#include <linux/timer.h>
#include <asm/system.h>
#include <asm/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/filter.h>
/* No hurry in this branch */
}
/**
- * sk_run_filter - run a filter on a socket
+ * sk_run_filter - run a filter on a socket
* @skb: buffer to run the filter on
* @filter: filter to apply
* @flen: length of filter
* filtering, filter is the array of filter instructions, and
* len is the number of filter blocks in the array.
*/
-
unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int flen)
{
struct sock_filter *fentry; /* We walk down these */
void *ptr;
- u32 A = 0; /* Accumulator */
- u32 X = 0; /* Index Register */
+ u32 A = 0; /* Accumulator */
+ u32 X = 0; /* Index Register */
u32 mem[BPF_MEMWORDS]; /* Scratch Memory Store */
u32 tmp;
int k;
continue;
case BPF_LD|BPF_W|BPF_ABS:
k = fentry->k;
- load_w:
+load_w:
ptr = load_pointer(skb, k, 4, &tmp);
if (ptr != NULL) {
- A = ntohl(*(u32 *)ptr);
+ A = ntohl(get_unaligned((u32 *)ptr));
continue;
}
break;
case BPF_LD|BPF_H|BPF_ABS:
k = fentry->k;
- load_h:
+load_h:
ptr = load_pointer(skb, k, 2, &tmp);
if (ptr != NULL) {
- A = ntohs(*(u16 *)ptr);
+ A = ntohs(get_unaligned((u16 *)ptr));
continue;
}
break;
case BPF_JMP|BPF_JSET|BPF_K:
case BPF_JMP|BPF_JSET|BPF_X:
/* for conditionals both must be safe */
- if (pc + ftest->jt + 1 >= flen ||
+ if (pc + ftest->jt + 1 >= flen ||
pc + ftest->jf + 1 >= flen)
return -EINVAL;
break;
}
}
- return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
+ return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
}
/**
int err;
/* Make sure new filter is there and in the right amounts. */
- if (fprog->filter == NULL)
- return -EINVAL;
+ if (fprog->filter == NULL)
+ return -EINVAL;
fp = sock_kmalloc(sk, fsize+sizeof(*fp), GFP_KERNEL);
if (!fp)