From: Prashant Bhole <prashantbhole.linux@gmail.com>
To: "David S . Miller" <davem@davemloft.net>,
"Michael S . Tsirkin" <mst@redhat.com>
Cc: Prashant Bhole <prashantbhole.linux@gmail.com>,
Jason Wang <jasowang@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jakub Kicinski <jakub.kicinski@netronome.com>,
Jesper Dangaard Brouer <hawk@kernel.org>,
John Fastabend <john.fastabend@gmail.com>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>, Andrii Nakryiko <andriin@fb.com>,
netdev@vger.kernel.org, qemu-devel@nongnu.org,
kvm@vger.kernel.org
Subject: [RFC net-next 11/18] tun: run xdp prog when tun is read from file interface
Date: Tue, 26 Nov 2019 19:07:37 +0900 [thread overview]
Message-ID: <20191126100744.5083-12-prashantbhole.linux@gmail.com> (raw)
In-Reply-To: <20191126100744.5083-1-prashantbhole.linux@gmail.com>
It handles the case when qemu performs read on tun using file
operations.
Signed-off-by: Prashant Bhole <prashantbhole.linux@gmail.com>
---
drivers/net/tun.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 084ca95358fe..639921c10e32 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2318,8 +2318,10 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile,
struct iov_iter *to,
int noblock, void *ptr)
{
+ struct xdp_frame *frame;
ssize_t ret;
int err;
+ u32 act;
tun_debug(KERN_INFO, tun, "tun_do_read\n");
@@ -2333,6 +2335,15 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile,
ptr = tun_ring_recv(tfile, noblock, &err);
if (!ptr)
return err;
+
+ if (tun_is_xdp_frame(ptr)) {
+ frame = tun_ptr_to_xdp(ptr);
+ act = tun_do_xdp_offload(tun, tfile, frame);
+ } else {
+ act = tun_do_xdp_offload_generic(tun, ptr);
+ }
+ if (act != XDP_PASS)
+ return err;
}
if (tun_is_xdp_frame(ptr)) {
--
2.20.1
next prev parent reply other threads:[~2019-11-26 10:09 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-26 10:07 [RFC net-next 00/18] virtio_net XDP offload Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 01/18] bpf: introduce bpf_prog_offload_verifier_setup() Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 02/18] net: core: rename netif_receive_generic_xdp() to do_generic_xdp_core() Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 03/18] net: core: export do_xdp_generic_core() Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 04/18] tuntap: check tun_msg_ctl type at necessary places Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 05/18] vhost_net: user tap recvmsg api to access ptr ring Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 06/18] tuntap: remove usage of ptr ring in vhost_net Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 07/18] tun: set offloaded xdp program Prashant Bhole
2019-12-01 16:35 ` David Ahern
2019-12-02 2:44 ` Jason Wang
2019-12-01 16:45 ` David Ahern
2019-12-02 2:47 ` Jason Wang
2019-12-09 0:24 ` Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 08/18] tun: run offloaded XDP program in Tx path Prashant Bhole
2019-12-01 16:39 ` David Ahern
2019-12-01 20:56 ` David Miller
2019-12-01 21:40 ` Michael S. Tsirkin
2019-12-01 21:54 ` David Miller
2019-12-02 2:56 ` Jason Wang
2019-12-02 2:45 ` Jason Wang
2019-11-26 10:07 ` [RFC net-next 09/18] tun: add a way to inject Tx path packet into Rx path Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 10/18] tun: handle XDP_TX action of offloaded program Prashant Bhole
2019-11-26 10:07 ` Prashant Bhole [this message]
2019-11-26 10:07 ` [RFC net-next 12/18] virtio-net: store xdp_prog in device Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 13/18] virtio_net: use XDP attachment helpers Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 14/18] virtio_net: add XDP prog offload infrastructure Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 15/18] virtio_net: implement XDP prog offload functionality Prashant Bhole
2019-11-27 20:42 ` Michael S. Tsirkin
2019-11-28 2:53 ` Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 16/18] bpf: export function __bpf_map_get Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 17/18] virtio_net: implment XDP map offload functionality Prashant Bhole
2019-11-26 10:07 ` [RFC net-next 18/18] virtio_net: restrict bpf helper calls from offloaded program Prashant Bhole
2019-11-26 20:35 ` [RFC net-next 00/18] virtio_net XDP offload Jakub Kicinski
2019-11-27 2:59 ` Jason Wang
2019-11-27 19:49 ` Jakub Kicinski
2019-11-28 3:41 ` Jason Wang
2019-11-27 20:32 ` Michael S. Tsirkin
2019-11-27 23:40 ` Jakub Kicinski
2019-12-02 15:29 ` Michael S. Tsirkin
2019-11-28 3:32 ` Alexei Starovoitov
2019-11-28 4:18 ` Jason Wang
2019-12-01 16:54 ` David Ahern
2019-12-02 2:48 ` Jason Wang
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