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Date: Mon, 30 Oct 2006 10:37:05 +0000
From: Al Viro <viro@....linux.org.uk>
To: marcel@...tmann.org
Cc: linux-kernel@...r.kernel.org, torvalds@...l.org
Subject: [PATCH] bnep endianness bug: filtering by packet type
<= and => don't work well on net-endian...
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
net/bluetooth/bnep/core.c | 16 ++++++++--------
net/bluetooth/bnep/netdev.c | 11 ++++++-----
2 files changed, 14 insertions(+), 13 deletions(-)
diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index 4d3424c..4e822f0 100644
--- a/net/bluetooth/bnep/core.c
+++ b/net/bluetooth/bnep/core.c
@@ -117,14 +117,14 @@ #ifdef CONFIG_BT_BNEP_PROTO_FILTER
static inline void bnep_set_default_proto_filter(struct bnep_session *s)
{
/* (IPv4, ARP) */
- s->proto_filter[0].start = htons(0x0800);
- s->proto_filter[0].end = htons(0x0806);
+ s->proto_filter[0].start = ETH_P_IP;
+ s->proto_filter[0].end = ETH_P_ARP;
/* (RARP, AppleTalk) */
- s->proto_filter[1].start = htons(0x8035);
- s->proto_filter[1].end = htons(0x80F3);
+ s->proto_filter[1].start = ETH_P_RARP;
+ s->proto_filter[1].end = ETH_P_AARP;
/* (IPX, IPv6) */
- s->proto_filter[2].start = htons(0x8137);
- s->proto_filter[2].end = htons(0x86DD);
+ s->proto_filter[2].start = ETH_P_IPX;
+ s->proto_filter[2].end = ETH_P_IPV6;
}
#endif
@@ -150,8 +150,8 @@ #ifdef CONFIG_BT_BNEP_PROTO_FILTER
int i;
for (i = 0; i < n; i++) {
- f[i].start = get_unaligned(data++);
- f[i].end = get_unaligned(data++);
+ f[i].start = ntohs(get_unaligned(data++));
+ f[i].end = ntohs(get_unaligned(data++));
BT_DBG("proto filter start %d end %d",
f[i].start, f[i].end);
diff --git a/net/bluetooth/bnep/netdev.c b/net/bluetooth/bnep/netdev.c
index 7f7b27d..67a002a 100644
--- a/net/bluetooth/bnep/netdev.c
+++ b/net/bluetooth/bnep/netdev.c
@@ -158,14 +158,15 @@ #ifdef CONFIG_BT_BNEP_PROTO_FILTER
static inline u16 bnep_net_eth_proto(struct sk_buff *skb)
{
struct ethhdr *eh = (void *) skb->data;
+ u16 proto = ntohs(eh->h_proto);
- if (ntohs(eh->h_proto) >= 1536)
- return eh->h_proto;
+ if (proto >= 1536)
+ return proto;
- if (get_unaligned((u16 *) skb->data) == 0xFFFF)
- return htons(ETH_P_802_3);
+ if (get_unaligned((__be16 *) skb->data) == htons(0xFFFF))
+ return ETH_P_802_3;
- return htons(ETH_P_802_2);
+ return ETH_P_802_2;
}
static inline int bnep_net_proto_filter(struct sk_buff *skb, struct bnep_session *s)
--
1.4.2.GIT
-
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