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,
andrii.nakryiko@gmail.com
Subject: [PATCH v23 bpf-next 06/23] net: marvell: rely on xdp_update_skb_shared_info utility routine
Date: Fri, 21 Jan 2022 11:09:49 +0100 [thread overview]
Message-ID: <e0dad97f5d02b13f189f99f1e5bc8e61bef73412.1642758637.git.lorenzo@kernel.org> (raw)
In-Reply-To: <cover.1642758637.git.lorenzo@kernel.org>
Rely on xdp_update_skb_shared_info routine in order to avoid
resetting frags array in skb_shared_info structure building
the skb in mvneta_swbm_build_skb(). Frags array is expected to
be initialized by the receiving driver building the xdp_buff
and here we just need to update memory metadata.
Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/ethernet/marvell/mvneta.c | 23 ++++++++++-------------
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index bc70292dda43..f1fd93e89c73 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2332,8 +2332,12 @@ mvneta_swbm_add_rx_fragment(struct mvneta_port *pp,
skb_frag_size_set(frag, data_len);
__skb_frag_set_page(frag, page);
- if (!xdp_buff_has_frags(xdp))
+ if (!xdp_buff_has_frags(xdp)) {
+ sinfo->xdp_frags_size = *size;
xdp_buff_set_frags_flag(xdp);
+ }
+ if (page_is_pfmemalloc(page))
+ xdp_buff_set_frag_pfmemalloc(xdp);
} else {
page_pool_put_full_page(rxq->page_pool, page, true);
}
@@ -2347,7 +2351,6 @@ mvneta_swbm_build_skb(struct mvneta_port *pp, struct page_pool *pool,
struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp);
struct sk_buff *skb;
u8 num_frags;
- int i;
if (unlikely(xdp_buff_has_frags(xdp)))
num_frags = sinfo->nr_frags;
@@ -2362,18 +2365,12 @@ mvneta_swbm_build_skb(struct mvneta_port *pp, struct page_pool *pool,
skb_put(skb, xdp->data_end - xdp->data);
skb->ip_summed = mvneta_rx_csum(pp, desc_status);
- if (likely(!xdp_buff_has_frags(xdp)))
- goto out;
-
- for (i = 0; i < num_frags; i++) {
- skb_frag_t *frag = &sinfo->frags[i];
-
- skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
- skb_frag_page(frag), skb_frag_off(frag),
- skb_frag_size(frag), PAGE_SIZE);
- }
+ if (unlikely(xdp_buff_has_frags(xdp)))
+ xdp_update_skb_shared_info(skb, num_frags,
+ sinfo->xdp_frags_size,
+ num_frags * xdp->frame_sz,
+ xdp_buff_is_frag_pfmemalloc(xdp));
-out:
return skb;
}
--
2.34.1
next prev parent reply other threads:[~2022-01-21 10:11 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-21 10:09 [PATCH v23 bpf-next 00/23] mvneta: introduce XDP multi-buffer support Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 01/23] net: skbuff: add size metadata to skb_shared_info for xdp Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 02/23] xdp: introduce flags field in xdp_buff/xdp_frame Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 03/23] net: mvneta: update frags bit before passing the xdp buffer to eBPF layer Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 04/23] net: mvneta: simplify mvneta_swbm_add_rx_fragment management Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 05/23] net: xdp: add xdp_update_skb_shared_info utility routine Lorenzo Bianconi
2022-01-21 10:09 ` Lorenzo Bianconi [this message]
2022-01-21 10:09 ` [PATCH v23 bpf-next 07/23] xdp: add frags support to xdp_return_{buff/frame} Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 08/23] net: mvneta: add frags support to XDP_TX Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 09/23] bpf: introduce BPF_F_XDP_HAS_FRAGS flag in prog_flags loading the ebpf program Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 10/23] net: mvneta: enable jumbo frames if the loaded XDP program support frags Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 11/23] bpf: introduce bpf_xdp_get_buff_len helper Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 12/23] bpf: add frags support to the bpf_xdp_adjust_tail() API Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 13/23] bpf: add frags support to xdp copy helpers Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 14/23] bpf: move user_size out of bpf_test_init Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 15/23] bpf: introduce frags support to bpf_prog_test_run_xdp() Lorenzo Bianconi
2022-01-21 10:09 ` [PATCH v23 bpf-next 16/23] bpf: test_run: add xdp_shared_info pointer in bpf_test_finish signature Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 17/23] bpf: selftests: update xdp_adjust_tail selftest to include xdp frags Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 18/23] libbpf: Add SEC name for xdp frags programs Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 19/23] bpf: generalise tail call map compatibility check Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 20/23] net: xdp: introduce bpf_xdp_pointer utility routine Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 21/23] bpf: selftests: introduce bpf_xdp_{load,store}_bytes selftest Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 22/23] bpf: selftests: add CPUMAP/DEVMAP selftests for xdp frags Lorenzo Bianconi
2022-01-21 10:10 ` [PATCH v23 bpf-next 23/23] xdp: disable XDP_REDIRECT " Lorenzo Bianconi
2022-01-21 22:21 ` [PATCH v23 bpf-next 00/23] mvneta: introduce XDP multi-buffer support Alexei Starovoitov
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