From: Stefano Stabellini <sstabellini@kernel.org> To: xen-devel@lists.xen.org Cc: linux-kernel@vger.kernel.org, sstabellini@kernel.org, jgross@suse.com, boris.ostrovsky@oracle.com, Stefano Stabellini <stefano@aporeto.com> Subject: [PATCH v4 07/13] xen/pvcalls: implement listen command Date: Fri, 15 Sep 2017 16:00:34 -0700 [thread overview] Message-ID: <1505516440-11111-7-git-send-email-sstabellini@kernel.org> (raw) In-Reply-To: <1505516440-11111-1-git-send-email-sstabellini@kernel.org> Send PVCALLS_LISTEN to the backend. Signed-off-by: Stefano Stabellini <stefano@aporeto.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> CC: boris.ostrovsky@oracle.com CC: jgross@suse.com --- drivers/xen/pvcalls-front.c | 56 +++++++++++++++++++++++++++++++++++++++++++++ drivers/xen/pvcalls-front.h | 1 + 2 files changed, 57 insertions(+) diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c index 50b6588..4ecc1e5 100644 --- a/drivers/xen/pvcalls-front.c +++ b/drivers/xen/pvcalls-front.c @@ -414,6 +414,62 @@ int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len) return 0; } +int pvcalls_front_listen(struct socket *sock, int backlog) +{ + struct pvcalls_bedata *bedata; + struct sock_mapping *map; + struct xen_pvcalls_request *req; + int notify, req_id, ret; + + pvcalls_enter; + if (!pvcalls_front_dev) { + pvcalls_exit; + return -ENOTCONN; + } + bedata = dev_get_drvdata(&pvcalls_front_dev->dev); + + map = (struct sock_mapping *) sock->sk->sk_send_head; + if (!map) { + pvcalls_exit; + return -ENOTSOCK; + } + + if (map->passive.status != PVCALLS_STATUS_BIND) { + pvcalls_exit; + return -EOPNOTSUPP; + } + + spin_lock(&bedata->socket_lock); + ret = get_request(bedata, &req_id); + if (ret < 0) { + spin_unlock(&bedata->socket_lock); + pvcalls_exit; + return ret; + } + req = RING_GET_REQUEST(&bedata->ring, req_id); + req->req_id = req_id; + req->cmd = PVCALLS_LISTEN; + req->u.listen.id = (uint64_t) map; + req->u.listen.backlog = backlog; + + bedata->ring.req_prod_pvt++; + RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&bedata->ring, notify); + spin_unlock(&bedata->socket_lock); + if (notify) + notify_remote_via_irq(bedata->irq); + + wait_event(bedata->inflight_req, + READ_ONCE(bedata->rsp[req_id].req_id) == req_id); + + map->passive.status = PVCALLS_STATUS_LISTEN; + ret = bedata->rsp[req_id].ret; + /* read ret, then set this rsp slot to be reused */ + smp_mb(); + WRITE_ONCE(bedata->rsp[req_id].req_id, PVCALLS_INVALID_ID); + pvcalls_exit; + return ret; +} + static const struct xenbus_device_id pvcalls_front_ids[] = { { "pvcalls" }, { "" } diff --git a/drivers/xen/pvcalls-front.h b/drivers/xen/pvcalls-front.h index 8b0a274..aa8fe10 100644 --- a/drivers/xen/pvcalls-front.h +++ b/drivers/xen/pvcalls-front.h @@ -9,5 +9,6 @@ int pvcalls_front_connect(struct socket *sock, struct sockaddr *addr, int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len); +int pvcalls_front_listen(struct socket *sock, int backlog); #endif -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Stefano Stabellini <sstabellini@kernel.org> To: xen-devel@lists.xen.org Cc: jgross@suse.com, Stefano Stabellini <stefano@aporeto.com>, boris.ostrovsky@oracle.com, sstabellini@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 07/13] xen/pvcalls: implement listen command Date: Fri, 15 Sep 2017 16:00:34 -0700 [thread overview] Message-ID: <1505516440-11111-7-git-send-email-sstabellini@kernel.org> (raw) In-Reply-To: <1505516440-11111-1-git-send-email-sstabellini@kernel.org> Send PVCALLS_LISTEN to the backend. Signed-off-by: Stefano Stabellini <stefano@aporeto.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> CC: boris.ostrovsky@oracle.com CC: jgross@suse.com --- drivers/xen/pvcalls-front.c | 56 +++++++++++++++++++++++++++++++++++++++++++++ drivers/xen/pvcalls-front.h | 1 + 2 files changed, 57 insertions(+) diff --git a/drivers/xen/pvcalls-front.c b/drivers/xen/pvcalls-front.c index 50b6588..4ecc1e5 100644 --- a/drivers/xen/pvcalls-front.c +++ b/drivers/xen/pvcalls-front.c @@ -414,6 +414,62 @@ int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len) return 0; } +int pvcalls_front_listen(struct socket *sock, int backlog) +{ + struct pvcalls_bedata *bedata; + struct sock_mapping *map; + struct xen_pvcalls_request *req; + int notify, req_id, ret; + + pvcalls_enter; + if (!pvcalls_front_dev) { + pvcalls_exit; + return -ENOTCONN; + } + bedata = dev_get_drvdata(&pvcalls_front_dev->dev); + + map = (struct sock_mapping *) sock->sk->sk_send_head; + if (!map) { + pvcalls_exit; + return -ENOTSOCK; + } + + if (map->passive.status != PVCALLS_STATUS_BIND) { + pvcalls_exit; + return -EOPNOTSUPP; + } + + spin_lock(&bedata->socket_lock); + ret = get_request(bedata, &req_id); + if (ret < 0) { + spin_unlock(&bedata->socket_lock); + pvcalls_exit; + return ret; + } + req = RING_GET_REQUEST(&bedata->ring, req_id); + req->req_id = req_id; + req->cmd = PVCALLS_LISTEN; + req->u.listen.id = (uint64_t) map; + req->u.listen.backlog = backlog; + + bedata->ring.req_prod_pvt++; + RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(&bedata->ring, notify); + spin_unlock(&bedata->socket_lock); + if (notify) + notify_remote_via_irq(bedata->irq); + + wait_event(bedata->inflight_req, + READ_ONCE(bedata->rsp[req_id].req_id) == req_id); + + map->passive.status = PVCALLS_STATUS_LISTEN; + ret = bedata->rsp[req_id].ret; + /* read ret, then set this rsp slot to be reused */ + smp_mb(); + WRITE_ONCE(bedata->rsp[req_id].req_id, PVCALLS_INVALID_ID); + pvcalls_exit; + return ret; +} + static const struct xenbus_device_id pvcalls_front_ids[] = { { "pvcalls" }, { "" } diff --git a/drivers/xen/pvcalls-front.h b/drivers/xen/pvcalls-front.h index 8b0a274..aa8fe10 100644 --- a/drivers/xen/pvcalls-front.h +++ b/drivers/xen/pvcalls-front.h @@ -9,5 +9,6 @@ int pvcalls_front_connect(struct socket *sock, struct sockaddr *addr, int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len); +int pvcalls_front_listen(struct socket *sock, int backlog); #endif -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
next prev parent reply other threads:[~2017-09-15 23:02 UTC|newest] Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-09-15 23:00 [PATCH v4 00/13] introduce the Xen PV Calls frontend Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 01/13] xen/pvcalls: introduce the pvcalls xenbus frontend Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 02/13] xen/pvcalls: implement frontend disconnect Stefano Stabellini 2017-09-20 20:32 ` Boris Ostrovsky 2017-09-20 20:32 ` Boris Ostrovsky 2017-10-06 17:51 ` Stefano Stabellini 2017-10-06 20:21 ` Boris Ostrovsky 2017-10-06 20:21 ` Boris Ostrovsky 2017-10-06 20:29 ` Stefano Stabellini 2017-10-06 20:29 ` Stefano Stabellini 2017-10-06 20:31 ` Boris Ostrovsky 2017-10-06 20:31 ` Boris Ostrovsky 2017-10-06 17:51 ` Stefano Stabellini 2017-09-20 20:59 ` Boris Ostrovsky 2017-10-07 0:08 ` Stefano Stabellini 2017-10-07 0:08 ` Stefano Stabellini 2017-09-20 20:59 ` Boris Ostrovsky 2017-09-15 23:00 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 03/13] xen/pvcalls: connect to the backend Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-20 21:08 ` Boris Ostrovsky 2017-09-20 21:08 ` Boris Ostrovsky 2017-09-15 23:00 ` [PATCH v4 04/13] xen/pvcalls: implement socket command and handle events Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-21 17:42 ` Boris Ostrovsky 2017-09-21 17:42 ` Boris Ostrovsky 2017-10-06 18:38 ` Stefano Stabellini 2017-10-06 20:36 ` Boris Ostrovsky 2017-10-06 20:36 ` Boris Ostrovsky 2017-10-06 18:38 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 05/13] xen/pvcalls: implement connect command Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-21 18:28 ` Boris Ostrovsky 2017-09-21 18:28 ` Boris Ostrovsky 2017-10-06 17:44 ` Stefano Stabellini 2017-10-06 17:54 ` Stefano Stabellini 2017-10-06 17:54 ` Stefano Stabellini 2017-10-06 17:44 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 06/13] xen/pvcalls: implement bind command Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-21 19:40 ` Boris Ostrovsky 2017-10-06 20:35 ` Stefano Stabellini 2017-10-06 20:35 ` Stefano Stabellini 2017-09-21 19:40 ` Boris Ostrovsky 2017-09-15 23:00 ` Stefano Stabellini [this message] 2017-09-15 23:00 ` [PATCH v4 07/13] xen/pvcalls: implement listen command Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 08/13] xen/pvcalls: implement accept command Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-22 0:00 ` Boris Ostrovsky 2017-09-22 0:00 ` Boris Ostrovsky 2017-10-06 22:06 ` Stefano Stabellini 2017-10-06 22:06 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 09/13] xen/pvcalls: implement sendmsg Stefano Stabellini 2017-09-22 21:57 ` Boris Ostrovsky 2017-10-06 21:43 ` Stefano Stabellini 2017-10-06 21:43 ` Stefano Stabellini 2017-09-22 21:57 ` Boris Ostrovsky 2017-09-15 23:00 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 10/13] xen/pvcalls: implement recvmsg Stefano Stabellini 2017-09-22 22:05 ` Boris Ostrovsky 2017-10-06 20:46 ` Stefano Stabellini 2017-10-06 20:46 ` Stefano Stabellini 2017-09-22 22:05 ` Boris Ostrovsky 2017-09-15 23:00 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 11/13] xen/pvcalls: implement poll command Stefano Stabellini 2017-09-19 15:19 ` Andrea Parri 2017-09-19 15:19 ` Andrea Parri 2017-10-06 23:33 ` Stefano Stabellini 2017-10-06 23:33 ` Stefano Stabellini 2017-09-22 22:27 ` Boris Ostrovsky 2017-09-22 22:27 ` Boris Ostrovsky 2017-10-06 23:39 ` Stefano Stabellini 2017-10-06 23:39 ` Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 12/13] xen/pvcalls: implement release command Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini 2017-09-22 22:43 ` Boris Ostrovsky 2017-09-22 22:43 ` Boris Ostrovsky 2017-09-22 22:48 ` Boris Ostrovsky 2017-09-22 22:48 ` Boris Ostrovsky 2017-10-06 23:49 ` Stefano Stabellini 2017-10-06 23:49 ` Stefano Stabellini 2017-09-15 23:00 ` [PATCH v4 13/13] xen: introduce a Kconfig option to enable the pvcalls frontend Stefano Stabellini 2017-09-15 23:00 ` Stefano Stabellini
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