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net: introduce and use skb_frag_fill_page_desc()

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Most users use __skb_frag_set_page()/skb_frag_off_set()/
skb_frag_size_set() to fill the page desc for a skb frag.

Introduce skb_frag_fill_page_desc() to do that.

net/bpf/test_run.c does not call skb_frag_off_set() to
set the offset, "copy_from_user(page_address(page), ...)"
and 'shinfo' being part of the 'data' kzalloced in
bpf_test_init() suggest that it is assuming offset to be
initialized as zero, so call skb_frag_fill_page_desc()
with offset being zero for this case.

Also, skb_frag_set_page() is not used anymore, so remove
it.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yunsheng Lin
2023-05-11 09:12:12 +08:00
committed by David S. Miller
parent 305c041899
commit b51f4113eb
19 changed files with 64 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
net/bpf/test_run.c
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@@ -1415,11 +1415,10 @@ int bpf_prog_test_run_xdp(struct bpf_prog *prog, const union bpf_attr *kattr,
}
frag = &sinfo->frags[sinfo->nr_frags++];
__skb_frag_set_page(frag, page);
data_len = min_t(u32, kattr->test.data_size_in - size,
PAGE_SIZE);
skb_frag_size_set(frag, data_len);
skb_frag_fill_page_desc(frag, page, 0, data_len);
if (copy_from_user(page_address(page), data_in + size,
data_len)) {