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authoryangxingwu <xingwu.yang@gmail.com>2019-07-10 21:14:10 +0800
committerDavid S. Miller <davem@davemloft.net>2019-07-11 14:43:25 -0700
commit416e8126a2672f6e91e9e81c6f5c07cf46808b13 (patch)
tree022663d29eb3e3629f3004d2b02c72deb2e89209 /net/ipv6
parent311633b604063a8a5d3fbc74d0565b42df721f68 (diff)
downloadlinux-416e8126a2672f6e91e9e81c6f5c07cf46808b13.tar.bz2
ipv6: Use ipv6_authlen for len
The length of AH header is computed manually as (hp->hdrlen+2)<<2. However, in include/linux/ipv6.h, a macro named ipv6_authlen is already defined for exactly the same job. This commit replaces the manual computation code with the macro. Signed-off-by: yangxingwu <xingwu.yang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ah6.c4
-rw-r--r--net/ipv6/exthdrs_core.c2
-rw-r--r--net/ipv6/ip6_tunnel.c2
-rw-r--r--net/ipv6/netfilter/ip6t_ah.c2
-rw-r--r--net/ipv6/netfilter/ip6t_ipv6header.c2
-rw-r--r--net/ipv6/netfilter/nf_conntrack_reasm.c2
-rw-r--r--net/ipv6/netfilter/nf_log_ipv6.c2
7 files changed, 8 insertions, 8 deletions
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 25e1172fd1c3..95835e8d99aa 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -464,7 +464,7 @@ static void ah6_input_done(struct crypto_async_request *base, int err)
struct ah_data *ahp = x->data;
struct ip_auth_hdr *ah = ip_auth_hdr(skb);
int hdr_len = skb_network_header_len(skb);
- int ah_hlen = (ah->hdrlen + 2) << 2;
+ int ah_hlen = ipv6_authlen(ah);
if (err)
goto out;
@@ -546,7 +546,7 @@ static int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
ahash = ahp->ahash;
nexthdr = ah->nexthdr;
- ah_hlen = (ah->hdrlen + 2) << 2;
+ ah_hlen = ipv6_authlen(ah);
if (ah_hlen != XFRM_ALIGN8(sizeof(*ah) + ahp->icv_full_len) &&
ah_hlen != XFRM_ALIGN8(sizeof(*ah) + ahp->icv_trunc_len))
diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c
index 11a43ee4dd45..b358f1a4dd08 100644
--- a/net/ipv6/exthdrs_core.c
+++ b/net/ipv6/exthdrs_core.c
@@ -266,7 +266,7 @@ int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
} else if (nexthdr == NEXTHDR_AUTH) {
if (flags && (*flags & IP6_FH_F_AUTH) && (target < 0))
break;
- hdrlen = (hp->hdrlen + 2) << 2;
+ hdrlen = ipv6_authlen(hp);
} else
hdrlen = ipv6_optlen(hp);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index b80fde1bc005..3134fbb65d7f 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -416,7 +416,7 @@ __u16 ip6_tnl_parse_tlv_enc_lim(struct sk_buff *skb, __u8 *raw)
break;
optlen = 8;
} else if (nexthdr == NEXTHDR_AUTH) {
- optlen = (hdr->hdrlen + 2) << 2;
+ optlen = ipv6_authlen(hdr);
} else {
optlen = ipv6_optlen(hdr);
}
diff --git a/net/ipv6/netfilter/ip6t_ah.c b/net/ipv6/netfilter/ip6t_ah.c
index 0228ff3636bb..4e15a14435e4 100644
--- a/net/ipv6/netfilter/ip6t_ah.c
+++ b/net/ipv6/netfilter/ip6t_ah.c
@@ -55,7 +55,7 @@ static bool ah_mt6(const struct sk_buff *skb, struct xt_action_param *par)
return false;
}
- hdrlen = (ah->hdrlen + 2) << 2;
+ hdrlen = ipv6_authlen(ah);
pr_debug("IPv6 AH LEN %u %u ", hdrlen, ah->hdrlen);
pr_debug("RES %04X ", ah->reserved);
diff --git a/net/ipv6/netfilter/ip6t_ipv6header.c b/net/ipv6/netfilter/ip6t_ipv6header.c
index fd439f88377f..0fc6326ef499 100644
--- a/net/ipv6/netfilter/ip6t_ipv6header.c
+++ b/net/ipv6/netfilter/ip6t_ipv6header.c
@@ -71,7 +71,7 @@ ipv6header_mt6(const struct sk_buff *skb, struct xt_action_param *par)
if (nexthdr == NEXTHDR_FRAGMENT)
hdrlen = 8;
else if (nexthdr == NEXTHDR_AUTH)
- hdrlen = (hp->hdrlen + 2) << 2;
+ hdrlen = ipv6_authlen(hp);
else
hdrlen = ipv6_optlen(hp);
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 398e1df41406..0f82c150543b 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -414,7 +414,7 @@ find_prev_fhdr(struct sk_buff *skb, u8 *prevhdrp, int *prevhoff, int *fhoff)
if (skb_copy_bits(skb, start, &hdr, sizeof(hdr)))
BUG();
if (nexthdr == NEXTHDR_AUTH)
- hdrlen = (hdr.hdrlen+2)<<2;
+ hdrlen = ipv6_authlen(&hdr);
else
hdrlen = ipv6_optlen(&hdr);
diff --git a/net/ipv6/netfilter/nf_log_ipv6.c b/net/ipv6/netfilter/nf_log_ipv6.c
index 549c51156d5d..f53bd8f01219 100644
--- a/net/ipv6/netfilter/nf_log_ipv6.c
+++ b/net/ipv6/netfilter/nf_log_ipv6.c
@@ -155,7 +155,7 @@ static void dump_ipv6_packet(struct net *net, struct nf_log_buf *m,
}
- hdrlen = (hp->hdrlen+2)<<2;
+ hdrlen = ipv6_authlen(hp);
break;
case IPPROTO_ESP:
if (logflags & NF_LOG_IPOPT) {