From: Stanislav Fomichev <sdf@google.com>
To: bpf@vger.kernel.org
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
martin.lau@linux.dev, song@kernel.org, yhs@fb.com,
john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com,
haoluo@google.com, jolsa@kernel.org,
Jakub Kicinski <kuba@kernel.org>,
Willem de Bruijn <willemb@google.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Anatoly Burakov <anatoly.burakov@intel.com>,
Alexander Lobakin <alexandr.lobakin@intel.com>,
Magnus Karlsson <magnus.karlsson@gmail.com>,
Maryam Tahhan <mtahhan@redhat.com>,
xdp-hints@xdp-project.net, netdev@vger.kernel.org
Subject: [PATCH bpf-next v5 09/17] veth: Introduce veth_xdp_buff wrapper for xdp_buff
Date: Tue, 20 Dec 2022 14:20:35 -0800 [thread overview]
Message-ID: <20221220222043.3348718-10-sdf@google.com> (raw)
In-Reply-To: <20221220222043.3348718-1-sdf@google.com>
No functional changes. Boilerplate to allow stuffing more data after xdp_buff.
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Anatoly Burakov <anatoly.burakov@intel.com>
Cc: Alexander Lobakin <alexandr.lobakin@intel.com>
Cc: Magnus Karlsson <magnus.karlsson@gmail.com>
Cc: Maryam Tahhan <mtahhan@redhat.com>
Cc: xdp-hints@xdp-project.net
Cc: netdev@vger.kernel.org
Signed-off-by: Stanislav Fomichev <sdf@google.com>
---
drivers/net/veth.c | 56 +++++++++++++++++++++++++---------------------
1 file changed, 31 insertions(+), 25 deletions(-)
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index ac7c0653695f..04ffd8cb2945 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -116,6 +116,10 @@ static struct {
{ "peer_ifindex" },
};
+struct veth_xdp_buff {
+ struct xdp_buff xdp;
+};
+
static int veth_get_link_ksettings(struct net_device *dev,
struct ethtool_link_ksettings *cmd)
{
@@ -592,23 +596,24 @@ static struct xdp_frame *veth_xdp_rcv_one(struct veth_rq *rq,
rcu_read_lock();
xdp_prog = rcu_dereference(rq->xdp_prog);
if (likely(xdp_prog)) {
- struct xdp_buff xdp;
+ struct veth_xdp_buff vxbuf;
+ struct xdp_buff *xdp = &vxbuf.xdp;
u32 act;
- xdp_convert_frame_to_buff(frame, &xdp);
- xdp.rxq = &rq->xdp_rxq;
+ xdp_convert_frame_to_buff(frame, xdp);
+ xdp->rxq = &rq->xdp_rxq;
- act = bpf_prog_run_xdp(xdp_prog, &xdp);
+ act = bpf_prog_run_xdp(xdp_prog, xdp);
switch (act) {
case XDP_PASS:
- if (xdp_update_frame_from_buff(&xdp, frame))
+ if (xdp_update_frame_from_buff(xdp, frame))
goto err_xdp;
break;
case XDP_TX:
orig_frame = *frame;
- xdp.rxq->mem = frame->mem;
- if (unlikely(veth_xdp_tx(rq, &xdp, bq) < 0)) {
+ xdp->rxq->mem = frame->mem;
+ if (unlikely(veth_xdp_tx(rq, xdp, bq) < 0)) {
trace_xdp_exception(rq->dev, xdp_prog, act);
frame = &orig_frame;
stats->rx_drops++;
@@ -619,8 +624,8 @@ static struct xdp_frame *veth_xdp_rcv_one(struct veth_rq *rq,
goto xdp_xmit;
case XDP_REDIRECT:
orig_frame = *frame;
- xdp.rxq->mem = frame->mem;
- if (xdp_do_redirect(rq->dev, &xdp, xdp_prog)) {
+ xdp->rxq->mem = frame->mem;
+ if (xdp_do_redirect(rq->dev, xdp, xdp_prog)) {
frame = &orig_frame;
stats->rx_drops++;
goto err_xdp;
@@ -801,7 +806,8 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
{
void *orig_data, *orig_data_end;
struct bpf_prog *xdp_prog;
- struct xdp_buff xdp;
+ struct veth_xdp_buff vxbuf;
+ struct xdp_buff *xdp = &vxbuf.xdp;
u32 act, metalen;
int off;
@@ -815,22 +821,22 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
}
__skb_push(skb, skb->data - skb_mac_header(skb));
- if (veth_convert_skb_to_xdp_buff(rq, &xdp, &skb))
+ if (veth_convert_skb_to_xdp_buff(rq, xdp, &skb))
goto drop;
- orig_data = xdp.data;
- orig_data_end = xdp.data_end;
+ orig_data = xdp->data;
+ orig_data_end = xdp->data_end;
- act = bpf_prog_run_xdp(xdp_prog, &xdp);
+ act = bpf_prog_run_xdp(xdp_prog, xdp);
switch (act) {
case XDP_PASS:
break;
case XDP_TX:
- veth_xdp_get(&xdp);
+ veth_xdp_get(xdp);
consume_skb(skb);
- xdp.rxq->mem = rq->xdp_mem;
- if (unlikely(veth_xdp_tx(rq, &xdp, bq) < 0)) {
+ xdp->rxq->mem = rq->xdp_mem;
+ if (unlikely(veth_xdp_tx(rq, xdp, bq) < 0)) {
trace_xdp_exception(rq->dev, xdp_prog, act);
stats->rx_drops++;
goto err_xdp;
@@ -839,10 +845,10 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
rcu_read_unlock();
goto xdp_xmit;
case XDP_REDIRECT:
- veth_xdp_get(&xdp);
+ veth_xdp_get(xdp);
consume_skb(skb);
- xdp.rxq->mem = rq->xdp_mem;
- if (xdp_do_redirect(rq->dev, &xdp, xdp_prog)) {
+ xdp->rxq->mem = rq->xdp_mem;
+ if (xdp_do_redirect(rq->dev, xdp, xdp_prog)) {
stats->rx_drops++;
goto err_xdp;
}
@@ -862,7 +868,7 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
rcu_read_unlock();
/* check if bpf_xdp_adjust_head was used */
- off = orig_data - xdp.data;
+ off = orig_data - xdp->data;
if (off > 0)
__skb_push(skb, off);
else if (off < 0)
@@ -871,21 +877,21 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
skb_reset_mac_header(skb);
/* check if bpf_xdp_adjust_tail was used */
- off = xdp.data_end - orig_data_end;
+ off = xdp->data_end - orig_data_end;
if (off != 0)
__skb_put(skb, off); /* positive on grow, negative on shrink */
/* XDP frag metadata (e.g. nr_frags) are updated in eBPF helpers
* (e.g. bpf_xdp_adjust_tail), we need to update data_len here.
*/
- if (xdp_buff_has_frags(&xdp))
+ if (xdp_buff_has_frags(xdp))
skb->data_len = skb_shinfo(skb)->xdp_frags_size;
else
skb->data_len = 0;
skb->protocol = eth_type_trans(skb, rq->dev);
- metalen = xdp.data - xdp.data_meta;
+ metalen = xdp->data - xdp->data_meta;
if (metalen)
skb_metadata_set(skb, metalen);
out:
@@ -898,7 +904,7 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq,
return NULL;
err_xdp:
rcu_read_unlock();
- xdp_return_buff(&xdp);
+ xdp_return_buff(xdp);
xdp_xmit:
return NULL;
}
--
2.39.0.314.g84b9a713c41-goog
next prev parent reply other threads:[~2022-12-20 22:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-20 22:20 [PATCH bpf-next v5 00/17] xdp: hints via kfuncs Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 01/17] bpf: Document XDP RX metadata Stanislav Fomichev
2022-12-28 17:25 ` David Vernet
2023-01-03 22:23 ` Stanislav Fomichev
2023-01-04 16:02 ` David Vernet
2022-12-20 22:20 ` [PATCH bpf-next v5 02/17] bpf: Rename bpf_{prog,map}_is_dev_bound to is_offloaded Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 03/17] bpf: Move offload initialization into late_initcall Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 04/17] bpf: Reshuffle some parts of bpf/offload.c Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 05/17] bpf: Introduce device-bound XDP programs Stanislav Fomichev
2022-12-23 0:19 ` Martin KaFai Lau
2022-12-23 4:06 ` Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 06/17] selftests/bpf: Update expected test_offload.py messages Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 07/17] bpf: XDP metadata RX kfuncs Stanislav Fomichev
[not found] ` <202212211311.e2ZWQLue-lkp@intel.com>
2022-12-21 17:49 ` Stanislav Fomichev
2022-12-23 0:31 ` Martin KaFai Lau
2022-12-23 4:06 ` Stanislav Fomichev
2022-12-27 20:33 ` David Vernet
2023-01-03 22:23 ` Stanislav Fomichev
2023-01-03 22:35 ` David Vernet
2022-12-20 22:20 ` [PATCH bpf-next v5 08/17] bpf: Support consuming XDP HW metadata from fext programs Stanislav Fomichev
2022-12-23 0:37 ` Martin KaFai Lau
2022-12-23 4:06 ` Stanislav Fomichev
2023-01-04 1:51 ` Martin KaFai Lau
2023-01-04 3:59 ` Stanislav Fomichev
2022-12-20 22:20 ` Stanislav Fomichev [this message]
2022-12-20 22:20 ` [PATCH bpf-next v5 10/17] veth: Support RX XDP metadata Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 11/17] selftests/bpf: Verify xdp_metadata xdp->af_xdp path Stanislav Fomichev
2022-12-23 0:40 ` Martin KaFai Lau
2022-12-23 4:06 ` Stanislav Fomichev
2023-01-04 2:05 ` Martin KaFai Lau
2022-12-20 22:20 ` [PATCH bpf-next v5 12/17] net/mlx4_en: Introduce wrapper for xdp_buff Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 13/17] net/mlx4_en: Support RX XDP metadata Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 14/17] xsk: Add cb area to struct xdp_buff_xsk Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 15/17] net/mlx5e: Introduce wrapper for xdp_buff Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 16/17] net/mlx5e: Support RX XDP metadata Stanislav Fomichev
2022-12-20 22:20 ` [PATCH bpf-next v5 17/17] selftests/bpf: Simple program to dump XDP RX metadata Stanislav Fomichev
2022-12-23 0:53 ` Martin KaFai Lau
2022-12-23 4:07 ` Stanislav Fomichev
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221220222043.3348718-10-sdf@google.com \
--to=sdf@google.com \
--cc=alexandr.lobakin@intel.com \
--cc=anatoly.burakov@intel.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=brouer@redhat.com \
--cc=daniel@iogearbox.net \
--cc=haoluo@google.com \
--cc=john.fastabend@gmail.com \
--cc=jolsa@kernel.org \
--cc=kpsingh@kernel.org \
--cc=kuba@kernel.org \
--cc=magnus.karlsson@gmail.com \
--cc=martin.lau@linux.dev \
--cc=mtahhan@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=song@kernel.org \
--cc=willemb@google.com \
--cc=xdp-hints@xdp-project.net \
--cc=yhs@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).