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| author | Alexander Aring <alex.aring@gmail.com> | 2015-09-30 10:20:09 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-09-30 13:23:57 +0200 |
| commit | 72d53b116264d5e570f610b3971dae4721aa5c0f (patch) | |
| tree | 827f46282aae1be8cab5f4d13ed606ed3934fef6 /net/ieee802154/6lowpan/tx.c | |
| parent | mac802154: check on len instead mac_len (diff) | |
| download | linux-72d53b116264d5e570f610b3971dae4721aa5c0f.tar.xz linux-72d53b116264d5e570f610b3971dae4721aa5c0f.zip | |
ieee802154: 6lowpan: change datagram var types
This patch changes datagram size variable from u16 type to unsigned int.
The reason is that an IPv6 header has an MAX_UIN16 payload length, but
the datagram size is payload + IPv6 header length. This avoids overflows
at some places.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to '')
| -rw-r--r-- | net/ieee802154/6lowpan/tx.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/ieee802154/6lowpan/tx.c b/net/ieee802154/6lowpan/tx.c index 7e0563eaea98..5ecf8af7154b 100644 --- a/net/ieee802154/6lowpan/tx.c +++ b/net/ieee802154/6lowpan/tx.c @@ -131,8 +131,8 @@ lowpan_xmit_fragment(struct sk_buff *skb, const struct ieee802154_hdr *wpan_hdr, static int lowpan_xmit_fragmented(struct sk_buff *skb, struct net_device *ldev, - const struct ieee802154_hdr *wpan_hdr, u16 dgram_size, - u16 dgram_offset) + const struct ieee802154_hdr *wpan_hdr, + unsigned int dgram_size, unsigned int dgram_offset) { __be16 frag_tag; u8 frag_hdr[5]; @@ -194,7 +194,7 @@ err: } static int lowpan_header(struct sk_buff *skb, struct net_device *ldev, - u16 *dgram_size, u16 *dgram_offset) + unsigned int *dgram_size, unsigned int *dgram_offset) { struct wpan_dev *wpan_dev = lowpan_dev_info(ldev)->wdev->ieee802154_ptr; struct ieee802154_addr sa, da; @@ -244,7 +244,7 @@ netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *ldev) { struct ieee802154_hdr wpan_hdr; int max_single, ret; - u16 dgram_size, dgram_offset; + unsigned int dgram_size, dgram_offset; pr_debug("package xmit\n"); |