From 556a5bfc03c35c6f0b4e85ef6a19d00f0eb6dd00 Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Tue, 29 Jul 2014 23:47:02 +0200 Subject: 6lowpan: iphc: use ipv6 api to check address scope This patch removes the own implementation to check of link-layer, broadcast and any address type and use the IPv6 api for that. Signed-off-by: Alexander Aring Signed-off-by: Marcel Holtmann --- net/6lowpan/iphc.c | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) (limited to 'net') 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 " -- cgit v1.2.3