xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[IPSEC]: Use IPv6 calling convention as the convention for x->mode->output

Browse Source 
The IPv6 calling convention for x->mode->output is more general and could
help an eventual protocol-generic x->type->output implementation.  This
patch adopts it for IPv4 as well and modifies the IPv4 type output functions
accordingly.

It also rewrites the IPv6 mac/transport header calculation to be based off
the network header where practical.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu
2007-10-10 15:44:44 -07:00
committed by David S. Miller
parent 7b277b1a5f
commit 37fedd3aab
11 changed files with 44 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
net/ipv4/ipcomp.c
View File

@@ -98,10 +98,10 @@ out:
static int ipcomp_compress(struct xfrm_state *x, struct sk_buff *skb)
{
struct ipcomp_data *ipcd = x->data;
const int ihlen = ip_hdrlen(skb);
const int ihlen = skb_transport_offset(skb);
const int plen = skb->len - ihlen;
int dlen = IPCOMP_SCRATCH_SIZE;
u8 *start = skb->data + ihlen;
u8 *start = skb_transport_header(skb);
const int cpu = get_cpu();
u8 *scratch = *per_cpu_ptr(ipcomp_scratches, cpu);
struct crypto_comp *tfm = *per_cpu_ptr(ipcd->tfms, cpu);
@@ -154,11 +154,11 @@ static int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb)
/* Install ipcomp header, convert into ipcomp datagram. */
iph->tot_len = htons(skb->len);
ipch = (struct ip_comp_hdr *)((char *)iph + iph->ihl * 4);
ipch->nexthdr = iph->protocol;
ipch = (struct ip_comp_hdr *)skb_transport_header(skb);
ipch->nexthdr = *skb_mac_header(skb);
ipch->flags = 0;
ipch->cpi = htons((u16 )ntohl(x->id.spi));
iph->protocol = IPPROTO_COMP;
*skb_mac_header(skb) = IPPROTO_COMP;
ip_send_check(iph);
return 0;