projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1cd829c8 | 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 | * | |
| 1cd829c8 | 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> | |
| 1cd829c8 | 22 | #include <linux/netdevice.h> |
| 23 | #include <linux/crc-ccitt.h> | |
| 24 | ||
| 25 | #include <net/mac802154.h> | |
| 26 | #include <net/ieee802154_netdev.h> | |
| 27 | ||
| 0f1556bc | 28 | #include "ieee802154_i.h" |
| 1cd829c8 | 29 | |
| 1cd829c8 | 30 | static void |
| c5c47e67 | 31 | mac802154_subif_rx(struct ieee802154_hw *hw, struct sk_buff *skb) |
| 1cd829c8 | 32 | { |
| 60741361 | 33 | struct ieee802154_local *local = hw_to_local(hw); |
| 1cd829c8 | 34 | |
| 1cd829c8 | 35 | skb->protocol = htons(ETH_P_IEEE802154); |
| 36 | skb_reset_mac_header(skb); | |
| 37 | ||
| a5e1ec53 | 38 | if (!(local->hw.flags & IEEE802154_HW_OMIT_CKSUM)) { |
| 1cd829c8 | 39 | u16 crc; |
| 40 | ||
| 41 | if (skb->len < 2) { | |
| 42 | pr_debug("got invalid frame\n"); | |
| 2d3b5b0a | 43 | goto fail; |
| 1cd829c8 | 44 | } |
| 45 | crc = crc_ccitt(0, skb->data, skb->len); | |
| 46 | if (crc) { | |
| 47 | pr_debug("CRC mismatch\n"); | |
| 2d3b5b0a | 48 | goto fail; |
| 1cd829c8 | 49 | } |
| 50 | skb_trim(skb, skb->len - 2); /* CRC */ | |
| 51 | } | |
| 52 | ||
| a5e1ec53 AA |
53 | mac802154_monitors_rx(local, skb); |
| 54 | mac802154_wpans_rx(local, skb); | |
| 2d3b5b0a PB |
55 | |
| 56 | return; | |
| 57 | ||
| 58 | fail: | |
| 59 | kfree_skb(skb); | |
| 1cd829c8 | 60 | } |
| 61 | ||
| c5c47e67 | 62 | void ieee802154_rx(struct ieee802154_hw *hw, struct sk_buff *skb) |
| 1cd829c8 | 63 | { |
| c730c903 AA |
64 | WARN_ON_ONCE(softirq_count() == 0); |
| 65 | ||
| c5c47e67 | 66 | mac802154_subif_rx(hw, skb); |
| 1cd829c8 | 67 | } |
| c5c47e67 | 68 | EXPORT_SYMBOL(ieee802154_rx); |
| 1cd829c8 | 69 | |
| 70 | void | |
| 5a504397 | 71 | ieee802154_rx_irqsafe(struct ieee802154_hw *hw, struct sk_buff *skb, u8 lqi) |
| 1cd829c8 | 72 | { |
| 60741361 | 73 | struct ieee802154_local *local = hw_to_local(hw); |
| 1cd829c8 | 74 | |
| c5c47e67 AA |
75 | mac_cb(skb)->lqi = lqi; |
| 76 | skb->pkt_type = IEEE802154_RX_MSG; | |
| 77 | skb_queue_tail(&local->skb_queue, skb); | |
| 78 | tasklet_schedule(&local->tasklet); | |
| 1cd829c8 | 79 | } |
| 80 | EXPORT_SYMBOL(ieee802154_rx_irqsafe); |