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smb: server: make use smbdirect_socket.rw_io.credits

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This will allow to us to have functions moved into
common code in future (even if it's only used by the server).

Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Stefan Metzmacher
2025-08-14 12:01:50 +02:00
committed by Steve French
parent 73430a6446
commit 95475d8886
1 changed files with 22 additions and 22 deletions
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44
fs/smb/server/transport_rdma.c
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@@ -98,11 +98,6 @@ struct smb_direct_transport {
spinlock_t lock_new_recv_credits;
int new_recv_credits;
int max_rw_credits;
int pages_per_rw_credit;
atomic_t rw_credits;
wait_queue_head_t wait_rw_credits;
struct work_struct post_recv_credits_work;
struct work_struct send_immediate_work;
@@ -325,8 +320,6 @@ static struct smb_direct_transport *alloc_transport(struct rdma_cm_id *cm_id)
sc->ib.dev = sc->rdma.cm_id->device;
init_waitqueue_head(&t->wait_rw_credits);
spin_lock_init(&t->receive_credit_lock);
spin_lock_init(&t->lock_new_recv_credits);
@@ -969,14 +962,21 @@ static int wait_for_send_credits(struct smb_direct_transport *t,
static int wait_for_rw_credits(struct smb_direct_transport *t, int credits)
{
return wait_for_credits(t, &t->wait_rw_credits, &t->rw_credits, credits);
struct smbdirect_socket *sc = &t->socket;
return wait_for_credits(t,
&sc->rw_io.credits.wait_queue,
&sc->rw_io.credits.count,
credits);
}
static int calc_rw_credits(struct smb_direct_transport *t,
char *buf, unsigned int len)
{
struct smbdirect_socket *sc = &t->socket;
return DIV_ROUND_UP(get_buf_page_count(buf, len),
t->pages_per_rw_credit);
sc->rw_io.credits.num_pages);
}
static int smb_direct_create_header(struct smb_direct_transport *t,
@@ -1506,8 +1506,8 @@ out:
smb_direct_free_rdma_rw_msg(t, msg,
is_read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
atomic_add(credits_needed, &t->rw_credits);
wake_up(&t->wait_rw_credits);
atomic_add(credits_needed, &sc->rw_io.credits.count);
wake_up(&sc->rw_io.credits.wait_queue);
return ret;
}
@@ -1785,9 +1785,9 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
* MR invalidation.
*/
sp->max_read_write_size = smb_direct_max_read_write_size;
t->pages_per_rw_credit = smb_direct_get_max_fr_pages(t);
t->max_rw_credits = DIV_ROUND_UP(sp->max_read_write_size,
(t->pages_per_rw_credit - 1) *
sc->rw_io.credits.num_pages = smb_direct_get_max_fr_pages(t);
sc->rw_io.credits.max = DIV_ROUND_UP(sp->max_read_write_size,
(sc->rw_io.credits.num_pages - 1) *
PAGE_SIZE);
max_sge_per_wr = min_t(unsigned int, device->attrs.max_send_sge,
@@ -1795,9 +1795,9 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
max_sge_per_wr = max_t(unsigned int, max_sge_per_wr,
max_send_sges);
wrs_per_credit = max_t(unsigned int, 4,
DIV_ROUND_UP(t->pages_per_rw_credit,
DIV_ROUND_UP(sc->rw_io.credits.num_pages,
max_sge_per_wr) + 1);
max_rw_wrs = t->max_rw_credits * wrs_per_credit;
max_rw_wrs = sc->rw_io.credits.max * wrs_per_credit;
max_send_wrs = smb_direct_send_credit_target + max_rw_wrs;
if (max_send_wrs > device->attrs.max_cqe ||
@@ -1836,7 +1836,7 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
t->new_recv_credits = 0;
sp->send_credit_target = smb_direct_send_credit_target;
atomic_set(&t->rw_credits, t->max_rw_credits);
atomic_set(&sc->rw_io.credits.count, sc->rw_io.credits.max);
sp->max_send_size = smb_direct_max_send_size;
sp->max_recv_size = smb_direct_max_receive_size;
@@ -1847,7 +1847,7 @@ static int smb_direct_init_params(struct smb_direct_transport *t,
cap->max_send_sge = SMBDIRECT_SEND_IO_MAX_SGE;
cap->max_recv_sge = SMBDIRECT_RECV_IO_MAX_SGE;
cap->max_inline_data = 0;
cap->max_rdma_ctxs = t->max_rw_credits;
cap->max_rdma_ctxs = sc->rw_io.credits.max;
return 0;
}
@@ -1981,11 +1981,11 @@ static int smb_direct_create_qpair(struct smb_direct_transport *t,
pages_per_rw = DIV_ROUND_UP(sp->max_read_write_size, PAGE_SIZE) + 1;
if (pages_per_rw > sc->ib.dev->attrs.max_sgl_rd) {
ret = ib_mr_pool_init(sc->ib.qp, &sc->ib.qp->rdma_mrs,
t->max_rw_credits, IB_MR_TYPE_MEM_REG,
t->pages_per_rw_credit, 0);
sc->rw_io.credits.max, IB_MR_TYPE_MEM_REG,
sc->rw_io.credits.num_pages, 0);
if (ret) {
pr_err("failed to init mr pool count %d pages %d\n",
t->max_rw_credits, t->pages_per_rw_credit);
pr_err("failed to init mr pool count %zu pages %zu\n",
sc->rw_io.credits.max, sc->rw_io.credits.num_pages);
goto err;
}
}