skb = kmem_cache_alloc_node(cache, gfp_mask & ~__GFP_DMA, node);
if (!skb)
goto out;
+ prefetchw(skb);
size = SKB_DATA_ALIGN(size);
data = kmalloc_node_track_caller(size + sizeof(struct skb_shared_info),
gfp_mask, node);
if (!data)
goto nodata;
+ prefetchw(data + size);
/*
* Only clear those fields we need to clear, not those that we will
/* make sure we initialize shinfo sequentially */
shinfo = skb_shinfo(skb);
+ memset(shinfo, 0, offsetof(struct skb_shared_info, dataref));
atomic_set(&shinfo->dataref, 1);
- shinfo->nr_frags = 0;
- shinfo->gso_size = 0;
- shinfo->gso_segs = 0;
- shinfo->gso_type = 0;
- shinfo->ip6_frag_id = 0;
- shinfo->tx_flags.flags = 0;
- skb_frag_list_init(skb);
- memset(&shinfo->hwtstamps, 0, sizeof(shinfo->hwtstamps));
if (fclone) {
struct sk_buff *child = skb + 1;
* reference count dropping and cleans up the skbuff as if it
* just came from __alloc_skb().
*/
-int skb_recycle_check(struct sk_buff *skb, int skb_size)
+bool skb_recycle_check(struct sk_buff *skb, int skb_size)
{
struct skb_shared_info *shinfo;
if (irqs_disabled())
- return 0;
+ return false;
if (skb_is_nonlinear(skb) || skb->fclone != SKB_FCLONE_UNAVAILABLE)
- return 0;
+ return false;
skb_size = SKB_DATA_ALIGN(skb_size + NET_SKB_PAD);
if (skb_end_pointer(skb) - skb->head < skb_size)
- return 0;
+ return false;
if (skb_shared(skb) || skb_cloned(skb))
- return 0;
+ return false;
skb_release_head_state(skb);
+
shinfo = skb_shinfo(skb);
+ memset(shinfo, 0, offsetof(struct skb_shared_info, dataref));
atomic_set(&shinfo->dataref, 1);
- shinfo->nr_frags = 0;
- shinfo->gso_size = 0;
- shinfo->gso_segs = 0;
- shinfo->gso_type = 0;
- shinfo->ip6_frag_id = 0;
- shinfo->tx_flags.flags = 0;
- skb_frag_list_init(skb);
- memset(&shinfo->hwtstamps, 0, sizeof(shinfo->hwtstamps));
memset(skb, 0, offsetof(struct sk_buff, tail));
skb->data = skb->head + NET_SKB_PAD;
skb_reset_tail_pointer(skb);
- return 1;
+ return true;
}
EXPORT_SYMBOL(skb_recycle_check);
new->transport_header = old->transport_header;
new->network_header = old->network_header;
new->mac_header = old->mac_header;
- skb_dst_set(new, dst_clone(skb_dst(old)));
+ skb_dst_copy(new, old);
new->rxhash = old->rxhash;
#ifdef CONFIG_XFRM
new->sp = secpath_get(old->sp);
*NAPI_GRO_CB(nskb) = *NAPI_GRO_CB(p);
skb_shinfo(nskb)->frag_list = p;
skb_shinfo(nskb)->gso_size = pinfo->gso_size;
+ pinfo->gso_size = 0;
skb_header_release(p);
nskb->prev = p;
memset(serr, 0, sizeof(*serr));
serr->ee.ee_errno = ENOMSG;
serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;
+
+ bh_lock_sock(sk);
err = sock_queue_err_skb(sk, skb);
+ bh_unlock_sock(sk);
+
if (err)
kfree_skb(skb);
}