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Message-Id: <20230807122332.85628-1-huangjie.albert@bytedance.com> Date: Mon, 7 Aug 2023 20:23:32 +0800 From: Albert Huang <huangjie.albert@...edance.com> To: Cc: Albert Huang <huangjie.albert@...edance.com>, Björn Töpel <bjorn@...nel.org>, Magnus Karlsson <magnus.karlsson@...el.com>, Maciej Fijalkowski <maciej.fijalkowski@...el.com>, Jonathan Lemon <jonathan.lemon@...il.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Jesper Dangaard Brouer <hawk@...nel.org>, John Fastabend <john.fastabend@...il.com>, netdev@...r.kernel.org (open list:XDP SOCKETS (AF_XDP)), bpf@...r.kernel.org (open list:XDP SOCKETS (AF_XDP)), linux-kernel@...r.kernel.org (open list) Subject: [RFC v2 Optimizing veth xsk performance 4/9] xsk: add xsk_tx_completed_addr function Return desc to the cq by using the descriptor address. Signed-off-by: Albert Huang <huangjie.albert@...edance.com> --- include/net/xdp_sock_drv.h | 1 + net/xdp/xsk.c | 6 ++++++ net/xdp/xsk_queue.h | 10 ++++++++++ 3 files changed, 17 insertions(+) diff --git a/include/net/xdp_sock_drv.h b/include/net/xdp_sock_drv.h index 1f6fc8c7a84c..5220454bff5c 100644 --- a/include/net/xdp_sock_drv.h +++ b/include/net/xdp_sock_drv.h @@ -15,6 +15,7 @@ #ifdef CONFIG_XDP_SOCKETS void xsk_tx_completed(struct xsk_buff_pool *pool, u32 nb_entries); +void xsk_tx_completed_addr(struct xsk_buff_pool *pool, u64 addr); bool xsk_tx_peek_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc); u32 xsk_tx_peek_release_desc_batch(struct xsk_buff_pool *pool, u32 max); void xsk_tx_release(struct xsk_buff_pool *pool); diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 4f1e0599146e..b2b8aa7b0bcf 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -396,6 +396,12 @@ void xsk_tx_completed(struct xsk_buff_pool *pool, u32 nb_entries) } EXPORT_SYMBOL(xsk_tx_completed); +void xsk_tx_completed_addr(struct xsk_buff_pool *pool, u64 addr) +{ + xskq_prod_submit_addr(pool->cq, addr); +} +EXPORT_SYMBOL(xsk_tx_completed_addr); + void xsk_tx_release(struct xsk_buff_pool *pool) { struct xdp_sock *xs; diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h index 13354a1e4280..3a5e26a81dc2 100644 --- a/net/xdp/xsk_queue.h +++ b/net/xdp/xsk_queue.h @@ -428,6 +428,16 @@ static inline void __xskq_prod_submit(struct xsk_queue *q, u32 idx) smp_store_release(&q->ring->producer, idx); /* B, matches C */ } +static inline void xskq_prod_submit_addr(struct xsk_queue *q, u64 addr) +{ + struct xdp_umem_ring *ring = (struct xdp_umem_ring *)q->ring; + u32 idx = q->ring->producer; + + ring->desc[idx++ & q->ring_mask] = addr; + + __xskq_prod_submit(q, idx); +} + static inline void xskq_prod_submit(struct xsk_queue *q) { __xskq_prod_submit(q, q->cached_prod); -- 2.20.1
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