Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

[linux-2.6-omap-h63xx.git] / net / core / skbuff.c

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 27cfe5fe4bb9f2bf274f3eb0d67dec0616995eff..944189d96323c9944089eded7b017cb1a3050599 100644 (file)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -415,9 +415,11 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
        C(csum);
        C(local_df);
        n->cloned = 1;
+       n->hdr_len = skb->nohdr ? skb_headroom(skb) : skb->hdr_len;
        n->nohdr = 0;
        C(pkt_type);
        C(ip_summed);
+       skb_copy_queue_mapping(n, skb);
        C(priority);
 #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
        C(ipvs_property);
@@ -426,6 +428,10 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
        n->destructor = NULL;
        C(mark);
        __nf_copy(n, skb);
+#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
+    defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
+       C(nf_trace);
+#endif
 #ifdef CONFIG_NET_SCHED
        C(tc_index);
 #ifdef CONFIG_NET_CLS_ACT
@@ -459,12 +465,16 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
 #endif
        new->sk         = NULL;
        new->dev        = old->dev;
+       skb_copy_queue_mapping(new, old);
        new->priority   = old->priority;
        new->protocol   = old->protocol;
        new->dst        = dst_clone(old->dst);
 #ifdef CONFIG_INET
        new->sp         = secpath_get(old->sp);
 #endif
+       new->csum_start = old->csum_start;
+       new->csum_offset = old->csum_offset;
+       new->ip_summed = old->ip_summed;
        new->transport_header = old->transport_header;
        new->network_header   = old->network_header;
        new->mac_header       = old->mac_header;
@@ -482,6 +492,10 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
        new->destructor = NULL;
        new->mark       = old->mark;
        __nf_copy(new, old);
+#if defined(CONFIG_NETFILTER_XT_TARGET_TRACE) || \
+    defined(CONFIG_NETFILTER_XT_TARGET_TRACE_MODULE)
+       new->nf_trace   = old->nf_trace;
+#endif
 #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
        new->ipvs_property = old->ipvs_property;
 #endif
@@ -534,8 +548,6 @@ struct sk_buff *skb_copy(const struct sk_buff *skb, gfp_t gfp_mask)
        skb_reserve(n, headerlen);
        /* Set the tail pointer and length */
        skb_put(n, skb->len);
-       n->csum      = skb->csum;
-       n->ip_summed = skb->ip_summed;
 
        if (skb_copy_bits(skb, -headerlen, n->head, headerlen + skb->len))
                BUG();
@@ -578,8 +590,6 @@ struct sk_buff *pskb_copy(struct sk_buff *skb, gfp_t gfp_mask)
        skb_put(n, skb_headlen(skb));
        /* Copy the bytes */
        skb_copy_from_linear_data(skb, n->data, n->len);
-       n->csum      = skb->csum;
-       n->ip_summed = skb->ip_summed;
 
        n->truesize += skb->data_len;
        n->data_len  = skb->data_len;
@@ -675,7 +685,9 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
        skb->transport_header += off;
        skb->network_header   += off;
        skb->mac_header       += off;
+       skb->csum_start       += off;
        skb->cloned   = 0;
+       skb->hdr_len  = 0;
        skb->nohdr    = 0;
        atomic_set(&skb_shinfo(skb)->dataref, 1);
        return 0;
@@ -722,9 +734,6 @@ struct sk_buff *skb_realloc_headroom(struct sk_buff *skb, unsigned int headroom)
  *
  *     You must pass %GFP_ATOMIC as the allocation priority if this function
  *     is called from an interrupt.
- *
- *     BUG ALERT: ip_summed is not copied. Why does this work? Is it used
- *     only by netfilter in the cases when checksum is recalculated? --ANK
  */
 struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
                                int newheadroom, int newtailroom,
@@ -737,7 +746,7 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
                                      gfp_mask);
        int oldheadroom = skb_headroom(skb);
        int head_copy_len, head_copy_off;
-       int off = 0;
+       int off;
 
        if (!n)
                return NULL;
@@ -761,12 +770,13 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
 
        copy_skb_header(n, skb);
 
-#ifdef NET_SKBUFF_DATA_USES_OFFSET
        off                  = newheadroom - oldheadroom;
-#endif
+       n->csum_start       += off;
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
        n->transport_header += off;
        n->network_header   += off;
        n->mac_header       += off;
+#endif
 
        return n;
 }
@@ -1930,6 +1940,7 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
                tail = nskb;
 
                nskb->dev = skb->dev;
+               skb_copy_queue_mapping(nskb, skb);
                nskb->priority = skb->priority;
                nskb->protocol = skb->protocol;
                nskb->dst = dst_clone(skb->dst);
@@ -2008,13 +2019,13 @@ void __init skb_init(void)
                                              sizeof(struct sk_buff),
                                              0,
                                              SLAB_HWCACHE_ALIGN|SLAB_PANIC,
-                                             NULL, NULL);
+                                             NULL);
        skbuff_fclone_cache = kmem_cache_create("skbuff_fclone_cache",
                                                (2*sizeof(struct sk_buff)) +
                                                sizeof(atomic_t),
                                                0,
                                                SLAB_HWCACHE_ALIGN|SLAB_PANIC,
-                                               NULL, NULL);
+                                               NULL);
 }
 
 /**
@@ -2211,7 +2222,6 @@ EXPORT_SYMBOL(pskb_copy);
 EXPORT_SYMBOL(pskb_expand_head);
 EXPORT_SYMBOL(skb_checksum);
 EXPORT_SYMBOL(skb_clone);
-EXPORT_SYMBOL(skb_clone_fraglist);
 EXPORT_SYMBOL(skb_copy);
 EXPORT_SYMBOL(skb_copy_and_csum_bits);
 EXPORT_SYMBOL(skb_copy_and_csum_dev);