diff options
| -rw-r--r-- | include/net/6lowpan.h | 13 | ||||
| -rw-r--r-- | net/6lowpan/iphc.c | 29 |
2 files changed, 17 insertions, 25 deletions
diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h index 79b530fb2c4d..18010bce68c8 100644 --- a/include/net/6lowpan.h +++ b/include/net/6lowpan.h @@ -75,20 +75,10 @@ (((a)->s6_addr[14]) == (m)[6]) && \ (((a)->s6_addr[15]) == (m)[7])) -/* ipv6 address is unspecified */ -#define is_addr_unspecified(a) \ - ((((a)->s6_addr32[0]) == 0) && \ - (((a)->s6_addr32[1]) == 0) && \ - (((a)->s6_addr32[2]) == 0) && \ - (((a)->s6_addr32[3]) == 0)) - /* compare ipv6 addresses prefixes */ #define ipaddr_prefixcmp(addr1, addr2, length) \ (memcmp(addr1, addr2, length >> 3) == 0) -/* local link, i.e. FE80::/10 */ -#define is_addr_link_local(a) (((a)->s6_addr16[0]) == htons(0xFE80)) - /* * check whether we can compress the IID to 16 bits, * it's possible for unicast adresses with first 49 bits are zero only. @@ -100,9 +90,6 @@ (((a)->s6_addr[12]) == 0xfe) && \ (((a)->s6_addr[13]) == 0)) -/* multicast address */ -#define is_addr_mcast(a) (((a)->s6_addr[0]) == 0xFF) - /* check whether the 112-bit gid of the multicast address is mappable to: */ /* 9 bits, for FF02::1 (all nodes) and FF02::2 (all routers) addresses only. */ diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index 636edd0f3724..d4fc2dd8ad75 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -611,6 +611,7 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, u8 tmp, iphc0, iphc1, *hc_ptr; struct ipv6hdr *hdr; u8 head[100] = {}; + int addr_type; if (type != ETH_P_IPV6) return -EINVAL; @@ -720,23 +721,27 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, sizeof(hdr->hop_limit)); } + addr_type = ipv6_addr_type(&hdr->saddr); /* source address compression */ - if (is_addr_unspecified(&hdr->saddr)) { + if (addr_type == IPV6_ADDR_ANY) { pr_debug("source address is unspecified, setting SAC\n"); iphc1 |= LOWPAN_IPHC_SAC; - /* TODO: context lookup */ - } else if (is_addr_link_local(&hdr->saddr)) { - iphc1 |= lowpan_compress_addr_64(&hc_ptr, - LOWPAN_IPHC_SAM_BIT, &hdr->saddr, _saddr); - pr_debug("source address unicast link-local %pI6c " - "iphc1 0x%02x\n", &hdr->saddr, iphc1); } else { - pr_debug("send the full source address\n"); - lowpan_push_hc_data(&hc_ptr, &hdr->saddr.s6_addr[0], 16); + if (addr_type & IPV6_ADDR_LINKLOCAL) { + iphc1 |= lowpan_compress_addr_64(&hc_ptr, + LOWPAN_IPHC_SAM_BIT, + &hdr->saddr, _saddr); + pr_debug("source address unicast link-local %pI6c iphc1 0x%02x\n", + &hdr->saddr, iphc1); + } else { + pr_debug("send the full source address\n"); + lowpan_push_hc_data(&hc_ptr, hdr->saddr.s6_addr, 16); + } } + addr_type = ipv6_addr_type(&hdr->daddr); /* destination address compression */ - if (is_addr_mcast(&hdr->daddr)) { + if (addr_type & IPV6_ADDR_MULTICAST) { pr_debug("destination address is multicast: "); iphc1 |= LOWPAN_IPHC_M; if (lowpan_is_mcast_addr_compressable8(&hdr->daddr)) { @@ -767,8 +772,8 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, lowpan_push_hc_data(&hc_ptr, hdr->daddr.s6_addr, 16); } } else { - /* TODO: context lookup */ - if (is_addr_link_local(&hdr->daddr)) { + if (addr_type & IPV6_ADDR_LINKLOCAL) { + /* TODO: context lookup */ iphc1 |= lowpan_compress_addr_64(&hc_ptr, LOWPAN_IPHC_DAM_BIT, &hdr->daddr, _daddr); pr_debug("dest address unicast link-local %pI6c " |