From b4e352ff1169ebce930c734630f9587b1677d163 Mon Sep 17 00:00:00 2001 From: Maciej Fijalkowski Date: Tue, 5 Dec 2023 22:08:36 +0100 Subject: 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 Signed-off-by: Larysa Zaremba Acked-by: Magnus Karlsson Link: https://lore.kernel.org/r/20231205210847.28460-8-larysa.zaremba@intel.com Signed-off-by: Alexei Starovoitov --- net/xdp/xsk_buff_pool.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'net/xdp') 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; -- cgit v1.2.3