diff options
| -rw-r--r-- | include/net/6lowpan.h | 27 | ||||
| -rw-r--r-- | net/6lowpan/iphc.c | 4 |
2 files changed, 16 insertions, 15 deletions
diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h index ac30ad3d8cd3..4afdbb3ab6d8 100644 --- a/include/net/6lowpan.h +++ b/include/net/6lowpan.h @@ -287,19 +287,20 @@ static inline void raw_dump_inline(const char *caller, char *msg, const 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 bool lowpan_fetch_skb(struct sk_buff *skb, - void *data, const unsigned int len) +/** + * lowpan_fetch_skb - getting inline data from 6LoWPAN header + * + * This function will pull data from sk buffer and put it into data to + * remove the 6LoWPAN inline data. This function returns true if the + * sk buffer is too small to pull the amount of data which is specified + * by len. + * + * @skb: the buffer where the inline data should be pulled from. + * @data: destination buffer for the inline data. + * @len: amount of data which should be pulled in bytes. + */ +static inline bool lowpan_fetch_skb(struct sk_buff *skb, void *data, + unsigned int len) { if (unlikely(!pskb_may_pull(skb, len))) return true; diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index 8f967d3b494e..87d8f1fe7a4a 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -265,8 +265,8 @@ int lowpan_header_decompress(struct sk_buff *skb, const struct net_device *dev, raw_dump_table(__func__, "raw skb data dump uncompressed", skb->data, skb->len); - if (lowpan_fetch_skb_u8(skb, &iphc0) || - lowpan_fetch_skb_u8(skb, &iphc1)) + if (lowpan_fetch_skb(skb, &iphc0, sizeof(iphc0)) || + lowpan_fetch_skb(skb, &iphc1, sizeof(iphc1))) return -EINVAL; /* another if the CID flag is set */ |