netfilter endian regressions

no real bugs, just misannotations cropping up

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 files changed, 19 insertions, 16 deletions

diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index e848d8d6292f..deab27facbad 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -77,7 +77,8 @@ static inline unsigned int
 hash_by_src(const struct nf_conntrack_tuple *tuple)
 {
         /* Original src, to ensure we map it consistently if poss. */
-        return jhash_3words((__force u32)tuple->src.u3.ip, tuple->src.u.all,
+        return jhash_3words((__force u32)tuple->src.u3.ip,
+                            (__force u32)tuple->src.u.all,
                             tuple->dst.protonum, 0) % nf_nat_htable_size;
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_rule.c b/net/ipv4/netfilter/nf_nat_rule.c
index 0f45427e5fdc..76ec59ae524d 100644
--- a/net/ipv4/netfilter/nf_nat_rule.c
+++ b/net/ipv4/netfilter/nf_nat_rule.c
@@ -192,7 +192,7 @@ alloc_null_binding_confirmed(struct nf_conn *ct, unsigned int hooknum)
                 = (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC
                    ? ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip
                    : ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip);
-        u_int16_t all
+        __be16 all
                 = (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC
                    ? ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.all
                    : ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u.all);
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index aa086c83af80..0fe11889ce14 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -79,7 +79,8 @@ static u_int32_t __hash_conntrack(const struct nf_conntrack_tuple *tuple,
         a = jhash2(tuple->src.u3.all, ARRAY_SIZE(tuple->src.u3.all),
                    (tuple->src.l3num << 16) | tuple->dst.protonum);
         b = jhash2(tuple->dst.u3.all, ARRAY_SIZE(tuple->dst.u3.all),
-                   (tuple->src.u.all << 16) | tuple->dst.u.all);
+                   ((__force __u16)tuple->src.u.all << 16) |
+                    (__force __u16)tuple->dst.u.all);
 
         return jhash_2words(a, b, rnd) % size;
 }
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index 1aa6229ca99f..eb6695dcd73b 100644
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -80,7 +80,7 @@ static unsigned int nf_ct_expect_dst_hash(const struct nf_conntrack_tuple *tuple
 
         return jhash2(tuple->dst.u3.all, ARRAY_SIZE(tuple->dst.u3.all),
                       (((tuple->dst.protonum ^ tuple->src.l3num) << 16) |
-                       tuple->dst.u.all) ^ nf_ct_expect_hash_rnd) %
+                       (__force __u16)tuple->dst.u.all) ^ nf_ct_expect_hash_rnd) %
                nf_ct_expect_hsize;
 }
 
@@ -259,8 +259,8 @@ void nf_ct_expect_init(struct nf_conntrack_expect *exp, int family,
         }
 
         if (src) {
-                exp->tuple.src.u.all = (__force u16)*src;
-                exp->mask.src.u.all = 0xFFFF;
+                exp->tuple.src.u.all = *src;
+                exp->mask.src.u.all = htons(0xFFFF);
         } else {
                 exp->tuple.src.u.all = 0;
                 exp->mask.src.u.all = 0;
@@ -272,7 +272,7 @@ void nf_ct_expect_init(struct nf_conntrack_expect *exp, int family,
                 memset((void *)&exp->tuple.dst.u3 + len, 0x00,
                        sizeof(exp->tuple.dst.u3) - len);
 
-        exp->tuple.dst.u.all = (__force u16)*dst;
+        exp->tuple.dst.u.all = *dst;
 }
 EXPORT_SYMBOL_GPL(nf_ct_expect_init);
 
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index ca10df40784f..96aa637c0932 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -39,7 +39,7 @@ static int nf_ct_helper_vmalloc;
 static unsigned int helper_hash(const struct nf_conntrack_tuple *tuple)
 {
         return (((tuple->src.l3num << 8) | tuple->dst.protonum) ^
-                tuple->src.u.all) % nf_ct_helper_hsize;
+                (__force __u16)tuple->src.u.all) % nf_ct_helper_hsize;
 }
 
 struct nf_conntrack_helper *
diff --git a/net/netfilter/xt_connlimit.c b/net/netfilter/xt_connlimit.c
index 3335dd5be962..06cff1d13690 100644
--- a/net/netfilter/xt_connlimit.c
+++ b/net/netfilter/xt_connlimit.c
@@ -42,13 +42,13 @@ struct xt_connlimit_data {
 static u_int32_t connlimit_rnd;
 static bool connlimit_rnd_inited;
 
-static inline unsigned int connlimit_iphash(u_int32_t addr)
+static inline unsigned int connlimit_iphash(__be32 addr)
 {
         if (unlikely(!connlimit_rnd_inited)) {
                 get_random_bytes(&connlimit_rnd, sizeof(connlimit_rnd));
                 connlimit_rnd_inited = true;
         }
-        return jhash_1word(addr, connlimit_rnd) & 0xFF;
+        return jhash_1word((__force __u32)addr, connlimit_rnd) & 0xFF;
 }
 
 static inline unsigned int
@@ -66,7 +66,7 @@ connlimit_iphash6(const union nf_conntrack_address *addr,
         for (i = 0; i < ARRAY_SIZE(addr->ip6); ++i)
                 res.ip6[i] = addr->ip6[i] & mask->ip6[i];
 
-        return jhash2(res.ip6, ARRAY_SIZE(res.ip6), connlimit_rnd) & 0xFF;
+        return jhash2((u32 *)res.ip6, ARRAY_SIZE(res.ip6), connlimit_rnd) & 0xFF;
 }
 
 static inline bool already_closed(const struct nf_conn *conn)
diff --git a/net/netfilter/xt_u32.c b/net/netfilter/xt_u32.c
index 04b677ae8dae..74f9b14c012f 100644
--- a/net/netfilter/xt_u32.c
+++ b/net/netfilter/xt_u32.c
@@ -21,6 +21,7 @@ static bool u32_match_it(const struct xt_u32 *data,
         unsigned int nnums;
         unsigned int nvals;
         unsigned int i;
+        __be32 n;
         u_int32_t pos;
         u_int32_t val;
         u_int32_t at;
@@ -38,9 +39,9 @@ static bool u32_match_it(const struct xt_u32 *data,
                 if (skb->len < 4 || pos > skb->len - 4);
                         return false;
 
-                ret   = skb_copy_bits(skb, pos, &val, sizeof(val));
+                ret   = skb_copy_bits(skb, pos, &n, sizeof(n));
                 BUG_ON(ret < 0);
-                val   = ntohl(val);
+                val   = ntohl(n);
                 nnums = ct->nnums;
 
                 /* Inner loop runs over "&", "<<", ">>" and "@" operands */
@@ -65,10 +66,10 @@ static bool u32_match_it(const struct xt_u32 *data,
                                     pos > skb->len - at - 4)
                                         return false;
 
-                                ret = skb_copy_bits(skb, at + pos, &val,
-                                                    sizeof(val));
+                                ret = skb_copy_bits(skb, at + pos, &n,
+                                                    sizeof(n));
                                 BUG_ON(ret < 0);
-                                val = ntohl(val);
+                                val = ntohl(n);
                                 break;
                         }
                 }