diff options
| -rw-r--r-- | net/6lowpan/iphc.c | 9 | ||||
| -rw-r--r-- | net/6lowpan/nhc.c | 13 | ||||
| -rw-r--r-- | net/6lowpan/nhc.h | 9 |
3 files changed, 14 insertions, 17 deletions
diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index 87d8f1fe7a4a..afe36aab04ca 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -532,9 +532,12 @@ int lowpan_header_compress(struct sk_buff *skb, const struct net_device *dev, /* Check if we provide the nhc format for nexthdr and compression * functionality. If not nexthdr is handled inline and not compressed. */ - ret = lowpan_nhc_check_compression(skb, hdr, &hc_ptr, &iphc0); - if (ret < 0) - return ret; + ret = lowpan_nhc_check_compression(skb, hdr, &hc_ptr); + if (ret == -ENOENT) + lowpan_push_hc_data(&hc_ptr, &hdr->nexthdr, + sizeof(hdr->nexthdr)); + else + iphc0 |= LOWPAN_IPHC_NH_C; /* Hop limit * if 1: compress, encoding is 01 diff --git a/net/6lowpan/nhc.c b/net/6lowpan/nhc.c index 589224e458dd..7008d53e455c 100644 --- a/net/6lowpan/nhc.c +++ b/net/6lowpan/nhc.c @@ -95,23 +95,20 @@ static struct lowpan_nhc *lowpan_nhc_by_nhcid(const struct sk_buff *skb) } int lowpan_nhc_check_compression(struct sk_buff *skb, - const struct ipv6hdr *hdr, u8 **hc_ptr, - u8 *iphc0) + const struct ipv6hdr *hdr, u8 **hc_ptr) { struct lowpan_nhc *nhc; + int ret = 0; spin_lock_bh(&lowpan_nhc_lock); nhc = lowpan_nexthdr_nhcs[hdr->nexthdr]; - if (nhc && nhc->compress) - *iphc0 |= LOWPAN_IPHC_NH_C; - else - lowpan_push_hc_data(hc_ptr, &hdr->nexthdr, - sizeof(hdr->nexthdr)); + if (!(nhc && nhc->compress)) + ret = -ENOENT; spin_unlock_bh(&lowpan_nhc_lock); - return 0; + return ret; } int lowpan_nhc_do_compression(struct sk_buff *skb, const struct ipv6hdr *hdr, diff --git a/net/6lowpan/nhc.h b/net/6lowpan/nhc.h index e3a564421898..803041400136 100644 --- a/net/6lowpan/nhc.h +++ b/net/6lowpan/nhc.h @@ -86,19 +86,16 @@ struct lowpan_nhc *lowpan_nhc_by_nexthdr(u8 nexthdr); /** * lowpan_nhc_check_compression - checks if we support compression format. If - * we support the nhc by nexthdr field, the 6LoWPAN iphc NHC bit will be - * set. If we don't support nexthdr will be added as inline data to the - * 6LoWPAN header. + * we support the nhc by nexthdr field, the function will return 0. If we + * don't support the nhc by nexthdr this function will return -ENOENT. * * @skb: skb of 6LoWPAN header to read nhc and replace header. * @hdr: ipv6hdr to check the nexthdr value * @hc_ptr: pointer for 6LoWPAN header which should increment at the end of * replaced header. - * @iphc0: iphc0 pointer to set the 6LoWPAN NHC bit */ int lowpan_nhc_check_compression(struct sk_buff *skb, - const struct ipv6hdr *hdr, u8 **hc_ptr, - u8 *iphc0); + const struct ipv6hdr *hdr, u8 **hc_ptr); /** * lowpan_nhc_do_compression - calling compress callback for nhc |