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From: Laurent Vivier <lvivier@redhat.com>
To: passt-dev@passt.top
Cc: Laurent Vivier <lvivier@redhat.com>
Subject: [PATCH v5 07/12] udp: Pass queue pair explicitly through UDP send path
Date: Tue, 16 Jun 2026 14:51:25 +0200	[thread overview]
Message-ID: <20260616125130.1324274-8-lvivier@redhat.com> (raw)
In-Reply-To: <20260616125130.1324274-1-lvivier@redhat.com>

Thread the queue pair parameter through the UDP socket handler and send
path, replacing hardcoded QPAIR_DEFAULT values.  This is the UDP
counterpart to the equivalent TCP and ICMP changes.

The queue pair is passed from passt_worker() through
udp_listen_sock_handler(), udp_sock_handler(), udp_sock_fwd(), and down
into udp_sock_errs()/udp_sock_recverr() for ICMP error generation, as
well as udp_vu_sock_to_tap() for vhost-user delivery.

On the flow handling side, flow_defer_handler() receives the queue pair
and passes it to udp_flow_defer() and udp_flush_flow(), so that deferred
UDP datagrams are forwarded on the correct queue.

No functional change.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
 flow.c         |  5 +++--
 flow.h         |  3 ++-
 passt.c        |  8 +++++---
 tap.c          |  4 ++--
 udp.c          | 45 +++++++++++++++++++++++++--------------------
 udp.h          |  9 +++++----
 udp_flow.c     | 24 ++++++++++++++----------
 udp_flow.h     |  4 ++--
 udp_internal.h |  3 ++-
 udp_vu.c       |  5 +++--
 udp_vu.h       |  3 ++-
 11 files changed, 65 insertions(+), 48 deletions(-)

diff --git a/flow.c b/flow.c
index 565ed2b2f7e7..c93b73549c90 100644
--- a/flow.c
+++ b/flow.c
@@ -884,7 +884,8 @@ flow_sidx_t flow_lookup_sa(const struct ctx *c, uint8_t proto, uint8_t pif,
  * @c:		Execution context
  * @now:	Current timestamp
  */
-void flow_defer_handler(const struct ctx *c, const struct timespec *now)
+void flow_defer_handler(const struct ctx *c, const struct timespec *now,
+			unsigned int qpair)
 {
 	struct flow_free_cluster *free_head = NULL;
 	unsigned *last_next = &flow_first_free;
@@ -923,7 +924,7 @@ void flow_defer_handler(const struct ctx *c, const struct timespec *now)
 				closed = icmp_ping_timer(c, &flow->ping, now);
 			break;
 		case FLOW_UDP:
-			closed = udp_flow_defer(c, &flow->udp, now);
+			closed = udp_flow_defer(c, &flow->udp, now, qpair);
 			if (!closed && timer)
 				closed = udp_flow_timer(c, &flow->udp, now);
 			break;
diff --git a/flow.h b/flow.h
index 6c6a9260aa23..cae259fe7037 100644
--- a/flow.h
+++ b/flow.h
@@ -270,7 +270,8 @@ void flow_epollid_set(struct flow_common *f, int epollid);
 int flow_epoll_set(const struct flow_common *f, int command, uint32_t events,
 		   int fd, unsigned int sidei);
 void flow_epollid_register(int epollid, int epollfd);
-void flow_defer_handler(const struct ctx *c, const struct timespec *now);
+void flow_defer_handler(const struct ctx *c, const struct timespec *now,
+			unsigned int qpair);
 int flow_migrate_source_early(struct ctx *c, const struct migrate_stage *stage,
 			      int fd);
 int flow_migrate_source_pre(struct ctx *c, const struct migrate_stage *stage,
diff --git a/passt.c b/passt.c
index 9569f920ee28..41239991451f 100644
--- a/passt.c
+++ b/passt.c
@@ -106,7 +106,7 @@ static void post_handler(struct ctx *c, const struct timespec *now,
 	if (!c->no_tcp)
 		tcp_defer_handler(c, now, qpair);
 
-	flow_defer_handler(c, now);
+	flow_defer_handler(c, now, qpair);
 	fwd_scan_ports_timer(c, now);
 
 	if (!c->no_ndp)
@@ -265,10 +265,12 @@ static void passt_worker(void *opaque, int nfds, struct epoll_event *events)
 			tcp_timer_handler(c, ref, QPAIR_DEFAULT);
 			break;
 		case EPOLL_TYPE_UDP_LISTEN:
-			udp_listen_sock_handler(c, ref, eventmask, &now);
+			udp_listen_sock_handler(c, ref, eventmask, &now,
+						QPAIR_DEFAULT);
 			break;
 		case EPOLL_TYPE_UDP:
-			udp_sock_handler(c, ref, eventmask, &now);
+			udp_sock_handler(c, ref, eventmask, &now,
+					 QPAIR_DEFAULT);
 			break;
 		case EPOLL_TYPE_PING:
 			icmp_sock_handler(c, ref);
diff --git a/tap.c b/tap.c
index ba2a573fa630..e8fd3661ebb5 100644
--- a/tap.c
+++ b/tap.c
@@ -875,7 +875,7 @@ append:
 			if (c->no_udp)
 				continue;
 			for (k = 0; k < p->count; )
-				k += udp_tap_handler(c, PIF_TAP, AF_INET,
+				k += udp_tap_handler(c, qpair, PIF_TAP, AF_INET,
 						     &seq->saddr, &seq->daddr,
 						     seq->ttl, p, k, now);
 		}
@@ -1124,7 +1124,7 @@ append:
 			if (c->no_udp)
 				continue;
 			for (k = 0; k < p->count; )
-				k += udp_tap_handler(c, PIF_TAP, AF_INET6,
+				k += udp_tap_handler(c, qpair, PIF_TAP, AF_INET6,
 						     &seq->saddr, &seq->daddr,
 						     seq->hop_limit, p, k, now);
 		}
diff --git a/udp.c b/udp.c
index a295cb0e97cf..e91d44aa33d6 100644
--- a/udp.c
+++ b/udp.c
@@ -403,13 +403,14 @@ static void udp_tap_prepare(const struct mmsghdr *mmh,
 /**
  * udp_send_tap_icmp4() - Construct and send ICMPv4 to local peer
  * @c:		Execution context
+ * @qpair:	Queue pair on which to send the ICMPv4 packet
  * @ee:	Extended error descriptor
  * @toside:	Destination side of flow
  * @saddr:	Address of ICMP generating node
  * @in:	First bytes (max 8) of original UDP message body
  * @dlen:	Length of the read part of original UDP message body
  */
-static void udp_send_tap_icmp4(const struct ctx *c,
+static void udp_send_tap_icmp4(const struct ctx *c, unsigned int qpair,
 			       const struct sock_extended_err *ee,
 			       const struct flowside *toside,
 			       struct in_addr saddr,
@@ -445,13 +446,14 @@ static void udp_send_tap_icmp4(const struct ctx *c,
 	/* Try to obtain the MAC address of the generating node */
 	saddr_any = inany_from_v4(saddr);
 	fwd_neigh_mac_get(c, &saddr_any, tap_omac);
-	tap_icmp4_send(c, QPAIR_DEFAULT, saddr, eaddr, &msg, tap_omac, msglen);
+	tap_icmp4_send(c, qpair, saddr, eaddr, &msg, tap_omac, msglen);
 }
 
 
 /**
  * udp_send_tap_icmp6() - Construct and send ICMPv6 to local peer
  * @c:		Execution context
+ * @qpair:	Queue pair on which to send the ICMPv6 packet
  * @ee:	Extended error descriptor
  * @toside:	Destination side of flow
  * @saddr:	Address of ICMP generating node
@@ -459,7 +461,7 @@ static void udp_send_tap_icmp4(const struct ctx *c,
  * @dlen:	Length of the read part of original UDP message body
  * @flow:	IPv6 flow identifier
  */
-static void udp_send_tap_icmp6(const struct ctx *c,
+static void udp_send_tap_icmp6(const struct ctx *c, unsigned int qpair,
 			       const struct sock_extended_err *ee,
 			       const struct flowside *toside,
 			       const struct in6_addr *saddr,
@@ -493,7 +495,7 @@ static void udp_send_tap_icmp6(const struct ctx *c,
 
 	/* Try to obtain the MAC address of the generating node */
 	fwd_neigh_mac_get(c, (union inany_addr *) saddr, tap_omac);
-	tap_icmp6_send(c, QPAIR_DEFAULT, saddr, eaddr, &msg, tap_omac, msglen);
+	tap_icmp6_send(c, qpair, saddr, eaddr, &msg, tap_omac, msglen);
 }
 
 /**
@@ -546,7 +548,7 @@ static int udp_pktinfo(struct msghdr *msg, union inany_addr *dst)
  * #syscalls recvmsg
  */
 static int udp_sock_recverr(const struct ctx *c, int s, flow_sidx_t sidx,
-			    uint8_t pif, in_port_t port)
+			    uint8_t pif, in_port_t port, unsigned int qpair)
 {
 	char buf[PKTINFO_SPACE + RECVERR_SPACE];
 	const struct sock_extended_err *ee;
@@ -653,12 +655,12 @@ static int udp_sock_recverr(const struct ctx *c, int s, flow_sidx_t sidx,
 	if (hdr->cmsg_level == IPPROTO_IP &&
 	    (o4 = inany_v4(&otap)) && inany_v4(&toside->eaddr)) {
 		dlen = MIN(dlen, ICMP4_MAX_DLEN);
-		udp_send_tap_icmp4(c, ee, toside, *o4, data, dlen);
+		udp_send_tap_icmp4(c, qpair, ee, toside, *o4, data, dlen);
 		return 1;
 	}
 
 	if (hdr->cmsg_level == IPPROTO_IPV6 && !inany_v4(&toside->eaddr)) {
-		udp_send_tap_icmp6(c, ee, toside, &otap.a6, data, dlen,
+		udp_send_tap_icmp6(c, qpair, ee, toside, &otap.a6, data, dlen,
 				   FLOW_IDX(uflow));
 		return 1;
 	}
@@ -685,7 +687,7 @@ fail:
  * Return: number of errors handled, or < 0 if we have an unrecoverable error
  */
 static int udp_sock_errs(const struct ctx *c, int s, flow_sidx_t sidx,
-			 uint8_t pif, in_port_t port)
+			 uint8_t pif, in_port_t port, unsigned int qpair)
 {
 	unsigned n_err = 0;
 	socklen_t errlen;
@@ -694,7 +696,7 @@ static int udp_sock_errs(const struct ctx *c, int s, flow_sidx_t sidx,
 	assert(!c->no_udp);
 
 	/* Empty the error queue */
-	while ((rc = udp_sock_recverr(c, s, sidx, pif, port)) > 0)
+	while ((rc = udp_sock_recverr(c, s, sidx, pif, port, qpair)) > 0)
 		n_err += rc;
 
 	if (rc < 0)
@@ -853,7 +855,8 @@ static void udp_buf_sock_to_tap(const struct ctx *c, int s, int n,
  * @now:	Current timestamp
  */
 void udp_sock_fwd(const struct ctx *c, int s, int rule_hint,
-		  uint8_t frompif, in_port_t port, const struct timespec *now)
+		  uint8_t frompif, in_port_t port, const struct timespec *now,
+		  unsigned int qpair)
 {
 	union sockaddr_inany src;
 	union inany_addr dst;
@@ -869,7 +872,7 @@ void udp_sock_fwd(const struct ctx *c, int s, int rule_hint,
 			      strerror_(-rc));
 			/* Clear errors & carry on */
 			if (udp_sock_errs(c, s, FLOW_SIDX_NONE,
-					  frompif, port) < 0) {
+					  frompif, port, qpair) < 0) {
 				err_ratelimit(now,
 "UDP: Unrecoverable error on listening socket: (%s port %hu)",
 				    pif_name(frompif), port);
@@ -886,7 +889,7 @@ void udp_sock_fwd(const struct ctx *c, int s, int rule_hint,
 			udp_sock_to_sock(c, s, 1, tosidx);
 		} else if (topif == PIF_TAP) {
 			if (c->mode == MODE_VU)
-				udp_vu_sock_to_tap(c, s, 1, tosidx);
+				udp_vu_sock_to_tap(c, s, 1, tosidx, qpair);
 			else
 				udp_buf_sock_to_tap(c, s, 1, tosidx);
 		} else if (flow_sidx_valid(tosidx)) {
@@ -919,11 +922,11 @@ void udp_sock_fwd(const struct ctx *c, int s, int rule_hint,
  */
 void udp_listen_sock_handler(const struct ctx *c,
 			     union epoll_ref ref, uint32_t events,
-			     const struct timespec *now)
+			     const struct timespec *now, unsigned int qpair)
 {
 	if (events & (EPOLLERR | EPOLLIN)) {
 		udp_sock_fwd(c, ref.fd, ref.listen.rule,
-			     ref.listen.pif, ref.listen.port, now);
+			     ref.listen.pif, ref.listen.port, now, qpair);
 	}
 }
 
@@ -933,16 +936,17 @@ void udp_listen_sock_handler(const struct ctx *c,
  * @ref:	epoll reference
  * @events:	epoll events bitmap
  * @now:	Current timestamp
+ * @qpair:	Queue pair to process
  */
-void udp_sock_handler(const struct ctx *c, union epoll_ref ref,
-		      uint32_t events, const struct timespec *now)
+void udp_sock_handler(const struct ctx *c, union epoll_ref ref, uint32_t events,
+		      const struct timespec *now, unsigned int qpair)
 {
 	struct udp_flow *uflow = udp_at_sidx(ref.flowside);
 
 	assert(!c->no_udp && uflow);
 
 	if (events & EPOLLERR) {
-		if (udp_sock_errs(c, ref.fd, ref.flowside, PIF_NONE, 0) < 0) {
+		if (udp_sock_errs(c, ref.fd, ref.flowside, PIF_NONE, 0, qpair) < 0) {
 			flow_err(uflow, "Unrecoverable error on flow socket");
 			goto fail;
 		}
@@ -969,7 +973,7 @@ void udp_sock_handler(const struct ctx *c, union epoll_ref ref,
 		} else if (topif == PIF_TAP) {
 			if (c->mode == MODE_VU) {
 				udp_vu_sock_to_tap(c, s, UDP_MAX_FRAMES,
-						   tosidx);
+						   tosidx, qpair);
 			} else {
 				udp_buf_sock_to_tap(c, s, n, tosidx);
 			}
@@ -991,6 +995,7 @@ fail:
 /**
  * udp_tap_handler() - Handle packets from tap
  * @c:		Execution context
+ * @qpair:	Queue pair to process
  * @pif:	pif on which the packet is arriving
  * @af:		Address family, AF_INET or AF_INET6
  * @saddr:	Source address
@@ -1004,7 +1009,7 @@ fail:
  *
  * #syscalls sendmmsg
  */
-int udp_tap_handler(const struct ctx *c, uint8_t pif,
+int udp_tap_handler(const struct ctx *c, unsigned int qpair, uint8_t pif,
 		    sa_family_t af, const void *saddr, const void *daddr,
 		    uint8_t ttl, const struct pool *p, int idx,
 		    const struct timespec *now)
@@ -1037,7 +1042,7 @@ int udp_tap_handler(const struct ctx *c, uint8_t pif,
 	src = ntohs(uh->source);
 	dst = ntohs(uh->dest);
 
-	tosidx = udp_flow_from_tap(c, pif, af, saddr, daddr, src, dst, now);
+	tosidx = udp_flow_from_tap(c, qpair, pif, af, saddr, daddr, src, dst, now);
 	if (!(uflow = udp_at_sidx(tosidx))) {
 		char sstr[INET6_ADDRSTRLEN], dstr[INET6_ADDRSTRLEN];
 
diff --git a/udp.h b/udp.h
index 42d7a1c708cc..35b12ea2c9a6 100644
--- a/udp.h
+++ b/udp.h
@@ -12,10 +12,11 @@
 #include "fwd.h"
 
 void udp_listen_sock_handler(const struct ctx *c, union epoll_ref ref,
-			     uint32_t events, const struct timespec *now);
-void udp_sock_handler(const struct ctx *c, union epoll_ref ref,
-		      uint32_t events, const struct timespec *now);
-int udp_tap_handler(const struct ctx *c, uint8_t pif,
+			     uint32_t events, const struct timespec *now,
+			     unsigned int qpair);
+void udp_sock_handler(const struct ctx *c, union epoll_ref ref, uint32_t events,
+		      const struct timespec *now, unsigned int qpair);
+int udp_tap_handler(const struct ctx *c, unsigned int qpair, uint8_t pif,
 		    sa_family_t af, const void *saddr, const void *daddr,
 		    uint8_t ttl, const struct pool *p, int idx,
 		    const struct timespec *now);
diff --git a/udp_flow.c b/udp_flow.c
index 35417bc48a39..143f265493fa 100644
--- a/udp_flow.c
+++ b/udp_flow.c
@@ -127,6 +127,7 @@ static int udp_flow_sock(const struct ctx *c,
 /**
  * udp_flow_new() - Common setup for a new UDP flow
  * @c:		Execution context
+ * @qpair:	Queue pair for the flow
  * @flow:	Initiated flow
  * @rule_hint:	Index of forwarding rule, or -1 if unknown
  * @now:	Timestamp
@@ -136,8 +137,9 @@ static int udp_flow_sock(const struct ctx *c,
  *
  * #syscalls getsockname
  */
-static flow_sidx_t udp_flow_new(const struct ctx *c, union flow *flow,
-				int rule_hint, const struct timespec *now)
+static flow_sidx_t udp_flow_new(const struct ctx *c, unsigned int qpair,
+				union flow *flow, int rule_hint,
+				const struct timespec *now)
 {
 	struct udp_flow *uflow = NULL;
 	const struct flowside *tgt;
@@ -152,6 +154,7 @@ static flow_sidx_t udp_flow_new(const struct ctx *c, union flow *flow,
 	uflow->ttl[INISIDE] = uflow->ttl[TGTSIDE] = 0;
 	uflow->activity[INISIDE] = 1;
 	uflow->activity[TGTSIDE] = 0;
+	(void)qpair;
 
 	flow_foreach_sidei(sidei) {
 		if (pif_is_socket(uflow->f.pif[sidei]))
@@ -254,12 +257,13 @@ flow_sidx_t udp_flow_from_sock(const struct ctx *c, uint8_t pif,
 		return FLOW_SIDX_NONE;
 	}
 
-	return udp_flow_new(c, flow, rule_hint, now);
+	return udp_flow_new(c, QPAIR_DEFAULT, flow, rule_hint, now);
 }
 
 /**
  * udp_flow_from_tap() - Find or create UDP flow for tap packets
  * @c:		Execution context
+ * @qpair:	Queue pair for the flow
  * @pif:	pif on which the packet is arriving
  * @af:		Address family, AF_INET or AF_INET6
  * @saddr:	Source address on guest side
@@ -270,7 +274,7 @@ flow_sidx_t udp_flow_from_sock(const struct ctx *c, uint8_t pif,
  * Return: sidx for the destination side of the flow for this packet, or
  *         FLOW_SIDX_NONE if we couldn't find or create a flow.
  */
-flow_sidx_t udp_flow_from_tap(const struct ctx *c,
+flow_sidx_t udp_flow_from_tap(const struct ctx *c, unsigned int qpair,
 			      uint8_t pif, sa_family_t af,
 			      const void *saddr, const void *daddr,
 			      in_port_t srcport, in_port_t dstport,
@@ -310,7 +314,7 @@ flow_sidx_t udp_flow_from_tap(const struct ctx *c,
 		return FLOW_SIDX_NONE;
 	}
 
-	return udp_flow_new(c, flow, FWD_NO_HINT, now);
+	return udp_flow_new(c, qpair, flow, FWD_NO_HINT, now);
 }
 
 /**
@@ -322,12 +326,12 @@ flow_sidx_t udp_flow_from_tap(const struct ctx *c,
  */
 static void udp_flush_flow(const struct ctx *c,
 			   const struct udp_flow *uflow, unsigned sidei,
-			   const struct timespec *now)
+			   const struct timespec *now, unsigned int qpair)
 {
 	/* We don't know exactly where the datagrams will come from, but we know
 	 * they'll have an interface and oport matching this flow */
 	udp_sock_fwd(c, uflow->s[sidei], -1, uflow->f.pif[sidei],
-		     uflow->f.side[sidei].oport, now);
+		     uflow->f.side[sidei].oport, now, qpair);
 }
 
 /**
@@ -339,14 +343,14 @@ static void udp_flush_flow(const struct ctx *c,
  * Return: true if the connection is ready to free, false otherwise
  */
 bool udp_flow_defer(const struct ctx *c, struct udp_flow *uflow,
-		    const struct timespec *now)
+		    const struct timespec *now, unsigned int qpair)
 {
 	if (uflow->flush0) {
-		udp_flush_flow(c, uflow, INISIDE, now);
+		udp_flush_flow(c, uflow, INISIDE, now, qpair);
 		uflow->flush0 = false;
 	}
 	if (uflow->flush1) {
-		udp_flush_flow(c, uflow, TGTSIDE, now);
+		udp_flush_flow(c, uflow, TGTSIDE, now, qpair);
 		uflow->flush1 = false;
 	}
 	return uflow->closed;
diff --git a/udp_flow.h b/udp_flow.h
index 62cc9b3aae1f..5a297c61646a 100644
--- a/udp_flow.h
+++ b/udp_flow.h
@@ -44,14 +44,14 @@ flow_sidx_t udp_flow_from_sock(const struct ctx *c, uint8_t pif,
 			       const union inany_addr *dst, in_port_t port,
 			       const union sockaddr_inany *s_in,
 			       int rule_hint, const struct timespec *now);
-flow_sidx_t udp_flow_from_tap(const struct ctx *c,
+flow_sidx_t udp_flow_from_tap(const struct ctx *c, unsigned int qpair,
 			      uint8_t pif, sa_family_t af,
 			      const void *saddr, const void *daddr,
 			      in_port_t srcport, in_port_t dstport,
 			      const struct timespec *now);
 void udp_flow_close(const struct ctx *c, struct udp_flow *uflow);
 bool udp_flow_defer(const struct ctx *c, struct udp_flow *uflow,
-		    const struct timespec *now);
+		    const struct timespec *now, unsigned int qpair);
 bool udp_flow_timer(const struct ctx *c, struct udp_flow *uflow,
 		    const struct timespec *now);
 void udp_flow_activity(struct udp_flow *uflow, unsigned int sidei,
diff --git a/udp_internal.h b/udp_internal.h
index 361cc7495a01..0cd6da49fc05 100644
--- a/udp_internal.h
+++ b/udp_internal.h
@@ -34,6 +34,7 @@ size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udphdr *uh,
 		       const struct flowside *toside, size_t dlen,
 		       bool no_udp_csum);
 void udp_sock_fwd(const struct ctx *c, int s, int rule_hint,
-		  uint8_t frompif, in_port_t port, const struct timespec *now);
+		  uint8_t frompif, in_port_t port, const struct timespec *now,
+		  unsigned int qpair);
 
 #endif /* UDP_INTERNAL_H */
diff --git a/udp_vu.c b/udp_vu.c
index b1a8ad76a691..864e7a99b8d9 100644
--- a/udp_vu.c
+++ b/udp_vu.c
@@ -141,13 +141,14 @@ static void udp_vu_prepare(const struct ctx *c, struct iov_tail *data,
  * @n:		Maximum number of datagrams to forward
  * @tosidx:	Flow & side to forward data from @s to
  */
-void udp_vu_sock_to_tap(const struct ctx *c, int s, int n, flow_sidx_t tosidx)
+void udp_vu_sock_to_tap(const struct ctx *c, int s, int n, flow_sidx_t tosidx,
+			 unsigned int qpair)
 {
 	const struct flowside *toside = flowside_at_sidx(tosidx);
 	bool v6 = !(inany_v4(&toside->eaddr) && inany_v4(&toside->oaddr));
 	static struct vu_virtq_element elem[VIRTQUEUE_MAX_SIZE];
 	static struct iovec iov_vu[VIRTQUEUE_MAX_SIZE];
-	int rx_queue = QPAIR_TOGUEST_QUEUE(QPAIR_DEFAULT);
+	int rx_queue = QPAIR_TOGUEST_QUEUE(qpair);
 	struct vu_dev *vdev = c->vdev;
 	struct vu_virtq *vq = &vdev->vq[rx_queue];
 	size_t hdrlen = udp_vu_hdrlen(v6);
diff --git a/udp_vu.h b/udp_vu.h
index 1e38af35ad4e..40ab28119b10 100644
--- a/udp_vu.h
+++ b/udp_vu.h
@@ -10,6 +10,7 @@
 
 void udp_vu_listen_sock_data(const struct ctx *c, union epoll_ref ref,
 			     const struct timespec *now);
-void udp_vu_sock_to_tap(const struct ctx *c, int s, int n, flow_sidx_t tosidx);
+void udp_vu_sock_to_tap(const struct ctx *c, int s, int n, flow_sidx_t tosidx,
+			unsigned int qpair);
 
 #endif /* UDP_VU_H */
-- 
2.54.0


  parent reply	other threads:[~2026-06-16 12:51 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-16 12:51 [PATCH v5 00/12] vhost-user: Add multiqueue support Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 01/12] tap: Remove pool parameter from tap4_handler() and tap6_handler() Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 02/12] vhost-user: Advertise multiqueue support Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 03/12] test: Add multiqueue support to vhost-user test infrastructure Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 04/12] tap: Thread queue pair through all remaining tap paths Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 05/12] arp: Pass queue pair explicitly through ARP send path Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 06/12] tcp: Pass queue pair explicitly through TCP " Laurent Vivier
2026-06-16 12:51 ` Laurent Vivier [this message]
2026-06-16 12:51 ` [PATCH v5 08/12] dhcp/dhcpv6: Pass queue pair explicitly through DHCP " Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 09/12] icmp: Pass queue pair explicitly through ICMP " Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 10/12] ndp: Pass queue pair explicitly through NDP " Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 11/12] flow: Add queue pair tracking to flow management Laurent Vivier
2026-06-16 12:51 ` [PATCH v5 12/12] flow: Derive epoll fd from queue pair, removing epollid field Laurent Vivier

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