From: Prashant Bhole <prashantbhole.linux@gmail.com>
To: "David S . Miller" <davem@davemloft.net>,
"Michael S . Tsirkin" <mst@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Jesper Dangaard Brouer <hawk@kernel.org>
Cc: Prashant Bhole <prashantbhole.linux@gmail.com>,
Jason Wang <jasowang@redhat.com>, David Ahern <dsahern@gmail.com>,
Jakub Kicinski <jakub.kicinski@netronome.com>,
John Fastabend <john.fastabend@gmail.com>,
Toshiaki Makita <toshiaki.makita1@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
Subject: [RFC net-next 13/14] tun: handle XDP_TX action of tx path XDP program
Date: Wed, 18 Dec 2019 17:10:49 +0900 [thread overview]
Message-ID: <20191218081050.10170-14-prashantbhole.linux@gmail.com> (raw)
In-Reply-To: <20191218081050.10170-1-prashantbhole.linux@gmail.com>
When the action code is XDP_TX, we need to inject the packet in
Rx path of tun. This patch injects such packets in Rx path using
tun_xdp_one.
Signed-off-by: Prashant Bhole <prashantbhole.linux@gmail.com>
---
drivers/net/tun.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 0701a7a80346..8e2fe0ad7955 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -2266,7 +2266,13 @@ static u32 tun_do_xdp_tx(struct tun_struct *tun, struct tun_file *tfile,
case XDP_PASS:
break;
case XDP_TX:
- /* fall through */
+ tpage.page = NULL;
+ tpage.count = 0;
+ tun_xdp_one(tun, tfile, &xdp, &flush, &tpage, false);
+ tun_put_page(&tpage);
+ if (flush)
+ xdp_do_flush_map();
+ break;
case XDP_REDIRECT:
/* fall through */
default:
--
2.21.0
next prev parent reply other threads:[~2019-12-18 8:13 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-18 8:10 [RFC net-next 00/14] XDP in tx path Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 01/14] net: add tx path XDP support Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 02/14] tools: sync kernel uapi/linux/if_link.h header Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 03/14] libbpf: API for tx path XDP support Prashant Bhole
2019-12-18 18:20 ` Alexei Starovoitov
2019-12-18 8:10 ` [RFC net-next 04/14] samples/bpf: xdp1, add XDP tx support Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 05/14] net: core: rename netif_receive_generic_xdp() to do_generic_xdp_core() Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 06/14] net: core: export do_xdp_generic_core() Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 07/14] tuntap: check tun_msg_ctl type at necessary places Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 08/14] vhost_net: user tap recvmsg api to access ptr ring Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 09/14] tuntap: remove usage of ptr ring in vhost_net Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 10/14] tun: set tx path XDP program Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 11/14] tun: run XDP program in tx path Prashant Bhole
2019-12-18 10:07 ` Jesper Dangaard Brouer
2019-12-18 11:48 ` Toke Høiland-Jørgensen
2019-12-18 16:33 ` David Ahern
2019-12-19 2:44 ` Jason Wang
2019-12-18 18:19 ` Alexei Starovoitov
2019-12-19 2:34 ` Prashant Bhole
2019-12-19 10:15 ` Toke Høiland-Jørgensen
2019-12-20 0:07 ` Prashant Bhole
2019-12-20 3:24 ` Jason Wang
2019-12-20 4:46 ` Prashant Bhole
2019-12-20 7:36 ` Jason Wang
2019-12-20 10:11 ` Toke Høiland-Jørgensen
2019-12-20 16:11 ` David Ahern
2019-12-20 22:17 ` Prashant Bhole
2019-12-23 6:05 ` Jason Wang
2019-12-23 8:09 ` Prashant Bhole
2019-12-23 8:34 ` Jason Wang
2019-12-23 11:06 ` Prashant Bhole
2019-12-18 16:29 ` David Ahern
2019-12-19 1:47 ` Prashant Bhole
2019-12-18 8:10 ` [RFC net-next 12/14] tun: add a way to inject tx path packet into Rx path Prashant Bhole
2019-12-18 8:10 ` Prashant Bhole [this message]
2019-12-18 8:10 ` [RFC net-next 14/14] tun: run xdp prog when tun is read from file interface Prashant Bhole
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