diff options
| author |   Peter Oskolkov <posk@google.com> | 2018-08-02 23:34:38 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-05 17:16:46 -0700 |
| commit | 385114dec8a49b5e5945e77ba7de6356106713f4 (patch) | |
| tree | 997d369a85c5277bd7bbaf55f6c0b55756bd7f47 /net/core/skbuff.c | |
| parent | ip: discard IPv4 datagrams with overlapping segments. (diff) | |
| download | linux-dev-385114dec8a49b5e5945e77ba7de6356106713f4.tar.xz linux-dev-385114dec8a49b5e5945e77ba7de6356106713f4.zip | |
net: modify skb_rbtree_purge to return the truesize of all purged skbs.
Tested: see the next patch is the series.
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 51b0a9126e12..8d574a88125d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -2858,23 +2858,27 @@ EXPORT_SYMBOL(skb_queue_purge); /** * skb_rbtree_purge - empty a skb rbtree * @root: root of the rbtree to empty + * Return value: the sum of truesizes of all purged skbs. * * Delete all buffers on an &sk_buff rbtree. Each buffer is removed from * the list and one reference dropped. This function does not take * any lock. Synchronization should be handled by the caller (e.g., TCP * out-of-order queue is protected by the socket lock). */ -void skb_rbtree_purge(struct rb_root *root) +unsigned int skb_rbtree_purge(struct rb_root *root) { struct rb_node *p = rb_first(root); + unsigned int sum = 0; while (p) { struct sk_buff *skb = rb_entry(p, struct sk_buff, rbnode); p = rb_next(p); rb_erase(&skb->rbnode, root); + sum += skb->truesize; kfree_skb(skb); } + return sum; } /** |