alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007-2012 Siemens AG |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 13 | * Written by: |
| 14 | * Pavel Smolenskiy <pavel.smolenskiy@gmail.com> |
| 15 | * Maxim Gorbachyov <maxim.gorbachev@siemens.com> |
| 16 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> |
| 17 | * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> |
| 18 | */ |
| 19 | |
| 20 | #include <linux/kernel.h> |
| 21 | #include <linux/module.h> |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 22 | #include <linux/netdevice.h> |
| 23 | #include <linux/crc-ccitt.h> |
| 24 | |
| 25 | #include <net/mac802154.h> |
| 26 | #include <net/ieee802154_netdev.h> |
| 27 | |
Alexander Aring | 0f1556b | 2014-10-25 09:41:00 +0200 | [diff] [blame] | 28 | #include "ieee802154_i.h" |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 29 | |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 30 | static void |
Alexander Aring | c5c47e6 | 2014-10-27 17:13:30 +0100 | [diff] [blame^] | 31 | mac802154_subif_rx(struct ieee802154_hw *hw, struct sk_buff *skb) |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 32 | { |
Alexander Aring | 6074136 | 2014-10-25 17:16:39 +0200 | [diff] [blame] | 33 | struct ieee802154_local *local = hw_to_local(hw); |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 34 | |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 35 | skb->protocol = htons(ETH_P_IEEE802154); |
| 36 | skb_reset_mac_header(skb); |
| 37 | |
Alexander Aring | a5e1ec5 | 2014-10-25 17:16:35 +0200 | [diff] [blame] | 38 | if (!(local->hw.flags & IEEE802154_HW_OMIT_CKSUM)) { |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 39 | u16 crc; |
| 40 | |
| 41 | if (skb->len < 2) { |
| 42 | pr_debug("got invalid frame\n"); |
Phoebe Buckheister | 2d3b5b0 | 2014-06-11 12:03:07 +0200 | [diff] [blame] | 43 | goto fail; |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 44 | } |
| 45 | crc = crc_ccitt(0, skb->data, skb->len); |
| 46 | if (crc) { |
| 47 | pr_debug("CRC mismatch\n"); |
Phoebe Buckheister | 2d3b5b0 | 2014-06-11 12:03:07 +0200 | [diff] [blame] | 48 | goto fail; |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 49 | } |
| 50 | skb_trim(skb, skb->len - 2); /* CRC */ |
| 51 | } |
| 52 | |
Alexander Aring | a5e1ec5 | 2014-10-25 17:16:35 +0200 | [diff] [blame] | 53 | mac802154_monitors_rx(local, skb); |
| 54 | mac802154_wpans_rx(local, skb); |
Phoebe Buckheister | 2d3b5b0 | 2014-06-11 12:03:07 +0200 | [diff] [blame] | 55 | |
| 56 | return; |
| 57 | |
| 58 | fail: |
| 59 | kfree_skb(skb); |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 60 | } |
| 61 | |
Alexander Aring | c5c47e6 | 2014-10-27 17:13:30 +0100 | [diff] [blame^] | 62 | void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb) |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 63 | { |
Alexander Aring | c5c47e6 | 2014-10-27 17:13:30 +0100 | [diff] [blame^] | 64 | mac802154_subif_rx(hw, skb); |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 65 | } |
Alexander Aring | c5c47e6 | 2014-10-27 17:13:30 +0100 | [diff] [blame^] | 66 | EXPORT_SYMBOL(ieee802154_rx); |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 67 | |
| 68 | void |
Alexander Aring | 5a50439 | 2014-10-25 17:16:34 +0200 | [diff] [blame] | 69 | ieee802154_rx_irqsafe(struct ieee802154_hw *hw, struct sk_buff *skb, u8 lqi) |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 70 | { |
Alexander Aring | 6074136 | 2014-10-25 17:16:39 +0200 | [diff] [blame] | 71 | struct ieee802154_local *local = hw_to_local(hw); |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 72 | |
Alexander Aring | c5c47e6 | 2014-10-27 17:13:30 +0100 | [diff] [blame^] | 73 | mac_cb(skb)->lqi = lqi; |
| 74 | skb->pkt_type = IEEE802154_RX_MSG; |
| 75 | skb_queue_tail(&local->skb_queue, skb); |
| 76 | tasklet_schedule(&local->tasklet); |
alex.bluesman.smirnov@gmail.com | 1cd829c | 2012-05-15 20:50:21 +0000 | [diff] [blame] | 77 | } |
| 78 | EXPORT_SYMBOL(ieee802154_rx_irqsafe); |