diff options
| author | Magnus Karlsson <magnus.karlsson@intel.com> | 2019-08-14 10:27:20 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-08-18 00:07:32 +0300 |
| commit | a4500432c2587cb2ae7554537886a4516ff2e7aa (patch) | |
| tree | 0d47b6abb6500eec416b23f908a974e101aff3b2 /tools/lib/bpf/xsk.h | |
| parent | 5c129241e2de79f09cb4e50bbca09e1c14ad787d (diff) | |
| download | linux-a4500432c2587cb2ae7554537886a4516ff2e7aa.tar.xz | |
libbpf: add support for need_wakeup flag in AF_XDP part
This commit adds support for the new need_wakeup flag in AF_XDP. The
xsk_socket__create function is updated to handle this and a new
function is introduced called xsk_ring_prod__needs_wakeup(). This
function can be used by the application to check if Rx and/or Tx
processing needs to be explicitly woken up.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/lib/bpf/xsk.h')
| -rw-r--r-- | tools/lib/bpf/xsk.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/lib/bpf/xsk.h b/tools/lib/bpf/xsk.h index 833a6e60d065..aa1d6122b7db 100644 --- a/tools/lib/bpf/xsk.h +++ b/tools/lib/bpf/xsk.h @@ -32,6 +32,7 @@ struct name { \ __u32 *producer; \ __u32 *consumer; \ void *ring; \ + __u32 *flags; \ } DEFINE_XSK_RING(xsk_ring_prod); @@ -76,6 +77,11 @@ xsk_ring_cons__rx_desc(const struct xsk_ring_cons *rx, __u32 idx) return &descs[idx & rx->mask]; } +static inline int xsk_ring_prod__needs_wakeup(const struct xsk_ring_prod *r) +{ + return *r->flags & XDP_RING_NEED_WAKEUP; +} + static inline __u32 xsk_prod_nb_free(struct xsk_ring_prod *r, __u32 nb) { __u32 free_entries = r->cached_cons - r->cached_prod; |