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Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Browse Source 
Pull block fixes from Jens Axboe:
 "A small collection of fixes that should go into this series. This
  contains:

   - NVMe pull request from Christoph, with various fixes for nvme
     proper and nvme-fc.

   - disable runtime PM for blk-mq for now.

     With scsi now defaulting to using blk-mq, this reared its head as
     an issue. Longer term we'll fix up runtime PM for blk-mq, for now
     just disable it to prevent a hang on laptop resume for some folks.

   - blk-mq CPU <-> hw queue map fix from Christoph.

   - xen/blkfront pull request from Konrad, with two small fixes for the
     blkfront driver.

   - a few fixups for nbd from Joseph.

   - a stable fix for pblk from Javier"

* 'for-linus' of git://git.kernel.dk/linux-block:
  lightnvm: pblk: advance bio according to lba index
  nvme: validate admin queue before unquiesce
  nbd: clear disconnected on reconnect
  nvme-pci: fix HMB size calculation
  nvme-fc: revise TRADDR parsing
  nvme-fc: address target disconnect race conditions in fcp io submit
  nvme: fabrics commands should use the fctype field for data direction
  nvme: also provide a UUID in the WWID sysfs attribute
  xen/blkfront: always allocate grants first from per-queue persistent grants
  xen-blkfront: fix mq start/stop race
  blk-mq: map queues to all present CPUs
  block: disable runtime-pm for blk-mq
  xen-blkfront: Fix handling of non-supported operations
  nbd: only set sndtimeo if we have a timeout set
  nbd: take tx_lock before disconnecting
  nbd: allow multiple disconnects to be sent
This commit is contained in:
Linus Torvalds 2017-07-28 12:13:34 -07:00
commit 0fa8dc423c
13 changed files with 197 additions and 138 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
block/blk-core.c
View File

@ -3421,6 +3421,10 @@ EXPORT_SYMBOL(blk_finish_plug);
*/
void blk_pm_runtime_init(struct request_queue *q, struct device *dev)
{
/* not support for RQF_PM and ->rpm_status in blk-mq yet */
if (q->mq_ops)
return;
q->dev = dev;
q->rpm_status = RPM_ACTIVE;
pm_runtime_set_autosuspend_delay(q->dev, -1);

4
block/blk-mq-cpumap.c
View File

@ -17,9 +17,9 @@
static int cpu_to_queue_index(unsigned int nr_queues, const int cpu)
{
/*
* Non online CPU will be mapped to queue index 0.
* Non present CPU will be mapped to queue index 0.
*/
if (!cpu_online(cpu))
if (!cpu_present(cpu))
return 0;
return cpu % nr_queues;
}

18
drivers/block/nbd.c
View File

@ -908,7 +908,8 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
continue;
}
sk_set_memalloc(sock->sk);
sock->sk->sk_sndtimeo = nbd->tag_set.timeout;
if (nbd->tag_set.timeout)
sock->sk->sk_sndtimeo = nbd->tag_set.timeout;
atomic_inc(&config->recv_threads);
refcount_inc(&nbd->config_refs);
old = nsock->sock;
@ -922,6 +923,8 @@ static int nbd_reconnect_socket(struct nbd_device *nbd, unsigned long arg)
mutex_unlock(&nsock->tx_lock);
sockfd_put(old);
clear_bit(NBD_DISCONNECTED, &config->runtime_flags);
/* We take the tx_mutex in an error path in the recv_work, so we
* need to queue_work outside of the tx_mutex.
*/
@ -978,11 +981,15 @@ static void send_disconnects(struct nbd_device *nbd)
int i, ret;
for (i = 0; i < config->num_connections; i++) {
struct nbd_sock *nsock = config->socks[i];
iov_iter_kvec(&from, WRITE | ITER_KVEC, &iov, 1, sizeof(request));
mutex_lock(&nsock->tx_lock);
ret = sock_xmit(nbd, i, 1, &from, 0, NULL);
if (ret <= 0)
dev_err(disk_to_dev(nbd->disk),
"Send disconnect failed %d\n", ret);
mutex_unlock(&nsock->tx_lock);
}
}
@ -991,9 +998,8 @@ static int nbd_disconnect(struct nbd_device *nbd)
struct nbd_config *config = nbd->config;
dev_info(disk_to_dev(nbd->disk), "NBD_DISCONNECT\n");
if (!test_and_set_bit(NBD_DISCONNECT_REQUESTED,
&config->runtime_flags))
send_disconnects(nbd);
set_bit(NBD_DISCONNECT_REQUESTED, &config->runtime_flags);
send_disconnects(nbd);
return 0;
}
@ -1074,7 +1080,9 @@ static int nbd_start_device(struct nbd_device *nbd)
return -ENOMEM;
}
sk_set_memalloc(config->socks[i]->sock->sk);
config->socks[i]->sock->sk->sk_sndtimeo = nbd->tag_set.timeout;
if (nbd->tag_set.timeout)
config->socks[i]->sock->sk->sk_sndtimeo =
nbd->tag_set.timeout;
atomic_inc(&config->recv_threads);
refcount_inc(&nbd->config_refs);
INIT_WORK(&args->work, recv_work);

25
drivers/block/xen-blkfront.c
View File

@ -111,7 +111,7 @@ struct blk_shadow {
};
struct blkif_req {
int error;
blk_status_t error;
};
static inline struct blkif_req *blkif_req(struct request *rq)
@ -708,6 +708,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
* existing persistent grants, or if we have to get new grants,
* as there are not sufficiently many free.
*/
bool new_persistent_gnts = false;
struct scatterlist *sg;
int num_sg, max_grefs, num_grant;
@ -719,19 +720,21 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
*/
max_grefs += INDIRECT_GREFS(max_grefs);
/*
* We have to reserve 'max_grefs' grants because persistent
* grants are shared by all rings.
*/
if (max_grefs > 0)
if (gnttab_alloc_grant_references(max_grefs, &setup.gref_head) < 0) {
/* Check if we have enough persistent grants to allocate a requests */
if (rinfo->persistent_gnts_c < max_grefs) {
new_persistent_gnts = true;
if (gnttab_alloc_grant_references(
max_grefs - rinfo->persistent_gnts_c,
&setup.gref_head) < 0) {
gnttab_request_free_callback(
&rinfo->callback,
blkif_restart_queue_callback,
rinfo,
max_grefs);
max_grefs - rinfo->persistent_gnts_c);
return 1;
}
}
/* Fill out a communications ring structure. */
id = blkif_ring_get_request(rinfo, req, &ring_req);
@ -832,7 +835,7 @@ static int blkif_queue_rw_req(struct request *req, struct blkfront_ring_info *ri
if (unlikely(require_extra_req))
rinfo->shadow[extra_id].req = *extra_ring_req;
if (max_grefs > 0)
if (new_persistent_gnts)
gnttab_free_grant_references(setup.gref_head);
return 0;
@ -906,8 +909,8 @@ static blk_status_t blkif_queue_rq(struct blk_mq_hw_ctx *hctx,
return BLK_STS_IOERR;
out_busy:
spin_unlock_irqrestore(&rinfo->ring_lock, flags);
blk_mq_stop_hw_queue(hctx);
spin_unlock_irqrestore(&rinfo->ring_lock, flags);
return BLK_STS_RESOURCE;
}
@ -1616,7 +1619,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
if (unlikely(bret->status == BLKIF_RSP_EOPNOTSUPP)) {
printk(KERN_WARNING "blkfront: %s: %s op failed\n",
info->gd->disk_name, op_name(bret->operation));
blkif_req(req)->error = -EOPNOTSUPP;
blkif_req(req)->error = BLK_STS_NOTSUPP;
}
if (unlikely(bret->status == BLKIF_RSP_ERROR &&
rinfo->shadow[id].req.u.rw.nr_segments == 0)) {

4
drivers/lightnvm/pblk-rb.c
View File

@ -657,7 +657,7 @@ unsigned int pblk_rb_read_to_bio(struct pblk_rb *rb, struct nvm_rq *rqd,
* be directed to disk.
*/
int pblk_rb_copy_to_bio(struct pblk_rb *rb, struct bio *bio, sector_t lba,
struct ppa_addr ppa, int bio_iter)
struct ppa_addr ppa, int bio_iter, bool advanced_bio)
{
struct pblk *pblk = container_of(rb, struct pblk, rwb);
struct pblk_rb_entry *entry;
@ -694,7 +694,7 @@ int pblk_rb_copy_to_bio(struct pblk_rb *rb, struct bio *bio, sector_t lba,
* filled with data from the cache). If part of the data resides on the
* media, we will read later on
*/
if (unlikely(!bio->bi_iter.bi_idx))
if (unlikely(!advanced_bio))
bio_advance(bio, bio_iter * PBLK_EXPOSED_PAGE_SIZE);
data = bio_data(bio);

23
drivers/lightnvm/pblk-read.c
View File

@ -26,7 +26,7 @@
*/
static int pblk_read_from_cache(struct pblk *pblk, struct bio *bio,
sector_t lba, struct ppa_addr ppa,
int bio_iter)
int bio_iter, bool advanced_bio)
{
#ifdef CONFIG_NVM_DEBUG
/* Callers must ensure that the ppa points to a cache address */
@ -34,7 +34,8 @@ static int pblk_read_from_cache(struct pblk *pblk, struct bio *bio,
BUG_ON(!pblk_addr_in_cache(ppa));
#endif
return pblk_rb_copy_to_bio(&pblk->rwb, bio, lba, ppa, bio_iter);
return pblk_rb_copy_to_bio(&pblk->rwb, bio, lba, ppa,
bio_iter, advanced_bio);
}
static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
@ -44,7 +45,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
struct ppa_addr ppas[PBLK_MAX_REQ_ADDRS];
sector_t blba = pblk_get_lba(bio);
int nr_secs = rqd->nr_ppas;
int advanced_bio = 0;
bool advanced_bio = false;
int i, j = 0;
/* logic error: lba out-of-bounds. Ignore read request */
@ -62,19 +63,26 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
retry:
if (pblk_ppa_empty(p)) {
WARN_ON(test_and_set_bit(i, read_bitmap));
continue;
if (unlikely(!advanced_bio)) {
bio_advance(bio, (i) * PBLK_EXPOSED_PAGE_SIZE);
advanced_bio = true;
}
goto next;
}
/* Try to read from write buffer. The address is later checked
* on the write buffer to prevent retrieving overwritten data.
*/
if (pblk_addr_in_cache(p)) {
if (!pblk_read_from_cache(pblk, bio, lba, p, i)) {
if (!pblk_read_from_cache(pblk, bio, lba, p, i,
advanced_bio)) {
pblk_lookup_l2p_seq(pblk, &p, lba, 1);
goto retry;
}
WARN_ON(test_and_set_bit(i, read_bitmap));
advanced_bio = 1;
advanced_bio = true;
#ifdef CONFIG_NVM_DEBUG
atomic_long_inc(&pblk->cache_reads);
#endif
@ -83,6 +91,7 @@ static void pblk_read_ppalist_rq(struct pblk *pblk, struct nvm_rq *rqd,
rqd->ppa_list[j++] = p;
}
next:
if (advanced_bio)
bio_advance(bio, PBLK_EXPOSED_PAGE_SIZE);
}
@ -282,7 +291,7 @@ static void pblk_read_rq(struct pblk *pblk, struct nvm_rq *rqd,
* write buffer to prevent retrieving overwritten data.
*/
if (pblk_addr_in_cache(ppa)) {
if (!pblk_read_from_cache(pblk, bio, lba, ppa, 0)) {
if (!pblk_read_from_cache(pblk, bio, lba, ppa, 0, 1)) {
pblk_lookup_l2p_seq(pblk, &ppa, lba, 1);
goto retry;
}

2
drivers/lightnvm/pblk.h
View File

@ -670,7 +670,7 @@ unsigned int pblk_rb_read_to_bio_list(struct pblk_rb *rb, struct bio *bio,
struct list_head *list,
unsigned int max);
int pblk_rb_copy_to_bio(struct pblk_rb *rb, struct bio *bio, sector_t lba,
struct ppa_addr ppa, int bio_iter);
struct ppa_addr ppa, int bio_iter, bool advanced_bio);
unsigned int pblk_rb_read_commit(struct pblk_rb *rb, unsigned int entries);
unsigned int pblk_rb_sync_init(struct pblk_rb *rb, unsigned long *flags);

6
drivers/nvme/host/core.c
View File

@ -1995,6 +1995,9 @@ static ssize_t wwid_show(struct device *dev, struct device_attribute *attr,
int serial_len = sizeof(ctrl->serial);
int model_len = sizeof(ctrl->model);
if (!uuid_is_null(&ns->uuid))
return sprintf(buf, "uuid.%pU\n", &ns->uuid);
if (memchr_inv(ns->nguid, 0, sizeof(ns->nguid)))
return sprintf(buf, "eui.%16phN\n", ns->nguid);
@ -2709,7 +2712,8 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
mutex_lock(&ctrl->namespaces_mutex);
/* Forcibly unquiesce queues to avoid blocking dispatch */
blk_mq_unquiesce_queue(ctrl->admin_q);
if (ctrl->admin_q)
blk_mq_unquiesce_queue(ctrl->admin_q);
list_for_each_entry(ns, &ctrl->namespaces, list) {
/*

121
drivers/nvme/host/fc.c
View File

@ -1888,7 +1888,7 @@ nvme_fc_start_fcp_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue,
* the target device is present
*/
if (ctrl->rport->remoteport.port_state != FC_OBJSTATE_ONLINE)
return BLK_STS_IOERR;
goto busy;
if (!nvme_fc_ctrl_get(ctrl))
return BLK_STS_IOERR;
@ -1958,22 +1958,25 @@ nvme_fc_start_fcp_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_queue *queue,
queue->lldd_handle, &op->fcp_req);
if (ret) {
if (op->rq) /* normal request */
if (!(op->flags & FCOP_FLAGS_AEN))
nvme_fc_unmap_data(ctrl, op->rq, op);
/* else - aen. no cleanup needed */
nvme_fc_ctrl_put(ctrl);
if (ret != -EBUSY)
if (ctrl->rport->remoteport.port_state == FC_OBJSTATE_ONLINE &&
ret != -EBUSY)
return BLK_STS_IOERR;
if (op->rq)
blk_mq_delay_run_hw_queue(queue->hctx, NVMEFC_QUEUE_DELAY);
return BLK_STS_RESOURCE;
goto busy;
}
return BLK_STS_OK;
busy:
if (!(op->flags & FCOP_FLAGS_AEN) && queue->hctx)
blk_mq_delay_run_hw_queue(queue->hctx, NVMEFC_QUEUE_DELAY);
return BLK_STS_RESOURCE;
}
static blk_status_t
@ -2802,66 +2805,70 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
return ERR_PTR(ret);
}
enum {
FCT_TRADDR_ERR = 0,
FCT_TRADDR_WWNN = 1 << 0,
FCT_TRADDR_WWPN = 1 << 1,
};
struct nvmet_fc_traddr {
u64 nn;
u64 pn;
};
static const match_table_t traddr_opt_tokens = {
{ FCT_TRADDR_WWNN, "nn-%s" },
{ FCT_TRADDR_WWPN, "pn-%s" },
{ FCT_TRADDR_ERR, NULL }
};
static int
nvme_fc_parse_address(struct nvmet_fc_traddr *traddr, char *buf)
__nvme_fc_parse_u64(substring_t *sstr, u64 *val)
{
substring_t args[MAX_OPT_ARGS];
char *options, *o, *p;
int token, ret = 0;
u64 token64;
options = o = kstrdup(buf, GFP_KERNEL);
if (!options)
return -ENOMEM;
if (match_u64(sstr, &token64))
return -EINVAL;
*val = token64;
while ((p = strsep(&o, ":\n")) != NULL) {
if (!*p)
continue;
return 0;
}
token = match_token(p, traddr_opt_tokens, args);
switch (token) {
case FCT_TRADDR_WWNN:
if (match_u64(args, &token64)) {
ret = -EINVAL;
goto out;
}
traddr->nn = token64;
break;
case FCT_TRADDR_WWPN:
if (match_u64(args, &token64)) {
ret = -EINVAL;
goto out;
}
traddr->pn = token64;
break;
default:
pr_warn("unknown traddr token or missing value '%s'\n",
p);
ret = -EINVAL;
goto out;
}
}
/*
* This routine validates and extracts the WWN's from the TRADDR string.
* As kernel parsers need the 0x to determine number base, universally
* build string to parse with 0x prefix before parsing name strings.
*/
static int
nvme_fc_parse_traddr(struct nvmet_fc_traddr *traddr, char *buf, size_t blen)
{
char name[2 + NVME_FC_TRADDR_HEXNAMELEN + 1];
substring_t wwn = { name, &name[sizeof(name)-1] };
int nnoffset, pnoffset;
out:
kfree(options);
return ret;
/* validate it string one of the 2 allowed formats */
if (strnlen(buf, blen) == NVME_FC_TRADDR_MAXLENGTH &&
!strncmp(buf, "nn-0x", NVME_FC_TRADDR_OXNNLEN) &&
!strncmp(&buf[NVME_FC_TRADDR_MAX_PN_OFFSET],
"pn-0x", NVME_FC_TRADDR_OXNNLEN)) {
nnoffset = NVME_FC_TRADDR_OXNNLEN;
pnoffset = NVME_FC_TRADDR_MAX_PN_OFFSET +
NVME_FC_TRADDR_OXNNLEN;
} else if ((strnlen(buf, blen) == NVME_FC_TRADDR_MINLENGTH &&
!strncmp(buf, "nn-", NVME_FC_TRADDR_NNLEN) &&
!strncmp(&buf[NVME_FC_TRADDR_MIN_PN_OFFSET],
"pn-", NVME_FC_TRADDR_NNLEN))) {
nnoffset = NVME_FC_TRADDR_NNLEN;
pnoffset = NVME_FC_TRADDR_MIN_PN_OFFSET + NVME_FC_TRADDR_NNLEN;
} else
goto out_einval;
name[0] = '0';
name[1] = 'x';
name[2 + NVME_FC_TRADDR_HEXNAMELEN] = 0;
memcpy(&name[2], &buf[nnoffset], NVME_FC_TRADDR_HEXNAMELEN);
if (__nvme_fc_parse_u64(&wwn, &traddr->nn))
goto out_einval;
memcpy(&name[2], &buf[pnoffset], NVME_FC_TRADDR_HEXNAMELEN);
if (__nvme_fc_parse_u64(&wwn, &traddr->pn))
goto out_einval;
return 0;
out_einval:
pr_warn("%s: bad traddr string\n", __func__);
return -EINVAL;
}
static struct nvme_ctrl *
@ -2875,11 +2882,11 @@ nvme_fc_create_ctrl(struct device *dev, struct nvmf_ctrl_options *opts)
unsigned long flags;
int ret;
ret = nvme_fc_parse_address(&raddr, opts->traddr);
ret = nvme_fc_parse_traddr(&raddr, opts->traddr, NVMF_TRADDR_SIZE);
if (ret || !raddr.nn || !raddr.pn)
return ERR_PTR(-EINVAL);
ret = nvme_fc_parse_address(&laddr, opts->host_traddr);
ret = nvme_fc_parse_traddr(&laddr, opts->host_traddr, NVMF_TRADDR_SIZE);
if (ret || !laddr.nn || !laddr.pn)
return ERR_PTR(-EINVAL);

6
drivers/nvme/host/pci.c
View File

@ -1619,7 +1619,7 @@ static void nvme_free_host_mem(struct nvme_dev *dev)
static int nvme_alloc_host_mem(struct nvme_dev *dev, u64 min, u64 preferred)
{
struct nvme_host_mem_buf_desc *descs;
u32 chunk_size, max_entries;
u32 chunk_size, max_entries, len;
int i = 0;
void **bufs;
u64 size = 0, tmp;
@ -1638,10 +1638,10 @@ static int nvme_alloc_host_mem(struct nvme_dev *dev, u64 min, u64 preferred)
if (!bufs)
goto out_free_descs;
for (size = 0; size < preferred; size += chunk_size) {
u32 len = min_t(u64, chunk_size, preferred - size);
for (size = 0; size < preferred; size += len) {
dma_addr_t dma_addr;
len = min_t(u64, chunk_size, preferred - size);
bufs[i] = dma_alloc_attrs(dev->dev, len, &dma_addr, GFP_KERNEL,
DMA_ATTR_NO_KERNEL_MAPPING | DMA_ATTR_NO_WARN);
if (!bufs[i])

101
drivers/nvme/target/fc.c
View File

@ -2293,66 +2293,70 @@ nvmet_fc_rcv_fcp_abort(struct nvmet_fc_target_port *target_port,
}
EXPORT_SYMBOL_GPL(nvmet_fc_rcv_fcp_abort);
enum {
FCT_TRADDR_ERR = 0,
FCT_TRADDR_WWNN = 1 << 0,
FCT_TRADDR_WWPN = 1 << 1,
};
struct nvmet_fc_traddr {
u64 nn;
u64 pn;
};
static const match_table_t traddr_opt_tokens = {
{ FCT_TRADDR_WWNN, "nn-%s" },
{ FCT_TRADDR_WWPN, "pn-%s" },
{ FCT_TRADDR_ERR, NULL }
};
static int
nvmet_fc_parse_traddr(struct nvmet_fc_traddr *traddr, char *buf)
__nvme_fc_parse_u64(substring_t *sstr, u64 *val)
{
substring_t args[MAX_OPT_ARGS];
char *options, *o, *p;
int token, ret = 0;
u64 token64;
options = o = kstrdup(buf, GFP_KERNEL);
if (!options)
return -ENOMEM;
if (match_u64(sstr, &token64))
return -EINVAL;
*val = token64;
while ((p = strsep(&o, ":\n")) != NULL) {
if (!*p)
continue;
return 0;
}
token = match_token(p, traddr_opt_tokens, args);
switch (token) {
case FCT_TRADDR_WWNN:
if (match_u64(args, &token64)) {
ret = -EINVAL;
goto out;
}
traddr->nn = token64;
break;
case FCT_TRADDR_WWPN:
if (match_u64(args, &token64)) {
ret = -EINVAL;
goto out;
}
traddr->pn = token64;
break;
default:
pr_warn("unknown traddr token or missing value '%s'\n",
p);
ret = -EINVAL;
goto out;
}
}
/*
* This routine validates and extracts the WWN's from the TRADDR string.
* As kernel parsers need the 0x to determine number base, universally
* build string to parse with 0x prefix before parsing name strings.
*/
static int
nvme_fc_parse_traddr(struct nvmet_fc_traddr *traddr, char *buf, size_t blen)
{
char name[2 + NVME_FC_TRADDR_HEXNAMELEN + 1];
substring_t wwn = { name, &name[sizeof(name)-1] };
int nnoffset, pnoffset;
out:
kfree(options);
return ret;
/* validate it string one of the 2 allowed formats */
if (strnlen(buf, blen) == NVME_FC_TRADDR_MAXLENGTH &&
!strncmp(buf, "nn-0x", NVME_FC_TRADDR_OXNNLEN) &&
!strncmp(&buf[NVME_FC_TRADDR_MAX_PN_OFFSET],
"pn-0x", NVME_FC_TRADDR_OXNNLEN)) {
nnoffset = NVME_FC_TRADDR_OXNNLEN;
pnoffset = NVME_FC_TRADDR_MAX_PN_OFFSET +
NVME_FC_TRADDR_OXNNLEN;
} else if ((strnlen(buf, blen) == NVME_FC_TRADDR_MINLENGTH &&
!strncmp(buf, "nn-", NVME_FC_TRADDR_NNLEN) &&
!strncmp(&buf[NVME_FC_TRADDR_MIN_PN_OFFSET],
"pn-", NVME_FC_TRADDR_NNLEN))) {
nnoffset = NVME_FC_TRADDR_NNLEN;
pnoffset = NVME_FC_TRADDR_MIN_PN_OFFSET + NVME_FC_TRADDR_NNLEN;
} else
goto out_einval;
name[0] = '0';
name[1] = 'x';
name[2 + NVME_FC_TRADDR_HEXNAMELEN] = 0;
memcpy(&name[2], &buf[nnoffset], NVME_FC_TRADDR_HEXNAMELEN);
if (__nvme_fc_parse_u64(&wwn, &traddr->nn))
goto out_einval;
memcpy(&name[2], &buf[pnoffset], NVME_FC_TRADDR_HEXNAMELEN);
if (__nvme_fc_parse_u64(&wwn, &traddr->pn))
goto out_einval;
return 0;
out_einval:
pr_warn("%s: bad traddr string\n", __func__);
return -EINVAL;
}
static int
@ -2370,7 +2374,8 @@ nvmet_fc_add_port(struct nvmet_port *port)
/* map the traddr address info to a target port */
ret = nvmet_fc_parse_traddr(&traddr, port->disc_addr.traddr);
ret = nvme_fc_parse_traddr(&traddr, port->disc_addr.traddr,
sizeof(port->disc_addr.traddr));
if (ret)
return ret;

19
include/linux/nvme-fc.h
View File

@ -334,5 +334,24 @@ struct fcnvme_ls_disconnect_acc {
#define NVME_FC_LS_TIMEOUT_SEC 2 /* 2 seconds */
#define NVME_FC_TGTOP_TIMEOUT_SEC 2 /* 2 seconds */
/*
* TRADDR string must be of form "nn-<16hexdigits>:pn-<16hexdigits>"
* the string is allowed to be specified with or without a "0x" prefix
* infront of the <16hexdigits>. Without is considered the "min" string
* and with is considered the "max" string. The hexdigits may be upper
* or lower case.
*/
#define NVME_FC_TRADDR_NNLEN 3 /* "?n-" */
#define NVME_FC_TRADDR_OXNNLEN 5 /* "?n-0x" */
#define NVME_FC_TRADDR_HEXNAMELEN 16
#define NVME_FC_TRADDR_MINLENGTH \
(2 * (NVME_FC_TRADDR_NNLEN + NVME_FC_TRADDR_HEXNAMELEN) + 1)
#define NVME_FC_TRADDR_MAXLENGTH \
(2 * (NVME_FC_TRADDR_OXNNLEN + NVME_FC_TRADDR_HEXNAMELEN) + 1)
#define NVME_FC_TRADDR_MIN_PN_OFFSET \
(NVME_FC_TRADDR_NNLEN + NVME_FC_TRADDR_HEXNAMELEN + 1)
#define NVME_FC_TRADDR_MAX_PN_OFFSET \
(NVME_FC_TRADDR_OXNNLEN + NVME_FC_TRADDR_HEXNAMELEN + 1)
#endif /* _NVME_FC_H */

2
include/linux/nvme.h
View File

@ -1006,7 +1006,7 @@ static inline bool nvme_is_write(struct nvme_command *cmd)
* Why can't we simply have a Fabrics In and Fabrics out command?
*/
if (unlikely(cmd->common.opcode == nvme_fabrics_command))
return cmd->fabrics.opcode & 1;
return cmd->fabrics.fctype & 1;
return cmd->common.opcode & 1;
}