diff options
| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2022-01-21 13:09:50 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-01-22 01:14:01 +0300 |
| commit | 7c48cb0176c6d6d3b55029f7ff4ffa05faee6446 (patch) | |
| tree | b5ea5c4a4693318b19d4350491c37d69f523bbd7 /include/net/xdp.h | |
| parent | ed7a58cb40bd1dda5bf3a7f4d18d2652423fd14b (diff) | |
| download | linux-7c48cb0176c6d6d3b55029f7ff4ffa05faee6446.tar.xz | |
xdp: add frags support to xdp_return_{buff/frame}
Take into account if the received xdp_buff/xdp_frame is non-linear
recycling/returning the frame memory to the allocator or into
xdp_frame_bulk.
Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/a961069febc868508ce1bdf5e53a343eb4e57cb2.1642758637.git.lorenzo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/net/xdp.h')
| -rw-r--r-- | include/net/xdp.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h index 1f8641ec658e..8463dea8b4db 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -306,10 +306,24 @@ void __xdp_release_frame(void *data, struct xdp_mem_info *mem); static inline void xdp_release_frame(struct xdp_frame *xdpf) { struct xdp_mem_info *mem = &xdpf->mem; + struct skb_shared_info *sinfo; + int i; /* Curr only page_pool needs this */ - if (mem->type == MEM_TYPE_PAGE_POOL) - __xdp_release_frame(xdpf->data, mem); + if (mem->type != MEM_TYPE_PAGE_POOL) + return; + + if (likely(!xdp_frame_has_frags(xdpf))) + goto out; + + sinfo = xdp_get_shared_info_from_frame(xdpf); + for (i = 0; i < sinfo->nr_frags; i++) { + struct page *page = skb_frag_page(&sinfo->frags[i]); + + __xdp_release_frame(page_address(page), mem); + } +out: + __xdp_release_frame(xdpf->data, mem); } int xdp_rxq_info_reg(struct xdp_rxq_info *xdp_rxq, |