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| author | Maciej Fijalkowski <maciej.fijalkowski@intel.com> | 2023-12-05 22:08:36 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-12-13 16:16:40 -0800 |
| commit | b4e352ff1169ebce930c734630f9587b1677d163 (patch) | |
| tree | 6aeca0326743eee91683817f52d708ac6478f1a7 /net | |
| parent | 0e6a7b09597011985d7aad3b747c43e9b2a43555 (diff) | |
| download | linux-b4e352ff1169ebce930c734630f9587b1677d163.tar.gz linux-b4e352ff1169ebce930c734630f9587b1677d163.tar.bz2 linux-b4e352ff1169ebce930c734630f9587b1677d163.zip | |
xsk: add functions to fill control buffer
Commit 94ecc5ca4dbf ("xsk: Add cb area to struct xdp_buff_xsk") has added
a buffer for custom data to xdp_buff_xsk. Particularly, this memory is used
for data, consumed by XDP hints kfuncs. It does not always change on
a per-packet basis and some parts can be set for example, at the same time
as RX queue info.
Add functions to fill all cbs in xsk_buff_pool with the same metadata.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@intel.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/r/20231205210847.28460-8-larysa.zaremba@intel.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/xdp/xsk_buff_pool.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/xdp/xsk_buff_pool.c b/net/xdp/xsk_buff_pool.c index 4f6f538a5462..28711cc44ced 100644 --- a/net/xdp/xsk_buff_pool.c +++ b/net/xdp/xsk_buff_pool.c @@ -125,6 +125,18 @@ void xp_set_rxq_info(struct xsk_buff_pool *pool, struct xdp_rxq_info *rxq) } EXPORT_SYMBOL(xp_set_rxq_info); +void xp_fill_cb(struct xsk_buff_pool *pool, struct xsk_cb_desc *desc) +{ + u32 i; + + for (i = 0; i < pool->heads_cnt; i++) { + struct xdp_buff_xsk *xskb = &pool->heads[i]; + + memcpy(xskb->cb + desc->off, desc->src, desc->bytes); + } +} +EXPORT_SYMBOL(xp_fill_cb); + static void xp_disable_drv_zc(struct xsk_buff_pool *pool) { struct netdev_bpf bpf; |