From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: passt.top; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: passt.top; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=VWLCGQqH; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by passt.top (Postfix) with ESMTP id 36C965A004C for ; Wed, 09 Oct 2024 11:07:29 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1728464848; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=V0Tykg1GDtfOeVuDfeIpRtKHEt3O9Cq/X5M+1dWQVlE=; b=VWLCGQqHADqaAVIjfExUe2OyaBE2soQdOcrfncmdtXPvtHJZ5SHgsJ52uPNf6rlufILL0G TZa+ni8lREJ33ft4LSO1LyHdj3ty5HH867TldZMCA27kqZTFspU0RpiFGjTMfdo0E8CCFA olCV18aEOs+D0Mi4POCeIogfnGUrAdo= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-384-eGlaowEUOTik1lmnWDJVCg-1; Wed, 09 Oct 2024 05:07:26 -0400 X-MC-Unique: eGlaowEUOTik1lmnWDJVCg-1 Received: from mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.15]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id DA9111955D58 for ; Wed, 9 Oct 2024 09:07:25 +0000 (UTC) Received: from lenovo-t14s.redhat.com (unknown [10.39.192.184]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id EAA561956086; Wed, 9 Oct 2024 09:07:24 +0000 (UTC) From: Laurent Vivier To: passt-dev@passt.top Subject: [PATCH v7 4/8] udp: Prepare udp.c to be shared with vhost-user Date: Wed, 9 Oct 2024 11:07:11 +0200 Message-ID: <20241009090716.691361-5-lvivier@redhat.com> In-Reply-To: <20241009090716.691361-1-lvivier@redhat.com> References: <20241009090716.691361-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII"; x-default=true Message-ID-Hash: Z6HG2AC74J3NL7TFLLEYKG2GL5YC3Y5P X-Message-ID-Hash: Z6HG2AC74J3NL7TFLLEYKG2GL5YC3Y5P X-MailFrom: lvivier@redhat.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Laurent Vivier X-Mailman-Version: 3.3.8 Precedence: list List-Id: Development discussion and patches for passt Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Export udp_payload_t, udp_update_hdr4(), udp_update_hdr6() and udp_sock_errs(). Rename udp_listen_sock_handler() to udp_buf_listen_sock_handler() and udp_reply_sock_handler to udp_buf_reply_sock_handler(). Signed-off-by: Laurent Vivier --- udp.c | 74 ++++++++++++++++++++++++++++++-------------------- udp_internal.h | 34 +++++++++++++++++++++++ 2 files changed, 79 insertions(+), 29 deletions(-) create mode 100644 udp_internal.h diff --git a/udp.c b/udp.c index 100610f2472e..8fc5d8099310 100644 --- a/udp.c +++ b/udp.c @@ -109,8 +109,7 @@ #include "pcap.h" #include "log.h" #include "flow_table.h" - -#define UDP_MAX_FRAMES 32 /* max # of frames to receive at once */ +#include "udp_internal.h" /* "Spliced" sockets indexed by bound port (host order) */ static int udp_splice_ns [IP_VERSIONS][NUM_PORTS]; @@ -118,20 +117,8 @@ static int udp_splice_init[IP_VERSIONS][NUM_PORTS]; /* Static buffers */ -/** - * struct udp_payload_t - UDP header and data for inbound messages - * @uh: UDP header - * @data: UDP data - */ -static struct udp_payload_t { - struct udphdr uh; - char data[USHRT_MAX - sizeof(struct udphdr)]; -#ifdef __AVX2__ -} __attribute__ ((packed, aligned(32))) -#else -} __attribute__ ((packed, aligned(__alignof__(unsigned int)))) -#endif -udp_payload[UDP_MAX_FRAMES]; +/* UDP header and data for inbound messages */ +static struct udp_payload_t udp_payload[UDP_MAX_FRAMES]; /* Ethernet header for IPv4 frames */ static struct ethhdr udp4_eth_hdr; @@ -302,9 +289,9 @@ static void udp_splice_send(const struct ctx *c, size_t start, size_t n, * * Return: size of IPv4 payload (UDP header + data) */ -static size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, - const struct flowside *toside, size_t dlen, - bool no_udp_csum) +size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, + const struct flowside *toside, size_t dlen, + bool no_udp_csum) { const struct in_addr *src = inany_v4(&toside->oaddr); const struct in_addr *dst = inany_v4(&toside->eaddr); @@ -345,9 +332,9 @@ static size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, * * Return: size of IPv6 payload (UDP header + data) */ -static size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp, - const struct flowside *toside, size_t dlen, - bool no_udp_csum) +size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp, + const struct flowside *toside, size_t dlen, + bool no_udp_csum) { uint16_t l4len = dlen + sizeof(bp->uh); @@ -477,7 +464,7 @@ static int udp_sock_recverr(int s) * * Return: Number of errors handled, or < 0 if we have an unrecoverable error */ -static int udp_sock_errs(const struct ctx *c, int s, uint32_t events) +int udp_sock_errs(const struct ctx *c, int s, uint32_t events) { unsigned n_err = 0; socklen_t errlen; @@ -554,7 +541,7 @@ static int udp_sock_recv(const struct ctx *c, int s, uint32_t events, } /** - * udp_listen_sock_handler() - Handle new data from socket + * udp_buf_listen_sock_handler() - Handle new data from socket * @c: Execution context * @ref: epoll reference * @events: epoll events bitmap @@ -562,8 +549,9 @@ static int udp_sock_recv(const struct ctx *c, int s, uint32_t events, * * #syscalls recvmmsg */ -void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, - uint32_t events, const struct timespec *now) +static void udp_buf_listen_sock_handler(const struct ctx *c, + union epoll_ref ref, uint32_t events, + const struct timespec *now) { const socklen_t sasize = sizeof(udp_meta[0].s_in); int n, i; @@ -630,7 +618,21 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, } /** - * udp_reply_sock_handler() - Handle new data from flow specific socket + * udp_listen_sock_handler() - Handle new data from socket + * @c: Execution context + * @ref: epoll reference + * @events: epoll events bitmap + * @now: Current timestamp + */ +void udp_listen_sock_handler(const struct ctx *c, + union epoll_ref ref, uint32_t events, + const struct timespec *now) +{ + udp_buf_listen_sock_handler(c, ref, events, now); +} + +/** + * udp_buf_reply_sock_handler() - Handle new data from flow specific socket * @c: Execution context * @ref: epoll reference * @events: epoll events bitmap @@ -638,8 +640,9 @@ void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref, * * #syscalls recvmmsg */ -void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, - uint32_t events, const struct timespec *now) +static void udp_buf_reply_sock_handler(const struct ctx *c, union epoll_ref ref, + uint32_t events, + const struct timespec *now) { flow_sidx_t tosidx = flow_sidx_opposite(ref.flowside); const struct flowside *toside = flowside_at_sidx(tosidx); @@ -684,6 +687,19 @@ void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, } } +/** + * udp_reply_sock_handler() - Handle new data from flow specific socket + * @c: Execution context + * @ref: epoll reference + * @events: epoll events bitmap + * @now: Current timestamp + */ +void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref, + uint32_t events, const struct timespec *now) +{ + udp_buf_reply_sock_handler(c, ref, events, now); +} + /** * udp_tap_handler() - Handle packets from tap * @c: Execution context diff --git a/udp_internal.h b/udp_internal.h new file mode 100644 index 000000000000..cc80e3055423 --- /dev/null +++ b/udp_internal.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later + * Copyright (c) 2021 Red Hat GmbH + * Author: Stefano Brivio + */ + +#ifndef UDP_INTERNAL_H +#define UDP_INTERNAL_H + +#include "tap.h" /* needed by udp_meta_t */ + +#define UDP_MAX_FRAMES 32 /* max # of frames to receive at once */ + +/** + * struct udp_payload_t - UDP header and data for inbound messages + * @uh: UDP header + * @data: UDP data + */ +struct udp_payload_t { + struct udphdr uh; + char data[USHRT_MAX - sizeof(struct udphdr)]; +#ifdef __AVX2__ +} __attribute__ ((packed, aligned(32))); +#else +} __attribute__ ((packed, aligned(__alignof__(unsigned int)))); +#endif + +size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp, + const struct flowside *toside, size_t dlen, + bool no_udp_csum); +size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp, + const struct flowside *toside, size_t dlen, + bool no_udp_csum); +int udp_sock_errs(const struct ctx *c, int s, uint32_t events); +#endif /* UDP_INTERNAL_H */ -- 2.46.2