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From: Lorenzo Bianconi <lorenzo@kernel.org>
To: bpf@vger.kernel.org, netdev@vger.kernel.org
Cc: lorenzo.bianconi@redhat.com, davem@davemloft.net,
kuba@kernel.org, ast@kernel.org, daniel@iogearbox.net,
shayagr@amazon.com, john.fastabend@gmail.com, dsahern@kernel.org,
brouer@redhat.com, echaudro@redhat.com, jasowang@redhat.com,
alexander.duyck@gmail.com, saeed@kernel.org,
maciej.fijalkowski@intel.com, magnus.karlsson@intel.com,
tirthendu.sarkar@intel.com, toke@redhat.com
Subject: [PATCH v10 bpf-next 01/18] net: skbuff: add size metadata to skb_shared_info for xdp
Date: Wed, 28 Jul 2021 11:38:06 +0200 [thread overview]
Message-ID: <97cd38b4b4e6cd531e7444df345317f4bf39ef85.1627463617.git.lorenzo@kernel.org> (raw)
In-Reply-To: <cover.1627463617.git.lorenzo@kernel.org>
Introduce xdp_frags_tsize field in skb_shared_info data structure
to store xdp_buff/xdp_frame truesize (xdp_frags_tsize will be used
in xdp multi-buff support). In order to not increase skb_shared_info
size we will use a hole due to skb_shared_info alignment.
Introduce xdp_frags_size field in skb_shared_info data structure
reusing gso_type field in order to store xdp_buff/xdp_frame paged size.
xdp_frags_size will be used in xdp multi-buff support.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
include/linux/skbuff.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f19190820e63..4ece1775179c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -522,13 +522,17 @@ struct skb_shared_info {
unsigned short gso_segs;
struct sk_buff *frag_list;
struct skb_shared_hwtstamps hwtstamps;
- unsigned int gso_type;
+ union {
+ unsigned int gso_type;
+ unsigned int xdp_frags_size;
+ };
u32 tskey;
/*
* Warning : all fields before dataref are cleared in __alloc_skb()
*/
atomic_t dataref;
+ unsigned int xdp_frags_tsize;
/* Intermediate layers must ensure that destructor_arg
* remains valid until skb destructor */
--
2.31.1
next prev parent reply other threads:[~2021-07-28 9:38 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 9:33 [PATCH v10 bpf-next 00/18] mvneta: introduce XDP multi-buffer support Lorenzo Bianconi
2021-07-28 9:38 ` Lorenzo Bianconi
2021-07-28 9:38 ` Lorenzo Bianconi [this message]
2021-07-28 9:38 ` [PATCH v10 bpf-next 02/18] xdp: introduce flags field in xdp_buff/xdp_frame Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 03/18] net: mvneta: update mb bit before passing the xdp buffer to eBPF layer Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 04/18] net: mvneta: simplify mvneta_swbm_add_rx_fragment management Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 05/18] net: xdp: add xdp_update_skb_shared_info utility routine Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 06/18] net: marvell: rely on " Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 07/18] xdp: add multi-buff support to xdp_return_{buff/frame} Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 08/18] net: mvneta: add multi buffer support to XDP_TX Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 09/18] net: mvneta: enable jumbo frames for XDP Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 10/18] bpf: add multi-buff support to the bpf_xdp_adjust_tail() API Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 11/18] bpf: introduce bpf_xdp_get_buff_len helper Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 12/18] bpf: add multi-buffer support to xdp copy helpers Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 13/18] bpf: move user_size out of bpf_test_init Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 14/18] bpf: introduce multibuff support to bpf_prog_test_run_xdp() Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 15/18] bpf: test_run: add xdp_shared_info pointer in bpf_test_finish signature Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 16/18] bpf: update xdp_adjust_tail selftest to include multi-buffer Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 17/18] net: xdp: introduce bpf_xdp_adjust_data helper Lorenzo Bianconi
2021-07-28 9:38 ` [PATCH v10 bpf-next 18/18] bpf: add bpf_xdp_adjust_data selftest Lorenzo Bianconi
2021-07-28 9:47 ` [PATCH v10 bpf-next 00/18] mvneta: introduce XDP multi-buffer support Lorenzo Bianconi
2021-07-30 23:00 ` Andrii Nakryiko
2021-08-02 14:42 ` Lorenzo Bianconi
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