UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

[NET]: net/core/filter.c: make len cover the entire packet 

As suggested by Herbert Xu:

Since we don't require anything to be in the linear packet range
anymore make len cover the entire packet.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2005-07-05 14:10:40 -07:00 committed by David S. Miller
parent 0b05b2a49e
commit 3154e540e3
1 changed files with 2 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
net/core/filter.c
View File

@ -76,10 +76,6 @@ static inline void *load_pointer(struct sk_buff *skb, int k,
int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen)
{
/* len is UNSIGNED. Byte wide insns relies only on implicit
type casts to prevent reading arbitrary memory locations.
*/
unsigned int len = skb->len-skb->data_len;
struct sock_filter *fentry; /* We walk down these */
void *ptr;
u32 A = 0; /* Accumulator */
@ -206,10 +202,10 @@ load_b:
}
return 0;
case BPF_LD|BPF_W|BPF_LEN:
A = len;
A = skb->len;
continue;
case BPF_LDX|BPF_W|BPF_LEN:
X = len;
X = skb->len;
continue;
case BPF_LD|BPF_W|BPF_IND:
k = X + fentry->k;