Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [BRIDGE]: Unaligned access when comparing ethernet addresses
  [SCTP]: Unmap v4mapped addresses during SCTP_BINDX_REM_ADDR operation.
  [SCTP]: Fix assertion (!atomic_read(&sk->sk_rmem_alloc)) failed message
  [NET]: Set a separate lockdep class for neighbour table's proxy_queue
  [NET]: Fix UDP checksum issue in net poll mode.
  [KEY]: Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.
  [NET]: Get rid of alloc_skb_from_cache

8 files changed, 150 insertions, 81 deletions

diff --git a/arch/x86_64/kernel/functionlist b/arch/x86_64/kernel/functionlist
index 01fa23580c85..7ae18ec12454 100644
--- a/arch/x86_64/kernel/functionlist
+++ b/arch/x86_64/kernel/functionlist
@@ -514,7 +514,6 @@
 *(.text.dentry_open)
 *(.text.dentry_iput)
 *(.text.bio_alloc)
-*(.text.alloc_skb_from_cache)
 *(.text.wait_on_page_bit)
 *(.text.vfs_readdir)
 *(.text.vfs_lstat)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 82f43ad478c7..5992f65b4184 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -346,9 +346,6 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size,
         return __alloc_skb(size, priority, 1, -1);
 }
 
-extern struct sk_buff *alloc_skb_from_cache(struct kmem_cache *cp,
-                                            unsigned int size,
-                                            gfp_t priority);
 extern void            kfree_skbmem(struct sk_buff *skb);
 extern struct sk_buff *skb_clone(struct sk_buff *skb,
                                  gfp_t priority);
@@ -622,6 +619,13 @@ static inline void skb_queue_head_init(struct sk_buff_head *list)
         list->qlen = 0;
 }
 
+static inline void skb_queue_head_init_class(struct sk_buff_head *list,
+                struct lock_class_key *class)
+{
+        skb_queue_head_init(list);
+        lockdep_set_class(&list->lock, class);
+}
+
 /*
  *      Insert an sk_buff at the start of a list.
  *
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 58d13f2bd121..a285897a2fb4 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -126,7 +126,9 @@ void br_stp_disable_port(struct net_bridge_port *p)
 /* called under bridge lock */
 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr)
 {
-        unsigned char oldaddr[6];
+        /* should be aligned on 2 bytes for compare_ether_addr() */
+        unsigned short oldaddr_aligned[ETH_ALEN >> 1];
+        unsigned char *oldaddr = (unsigned char *)oldaddr_aligned;
         struct net_bridge_port *p;
         int wasroot;
 
@@ -151,11 +153,14 @@ void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr)
                 br_become_root_bridge(br);
 }
 
-static const unsigned char br_mac_zero[6];
+/* should be aligned on 2 bytes for compare_ether_addr() */
+static const unsigned short br_mac_zero_aligned[ETH_ALEN >> 1];
 
 /* called under bridge lock */
 void br_stp_recalculate_bridge_id(struct net_bridge *br)
 {
+        const unsigned char *br_mac_zero =
+                        (const unsigned char *)br_mac_zero_aligned;
         const unsigned char *addr = br_mac_zero;
         struct net_bridge_port *p;
 
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index cfc60019cf92..841e3f32cab1 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1331,6 +1331,8 @@ void neigh_parms_destroy(struct neigh_parms *parms)
         kfree(parms);
 }
 
+static struct lock_class_key neigh_table_proxy_queue_class;
+
 void neigh_table_init_no_netlink(struct neigh_table *tbl)
 {
         unsigned long now = jiffies;
@@ -1379,7 +1381,8 @@ void neigh_table_init_no_netlink(struct neigh_table *tbl)
         init_timer(&tbl->proxy_timer);
         tbl->proxy_timer.data     = (unsigned long)tbl;
         tbl->proxy_timer.function = neigh_proxy_process;
-        skb_queue_head_init(&tbl->proxy_queue);
+        skb_queue_head_init_class(&tbl->proxy_queue,
+                        &neigh_table_proxy_queue_class);
 
         tbl->last_flush = now;
         tbl->last_rand  = now + tbl->parms.reachable_time * 20;
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index da1019451ccb..4581ece48bb2 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -471,6 +471,13 @@ int __netpoll_rx(struct sk_buff *skb)
         if (skb->len < len || len < iph->ihl*4)
                 goto out;
 
+        /*
+         * Our transport medium may have padded the buffer out.
+         * Now We trim to the true length of the frame.
+         */
+        if (pskb_trim_rcsum(skb, len))
+                goto out;
+
         if (iph->protocol != IPPROTO_UDP)
                 goto out;
 
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 87573ae35b02..336958fbbcb2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -197,61 +197,6 @@ nodata:
 }
 
 /**
- *      alloc_skb_from_cache    -       allocate a network buffer
- *      @cp: kmem_cache from which to allocate the data area
- *           (object size must be big enough for @size bytes + skb overheads)
- *      @size: size to allocate
- *      @gfp_mask: allocation mask
- *
- *      Allocate a new &sk_buff. The returned buffer has no headroom and
- *      tail room of size bytes. The object has a reference count of one.
- *      The return is the buffer. On a failure the return is %NULL.
- *
- *      Buffers may only be allocated from interrupts using a @gfp_mask of
- *      %GFP_ATOMIC.
- */
-struct sk_buff *alloc_skb_from_cache(struct kmem_cache *cp,
-                                     unsigned int size,
-                                     gfp_t gfp_mask)
-{
-        struct sk_buff *skb;
-        u8 *data;
-
-        /* Get the HEAD */
-        skb = kmem_cache_alloc(skbuff_head_cache,
-                               gfp_mask & ~__GFP_DMA);
-        if (!skb)
-                goto out;
-
-        /* Get the DATA. */
-        size = SKB_DATA_ALIGN(size);
-        data = kmem_cache_alloc(cp, gfp_mask);
-        if (!data)
-                goto nodata;
-
-        memset(skb, 0, offsetof(struct sk_buff, truesize));
-        skb->truesize = size + sizeof(struct sk_buff);
-        atomic_set(&skb->users, 1);
-        skb->head = data;
-        skb->data = data;
-        skb->tail = data;
-        skb->end  = data + size;
-
-        atomic_set(&(skb_shinfo(skb)->dataref), 1);
-        skb_shinfo(skb)->nr_frags  = 0;
-        skb_shinfo(skb)->gso_size = 0;
-        skb_shinfo(skb)->gso_segs = 0;
-        skb_shinfo(skb)->gso_type = 0;
-        skb_shinfo(skb)->frag_list = NULL;
-out:
-        return skb;
-nodata:
-        kmem_cache_free(skbuff_head_cache, skb);
-        skb = NULL;
-        goto out;
-}
-
-/**
  *      __netdev_alloc_skb - allocate an skbuff for rx on a specific device
  *      @dev: network device to receive on
  *      @length: length to allocate
diff --git a/net/key/af_key.c b/net/key/af_key.c
index a4e7e2db0ff3..cf77930ee516 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -630,6 +630,35 @@ pfkey_sockaddr_size(sa_family_t family)
         /* NOTREACHED */
 }
 
+static inline int pfkey_mode_from_xfrm(int mode)
+{
+        switch(mode) {
+        case XFRM_MODE_TRANSPORT:
+                return IPSEC_MODE_TRANSPORT;
+        case XFRM_MODE_TUNNEL:
+                return IPSEC_MODE_TUNNEL;
+        case XFRM_MODE_BEET:
+                return IPSEC_MODE_BEET;
+        default:
+                return -1;
+        }
+}
+
+static inline int pfkey_mode_to_xfrm(int mode)
+{
+        switch(mode) {
+        case IPSEC_MODE_ANY:    /*XXX*/
+        case IPSEC_MODE_TRANSPORT:
+                return XFRM_MODE_TRANSPORT;
+        case IPSEC_MODE_TUNNEL:
+                return XFRM_MODE_TUNNEL;
+        case IPSEC_MODE_BEET:
+                return XFRM_MODE_BEET;
+        default:
+                return -1;
+        }
+}
+
 static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys, int hsc)
 {
         struct sk_buff *skb;
@@ -651,6 +680,7 @@ static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys,
         int encrypt_key_size = 0;
         int sockaddr_size;
         struct xfrm_encap_tmpl *natt = NULL;
+        int mode;
 
         /* address family check */
         sockaddr_size = pfkey_sockaddr_size(x->props.family);
@@ -928,7 +958,11 @@ static struct sk_buff * pfkey_xfrm_state2msg(struct xfrm_state *x, int add_keys,
         sa2 = (struct sadb_x_sa2 *)  skb_put(skb, sizeof(struct sadb_x_sa2));
         sa2->sadb_x_sa2_len = sizeof(struct sadb_x_sa2)/sizeof(uint64_t);
         sa2->sadb_x_sa2_exttype = SADB_X_EXT_SA2;
-        sa2->sadb_x_sa2_mode = x->props.mode + 1;
+        if ((mode = pfkey_mode_from_xfrm(x->props.mode)) < 0) {
+                kfree_skb(skb);
+                return ERR_PTR(-EINVAL);
+        }
+        sa2->sadb_x_sa2_mode = mode;
         sa2->sadb_x_sa2_reserved1 = 0;
         sa2->sadb_x_sa2_reserved2 = 0;
         sa2->sadb_x_sa2_sequence = 0;
@@ -1155,9 +1189,12 @@ static struct xfrm_state * pfkey_msg2xfrm_state(struct sadb_msg *hdr,
 
         if (ext_hdrs[SADB_X_EXT_SA2-1]) {
                 struct sadb_x_sa2 *sa2 = (void*)ext_hdrs[SADB_X_EXT_SA2-1];
-                x->props.mode = sa2->sadb_x_sa2_mode;
-                if (x->props.mode)
-                        x->props.mode--;
+                int mode = pfkey_mode_to_xfrm(sa2->sadb_x_sa2_mode);
+                if (mode < 0) {
+                        err = -EINVAL;
+                        goto out;
+                }
+                x->props.mode = mode;
                 x->props.reqid = sa2->sadb_x_sa2_reqid;
         }
 
@@ -1218,7 +1255,7 @@ static int pfkey_getspi(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
         struct sadb_address *saddr, *daddr;
         struct sadb_msg *out_hdr;
         struct xfrm_state *x = NULL;
-        u8 mode;
+        int mode;
         u32 reqid;
         u8 proto;
         unsigned short family;
@@ -1233,7 +1270,9 @@ static int pfkey_getspi(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
                 return -EINVAL;
 
         if ((sa2 = ext_hdrs[SADB_X_EXT_SA2-1]) != NULL) {
-                mode = sa2->sadb_x_sa2_mode - 1;
+                mode = pfkey_mode_to_xfrm(sa2->sadb_x_sa2_mode);
+                if (mode < 0)
+                        return -EINVAL;
                 reqid = sa2->sadb_x_sa2_reqid;
         } else {
                 mode = 0;
@@ -1756,6 +1795,7 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
         struct sockaddr_in6 *sin6;
 #endif
+        int mode;
 
         if (xp->xfrm_nr >= XFRM_MAX_DEPTH)
                 return -ELOOP;
@@ -1764,7 +1804,9 @@ parse_ipsecrequest(struct xfrm_policy *xp, struct sadb_x_ipsecrequest *rq)
                 return -EINVAL;
 
         t->id.proto = rq->sadb_x_ipsecrequest_proto; /* XXX check proto */
-        t->mode = rq->sadb_x_ipsecrequest_mode-1;
+        if ((mode = pfkey_mode_to_xfrm(rq->sadb_x_ipsecrequest_mode)) < 0)
+                return -EINVAL;
+        t->mode = mode;
         if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_USE)
                 t->optional = 1;
         else if (rq->sadb_x_ipsecrequest_level == IPSEC_LEVEL_UNIQUE) {
@@ -1877,7 +1919,7 @@ static struct sk_buff * pfkey_xfrm_policy2msg_prep(struct xfrm_policy *xp)
         return skb;
 }
 
-static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, int dir)
+static int pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, int dir)
 {
         struct sadb_msg *hdr;
         struct sadb_address *addr;
@@ -2014,6 +2056,7 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
                 struct sadb_x_ipsecrequest *rq;
                 struct xfrm_tmpl *t = xp->xfrm_vec + i;
                 int req_size;
+                int mode;
 
                 req_size = sizeof(struct sadb_x_ipsecrequest);
                 if (t->mode == XFRM_MODE_TUNNEL)
@@ -2027,7 +2070,9 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
                 memset(rq, 0, sizeof(*rq));
                 rq->sadb_x_ipsecrequest_len = req_size;
                 rq->sadb_x_ipsecrequest_proto = t->id.proto;
-                rq->sadb_x_ipsecrequest_mode = t->mode+1;
+                if ((mode = pfkey_mode_from_xfrm(t->mode)) < 0)
+                        return -EINVAL;
+                mode = pfkey_mode_from_xfrm(t->mode);
                 rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_REQUIRE;
                 if (t->reqid)
                         rq->sadb_x_ipsecrequest_level = IPSEC_LEVEL_UNIQUE;
@@ -2089,6 +2134,8 @@ static void pfkey_xfrm_policy2msg(struct sk_buff *skb, struct xfrm_policy *xp, i
 
         hdr->sadb_msg_len = size / sizeof(uint64_t);
         hdr->sadb_msg_reserved = atomic_read(&xp->refcnt);
+
+        return 0;
 }
 
 static int key_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c)
@@ -2102,7 +2149,9 @@ static int key_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c
                 err = PTR_ERR(out_skb);
                 goto out;
         }
-        pfkey_xfrm_policy2msg(out_skb, xp, dir);
+        err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
+        if (err < 0)
+                return err;
 
         out_hdr = (struct sadb_msg *) out_skb->data;
         out_hdr->sadb_msg_version = PF_KEY_V2;
@@ -2327,7 +2376,9 @@ static int key_pol_get_resp(struct sock *sk, struct xfrm_policy *xp, struct sadb
                 err =  PTR_ERR(out_skb);
                 goto out;
         }
-        pfkey_xfrm_policy2msg(out_skb, xp, dir);
+        err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
+        if (err < 0)
+                goto out;
 
         out_hdr = (struct sadb_msg *) out_skb->data;
         out_hdr->sadb_msg_version = hdr->sadb_msg_version;
@@ -2409,6 +2460,7 @@ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
 {
         int err;
         struct sadb_x_ipsecrequest *rq2;
+        int mode;
 
         if (len <= sizeof(struct sadb_x_ipsecrequest) ||
             len < rq1->sadb_x_ipsecrequest_len)
@@ -2439,7 +2491,9 @@ static int ipsecrequests_to_migrate(struct sadb_x_ipsecrequest *rq1, int len,
                 return -EINVAL;
 
         m->proto = rq1->sadb_x_ipsecrequest_proto;
-        m->mode = rq1->sadb_x_ipsecrequest_mode - 1;
+        if ((mode = pfkey_mode_to_xfrm(rq1->sadb_x_ipsecrequest_mode)) < 0)
+                return -EINVAL;
+        m->mode = mode;
         m->reqid = rq1->sadb_x_ipsecrequest_reqid;
 
         return ((int)(rq1->sadb_x_ipsecrequest_len +
@@ -2579,12 +2633,15 @@ static int dump_sp(struct xfrm_policy *xp, int dir, int count, void *ptr)
         struct pfkey_dump_data *data = ptr;
         struct sk_buff *out_skb;
         struct sadb_msg *out_hdr;
+        int err;
 
         out_skb = pfkey_xfrm_policy2msg_prep(xp);
         if (IS_ERR(out_skb))
                 return PTR_ERR(out_skb);
 
-        pfkey_xfrm_policy2msg(out_skb, xp, dir);
+        err = pfkey_xfrm_policy2msg(out_skb, xp, dir);
+        if (err < 0)
+                return err;
 
         out_hdr = (struct sadb_msg *) out_skb->data;
         out_hdr->sadb_msg_version = data->hdr->sadb_msg_version;
@@ -3513,7 +3570,10 @@ static int pfkey_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
 
         for (i = 0, mp = m; i < num_bundles; i++, mp++) {
                 /* old ipsecrequest */
-                if (set_ipsecrequest(skb, mp->proto, mp->mode + 1,
+                int mode = pfkey_mode_from_xfrm(mp->mode);
+                if (mode < 0)
+                        return -EINVAL;
+                if (set_ipsecrequest(skb, mp->proto, mode,
                                      (mp->reqid ?  IPSEC_LEVEL_UNIQUE : IPSEC_LEVEL_REQUIRE),
                                      mp->reqid, mp->old_family,
                                      &mp->old_saddr, &mp->old_daddr) < 0) {
@@ -3521,7 +3581,7 @@ static int pfkey_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
                 }
 
                 /* new ipsecrequest */
-                if (set_ipsecrequest(skb, mp->proto, mp->mode + 1,
+                if (set_ipsecrequest(skb, mp->proto, mode,
                                      (mp->reqid ? IPSEC_LEVEL_UNIQUE : IPSEC_LEVEL_REQUIRE),
                                      mp->reqid, mp->new_family,
                                      &mp->new_saddr, &mp->new_daddr) < 0) {
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 536298c2eda2..a1d026f12b0e 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -627,6 +627,12 @@ int sctp_bindx_rem(struct sock *sk, struct sockaddr *addrs, int addrcnt)
                         retval = -EINVAL;
                         goto err_bindx_rem;
                 }
+
+                if (!af->addr_valid(sa_addr, sp, NULL)) {
+                        retval = -EADDRNOTAVAIL;
+                        goto err_bindx_rem;
+                }
+
                 if (sa_addr->v4.sin_port != htons(bp->port)) {
                         retval = -EINVAL;
                         goto err_bindx_rem;
@@ -5638,6 +5644,36 @@ void sctp_wait_for_close(struct sock *sk, long timeout)
         finish_wait(sk->sk_sleep, &wait);
 }
 
+static void sctp_sock_rfree_frag(struct sk_buff *skb)
+{
+        struct sk_buff *frag;
+
+        if (!skb->data_len)
+                goto done;
+
+        /* Don't forget the fragments. */
+        for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next)
+                sctp_sock_rfree_frag(frag);
+
+done:
+        sctp_sock_rfree(skb);
+}
+
+static void sctp_skb_set_owner_r_frag(struct sk_buff *skb, struct sock *sk)
+{
+        struct sk_buff *frag;
+
+        if (!skb->data_len)
+                goto done;
+
+        /* Don't forget the fragments. */
+        for (frag = skb_shinfo(skb)->frag_list; frag; frag = frag->next)
+                sctp_skb_set_owner_r_frag(frag, sk);
+
+done:
+        sctp_skb_set_owner_r(skb, sk);
+}
+
 /* Populate the fields of the newsk from the oldsk and migrate the assoc
  * and its messages to the newsk.
  */
@@ -5692,10 +5728,10 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
         sctp_skb_for_each(skb, &oldsk->sk_receive_queue, tmp) {
                 event = sctp_skb2event(skb);
                 if (event->asoc == assoc) {
-                        sctp_sock_rfree(skb);
+                        sctp_sock_rfree_frag(skb);
                         __skb_unlink(skb, &oldsk->sk_receive_queue);
                         __skb_queue_tail(&newsk->sk_receive_queue, skb);
-                        sctp_skb_set_owner_r(skb, newsk);
+                        sctp_skb_set_owner_r_frag(skb, newsk);
                 }
         }
 
@@ -5723,10 +5759,10 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
                 sctp_skb_for_each(skb, &oldsp->pd_lobby, tmp) {
                         event = sctp_skb2event(skb);
                         if (event->asoc == assoc) {
-                                sctp_sock_rfree(skb);
+                                sctp_sock_rfree_frag(skb);
                                 __skb_unlink(skb, &oldsp->pd_lobby);
                                 __skb_queue_tail(queue, skb);
-                                sctp_skb_set_owner_r(skb, newsk);
+                                sctp_skb_set_owner_r_frag(skb, newsk);
                         }
                 }
 
@@ -5738,6 +5774,16 @@ static void sctp_sock_migrate(struct sock *oldsk, struct sock *newsk,
 
         }
 
+        sctp_skb_for_each(skb, &assoc->ulpq.reasm, tmp) {
+                sctp_sock_rfree_frag(skb);
+                sctp_skb_set_owner_r_frag(skb, newsk);
+        }
+
+        sctp_skb_for_each(skb, &assoc->ulpq.lobby, tmp) {
+                sctp_sock_rfree_frag(skb);
+                sctp_skb_set_owner_r_frag(skb, newsk);
+        }
+
         /* Set the type of socket to indicate that it is peeled off from the
          * original UDP-style socket or created with the accept() call on a
          * TCP-style socket..