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[2.204.227.207]) by smtp.gmail.com with ESMTPSA id g10sm18915386wrx.4.2020.05.19.01.03.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2020 01:03:12 -0700 (PDT) From: Danil Kipnis To: linux-rdma@vger.kernel.org, jgg@ziepe.ca, linux-next@vger.kernel.org Cc: jinpu.wang@cloud.ionos.com, dledford@redhat.com, axboe@kernel.dk, linux-block@vger.kernel.org, bvanassche@acm.org, rdunlap@infradead.org, leon@kernel.org, Danil Kipnis Subject: [PATCH 1/1] rnbd/rtrs: pass max segment size from blk user to the rdma library Date: Tue, 19 May 2020 10:01:36 +0200 Message-Id: <20200519080136.885628-2-danil.kipnis@cloud.ionos.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200519080136.885628-1-danil.kipnis@cloud.ionos.com> References: <20200519080136.885628-1-danil.kipnis@cloud.ionos.com> MIME-Version: 1.0 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org When Block Device Layer is disabled, BLK_MAX_SEGMENT_SIZE is undefined. The rtrs is a transport library and should compile independently of the block layer. The desired max segment size should be passed down by the user. Introduce max_segment_size parameter for the rtrs_clt_open() call. Signed-off-by: Danil Kipnis Reported-by: Randy Dunlap --- drivers/block/rnbd/rnbd-clt.c | 1 + drivers/infiniband/ulp/rtrs/rtrs-clt.c | 17 +++++++++++------ drivers/infiniband/ulp/rtrs/rtrs-clt.h | 1 + drivers/infiniband/ulp/rtrs/rtrs.h | 1 + 4 files changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c index 55bff3b1be71..450a571e6a1e 100644 --- a/drivers/block/rnbd/rnbd-clt.c +++ b/drivers/block/rnbd/rnbd-clt.c @@ -1216,6 +1216,7 @@ find_and_get_or_create_sess(const char *sessname, paths, path_cnt, port_nr, sizeof(struct rnbd_iu), RECONNECT_DELAY, BMAX_SEGMENTS, + BLK_MAX_SEGMENT_SIZE, MAX_RECONNECTS); if (IS_ERR(sess->rtrs)) { err = PTR_ERR(sess->rtrs); diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c index 0fa3a229d90e..59a36831927b 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c +++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c @@ -12,7 +12,6 @@ #include #include -#include /* for BLK_MAX_SEGMENT_SIZE */ #include "rtrs-clt.h" #include "rtrs-log.h" @@ -1408,7 +1407,8 @@ static void rtrs_clt_close_work(struct work_struct *work); static struct rtrs_clt_sess *alloc_sess(struct rtrs_clt *clt, const struct rtrs_addr *path, - size_t con_num, u16 max_segments) + size_t con_num, u16 max_segments, + size_t max_segment_size) { struct rtrs_clt_sess *sess; int err = -ENOMEM; @@ -1445,7 +1445,7 @@ static struct rtrs_clt_sess *alloc_sess(struct rtrs_clt *clt, strlcpy(sess->s.sessname, clt->sessname, sizeof(sess->s.sessname)); sess->s.con_num = con_num; sess->clt = clt; - sess->max_pages_per_mr = max_segments * BLK_MAX_SEGMENT_SIZE >> 12; + sess->max_pages_per_mr = max_segments * max_segment_size >> 12; init_waitqueue_head(&sess->state_wq); sess->state = RTRS_CLT_CONNECTING; atomic_set(&sess->connected_cnt, 0); @@ -2531,6 +2531,7 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num, void (*link_ev)(void *priv, enum rtrs_clt_link_ev ev), unsigned int max_segments, + size_t max_segment_size, unsigned int reconnect_delay_sec, unsigned int max_reconnect_attempts) { @@ -2560,6 +2561,7 @@ static struct rtrs_clt *alloc_clt(const char *sessname, size_t paths_num, clt->port = port; clt->pdu_sz = pdu_sz; clt->max_segments = max_segments; + clt->max_segment_size = max_segment_size; clt->reconnect_delay_sec = reconnect_delay_sec; clt->max_reconnect_attempts = max_reconnect_attempts; clt->priv = priv; @@ -2641,6 +2643,7 @@ static void free_clt(struct rtrs_clt *clt) * @pdu_sz: Size of extra payload which can be accessed after permit allocation. * @reconnect_delay_sec: time between reconnect tries * @max_segments: Max. number of segments per IO request + * @max_segment_size: Max. size of one segment * @max_reconnect_attempts: Number of times to reconnect on error before giving * up, 0 for * disabled, -1 for forever * @@ -2655,6 +2658,7 @@ struct rtrs_clt *rtrs_clt_open(struct rtrs_clt_ops *ops, size_t paths_num, u16 port, size_t pdu_sz, u8 reconnect_delay_sec, u16 max_segments, + size_t max_segment_size, s16 max_reconnect_attempts) { struct rtrs_clt_sess *sess, *tmp; @@ -2663,7 +2667,7 @@ struct rtrs_clt *rtrs_clt_open(struct rtrs_clt_ops *ops, clt = alloc_clt(sessname, paths_num, port, pdu_sz, ops->priv, ops->link_ev, - max_segments, reconnect_delay_sec, + max_segments, max_segment_size, reconnect_delay_sec, max_reconnect_attempts); if (IS_ERR(clt)) { err = PTR_ERR(clt); @@ -2673,7 +2677,7 @@ struct rtrs_clt *rtrs_clt_open(struct rtrs_clt_ops *ops, struct rtrs_clt_sess *sess; sess = alloc_sess(clt, &paths[i], nr_cpu_ids, - max_segments); + max_segments, max_segment_size); if (IS_ERR(sess)) { err = PTR_ERR(sess); goto close_all_sess; @@ -2923,7 +2927,8 @@ int rtrs_clt_create_path_from_sysfs(struct rtrs_clt *clt, struct rtrs_clt_sess *sess; int err; - sess = alloc_sess(clt, addr, nr_cpu_ids, clt->max_segments); + sess = alloc_sess(clt, addr, nr_cpu_ids, clt->max_segments, + clt->max_segment_size); if (IS_ERR(sess)) return PTR_ERR(sess); diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.h b/drivers/infiniband/ulp/rtrs/rtrs-clt.h index 039a2ebba2f9..167acd3c90fc 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-clt.h +++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.h @@ -164,6 +164,7 @@ struct rtrs_clt { unsigned int max_reconnect_attempts; unsigned int reconnect_delay_sec; unsigned int max_segments; + size_t max_segment_size; void *permits; unsigned long *permits_map; size_t queue_depth; diff --git a/drivers/infiniband/ulp/rtrs/rtrs.h b/drivers/infiniband/ulp/rtrs/rtrs.h index 9879d40467b6..9af750f4d783 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs.h +++ b/drivers/infiniband/ulp/rtrs/rtrs.h @@ -58,6 +58,7 @@ struct rtrs_clt *rtrs_clt_open(struct rtrs_clt_ops *ops, size_t path_cnt, u16 port, size_t pdu_sz, u8 reconnect_delay_sec, u16 max_segments, + size_t max_segment_size, s16 max_reconnect_attempts); void rtrs_clt_close(struct rtrs_clt *sess);