Displaying 2 results from an estimated 2 matches for "tun_put_pag".
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tun_put_page
2018 Nov 15
0
[PATCH net-next 2/2] tuntap: free XDP dropped packets in a batch
...xdp_rxq;
};
+struct tun_page {
+ struct page *page;
+ int count;
+};
+
struct tun_flow_entry {
struct hlist_node hash_link;
struct rcu_head rcu;
@@ -2377,9 +2382,16 @@ static void tun_sock_write_space(struct sock *sk)
kill_fasync(&tfile->fasync, SIGIO, POLL_OUT);
}
+static void tun_put_page(struct tun_page *tpage)
+{
+ if (tpage->page)
+ __page_frag_cache_drain(tpage->page, tpage->count);
+}
+
static int tun_xdp_one(struct tun_struct *tun,
struct tun_file *tfile,
- struct xdp_buff *xdp, int *flush)
+ struct xdp_buff *xdp, int *flush,
+ str...
2018 Nov 15
3
[PATCH net-next 1/2] vhost_net: mitigate page reference counting during page frag refill
We do a get_page() which involves a atomic operation. This patch tries
to mitigate a per packet atomic operation by maintaining a reference
bias which is initially USHRT_MAX. Each time a page is got, instead of
calling get_page() we decrease the bias and when we find it's time to
use a new page we will decrease the bias at one time through
__page_cache_drain_cache().
Testpmd(virtio_user +