From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, olivier.matz@6wind.com,
amorenoz@redhat.com, david.marchand@redhat.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH v3 29/44] net/virtio: add Virtio-user memory tables ops
Date: Mon, 25 Jan 2021 18:14:29 +0100 [thread overview]
Message-ID: <20210125171444.167241-30-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20210125171444.167241-1-maxime.coquelin@redhat.com>
This patch implements a dedicated callback for
preparing and sending memory table to the backends.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
drivers/net/virtio/virtio_user/vhost.h | 1 +
drivers/net/virtio/virtio_user/vhost_kernel.c | 60 ++++++-------
drivers/net/virtio/virtio_user/vhost_user.c | 86 ++++++++++++++-----
drivers/net/virtio/virtio_user/vhost_vdpa.c | 8 +-
.../net/virtio/virtio_user/virtio_user_dev.c | 4 +-
5 files changed, 101 insertions(+), 58 deletions(-)
diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h
index d805526130..463801f563 100644
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -114,6 +114,7 @@ struct virtio_user_backend_ops {
int (*set_features)(struct virtio_user_dev *dev, uint64_t features);
int (*get_protocol_features)(struct virtio_user_dev *dev, uint64_t *features);
int (*set_protocol_features)(struct virtio_user_dev *dev, uint64_t features);
+ int (*set_memory_table)(struct virtio_user_dev *dev);
int (*send_request)(struct virtio_user_dev *dev,
enum vhost_user_request req,
void *arg);
diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c
index e46039e649..69f932bede 100644
--- a/drivers/net/virtio/virtio_user/vhost_kernel.c
+++ b/drivers/net/virtio/virtio_user/vhost_kernel.c
@@ -148,17 +148,6 @@ vhost_kernel_set_features(struct virtio_user_dev *dev, uint64_t features)
return vhost_kernel_ioctl(dev->vhostfds[0], VHOST_SET_FEATURES, &features);
}
-static uint64_t vhost_req_user_to_kernel[] = {
- [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER,
- [VHOST_USER_SET_VRING_CALL] = VHOST_SET_VRING_CALL,
- [VHOST_USER_SET_VRING_NUM] = VHOST_SET_VRING_NUM,
- [VHOST_USER_SET_VRING_BASE] = VHOST_SET_VRING_BASE,
- [VHOST_USER_GET_VRING_BASE] = VHOST_GET_VRING_BASE,
- [VHOST_USER_SET_VRING_ADDR] = VHOST_SET_VRING_ADDR,
- [VHOST_USER_SET_VRING_KICK] = VHOST_SET_VRING_KICK,
- [VHOST_USER_SET_MEM_TABLE] = VHOST_SET_MEM_TABLE,
-};
-
static int
add_memseg_list(const struct rte_memseg_list *msl, void *arg)
{
@@ -193,16 +182,17 @@ add_memseg_list(const struct rte_memseg_list *msl, void *arg)
* have much more memory regions. Below function will treat each
* contiguous memory space reserved by DPDK as one region.
*/
-static struct vhost_memory_kernel *
-prepare_vhost_memory_kernel(void)
+static int
+vhost_kernel_set_memory_table(struct virtio_user_dev *dev)
{
struct vhost_memory_kernel *vm;
+ int ret;
vm = malloc(sizeof(struct vhost_memory_kernel) +
max_regions *
sizeof(struct vhost_memory_region));
if (!vm)
- return NULL;
+ goto err;
vm->nregions = 0;
vm->padding = 0;
@@ -211,14 +201,34 @@ prepare_vhost_memory_kernel(void)
* The memory lock has already been taken by memory subsystem
* or virtio_user_start_device().
*/
- if (rte_memseg_list_walk_thread_unsafe(add_memseg_list, vm) < 0) {
- free(vm);
- return NULL;
- }
+ ret = rte_memseg_list_walk_thread_unsafe(add_memseg_list, vm);
+ if (ret < 0)
+ goto err_free;
+
+ ret = vhost_kernel_ioctl(dev->vhostfds[0], VHOST_SET_MEM_TABLE, vm);
+ if (ret < 0)
+ goto err_free;
- return vm;
+ free(vm);
+
+ return 0;
+err_free:
+ free(vm);
+err:
+ PMD_DRV_LOG(ERR, "Failed to set memory table");
+ return -1;
}
+static uint64_t vhost_req_user_to_kernel[] = {
+ [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER,
+ [VHOST_USER_SET_VRING_CALL] = VHOST_SET_VRING_CALL,
+ [VHOST_USER_SET_VRING_NUM] = VHOST_SET_VRING_NUM,
+ [VHOST_USER_SET_VRING_BASE] = VHOST_SET_VRING_BASE,
+ [VHOST_USER_GET_VRING_BASE] = VHOST_GET_VRING_BASE,
+ [VHOST_USER_SET_VRING_ADDR] = VHOST_SET_VRING_ADDR,
+ [VHOST_USER_SET_VRING_KICK] = VHOST_SET_VRING_KICK,
+};
+
static int
vhost_kernel_send_request(struct virtio_user_dev *dev,
enum vhost_user_request req,
@@ -227,7 +237,6 @@ vhost_kernel_send_request(struct virtio_user_dev *dev,
int ret = -1;
unsigned int i;
uint64_t req_kernel;
- struct vhost_memory_kernel *vm = NULL;
int vhostfd;
unsigned int queue_sel;
@@ -235,13 +244,6 @@ vhost_kernel_send_request(struct virtio_user_dev *dev,
req_kernel = vhost_req_user_to_kernel[req];
- if (req_kernel == VHOST_SET_MEM_TABLE) {
- vm = prepare_vhost_memory_kernel();
- if (!vm)
- return -1;
- arg = (void *)vm;
- }
-
switch (req_kernel) {
case VHOST_SET_VRING_NUM:
case VHOST_SET_VRING_ADDR:
@@ -271,9 +273,6 @@ vhost_kernel_send_request(struct virtio_user_dev *dev,
ret = ioctl(vhostfd, req_kernel, arg);
}
- if (vm)
- free(vm);
-
if (ret < 0)
PMD_DRV_LOG(ERR, "%s failed: %s",
vhost_msg_strings[req], strerror(errno));
@@ -403,6 +402,7 @@ struct virtio_user_backend_ops virtio_ops_kernel = {
.set_owner = vhost_kernel_set_owner,
.get_features = vhost_kernel_get_features,
.set_features = vhost_kernel_set_features,
+ .set_memory_table = vhost_kernel_set_memory_table,
.send_request = vhost_kernel_send_request,
.enable_qp = vhost_kernel_enable_queue_pair
};
diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c
index 4877574f72..84765d5fdf 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c
@@ -81,6 +81,9 @@ vhost_user_write(int fd, struct vhost_user_msg *msg, int *fds, int fd_num)
r = sendmsg(fd, &msgh, 0);
} while (r < 0 && errno == EINTR);
+ if (r < 0)
+ PMD_DRV_LOG(ERR, "Failed to send msg: %s", strerror(errno));
+
return r;
}
@@ -125,6 +128,39 @@ vhost_user_read(int fd, struct vhost_user_msg *msg)
return -1;
}
+static int
+vhost_user_check_reply_ack(struct virtio_user_dev *dev, struct vhost_user_msg *msg)
+{
+ enum vhost_user_request req = msg->request;
+ int ret;
+
+ if (!(msg->flags & VHOST_USER_NEED_REPLY_MASK))
+ return 0;
+
+ ret = vhost_user_read(dev->vhostfd, msg);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Failed to read reply-ack");
+ return -1;
+ }
+
+ if (req != msg->request) {
+ PMD_DRV_LOG(ERR, "Unexpected reply-ack request type (%d)", msg->request);
+ return -1;
+ }
+
+ if (msg->size != sizeof(msg->payload.u64)) {
+ PMD_DRV_LOG(ERR, "Unexpected reply-ack payload size (%u)", msg->size);
+ return -1;
+ }
+
+ if (msg->payload.u64) {
+ PMD_DRV_LOG(ERR, "Slave replied NACK to request type (%d)", msg->request);
+ return -1;
+ }
+
+ return 0;
+}
+
static int
vhost_user_set_owner(struct virtio_user_dev *dev)
{
@@ -338,25 +374,47 @@ update_memory_region(const struct rte_memseg_list *msl __rte_unused,
}
static int
-prepare_vhost_memory_user(struct vhost_user_msg *msg, int fds[])
+vhost_user_set_memory_table(struct virtio_user_dev *dev)
{
struct walk_arg wa;
+ int fds[VHOST_MEMORY_MAX_NREGIONS];
+ int ret, fd_num;
+ struct vhost_user_msg msg = {
+ .request = VHOST_USER_SET_MEM_TABLE,
+ .flags = VHOST_USER_VERSION,
+ };
+
+ if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_REPLY_ACK))
+ msg.flags |= VHOST_USER_NEED_REPLY_MASK;
wa.region_nr = 0;
- wa.vm = &msg->payload.memory;
+ wa.vm = &msg.payload.memory;
wa.fds = fds;
/*
* The memory lock has already been taken by memory subsystem
* or virtio_user_start_device().
*/
- if (rte_memseg_walk_thread_unsafe(update_memory_region, &wa) < 0)
- return -1;
+ ret = rte_memseg_walk_thread_unsafe(update_memory_region, &wa);
+ if (ret < 0)
+ goto err;
- msg->payload.memory.nregions = wa.region_nr;
- msg->payload.memory.padding = 0;
+ fd_num = wa.region_nr;
+ msg.payload.memory.nregions = wa.region_nr;
+ msg.payload.memory.padding = 0;
- return 0;
+ msg.size = sizeof(msg.payload.memory.nregions);
+ msg.size += sizeof(msg.payload.memory.padding);
+ msg.size += fd_num * sizeof(struct vhost_memory_region);
+
+ ret = vhost_user_write(dev->vhostfd, &msg, fds, fd_num);
+ if (ret < 0)
+ goto err;
+
+ return vhost_user_check_reply_ack(dev, &msg);
+err:
+ PMD_DRV_LOG(ERR, "Failed to set memory table");
+ return -1;
}
static struct vhost_user_msg m;
@@ -369,7 +427,6 @@ const char * const vhost_msg_strings[] = {
[VHOST_USER_GET_VRING_BASE] = "VHOST_GET_VRING_BASE",
[VHOST_USER_SET_VRING_ADDR] = "VHOST_SET_VRING_ADDR",
[VHOST_USER_SET_VRING_KICK] = "VHOST_SET_VRING_KICK",
- [VHOST_USER_SET_MEM_TABLE] = "VHOST_SET_MEM_TABLE",
[VHOST_USER_SET_VRING_ENABLE] = "VHOST_SET_VRING_ENABLE",
[VHOST_USER_SET_STATUS] = "VHOST_SET_STATUS",
[VHOST_USER_GET_STATUS] = "VHOST_GET_STATUS",
@@ -434,18 +491,6 @@ vhost_user_sock(struct virtio_user_dev *dev,
case VHOST_USER_RESET_OWNER:
break;
- case VHOST_USER_SET_MEM_TABLE:
- if (prepare_vhost_memory_user(&msg, fds) < 0)
- return -1;
- fd_num = msg.payload.memory.nregions;
- msg.size = sizeof(m.payload.memory.nregions);
- msg.size += sizeof(m.payload.memory.padding);
- msg.size += fd_num * sizeof(struct vhost_memory_region);
-
- if (has_reply_ack)
- msg.flags |= VHOST_USER_NEED_REPLY_MASK;
- break;
-
case VHOST_USER_SET_LOG_FD:
fds[fd_num++] = *((int *)arg);
break;
@@ -644,6 +689,7 @@ struct virtio_user_backend_ops virtio_ops_user = {
.set_features = vhost_user_set_features,
.get_protocol_features = vhost_user_get_protocol_features,
.set_protocol_features = vhost_user_set_protocol_features,
+ .set_memory_table = vhost_user_set_memory_table,
.send_request = vhost_user_sock,
.enable_qp = vhost_user_enable_queue_pair
};
diff --git a/drivers/net/virtio/virtio_user/vhost_vdpa.c b/drivers/net/virtio/virtio_user/vhost_vdpa.c
index f627afbcfc..bd7daebf0c 100644
--- a/drivers/net/virtio/virtio_user/vhost_vdpa.c
+++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c
@@ -19,7 +19,6 @@
#define VHOST_SET_FEATURES _IOW(VHOST_VIRTIO, 0x00, __u64)
#define VHOST_SET_OWNER _IO(VHOST_VIRTIO, 0x01)
#define VHOST_RESET_OWNER _IO(VHOST_VIRTIO, 0x02)
-#define VHOST_SET_MEM_TABLE _IOW(VHOST_VIRTIO, 0x03, void *)
#define VHOST_SET_LOG_BASE _IOW(VHOST_VIRTIO, 0x04, __u64)
#define VHOST_SET_LOG_FD _IOW(VHOST_VIRTIO, 0x07, int)
#define VHOST_SET_VRING_NUM _IOW(VHOST_VIRTIO, 0x10, struct vhost_vring_state)
@@ -46,7 +45,6 @@ static uint64_t vhost_req_user_to_vdpa[] = {
[VHOST_USER_GET_VRING_BASE] = VHOST_GET_VRING_BASE,
[VHOST_USER_SET_VRING_ADDR] = VHOST_SET_VRING_ADDR,
[VHOST_USER_SET_VRING_KICK] = VHOST_SET_VRING_KICK,
- [VHOST_USER_SET_MEM_TABLE] = VHOST_SET_MEM_TABLE,
[VHOST_USER_SET_STATUS] = VHOST_VDPA_SET_STATUS,
[VHOST_USER_GET_STATUS] = VHOST_VDPA_GET_STATUS,
[VHOST_USER_SET_VRING_ENABLE] = VHOST_VDPA_SET_VRING_ENABLE,
@@ -319,7 +317,7 @@ vhost_vdpa_map(const struct rte_memseg_list *msl, const struct rte_memseg *ms,
}
static int
-vhost_vdpa_dma_map_all(struct virtio_user_dev *dev)
+vhost_vdpa_set_memory_table(struct virtio_user_dev *dev)
{
int ret;
@@ -376,9 +374,6 @@ vhost_vdpa_send_request(struct virtio_user_dev *dev,
req_vdpa = vhost_req_user_to_vdpa[req];
- if (req_vdpa == VHOST_SET_MEM_TABLE)
- return vhost_vdpa_dma_map_all(dev);
-
switch (req_vdpa) {
case VHOST_SET_VRING_NUM:
case VHOST_SET_VRING_ADDR:
@@ -461,6 +456,7 @@ struct virtio_user_backend_ops virtio_ops_vdpa = {
.set_features = vhost_vdpa_set_features,
.get_protocol_features = vhost_vdpa_get_backend_features,
.set_protocol_features = vhost_vdpa_set_backend_features,
+ .set_memory_table = vhost_vdpa_set_memory_table,
.send_request = vhost_vdpa_send_request,
.enable_qp = vhost_vdpa_enable_queue_pair,
.dma_map = vhost_vdpa_dma_map_batch,
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 45417bbc5d..cb8f8a872c 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -177,7 +177,7 @@ virtio_user_start_device(struct virtio_user_dev *dev)
goto error;
/* Step 2: share memory regions */
- ret = dev->ops->send_request(dev, VHOST_USER_SET_MEM_TABLE, NULL);
+ ret = dev->ops->set_memory_table(dev);
if (ret < 0)
goto error;
@@ -352,7 +352,7 @@ virtio_user_mem_event_cb(enum rte_mem_event type __rte_unused,
dev->ops->enable_qp(dev, i, 0);
/* Step 2: update memory regions */
- dev->ops->send_request(dev, VHOST_USER_SET_MEM_TABLE, NULL);
+ dev->ops->set_memory_table(dev);
/* Step 3: resume the active queues */
for (i = 0; i < dev->queue_pairs; i++)
--
2.29.2
next prev parent reply other threads:[~2021-01-25 17:20 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-25 17:14 [dpdk-dev] [PATCH v3 00/44] net/virtio: Virtio PMD rework Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 01/44] bus/vdev: add helper to get vdev from ethdev Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 02/44] bus/vdev: add driver IOVA VA mode requirement Maxime Coquelin
2021-01-26 9:23 ` Xia, Chenbo
2021-01-26 9:24 ` Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 03/44] net/virtio: fix getting old status on reconnect Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 04/44] net/virtio: introduce Virtio bus type Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 05/44] net/virtio: refactor virtio-user device Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 06/44] net/virtio: introduce PCI device metadata Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 07/44] net/virtio: move PCI device init in dedicated file Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 08/44] net/virtio: move PCI specific dev init to PCI ethdev init Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 09/44] net/virtio: move MSIX detection to PCI ethdev Maxime Coquelin
2021-01-26 5:53 ` Xia, Chenbo
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 10/44] net/virtio: force IOVA as VA mode for Virtio-user Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 11/44] net/virtio: store PCI type in Virtio device metadata Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 12/44] net/virtio: add callback for device closing Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 13/44] net/virtio: validate features at bus level Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 14/44] net/virtio: remove bus type enum Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 15/44] net/virtio: move PCI-specific fields to PCI device Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 16/44] net/virtio: pack virtio HW struct Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 17/44] net/virtio: move legacy IO to Virtio PCI Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 18/44] net/virtio: introduce generic virtio header Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 19/44] net/virtio: move features definition to generic header Maxime Coquelin
2021-01-26 5:55 ` Xia, Chenbo
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 20/44] net/virtio: move virtqueue defines in " Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 21/44] net/virtio: move config definitions to " Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 22/44] net/virtio: make interrupt handling more generic Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 23/44] net/virtio: move vring alignment to generic header Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 24/44] net/virtio: remove last PCI refs in non-PCI code Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 25/44] net/virtio: make Vhost-user request sender consistent Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 26/44] net/virtio: add Virtio-user ops to set owner Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 27/44] net/virtio: add Virtio-user features ops Maxime Coquelin
2021-01-26 5:58 ` Xia, Chenbo
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 28/44] net/virtio: add Virtio-user protocol " Maxime Coquelin
2021-01-26 6:09 ` Xia, Chenbo
2021-01-25 17:14 ` Maxime Coquelin [this message]
2021-01-26 6:09 ` [dpdk-dev] [PATCH v3 29/44] net/virtio: add Virtio-user memory tables ops Xia, Chenbo
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 30/44] net/virtio: add Virtio-user vring setting ops Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 31/44] net/virtio: add Virtio-user vring file ops Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 32/44] net/virtio: add Virtio-user vring address ops Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 33/44] net/virtio: add Virtio-user status ops Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 34/44] net/virtio: remove useless request ops Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 35/44] net/virtio: improve Virtio-user errors handling Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 36/44] net/virtio: move Vhost-user requests to Vhost-user backend Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 37/44] net/virtio: make server mode blocking Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 38/44] net/virtio: move protocol features to Vhost-user Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 39/44] net/virtio: introduce backend data Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 40/44] net/virtio: move Vhost-user specifics to its backend Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 41/44] net/virtio: move Vhost-kernel data " Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 42/44] net/virtio: move Vhost-vDPA " Maxime Coquelin
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 43/44] net/virtio: improve Vhost-user error logging Maxime Coquelin
2021-01-26 6:25 ` Xia, Chenbo
2021-01-25 17:14 ` [dpdk-dev] [PATCH v3 44/44] net/virtio: handle Virtio-user setup failure properly Maxime Coquelin
2021-01-26 6:36 ` Xia, Chenbo
2021-01-26 9:15 ` Maxime Coquelin
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