diff options
| author |   Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-09-07 10:18:46 +0200 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-09-25 13:13:15 -0700 |
| commit | f5bd91388e26557f64ca999e0006038c7a919308 (patch) | |
| tree | 28d868b5c3ed674e3bc2e18cd179657d4301bd9d /net/xdp/xsk_queue.h | |
| parent | i40e: clean zero-copy XDP Tx ring on shutdown/reset (diff) | |
| download | linux-dev-f5bd91388e26557f64ca999e0006038c7a919308.tar.xz linux-dev-f5bd91388e26557f64ca999e0006038c7a919308.zip | |
net: xsk: add a simple buffer reuse queue
XSK UMEM is strongly single producer single consumer so reuse of
frames is challenging. Add a simple "stash" of FILL packets to
reuse for drivers to optionally make use of. This is useful
when driver has to free (ndo_stop) or resize a ring with an active
AF_XDP ZC socket.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'net/xdp/xsk_queue.h')
| -rw-r--r-- | net/xdp/xsk_queue.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h index 82252cccb4e0..bcb5cbb40419 100644 --- a/net/xdp/xsk_queue.h +++ b/net/xdp/xsk_queue.h @@ -258,4 +258,7 @@ void xskq_set_umem(struct xsk_queue *q, u64 size, u64 chunk_mask); struct xsk_queue *xskq_create(u32 nentries, bool umem_queue); void xskq_destroy(struct xsk_queue *q_ops); +/* Executed by the core when the entire UMEM gets freed */ +void xsk_reuseq_destroy(struct xdp_umem *umem); + #endif /* _LINUX_XSK_QUEUE_H */ |