diff mbox series

[v15,bpf-next,01/18] net: skbuff: add size metadata to skb_shared_info for xdp

Message ID 72546ad0b742461ce6102355dea69fcdcd0d14ad.1633697183.git.lorenzo@kernel.org (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series mvneta: introduce XDP multi-buffer support | expand

Checks

Context Check Description
netdev/cover_letter success Series has a cover letter
netdev/fixes_present success Fixes tag not required for -next series
netdev/patch_count fail Series longer than 15 patches (and no cover letter)
netdev/tree_selection success Clearly marked for bpf-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 16 maintainers not CCed: hawk@kernel.org andrii@kernel.org memxor@gmail.com songliubraving@fb.com ilias.apalodimas@linaro.org elver@google.com pabeni@redhat.com yhs@fb.com haokexin@gmail.com nogikh@google.com kafai@fb.com willemb@google.com alobakin@pm.me jonathan.lemon@gmail.com cong.wang@bytedance.com kpsingh@kernel.org
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 6101 this patch: 6101
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success No Fixes tag
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 7 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 6165 this patch: 6165
netdev/header_inline success No static functions without inline keyword in header files
bpf/vmtest-bpf-next-PR success PR summary
bpf/vmtest-bpf-next success VM_Test

Commit Message

Lorenzo Bianconi Oct. 8, 2021, 12:49 p.m. UTC 
Introduce xdp_frags_size field in skb_shared_info data structure
to store xdp_buff/xdp_frame frame paged size (xdp_frags_size 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.

Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 include/linux/skbuff.h | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 841e2f0f5240..86f68042c533 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -529,6 +529,7 @@  struct skb_shared_info {
 	 * Warning : all fields before dataref are cleared in __alloc_skb()
 	 */
 	atomic_t	dataref;
+	unsigned int	xdp_frags_size;
 
 	/* Intermediate layers must ensure that destructor_arg
 	 * remains valid until skb destructor */