From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?unknown-8bit?q?Bj=C3=B6rn_T=C3=B6pel?= Date: Thu, 5 Nov 2020 11:28:08 +0100 Subject: [Intel-wired-lan] [RFC PATCH bpf-next v2 5/9] xsk: add busy-poll support for {recv, send}msg() In-Reply-To: <20201105102812.152836-1-bjorn.topel@gmail.com> References: <20201105102812.152836-1-bjorn.topel@gmail.com> Message-ID: <20201105102812.152836-6-bjorn.topel@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: intel-wired-lan@osuosl.org List-ID: From: Bj?rn T?pel Wire-up XDP socket busy-poll support for recvmsg() and sendmsg(). Signed-off-by: Bj?rn T?pel --- net/xdp/xsk.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c index 2e5b9f27c7a3..da649b4f377c 100644 --- a/net/xdp/xsk.c +++ b/net/xdp/xsk.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include "xsk_queue.h" @@ -472,6 +473,9 @@ static int xsk_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len) if (unlikely(need_wait)) return -EOPNOTSUPP; + if (sk_can_busy_loop(sk)) + sk_busy_loop(sk, 1); /* only support non-blocking sockets */ + pool = xs->pool; if (pool->cached_need_wakeup & XDP_WAKEUP_TX) return __xsk_sendmsg(sk); @@ -493,6 +497,9 @@ static int xsk_recvmsg(struct socket *sock, struct msghdr *m, size_t len, int fl if (unlikely(need_wait)) return -EOPNOTSUPP; + if (sk_can_busy_loop(sk)) + sk_busy_loop(sk, 1); /* only support non-blocking sockets */ + if (xs->pool->cached_need_wakeup & XDP_WAKEUP_RX && xs->zc) return xsk_wakeup(xs, XDP_WAKEUP_RX); return 0; -- 2.27.0