From a6f773891a836abfa16fcbb8af14c29c3e109336 Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Tue, 13 Oct 2015 13:42:57 +0200 Subject: 6lowpan: cleanup lowpan_header_compress This patch changes the lowpan_header_compress function by removing unused parameters like "len" and drop static value parameters of protocol type. Instead we really check the protocol type inside inside the skb structure. Also we drop the use of IEEE802154_ADDR_LEN which is link-layer specific. Instead we using EUI64_ADDR_LEN which should always the default case for now. Signed-off-by: Alexander Aring Acked-by: Jukka Rissanen Signed-off-by: Marcel Holtmann --- net/6lowpan/iphc.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) (limited to 'net/6lowpan') diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c index dd5f27d..4e4af8c 100644 --- a/net/6lowpan/iphc.c +++ b/net/6lowpan/iphc.c @@ -423,16 +423,15 @@ static u8 lowpan_compress_addr_64(u8 **hc_ptr, u8 shift, return rol8(val, shift); } -int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, - unsigned short type, const void *_daddr, - const void *_saddr, unsigned int len) +int lowpan_header_compress(struct sk_buff *skb, const struct net_device *dev, + const void *daddr, const void *saddr) { u8 tmp, iphc0, iphc1, *hc_ptr; struct ipv6hdr *hdr; u8 head[LOWPAN_IPHC_MAX_HC_BUF_LEN] = {}; int ret, addr_type; - if (type != ETH_P_IPV6) + if (skb->protocol != htons(ETH_P_IPV6)) return -EINVAL; hdr = ipv6_hdr(skb); @@ -456,10 +455,8 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, /* TODO: context lookup */ - raw_dump_inline(__func__, "saddr", - (unsigned char *)_saddr, IEEE802154_ADDR_LEN); - raw_dump_inline(__func__, "daddr", - (unsigned char *)_daddr, IEEE802154_ADDR_LEN); + raw_dump_inline(__func__, "saddr", saddr, EUI64_ADDR_LEN); + raw_dump_inline(__func__, "daddr", daddr, EUI64_ADDR_LEN); raw_dump_table(__func__, "sending raw skb network uncompressed packet", skb->data, skb->len); @@ -544,7 +541,7 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, if (addr_type & IPV6_ADDR_LINKLOCAL) { iphc1 |= lowpan_compress_addr_64(&hc_ptr, LOWPAN_IPHC_SAM_BIT, - &hdr->saddr, _saddr); + &hdr->saddr, saddr); pr_debug("source address unicast link-local %pI6c iphc1 0x%02x\n", &hdr->saddr, iphc1); } else { @@ -589,7 +586,7 @@ int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, if (addr_type & IPV6_ADDR_LINKLOCAL) { /* TODO: context lookup */ iphc1 |= lowpan_compress_addr_64(&hc_ptr, - LOWPAN_IPHC_DAM_BIT, &hdr->daddr, _daddr); + LOWPAN_IPHC_DAM_BIT, &hdr->daddr, daddr); pr_debug("dest address unicast link-local %pI6c " "iphc1 0x%02x\n", &hdr->daddr, iphc1); } else { -- cgit v1.1