
return mac802154_process_data(sdata->dev, skb);
default:
pr_warn("ieee802154: bad frame received (type = %d)\n",
mac_cb(skb)->type);
goto fail;
}
fail:
kfree_skb(skb);
return NET_RX_DROP;
}
static void mac802154_print_addr(const char *name,
const struct ieee802154_addr *addr)
{
if (addr->mode == IEEE802154_ADDR_NONE)
pr_debug("%s not present\n", name);
pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id));
if (addr->mode == IEEE802154_ADDR_SHORT) {
pr_debug("%s is short: %04x\n", name,
le16_to_cpu(addr->short_addr));
} else {
u64 hw = swab64((__force u64) addr->extended_addr);
pr_debug("%s is hardware: %8phC\n", name, &hw);
}
}
static int mac802154_parse_frame_start(struct sk_buff *skb,
struct ieee802154_hdr *hdr)
{
int hlen;
struct ieee802154_mac_cb *cb = mac_cb_init(skb);
hlen = ieee802154_hdr_pull(skb, hdr);
if (hlen < 0)
return -EINVAL;
skb->mac_len = hlen;
pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
hdr->seq);
cb->type = hdr->fc.type;
cb->ackreq = hdr->fc.ack_request;
cb->secen = hdr->fc.security_enabled;
mac802154_print_addr("destination", &hdr->dest);
mac802154_print_addr("source", &hdr->source);
cb->source = hdr->source;
cb->dest = hdr->dest;
if (hdr->fc.security_enabled) {
u64 key;
pr_debug("seclevel %i\n", hdr->sec.level);
switch (hdr->sec.key_id_mode) {
case IEEE802154_SCF_KEY_IMPLICIT:
pr_debug("implicit key\n");
break;
case IEEE802154_SCF_KEY_INDEX:
pr_debug("key %02x\n", hdr->sec.key_id);
break;
case IEEE802154_SCF_KEY_SHORT_INDEX:
pr_debug("key %04x:%04x %02x\n",
le32_to_cpu(hdr->sec.short_src) >> 16,
le32_to_cpu(hdr->sec.short_src) & 0xffff,
hdr->sec.key_id);
break;
case IEEE802154_SCF_KEY_HW_INDEX:
key = swab64((__force u64) hdr->sec.extended_src);
pr_debug("key source %8phC %02x\n", &key,
hdr->sec.key_id);
break;
}
}
return 0;
}
void mac802154_wpans_rx(struct ieee802154_local *local, struct sk_buff *skb)
{
int ret;
struct ieee802154_sub_if_data *sdata;
struct ieee802154_hdr hdr;
ret = mac802154_parse_frame_start(skb, &hdr);
if (ret) {
pr_debug("got invalid frame\n");
kfree_skb(skb);
return;
}
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->type != IEEE802154_DEV_WPAN ||
!netif_running(sdata->dev))
continue;
mac802154_subif_frame(sdata, skb, &hdr);
skb = NULL;
break;
}
rcu_read_unlock();
if (skb)
kfree_skb(skb);
}

27
net/mac802154/monitor.c
Unescape View File

@ -18,9 +18,7 @@
*/
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <linux/if_arp.h>
#include <linux/crc-ccitt.h>
#include <linux/ieee802154.h>
#include <net/mac802154.h>
@ -30,31 +28,6 @@
#include "ieee802154_i.h"
void mac802154_monitors_rx(struct ieee802154_local *local, struct sk_buff *skb)
{
struct sk_buff *skb2;
struct ieee802154_sub_if_data *sdata;
u16 crc = crc_ccitt(0, skb->data, skb->len);
u8 *data;
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->type != IEEE802154_DEV_MONITOR ||
!netif_running(sdata->dev))
continue;
skb2 = skb_clone(skb, GFP_ATOMIC);
skb2->dev = sdata->dev;
skb2->pkt_type = PACKET_HOST;
data = skb_put(skb2, 2);
data[0] = crc & 0xff;
data[1] = crc >> 8;
netif_rx_ni(skb2);
}
rcu_read_unlock();
}
static const struct net_device_ops mac802154_monitor_ops = {
.ndo_open = mac802154_slave_open,
.ndo_stop = mac802154_slave_close,

214
net/mac802154/rx.c
Unescape View File

@ -24,9 +24,223 @@
#include <net/mac802154.h>
#include <net/ieee802154_netdev.h>
#include <net/rtnetlink.h>
#include <linux/nl802154.h>
#include "ieee802154_i.h"
static int mac802154_process_data(struct net_device *dev, struct sk_buff *skb)
{
return netif_receive_skb(skb);
}
static int
mac802154_subif_frame(struct ieee802154_sub_if_data *sdata, struct sk_buff *skb,
const struct ieee802154_hdr *hdr)
{
__le16 span, sshort;
int rc;
pr_debug("getting packet via slave interface %s\n", sdata->dev->name);
spin_lock_bh(&sdata->mib_lock);
span = sdata->pan_id;
sshort = sdata->short_addr;
switch (mac_cb(skb)->dest.mode) {
case IEEE802154_ADDR_NONE:
if (mac_cb(skb)->dest.mode != IEEE802154_ADDR_NONE)
/* FIXME: check if we are PAN coordinator */
skb->pkt_type = PACKET_OTHERHOST;
else
/* ACK comes with both addresses empty */
skb->pkt_type = PACKET_HOST;
break;
case IEEE802154_ADDR_LONG:
if (mac_cb(skb)->dest.pan_id != span &&
mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
skb->pkt_type = PACKET_OTHERHOST;
else if (mac_cb(skb)->dest.extended_addr == sdata->extended_addr)
skb->pkt_type = PACKET_HOST;
else
skb->pkt_type = PACKET_OTHERHOST;
break;
case IEEE802154_ADDR_SHORT:
if (mac_cb(skb)->dest.pan_id != span &&
mac_cb(skb)->dest.pan_id != cpu_to_le16(IEEE802154_PANID_BROADCAST))
skb->pkt_type = PACKET_OTHERHOST;
else if (mac_cb(skb)->dest.short_addr == sshort)
skb->pkt_type = PACKET_HOST;
else if (mac_cb(skb)->dest.short_addr ==
cpu_to_le16(IEEE802154_ADDR_BROADCAST))
skb->pkt_type = PACKET_BROADCAST;
else
skb->pkt_type = PACKET_OTHERHOST;
break;
default:
spin_unlock_bh(&sdata->mib_lock);
pr_debug("invalid dest mode\n");
kfree_skb(skb);
return NET_RX_DROP;
}
spin_unlock_bh(&sdata->mib_lock);
skb->dev = sdata->dev;
rc = mac802154_llsec_decrypt(&sdata->sec, skb);
if (rc) {
pr_debug("decryption failed: %i\n", rc);
goto fail;
}
sdata->dev->stats.rx_packets++;
sdata->dev->stats.rx_bytes += skb->len;
switch (mac_cb(skb)->type) {
case IEEE802154_FC_TYPE_DATA:
return mac802154_process_data(sdata->dev, skb);
default:
pr_warn("ieee802154: bad frame received (type = %d)\n",
mac_cb(skb)->type);
goto fail;
}
fail:
kfree_skb(skb);
return NET_RX_DROP;
}
static void mac802154_print_addr(const char *name,
const struct ieee802154_addr *addr)
{
if (addr->mode == IEEE802154_ADDR_NONE)
pr_debug("%s not present\n", name);
pr_debug("%s PAN ID: %04x\n", name, le16_to_cpu(addr->pan_id));
if (addr->mode == IEEE802154_ADDR_SHORT) {
pr_debug("%s is short: %04x\n", name,
le16_to_cpu(addr->short_addr));
} else {
u64 hw = swab64((__force u64)addr->extended_addr);
pr_debug("%s is hardware: %8phC\n", name, &hw);
}
}
static int mac802154_parse_frame_start(struct sk_buff *skb,
struct ieee802154_hdr *hdr)
{
int hlen;
struct ieee802154_mac_cb *cb = mac_cb_init(skb);
hlen = ieee802154_hdr_pull(skb, hdr);
if (hlen < 0)
return -EINVAL;
skb->mac_len = hlen;
pr_debug("fc: %04x dsn: %02x\n", le16_to_cpup((__le16 *)&hdr->fc),
hdr->seq);
cb->type = hdr->fc.type;
cb->ackreq = hdr->fc.ack_request;
cb->secen = hdr->fc.security_enabled;
mac802154_print_addr("destination", &hdr->dest);
mac802154_print_addr("source", &hdr->source);
cb->source = hdr->source;
cb->dest = hdr->dest;
if (hdr->fc.security_enabled) {
u64 key;
pr_debug("seclevel %i\n", hdr->sec.level);
switch (hdr->sec.key_id_mode) {
case IEEE802154_SCF_KEY_IMPLICIT:
pr_debug("implicit key\n");
break;
case IEEE802154_SCF_KEY_INDEX:
pr_debug("key %02x\n", hdr->sec.key_id);
break;
case IEEE802154_SCF_KEY_SHORT_INDEX:
pr_debug("key %04x:%04x %02x\n",
le32_to_cpu(hdr->sec.short_src) >> 16,
le32_to_cpu(hdr->sec.short_src) & 0xffff,
hdr->sec.key_id);
break;
case IEEE802154_SCF_KEY_HW_INDEX:
key = swab64((__force u64)hdr->sec.extended_src);
pr_debug("key source %8phC %02x\n", &key,
hdr->sec.key_id);
break;
}
}
return 0;
}
static void
mac802154_wpans_rx(struct ieee802154_local *local, struct sk_buff *skb)
{
int ret;
struct ieee802154_sub_if_data *sdata;
struct ieee802154_hdr hdr;
ret = mac802154_parse_frame_start(skb, &hdr);
if (ret) {
pr_debug("got invalid frame\n");
kfree_skb(skb);
return;
}
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->type != IEEE802154_DEV_WPAN ||
!netif_running(sdata->dev))
continue;
mac802154_subif_frame(sdata, skb, &hdr);
skb = NULL;
break;
}
rcu_read_unlock();
if (skb)
kfree_skb(skb);
}
void mac802154_monitors_rx(struct ieee802154_local *local, struct sk_buff *skb)
{
struct sk_buff *skb2;
struct ieee802154_sub_if_data *sdata;
u16 crc = crc_ccitt(0, skb->data, skb->len);
u8 *data;
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->type != IEEE802154_DEV_MONITOR ||
!netif_running(sdata->dev))
continue;
skb2 = skb_clone(skb, GFP_ATOMIC);
skb2->dev = sdata->dev;
skb2->pkt_type = PACKET_HOST;
data = skb_put(skb2, 2);
data[0] = crc & 0xff;
data[1] = crc >> 8;
netif_rx_ni(skb2);
}
rcu_read_unlock();
}
static void
mac802154_subif_rx(struct ieee802154_hw *hw, struct sk_buff *skb)
{

Write Preview
Loading…
Cancel
Save