diff options
| author | Magnus Karlsson <magnus.karlsson@intel.com> | 2019-08-14 09:27:20 +0200 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-08-17 23:07:32 +0200 |
| commit | a4500432c2587cb2ae7554537886a4516ff2e7aa (patch) | |
| tree | 0d47b6abb6500eec416b23f908a974e101aff3b2 /tools/lib/bpf | |
| parent | 5c129241e2de79f09cb4e50bbca09e1c14ad787d (diff) | |
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')
| -rw-r--r-- | tools/lib/bpf/xsk.c | 4 | ||||
| -rw-r--r-- | tools/lib/bpf/xsk.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c index 680e63066cf3..17e8d79c11a8 100644 --- a/tools/lib/bpf/xsk.c +++ b/tools/lib/bpf/xsk.c @@ -224,6 +224,7 @@ int xsk_umem__create(struct xsk_umem **umem_ptr, void *umem_area, __u64 size, fill->size = umem->config.fill_size; fill->producer = map + off.fr.producer; fill->consumer = map + off.fr.consumer; + fill->flags = map + off.fr.flags; fill->ring = map + off.fr.desc; fill->cached_cons = umem->config.fill_size; @@ -241,6 +242,7 @@ int xsk_umem__create(struct xsk_umem **umem_ptr, void *umem_area, __u64 size, comp->size = umem->config.comp_size; comp->producer = map + off.cr.producer; comp->consumer = map + off.cr.consumer; + comp->flags = map + off.cr.flags; comp->ring = map + off.cr.desc; *umem_ptr = umem; @@ -564,6 +566,7 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname, rx->size = xsk->config.rx_size; rx->producer = rx_map + off.rx.producer; rx->consumer = rx_map + off.rx.consumer; + rx->flags = rx_map + off.rx.flags; rx->ring = rx_map + off.rx.desc; } xsk->rx = rx; @@ -583,6 +586,7 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname, tx->size = xsk->config.tx_size; tx->producer = tx_map + off.tx.producer; tx->consumer = tx_map + off.tx.consumer; + tx->flags = tx_map + off.tx.flags; tx->ring = tx_map + off.tx.desc; tx->cached_cons = xsk->config.tx_size; } 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; |