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authorLinus Torvalds <torvalds@linux-foundation.org>2022-02-24 11:15:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-02-24 11:15:10 -0800
commit73878e5eb1bd3c9656685ca60bc3a49d17311e0c (patch)
treef722d694464357d496338044c5236298f431b2a3
parent3a5f59b17f9dec448976626663a73841460d7ab4 (diff)
parentb2750f14007f0e1b36caf51058c161d2c93e63b6 (diff)
downloadlinux-73878e5eb1bd3c9656685ca60bc3a49d17311e0c.tar.bz2
Merge tag 'block-5.17-2022-02-24' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe: - NVMe pull request: - send H2CData PDUs based on MAXH2CDATA (Varun Prakash) - fix passthrough to namespaces with unsupported features (Christoph Hellwig) - Clear iocb->private at poll completion (Stefano) * tag 'block-5.17-2022-02-24' of git://git.kernel.dk/linux-block: nvme-tcp: send H2CData PDUs based on MAXH2CDATA nvme: also mark passthrough-only namespaces ready in nvme_update_ns_info nvme: don't return an error from nvme_configure_metadata block: clear iocb->private in blkdev_bio_end_io_async()
-rw-r--r--block/fops.c2
-rw-r--r--drivers/nvme/host/core.c19
-rw-r--r--drivers/nvme/host/tcp.c63
-rw-r--r--include/linux/nvme-tcp.h1
4 files changed, 60 insertions, 25 deletions
diff --git a/block/fops.c b/block/fops.c
index 4f59e0f5bf30..a18e7fbd97b8 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -289,6 +289,8 @@ static void blkdev_bio_end_io_async(struct bio *bio)
struct kiocb *iocb = dio->iocb;
ssize_t ret;
+ WRITE_ONCE(iocb->private, NULL);
+
if (likely(!bio->bi_status)) {
ret = dio->size;
iocb->ki_pos += ret;
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 469f23186159..fd4720d37cc0 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1723,7 +1723,7 @@ static int nvme_setup_streams_ns(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
return 0;
}
-static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
+static void nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
{
struct nvme_ctrl *ctrl = ns->ctrl;
@@ -1739,7 +1739,8 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
ns->features &= ~(NVME_NS_METADATA_SUPPORTED | NVME_NS_EXT_LBAS);
if (!ns->ms || !(ctrl->ops->flags & NVME_F_METADATA_SUPPORTED))
- return 0;
+ return;
+
if (ctrl->ops->flags & NVME_F_FABRICS) {
/*
* The NVMe over Fabrics specification only supports metadata as
@@ -1747,7 +1748,7 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
* remap the separate metadata buffer from the block layer.
*/
if (WARN_ON_ONCE(!(id->flbas & NVME_NS_FLBAS_META_EXT)))
- return -EINVAL;
+ return;
ns->features |= NVME_NS_EXT_LBAS;
@@ -1774,8 +1775,6 @@ static int nvme_configure_metadata(struct nvme_ns *ns, struct nvme_id_ns *id)
else
ns->features |= NVME_NS_METADATA_SUPPORTED;
}
-
- return 0;
}
static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
@@ -1916,9 +1915,7 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_id_ns *id)
ns->lba_shift = id->lbaf[lbaf].ds;
nvme_set_queue_limits(ns->ctrl, ns->queue);
- ret = nvme_configure_metadata(ns, id);
- if (ret)
- goto out_unfreeze;
+ nvme_configure_metadata(ns, id);
nvme_set_chunk_sectors(ns, id);
nvme_update_disk_info(ns->disk, ns, id);
@@ -1934,7 +1931,7 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_id_ns *id)
if (blk_queue_is_zoned(ns->queue)) {
ret = nvme_revalidate_zones(ns);
if (ret && !nvme_first_scan(ns->disk))
- goto out;
+ return ret;
}
if (nvme_ns_head_multipath(ns->head)) {
@@ -1949,16 +1946,16 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_id_ns *id)
return 0;
out_unfreeze:
- blk_mq_unfreeze_queue(ns->disk->queue);
-out:
/*
* If probing fails due an unsupported feature, hide the block device,
* but still allow other access.
*/
if (ret == -ENODEV) {
ns->disk->flags |= GENHD_FL_HIDDEN;
+ set_bit(NVME_NS_READY, &ns->flags);
ret = 0;
}
+ blk_mq_unfreeze_queue(ns->disk->queue);
return ret;
}
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 891a36d02e7c..65e00c64a588 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -44,6 +44,8 @@ struct nvme_tcp_request {
u32 data_len;
u32 pdu_len;
u32 pdu_sent;
+ u32 h2cdata_left;
+ u32 h2cdata_offset;
u16 ttag;
__le16 status;
struct list_head entry;
@@ -95,6 +97,7 @@ struct nvme_tcp_queue {
struct nvme_tcp_request *request;
int queue_size;
+ u32 maxh2cdata;
size_t cmnd_capsule_len;
struct nvme_tcp_ctrl *ctrl;
unsigned long flags;
@@ -572,23 +575,26 @@ static int nvme_tcp_handle_comp(struct nvme_tcp_queue *queue,
return ret;
}
-static void nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req,
- struct nvme_tcp_r2t_pdu *pdu)
+static void nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req)
{
struct nvme_tcp_data_pdu *data = req->pdu;
struct nvme_tcp_queue *queue = req->queue;
struct request *rq = blk_mq_rq_from_pdu(req);
+ u32 h2cdata_sent = req->pdu_len;
u8 hdgst = nvme_tcp_hdgst_len(queue);
u8 ddgst = nvme_tcp_ddgst_len(queue);
req->state = NVME_TCP_SEND_H2C_PDU;
req->offset = 0;
- req->pdu_len = le32_to_cpu(pdu->r2t_length);
+ req->pdu_len = min(req->h2cdata_left, queue->maxh2cdata);
req->pdu_sent = 0;
+ req->h2cdata_left -= req->pdu_len;
+ req->h2cdata_offset += h2cdata_sent;
memset(data, 0, sizeof(*data));
data->hdr.type = nvme_tcp_h2c_data;
- data->hdr.flags = NVME_TCP_F_DATA_LAST;
+ if (!req->h2cdata_left)
+ data->hdr.flags = NVME_TCP_F_DATA_LAST;
if (queue->hdr_digest)
data->hdr.flags |= NVME_TCP_F_HDGST;
if (queue->data_digest)
@@ -597,9 +603,9 @@ static void nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req,
data->hdr.pdo = data->hdr.hlen + hdgst;
data->hdr.plen =
cpu_to_le32(data->hdr.hlen + hdgst + req->pdu_len + ddgst);
- data->ttag = pdu->ttag;
+ data->ttag = req->ttag;
data->command_id = nvme_cid(rq);
- data->data_offset = pdu->r2t_offset;
+ data->data_offset = cpu_to_le32(req->h2cdata_offset);
data->data_length = cpu_to_le32(req->pdu_len);
}
@@ -609,6 +615,7 @@ static int nvme_tcp_handle_r2t(struct nvme_tcp_queue *queue,
struct nvme_tcp_request *req;
struct request *rq;
u32 r2t_length = le32_to_cpu(pdu->r2t_length);
+ u32 r2t_offset = le32_to_cpu(pdu->r2t_offset);
rq = nvme_find_rq(nvme_tcp_tagset(queue), pdu->command_id);
if (!rq) {
@@ -633,14 +640,19 @@ static int nvme_tcp_handle_r2t(struct nvme_tcp_queue *queue,
return -EPROTO;
}
- if (unlikely(le32_to_cpu(pdu->r2t_offset) < req->data_sent)) {
+ if (unlikely(r2t_offset < req->data_sent)) {
dev_err(queue->ctrl->ctrl.device,
"req %d unexpected r2t offset %u (expected %zu)\n",
- rq->tag, le32_to_cpu(pdu->r2t_offset), req->data_sent);
+ rq->tag, r2t_offset, req->data_sent);
return -EPROTO;
}
- nvme_tcp_setup_h2c_data_pdu(req, pdu);
+ req->pdu_len = 0;
+ req->h2cdata_left = r2t_length;
+ req->h2cdata_offset = r2t_offset;
+ req->ttag = pdu->ttag;
+
+ nvme_tcp_setup_h2c_data_pdu(req);
nvme_tcp_queue_request(req, false, true);
return 0;
@@ -928,6 +940,7 @@ static int nvme_tcp_try_send_data(struct nvme_tcp_request *req)
{
struct nvme_tcp_queue *queue = req->queue;
int req_data_len = req->data_len;
+ u32 h2cdata_left = req->h2cdata_left;
while (true) {
struct page *page = nvme_tcp_req_cur_page(req);
@@ -972,7 +985,10 @@ static int nvme_tcp_try_send_data(struct nvme_tcp_request *req)
req->state = NVME_TCP_SEND_DDGST;
req->offset = 0;
} else {
- nvme_tcp_done_send_req(queue);
+ if (h2cdata_left)
+ nvme_tcp_setup_h2c_data_pdu(req);
+ else
+ nvme_tcp_done_send_req(queue);
}
return 1;
}
@@ -1030,9 +1046,14 @@ static int nvme_tcp_try_send_data_pdu(struct nvme_tcp_request *req)
if (queue->hdr_digest && !req->offset)
nvme_tcp_hdgst(queue->snd_hash, pdu, sizeof(*pdu));
- ret = kernel_sendpage(queue->sock, virt_to_page(pdu),
- offset_in_page(pdu) + req->offset, len,
- MSG_DONTWAIT | MSG_MORE | MSG_SENDPAGE_NOTLAST);
+ if (!req->h2cdata_left)
+ ret = kernel_sendpage(queue->sock, virt_to_page(pdu),
+ offset_in_page(pdu) + req->offset, len,
+ MSG_DONTWAIT | MSG_MORE | MSG_SENDPAGE_NOTLAST);
+ else
+ ret = sock_no_sendpage(queue->sock, virt_to_page(pdu),
+ offset_in_page(pdu) + req->offset, len,
+ MSG_DONTWAIT | MSG_MORE);
if (unlikely(ret <= 0))
return ret;
@@ -1052,6 +1073,7 @@ static int nvme_tcp_try_send_ddgst(struct nvme_tcp_request *req)
{
struct nvme_tcp_queue *queue = req->queue;
size_t offset = req->offset;
+ u32 h2cdata_left = req->h2cdata_left;
int ret;
struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
struct kvec iov = {
@@ -1069,7 +1091,10 @@ static int nvme_tcp_try_send_ddgst(struct nvme_tcp_request *req)
return ret;
if (offset + ret == NVME_TCP_DIGEST_LENGTH) {
- nvme_tcp_done_send_req(queue);
+ if (h2cdata_left)
+ nvme_tcp_setup_h2c_data_pdu(req);
+ else
+ nvme_tcp_done_send_req(queue);
return 1;
}
@@ -1261,6 +1286,7 @@ static int nvme_tcp_init_connection(struct nvme_tcp_queue *queue)
struct msghdr msg = {};
struct kvec iov;
bool ctrl_hdgst, ctrl_ddgst;
+ u32 maxh2cdata;
int ret;
icreq = kzalloc(sizeof(*icreq), GFP_KERNEL);
@@ -1344,6 +1370,14 @@ static int nvme_tcp_init_connection(struct nvme_tcp_queue *queue)
goto free_icresp;
}
+ maxh2cdata = le32_to_cpu(icresp->maxdata);
+ if ((maxh2cdata % 4) || (maxh2cdata < NVME_TCP_MIN_MAXH2CDATA)) {
+ pr_err("queue %d: invalid maxh2cdata returned %u\n",
+ nvme_tcp_queue_id(queue), maxh2cdata);
+ goto free_icresp;
+ }
+ queue->maxh2cdata = maxh2cdata;
+
ret = 0;
free_icresp:
kfree(icresp);
@@ -2329,6 +2363,7 @@ static blk_status_t nvme_tcp_setup_cmd_pdu(struct nvme_ns *ns,
req->data_sent = 0;
req->pdu_len = 0;
req->pdu_sent = 0;
+ req->h2cdata_left = 0;
req->data_len = blk_rq_nr_phys_segments(rq) ?
blk_rq_payload_bytes(rq) : 0;
req->curr_bio = rq->bio;
diff --git a/include/linux/nvme-tcp.h b/include/linux/nvme-tcp.h
index 959e0bd9a913..75470159a194 100644
--- a/include/linux/nvme-tcp.h
+++ b/include/linux/nvme-tcp.h
@@ -12,6 +12,7 @@
#define NVME_TCP_DISC_PORT 8009
#define NVME_TCP_ADMIN_CCSZ SZ_8K
#define NVME_TCP_DIGEST_LENGTH 4
+#define NVME_TCP_MIN_MAXH2CDATA 4096
enum nvme_tcp_pfv {
NVME_TCP_PFV_1_0 = 0x0,