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net: Fix various endianness glitches

Browse source 
Sparse can help us find endianness bugs, but we need to make some
cleanups to be able to more easily spot real bugs.

Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2010-04-20 19:06:52 -07:00 • committed by David S. Miller
commit 0eae88f31c
17 changed files with 65 additions and 61 deletions
Download patch file Download diff file Expand all files Collapse all files

3
net/ipv6/addrconf.c
View file

@ -588,7 +588,8 @@ static u32 ipv6_addr_hash(const struct in6_addr *addr)
* We perform the hash function over the last 64 bits of the address
* This will include the IEEE address token on links that support it.
*/
return jhash_2words(addr->s6_addr32[2], addr->s6_addr32[3], 0)
return jhash_2words((__force u32)addr->s6_addr32[2],
(__force u32)addr->s6_addr32[3], 0)
& (IN6_ADDR_HSIZE - 1);
}

3
net/ipv6/ip6_fib.c
View file

@ -144,7 +144,8 @@ static __inline__ __be32 addr_bit_set(void *token, int fn_bit)
* htonl(1 << ((~fn_bit)&0x1F))
* See include/asm-generic/bitops/le.h.
*/
return (1 << ((~fn_bit ^ BITOP_BE32_SWIZZLE) & 0x1f)) & addr[fn_bit >> 5];
return (__force __be32)(1 << ((~fn_bit ^ BITOP_BE32_SWIZZLE) & 0x1f)) &
addr[fn_bit >> 5];
}
static __inline__ struct fib6_node * node_alloc(void)

4
net/ipv6/tcp_ipv6.c
View file

@ -1234,12 +1234,12 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
goto drop_and_free;
/* Secret recipe starts with IP addresses */
d = &ipv6_hdr(skb)->daddr.s6_addr32[0];
d = (__force u32 *)&ipv6_hdr(skb)->daddr.s6_addr32[0];
*mess++ ^= *d++;
*mess++ ^= *d++;
*mess++ ^= *d++;
*mess++ ^= *d++;
d = &ipv6_hdr(skb)->saddr.s6_addr32[0];
d = (__force u32 *)&ipv6_hdr(skb)->saddr.s6_addr32[0];
*mess++ ^= *d++;
*mess++ ^= *d++;
*mess++ ^= *d++;

4
net/ipv6/udp.c
View file

@ -91,9 +91,9 @@ static unsigned int udp6_portaddr_hash(struct net *net,
if (ipv6_addr_any(addr6))
hash = jhash_1word(0, mix);
else if (ipv6_addr_v4mapped(addr6))
hash = jhash_1word(addr6->s6_addr32[3], mix);
hash = jhash_1word((__force u32)addr6->s6_addr32[3], mix);
else
hash = jhash2(addr6->s6_addr32, 4, mix);
hash = jhash2((__force u32 *)addr6->s6_addr32, 4, mix);
return hash ^ port;
}