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Commit 9b48295e authored by Hideaki Yoshifuji's avatar Hideaki Yoshifuji Committed by David S. Miller
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[IPSEC]: Use of "sizeof" for header sizes, part II

parent 144894bc
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Showing with 26 additions and 30 deletions
include/linux/ip.h
View file @ 9b48295e
......@@ -188,13 +188,13 @@ struct ip_auth_hdr {
__u16 reserved;
__u32 spi;
__u32 seq_no; /* Sequence number */
__u8 auth_data[4]; /* Variable len but >=4. Mind the 64 bit alignment! */
__u8 auth_data[0]; /* Variable len but >=4. Mind the 64 bit alignment! */
};
struct ip_esp_hdr {
__u32 spi;
__u32 seq_no; /* Sequence number */
__u8 enc_data[8]; /* Variable len but >=8. Mind the 64 bit alignment! */
__u8 enc_data[0]; /* Variable len but >=8. Mind the 64 bit alignment! */
};
#endif /* _LINUX_IP_H */
include/linux/ipv6.h
View file @ 9b48295e
......@@ -80,13 +80,13 @@ struct ipv6_auth_hdr {
__u16 reserved;
__u32 spi;
__u32 seq_no; /* Sequence number */
__u8 auth_data[4]; /* Length variable but >=4. Mind the 64 bit alignment! */
__u8 auth_data[0]; /* Length variable but >=4. Mind the 64 bit alignment! */
};
struct ipv6_esp_hdr {
__u32 spi;
__u32 seq_no; /* Sequence number */
__u8 enc_data[8]; /* Length variable but >=8. Mind the 64 bit alignment! */
__u8 enc_data[0]; /* Length variable but >=8. Mind the 64 bit alignment! */
};
/*
......
net/ipv4/ah.c
View file @ 9b48295e
......@@ -9,8 +9,6 @@
#include <asm/scatterlist.h>
#define AH_HLEN_NOICV 12
/* Clear mutable options and find final destination to substitute
* into IP header for icv calculation. Options are already checked
* for validity, so paranoia is not required. */
......@@ -116,8 +114,8 @@ static int ah_output(struct sk_buff *skb)
ah->nexthdr = iph->protocol;
}
ahp = x->data;
ah->hdrlen = (XFRM_ALIGN8(ahp->icv_trunc_len +
AH_HLEN_NOICV) >> 2) - 2;
ah->hdrlen = (XFRM_ALIGN8(sizeof(struct ip_auth_hdr) +
ahp->icv_trunc_len) >> 2) - 2;
ah->reserved = 0;
ah->spi = x->id.spi;
......@@ -169,8 +167,8 @@ int ah_input(struct xfrm_state *x, struct sk_buff *skb)
ahp = x->data;
ah_hlen = (ah->hdrlen + 2) << 2;
if (ah_hlen != XFRM_ALIGN8(ahp->icv_full_len + AH_HLEN_NOICV) &&
ah_hlen != XFRM_ALIGN8(ahp->icv_trunc_len + AH_HLEN_NOICV))
if (ah_hlen != XFRM_ALIGN8(sizeof(struct ip_auth_hdr) + ahp->icv_full_len) &&
ah_hlen != XFRM_ALIGN8(sizeof(struct ip_auth_hdr) + ahp->icv_trunc_len))
goto out;
if (!pskb_may_pull(skb, ah_hlen))
......@@ -286,7 +284,7 @@ static int ah_init_state(struct xfrm_state *x, void *args)
if (!ahp->work_icv)
goto error;
x->props.header_len = XFRM_ALIGN8(ahp->icv_trunc_len + AH_HLEN_NOICV);
x->props.header_len = XFRM_ALIGN8(sizeof(struct ip_auth_hdr) + ahp->icv_trunc_len);
if (x->props.mode)
x->props.header_len += sizeof(struct iphdr);
x->data = ahp;
......
net/ipv4/esp.c
View file @ 9b48295e
......@@ -134,7 +134,7 @@ int esp_output(struct sk_buff *skb)
if (esp->auth.icv_full_len) {
esp->auth.icv(esp, skb, (u8*)esph-skb->data,
8+esp->conf.ivlen+clen, trailer->tail);
sizeof(struct ip_esp_hdr) + esp->conf.ivlen+clen, trailer->tail);
pskb_put(skb, trailer, alen);
}
......@@ -171,7 +171,7 @@ int esp_input(struct xfrm_state *x, struct sk_buff *skb)
struct sk_buff *trailer;
int blksize = crypto_tfm_alg_blocksize(esp->conf.tfm);
int alen = esp->auth.icv_trunc_len;
int elen = skb->len - 8 - esp->conf.ivlen - alen;
int elen = skb->len - sizeof(struct ip_esp_hdr) - esp->conf.ivlen - alen;
int nfrags;
if (!pskb_may_pull(skb, sizeof(struct ip_esp_hdr)))
......@@ -220,7 +220,7 @@ int esp_input(struct xfrm_state *x, struct sk_buff *skb)
if (!sg)
goto out;
}
skb_to_sgvec(skb, sg, 8+esp->conf.ivlen, elen);
skb_to_sgvec(skb, sg, sizeof(struct ip_esp_hdr) + esp->conf.ivlen, elen);
crypto_cipher_decrypt(esp->conf.tfm, sg, sg, elen);
if (unlikely(sg != sgbuf))
kfree(sg);
......@@ -237,8 +237,8 @@ int esp_input(struct xfrm_state *x, struct sk_buff *skb)
iph->protocol = nexthdr[1];
pskb_trim(skb, skb->len - alen - padlen - 2);
memcpy(workbuf, skb->nh.raw, iph->ihl*4);
skb->h.raw = skb_pull(skb, 8 + esp->conf.ivlen);
skb->nh.raw += 8 + esp->conf.ivlen;
skb->h.raw = skb_pull(skb, sizeof(struct ip_esp_hdr) + esp->conf.ivlen);
skb->nh.raw += sizeof(struct ip_esp_hdr) + esp->conf.ivlen;
memcpy(skb->nh.raw, workbuf, iph->ihl*4);
skb->nh.iph->tot_len = htons(skb->len);
}
......@@ -365,7 +365,7 @@ int esp_init_state(struct xfrm_state *x, void *args)
get_random_bytes(esp->conf.ivec, esp->conf.ivlen);
}
crypto_cipher_setkey(esp->conf.tfm, esp->conf.key, esp->conf.key_len);
x->props.header_len = 8 + esp->conf.ivlen;
x->props.header_len = sizeof(struct ip_esp_hdr) + esp->conf.ivlen;
if (x->props.mode)
x->props.header_len += sizeof(struct iphdr);
x->data = esp;
......
net/ipv6/ah6.c
View file @ 9b48295e
......@@ -36,8 +36,6 @@
#include <net/xfrm.h>
#include <asm/scatterlist.h>
#define AH_HLEN_NOICV 12
/* XXX no ipv6 ah specific */
#define NIP6(addr) \
ntohs((addr).s6_addr16[0]),\
......@@ -110,8 +108,8 @@ int ah6_output(struct sk_buff *skb)
skb->nh.ipv6h->hop_limit = 0;
ahp = x->data;
ah->hdrlen = (XFRM_ALIGN8(ahp->icv_trunc_len +
AH_HLEN_NOICV) >> 2) - 2;
ah->hdrlen = (XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) +
ahp->icv_trunc_len) >> 2) - 2;
ah->reserved = 0;
ah->spi = x->id.spi;
......@@ -165,8 +163,8 @@ int ah6_input(struct xfrm_state *x, struct sk_buff *skb)
ahp = x->data;
ah_hlen = (ah->hdrlen + 2) << 2;
if (ah_hlen != XFRM_ALIGN8(ahp->icv_full_len + AH_HLEN_NOICV) &&
ah_hlen != XFRM_ALIGN8(ahp->icv_trunc_len + AH_HLEN_NOICV))
if (ah_hlen != XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) + ahp->icv_full_len) &&
ah_hlen != XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) + ahp->icv_trunc_len))
goto out;
if (!pskb_may_pull(skb, ah_hlen))
......@@ -285,7 +283,7 @@ static int ah6_init_state(struct xfrm_state *x, void *args)
if (!ahp->work_icv)
goto error;
x->props.header_len = XFRM_ALIGN8(ahp->icv_trunc_len + AH_HLEN_NOICV);
x->props.header_len = XFRM_ALIGN8(sizeof(struct ipv6_auth_hdr) + ahp->icv_trunc_len);
if (x->props.mode)
x->props.header_len += sizeof(struct ipv6hdr);
x->data = ahp;
......
net/ipv6/esp6.c
View file @ 9b48295e
......@@ -232,7 +232,7 @@ int esp6_output(struct sk_buff *skb)
if (esp->auth.icv_full_len) {
esp->auth.icv(esp, skb, (u8*)esph-skb->data,
8+esp->conf.ivlen+clen, trailer->tail);
sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen+clen, trailer->tail);
pskb_put(skb, trailer, alen);
}
......@@ -262,7 +262,7 @@ int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
struct sk_buff *trailer;
int blksize = crypto_tfm_alg_blocksize(esp->conf.tfm);
int alen = esp->auth.icv_trunc_len;
int elen = skb->len - 8 - esp->conf.ivlen - alen;
int elen = skb->len - sizeof(struct ipv6_esp_hdr) - esp->conf.ivlen - alen;
int hdr_len = skb->h.raw - skb->nh.raw;
int nfrags;
......@@ -319,7 +319,7 @@ int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
if (!sg)
goto out;
}
skb_to_sgvec(skb, sg, 8+esp->conf.ivlen, elen);
skb_to_sgvec(skb, sg, sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen, elen);
crypto_cipher_decrypt(esp->conf.tfm, sg, sg, elen);
if (unlikely(sg != sgbuf))
kfree(sg);
......@@ -338,8 +338,8 @@ int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
ret_nexthdr = ((struct ipv6hdr*)tmp_hdr)->nexthdr = nexthdr[1];
pskb_trim(skb, skb->len - alen - padlen - 2);
skb->h.raw = skb_pull(skb, 8 + esp->conf.ivlen);
skb->nh.raw += 8 + esp->conf.ivlen;
skb->h.raw = skb_pull(skb, sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen);
skb->nh.raw += sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen;
memcpy(skb->nh.raw, tmp_hdr, hdr_len);
}
kfree(tmp_hdr);
......@@ -466,7 +466,7 @@ int esp6_init_state(struct xfrm_state *x, void *args)
get_random_bytes(esp->conf.ivec, esp->conf.ivlen);
}
crypto_cipher_setkey(esp->conf.tfm, esp->conf.key, esp->conf.key_len);
x->props.header_len = 8 + esp->conf.ivlen;
x->props.header_len = sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen;
if (x->props.mode)
x->props.header_len += sizeof(struct ipv6hdr);
x->data = esp;
......
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