X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fcore%2Ffilter.c;h=5b4486a60cf6bca668bf4f5e7232d6df1a37dbb9;hb=d90125bfe958ed0451c6b98f831c86aba08b43d5;hp=a52665f752240a6e48300d89403d1706675c6ee5;hpb=fb7ffeb11bb7e9e75dc83ff67a4925c270e0fa3c;p=linux-2.6

diff --git a/net/core/filter.c b/net/core/filter.c
index a52665f752..5b4486a60c 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -34,6 +34,7 @@
 #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 */
@@ -64,7 +65,7 @@ static inline void *load_pointer(struct sk_buff *skb, int k,
 }
 
 /**
- *	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
@@ -74,13 +75,12 @@ static inline void *load_pointer(struct sk_buff *skb, int k,
  * 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;
@@ -175,19 +175,19 @@ unsigned int sk_run_filter(struct sk_buff *skb, struct sock_filter *filter, int
 			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;
@@ -374,7 +374,7 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
 		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;
@@ -384,7 +384,7 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
 		}
 	}
 
-        return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
+	return (BPF_CLASS(filter[flen - 1].code) == BPF_RET) ? 0 : -EINVAL;
 }
 
 /**
@@ -404,8 +404,8 @@ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
 	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)