diff options
Diffstat (limited to 'net/rds')
| -rw-r--r-- | net/rds/ib.c | 2 | ||||
| -rw-r--r-- | net/rds/ib.h | 6 | ||||
| -rw-r--r-- | net/rds/ib_cm.c | 2 | ||||
| -rw-r--r-- | net/rds/ib_send.c | 71 | ||||
| -rw-r--r-- | net/rds/iw.c | 2 | ||||
| -rw-r--r-- | net/rds/iw.h | 9 | ||||
| -rw-r--r-- | net/rds/iw_cm.c | 2 | ||||
| -rw-r--r-- | net/rds/iw_rdma.c | 129 | ||||
| -rw-r--r-- | net/rds/iw_send.c | 154 | ||||
| -rw-r--r-- | net/rds/rdma_transport.c | 4 |
10 files changed, 178 insertions, 203 deletions
diff --git a/net/rds/ib.c b/net/rds/ib.c index a833ab7898fe..f222885ac0c7 100644 --- a/net/rds/ib.c +++ b/net/rds/ib.c @@ -336,7 +336,7 @@ static int rds_ib_laddr_check(struct net *net, __be32 addr) /* Create a CMA ID and try to bind it. This catches both * IB and iWARP capable NICs. */ - cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); + cm_id = rdma_create_id(&init_net, NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(cm_id)) return PTR_ERR(cm_id); diff --git a/net/rds/ib.h b/net/rds/ib.h index f17d09567890..b3fdebb57460 100644 --- a/net/rds/ib.h +++ b/net/rds/ib.h @@ -75,7 +75,11 @@ struct rds_ib_connect_private { struct rds_ib_send_work { void *s_op; - struct ib_send_wr s_wr; + union { + struct ib_send_wr s_wr; + struct ib_rdma_wr s_rdma_wr; + struct ib_atomic_wr s_atomic_wr; + }; struct ib_sge s_sge[RDS_IB_MAX_SGE]; unsigned long s_queued; }; diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c index 2b2370e7f356..da5a7fb98c77 100644 --- a/net/rds/ib_cm.c +++ b/net/rds/ib_cm.c @@ -668,7 +668,7 @@ int rds_ib_conn_connect(struct rds_connection *conn) /* XXX I wonder what affect the port space has */ /* delegate cm event handler to rdma_transport */ - ic->i_cm_id = rdma_create_id(rds_rdma_cm_event_handler, conn, + ic->i_cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, conn, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(ic->i_cm_id)) { ret = PTR_ERR(ic->i_cm_id); diff --git a/net/rds/ib_send.c b/net/rds/ib_send.c index 670882c752e9..eac30bf486d7 100644 --- a/net/rds/ib_send.c +++ b/net/rds/ib_send.c @@ -777,23 +777,23 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op) send->s_queued = jiffies; if (op->op_type == RDS_ATOMIC_TYPE_CSWP) { - send->s_wr.opcode = IB_WR_MASKED_ATOMIC_CMP_AND_SWP; - send->s_wr.wr.atomic.compare_add = op->op_m_cswp.compare; - send->s_wr.wr.atomic.swap = op->op_m_cswp.swap; - send->s_wr.wr.atomic.compare_add_mask = op->op_m_cswp.compare_mask; - send->s_wr.wr.atomic.swap_mask = op->op_m_cswp.swap_mask; + send->s_atomic_wr.wr.opcode = IB_WR_MASKED_ATOMIC_CMP_AND_SWP; + send->s_atomic_wr.compare_add = op->op_m_cswp.compare; + send->s_atomic_wr.swap = op->op_m_cswp.swap; + send->s_atomic_wr.compare_add_mask = op->op_m_cswp.compare_mask; + send->s_atomic_wr.swap_mask = op->op_m_cswp.swap_mask; } else { /* FADD */ - send->s_wr.opcode = IB_WR_MASKED_ATOMIC_FETCH_AND_ADD; - send->s_wr.wr.atomic.compare_add = op->op_m_fadd.add; - send->s_wr.wr.atomic.swap = 0; - send->s_wr.wr.atomic.compare_add_mask = op->op_m_fadd.nocarry_mask; - send->s_wr.wr.atomic.swap_mask = 0; + send->s_atomic_wr.wr.opcode = IB_WR_MASKED_ATOMIC_FETCH_AND_ADD; + send->s_atomic_wr.compare_add = op->op_m_fadd.add; + send->s_atomic_wr.swap = 0; + send->s_atomic_wr.compare_add_mask = op->op_m_fadd.nocarry_mask; + send->s_atomic_wr.swap_mask = 0; } nr_sig = rds_ib_set_wr_signal_state(ic, send, op->op_notify); - send->s_wr.num_sge = 1; - send->s_wr.next = NULL; - send->s_wr.wr.atomic.remote_addr = op->op_remote_addr; - send->s_wr.wr.atomic.rkey = op->op_rkey; + send->s_atomic_wr.wr.num_sge = 1; + send->s_atomic_wr.wr.next = NULL; + send->s_atomic_wr.remote_addr = op->op_remote_addr; + send->s_atomic_wr.rkey = op->op_rkey; send->s_op = op; rds_message_addref(container_of(send->s_op, struct rds_message, atomic)); @@ -818,11 +818,11 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op) if (nr_sig) atomic_add(nr_sig, &ic->i_signaled_sends); - failed_wr = &send->s_wr; - ret = ib_post_send(ic->i_cm_id->qp, &send->s_wr, &failed_wr); + failed_wr = &send->s_atomic_wr.wr; + ret = ib_post_send(ic->i_cm_id->qp, &send->s_atomic_wr.wr, &failed_wr); rdsdebug("ic %p send %p (wr %p) ret %d wr %p\n", ic, - send, &send->s_wr, ret, failed_wr); - BUG_ON(failed_wr != &send->s_wr); + send, &send->s_atomic_wr, ret, failed_wr); + BUG_ON(failed_wr != &send->s_atomic_wr.wr); if (ret) { printk(KERN_WARNING "RDS/IB: atomic ib_post_send to %pI4 " "returned %d\n", &conn->c_faddr, ret); @@ -831,9 +831,9 @@ int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op) goto out; } - if (unlikely(failed_wr != &send->s_wr)) { + if (unlikely(failed_wr != &send->s_atomic_wr.wr)) { printk(KERN_WARNING "RDS/IB: atomic ib_post_send() rc=%d, but failed_wqe updated!\n", ret); - BUG_ON(failed_wr != &send->s_wr); + BUG_ON(failed_wr != &send->s_atomic_wr.wr); } out: @@ -904,22 +904,23 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) nr_sig += rds_ib_set_wr_signal_state(ic, send, op->op_notify); send->s_wr.opcode = op->op_write ? IB_WR_RDMA_WRITE : IB_WR_RDMA_READ; - send->s_wr.wr.rdma.remote_addr = remote_addr; - send->s_wr.wr.rdma.rkey = op->op_rkey; + send->s_rdma_wr.remote_addr = remote_addr; + send->s_rdma_wr.rkey = op->op_rkey; if (num_sge > max_sge) { - send->s_wr.num_sge = max_sge; + send->s_rdma_wr.wr.num_sge = max_sge; num_sge -= max_sge; } else { - send->s_wr.num_sge = num_sge; + send->s_rdma_wr.wr.num_sge = num_sge; } - send->s_wr.next = NULL; + send->s_rdma_wr.wr.next = NULL; if (prev) - prev->s_wr.next = &send->s_wr; + prev->s_rdma_wr.wr.next = &send->s_rdma_wr.wr; - for (j = 0; j < send->s_wr.num_sge && scat != &op->op_sg[op->op_count]; j++) { + for (j = 0; j < send->s_rdma_wr.wr.num_sge && + scat != &op->op_sg[op->op_count]; j++) { len = ib_sg_dma_len(ic->i_cm_id->device, scat); send->s_sge[j].addr = ib_sg_dma_address(ic->i_cm_id->device, scat); @@ -934,7 +935,9 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) } rdsdebug("send %p wr %p num_sge %u next %p\n", send, - &send->s_wr, send->s_wr.num_sge, send->s_wr.next); + &send->s_rdma_wr.wr, + send->s_rdma_wr.wr.num_sge, + send->s_rdma_wr.wr.next); prev = send; if (++send == &ic->i_sends[ic->i_send_ring.w_nr]) @@ -955,11 +958,11 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) if (nr_sig) atomic_add(nr_sig, &ic->i_signaled_sends); - failed_wr = &first->s_wr; - ret = ib_post_send(ic->i_cm_id->qp, &first->s_wr, &failed_wr); + failed_wr = &first->s_rdma_wr.wr; + ret = ib_post_send(ic->i_cm_id->qp, &first->s_rdma_wr.wr, &failed_wr); rdsdebug("ic %p first %p (wr %p) ret %d wr %p\n", ic, - first, &first->s_wr, ret, failed_wr); - BUG_ON(failed_wr != &first->s_wr); + first, &first->s_rdma_wr.wr, ret, failed_wr); + BUG_ON(failed_wr != &first->s_rdma_wr.wr); if (ret) { printk(KERN_WARNING "RDS/IB: rdma ib_post_send to %pI4 " "returned %d\n", &conn->c_faddr, ret); @@ -968,9 +971,9 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) goto out; } - if (unlikely(failed_wr != &first->s_wr)) { + if (unlikely(failed_wr != &first->s_rdma_wr.wr)) { printk(KERN_WARNING "RDS/IB: ib_post_send() rc=%d, but failed_wqe updated!\n", ret); - BUG_ON(failed_wr != &first->s_wr); + BUG_ON(failed_wr != &first->s_rdma_wr.wr); } diff --git a/net/rds/iw.c b/net/rds/iw.c index 3df0295c6659..576f1825fc55 100644 --- a/net/rds/iw.c +++ b/net/rds/iw.c @@ -223,7 +223,7 @@ static int rds_iw_laddr_check(struct net *net, __be32 addr) /* Create a CMA ID and try to bind it. This catches both * IB and iWARP capable NICs. */ - cm_id = rdma_create_id(NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); + cm_id = rdma_create_id(&init_net, NULL, NULL, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(cm_id)) return PTR_ERR(cm_id); diff --git a/net/rds/iw.h b/net/rds/iw.h index cbe6674e31ee..5af01d1758b3 100644 --- a/net/rds/iw.h +++ b/net/rds/iw.h @@ -74,10 +74,13 @@ struct rds_iw_send_work { struct rm_rdma_op *s_op; struct rds_iw_mapping *s_mapping; struct ib_mr *s_mr; - struct ib_fast_reg_page_list *s_page_list; unsigned char s_remap_count; - struct ib_send_wr s_wr; + union { + struct ib_send_wr s_send_wr; + struct ib_rdma_wr s_rdma_wr; + struct ib_reg_wr s_reg_wr; + }; struct ib_sge s_sge[RDS_IW_MAX_SGE]; unsigned long s_queued; }; @@ -195,7 +198,7 @@ struct rds_iw_device { /* Magic WR_ID for ACKs */ #define RDS_IW_ACK_WR_ID ((u64)0xffffffffffffffffULL) -#define RDS_IW_FAST_REG_WR_ID ((u64)0xefefefefefefefefULL) +#define RDS_IW_REG_WR_ID ((u64)0xefefefefefefefefULL) #define RDS_IW_LOCAL_INV_WR_ID ((u64)0xdfdfdfdfdfdfdfdfULL) struct rds_iw_statistics { diff --git a/net/rds/iw_cm.c b/net/rds/iw_cm.c index a6553a6fb2bc..aea4c911bc76 100644 --- a/net/rds/iw_cm.c +++ b/net/rds/iw_cm.c @@ -524,7 +524,7 @@ int rds_iw_conn_connect(struct rds_connection *conn) /* XXX I wonder what affect the port space has */ /* delegate cm event handler to rdma_transport */ - ic->i_cm_id = rdma_create_id(rds_rdma_cm_event_handler, conn, + ic->i_cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, conn, RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(ic->i_cm_id)) { ret = PTR_ERR(ic->i_cm_id); diff --git a/net/rds/iw_rdma.c b/net/rds/iw_rdma.c index d3d4454ffc84..b09a40c1adce 100644 --- a/net/rds/iw_rdma.c +++ b/net/rds/iw_rdma.c @@ -47,7 +47,6 @@ struct rds_iw_mr { struct rdma_cm_id *cm_id; struct ib_mr *mr; - struct ib_fast_reg_page_list *page_list; struct rds_iw_mapping mapping; unsigned char remap_count; @@ -77,8 +76,8 @@ struct rds_iw_mr_pool { static void rds_iw_flush_mr_pool(struct rds_iw_mr_pool *pool, int free_all); static void rds_iw_mr_pool_flush_worker(struct work_struct *work); -static int rds_iw_init_fastreg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr); -static int rds_iw_map_fastreg(struct rds_iw_mr_pool *pool, +static int rds_iw_init_reg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr); +static int rds_iw_map_reg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr, struct scatterlist *sg, unsigned int nents); static void rds_iw_free_fastreg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr); @@ -258,19 +257,18 @@ static void rds_iw_set_scatterlist(struct rds_iw_scatterlist *sg, sg->bytes = 0; } -static u64 *rds_iw_map_scatterlist(struct rds_iw_device *rds_iwdev, - struct rds_iw_scatterlist *sg) +static int rds_iw_map_scatterlist(struct rds_iw_device *rds_iwdev, + struct rds_iw_scatterlist *sg) { struct ib_device *dev = rds_iwdev->dev; - u64 *dma_pages = NULL; - int i, j, ret; + int i, ret; WARN_ON(sg->dma_len); sg->dma_len = ib_dma_map_sg(dev, sg->list, sg->len, DMA_BIDIRECTIONAL); if (unlikely(!sg->dma_len)) { printk(KERN_WARNING "RDS/IW: dma_map_sg failed!\n"); - return ERR_PTR(-EBUSY); + return -EBUSY; } sg->bytes = 0; @@ -303,31 +301,14 @@ static u64 *rds_iw_map_scatterlist(struct rds_iw_device *rds_iwdev, if (sg->dma_npages > fastreg_message_size) goto out_unmap; - dma_pages = kmalloc(sizeof(u64) * sg->dma_npages, GFP_ATOMIC); - if (!dma_pages) { - ret = -ENOMEM; - goto out_unmap; - } - for (i = j = 0; i < sg->dma_len; ++i) { - unsigned int dma_len = ib_sg_dma_len(dev, &sg->list[i]); - u64 dma_addr = ib_sg_dma_address(dev, &sg->list[i]); - u64 end_addr; - end_addr = dma_addr + dma_len; - dma_addr &= ~PAGE_MASK; - for (; dma_addr < end_addr; dma_addr += PAGE_SIZE) - dma_pages[j++] = dma_addr; - BUG_ON(j > sg->dma_npages); - } - - return dma_pages; + return 0; out_unmap: ib_dma_unmap_sg(rds_iwdev->dev, sg->list, sg->len, DMA_BIDIRECTIONAL); sg->dma_len = 0; - kfree(dma_pages); - return ERR_PTR(ret); + return ret; } @@ -440,7 +421,7 @@ static struct rds_iw_mr *rds_iw_alloc_mr(struct rds_iw_device *rds_iwdev) INIT_LIST_HEAD(&ibmr->mapping.m_list); ibmr->mapping.m_mr = ibmr; - err = rds_iw_init_fastreg(pool, ibmr); + err = rds_iw_init_reg(pool, ibmr); if (err) goto out_no_cigar; @@ -620,7 +601,7 @@ void *rds_iw_get_mr(struct scatterlist *sg, unsigned long nents, ibmr->cm_id = cm_id; ibmr->device = rds_iwdev; - ret = rds_iw_map_fastreg(rds_iwdev->mr_pool, ibmr, sg, nents); + ret = rds_iw_map_reg(rds_iwdev->mr_pool, ibmr, sg, nents); if (ret == 0) *key_ret = ibmr->mr->rkey; else @@ -636,7 +617,7 @@ out: } /* - * iWARP fastreg handling + * iWARP reg handling * * The life cycle of a fastreg registration is a bit different from * FMRs. @@ -648,7 +629,7 @@ out: * This creates a bit of a problem for us, as we do not have the destination * IP in GET_MR, so the connection must be setup prior to the GET_MR call for * RDMA to be correctly setup. If a fastreg request is present, rds_iw_xmit - * will try to queue a LOCAL_INV (if needed) and a FAST_REG_MR work request + * will try to queue a LOCAL_INV (if needed) and a REG_MR work request * before queuing the SEND. When completions for these arrive, they are * dispatched to the MR has a bit set showing that RDMa can be performed. * @@ -657,11 +638,10 @@ out: * The expectation there is that this invalidation step includes ALL * PREVIOUSLY FREED MRs. */ -static int rds_iw_init_fastreg(struct rds_iw_mr_pool *pool, - struct rds_iw_mr *ibmr) +static int rds_iw_init_reg(struct rds_iw_mr_pool *pool, + struct rds_iw_mr *ibmr) { struct rds_iw_device *rds_iwdev = pool->device; - struct ib_fast_reg_page_list *page_list = NULL; struct ib_mr *mr; int err; @@ -674,55 +654,44 @@ static int rds_iw_init_fastreg(struct rds_iw_mr_pool *pool, return err; } - /* FIXME - this is overkill, but mapping->m_sg.dma_len/mapping->m_sg.dma_npages - * is not filled in. - */ - page_list = ib_alloc_fast_reg_page_list(rds_iwdev->dev, pool->max_message_size); - if (IS_ERR(page_list)) { - err = PTR_ERR(page_list); - - printk(KERN_WARNING "RDS/IW: ib_alloc_fast_reg_page_list failed (err=%d)\n", err); - ib_dereg_mr(mr); - return err; - } - - ibmr->page_list = page_list; ibmr->mr = mr; return 0; } -static int rds_iw_rdma_build_fastreg(struct rds_iw_mapping *mapping) +static int rds_iw_rdma_reg_mr(struct rds_iw_mapping *mapping) { struct rds_iw_mr *ibmr = mapping->m_mr; - struct ib_send_wr f_wr, *failed_wr; - int ret; + struct rds_iw_scatterlist *m_sg = &mapping->m_sg; + struct ib_reg_wr reg_wr; + struct ib_send_wr *failed_wr; + int ret, n; + + n = ib_map_mr_sg_zbva(ibmr->mr, m_sg->list, m_sg->len, PAGE_SIZE); + if (unlikely(n != m_sg->len)) + return n < 0 ? n : -EINVAL; + + reg_wr.wr.next = NULL; + reg_wr.wr.opcode = IB_WR_REG_MR; + reg_wr.wr.wr_id = RDS_IW_REG_WR_ID; + reg_wr.wr.num_sge = 0; + reg_wr.mr = ibmr->mr; + reg_wr.key = mapping->m_rkey; + reg_wr.access = IB_ACCESS_LOCAL_WRITE | + IB_ACCESS_REMOTE_READ | + IB_ACCESS_REMOTE_WRITE; /* - * Perform a WR for the fast_reg_mr. Each individual page + * Perform a WR for the reg_mr. Each individual page * in the sg list is added to the fast reg page list and placed - * inside the fast_reg_mr WR. The key used is a rolling 8bit + * inside the reg_mr WR. The key used is a rolling 8bit * counter, which should guarantee uniqueness. */ ib_update_fast_reg_key(ibmr->mr, ibmr->remap_count++); mapping->m_rkey = ibmr->mr->rkey; - memset(&f_wr, 0, sizeof(f_wr)); - f_wr.wr_id = RDS_IW_FAST_REG_WR_ID; - f_wr.opcode = IB_WR_FAST_REG_MR; - f_wr.wr.fast_reg.length = mapping->m_sg.bytes; - f_wr.wr.fast_reg.rkey = mapping->m_rkey; - f_wr.wr.fast_reg.page_list = ibmr->page_list; - f_wr.wr.fast_reg.page_list_len = mapping->m_sg.dma_len; - f_wr.wr.fast_reg.page_shift = PAGE_SHIFT; - f_wr.wr.fast_reg.access_flags = IB_ACCESS_LOCAL_WRITE | - IB_ACCESS_REMOTE_READ | - IB_ACCESS_REMOTE_WRITE; - f_wr.wr.fast_reg.iova_start = 0; - f_wr.send_flags = IB_SEND_SIGNALED; - - failed_wr = &f_wr; - ret = ib_post_send(ibmr->cm_id->qp, &f_wr, &failed_wr); - BUG_ON(failed_wr != &f_wr); + failed_wr = ®_wr.wr; + ret = ib_post_send(ibmr->cm_id->qp, ®_wr.wr, &failed_wr); + BUG_ON(failed_wr != ®_wr.wr); if (ret) printk_ratelimited(KERN_WARNING "RDS/IW: %s:%d ib_post_send returned %d\n", __func__, __LINE__, ret); @@ -754,21 +723,20 @@ out: return ret; } -static int rds_iw_map_fastreg(struct rds_iw_mr_pool *pool, - struct rds_iw_mr *ibmr, - struct scatterlist *sg, - unsigned int sg_len) +static int rds_iw_map_reg(struct rds_iw_mr_pool *pool, + struct rds_iw_mr *ibmr, + struct scatterlist *sg, + unsigned int sg_len) { struct rds_iw_device *rds_iwdev = pool->device; struct rds_iw_mapping *mapping = &ibmr->mapping; u64 *dma_pages; - int i, ret = 0; + int ret = 0; rds_iw_set_scatterlist(&mapping->m_sg, sg, sg_len); - dma_pages = rds_iw_map_scatterlist(rds_iwdev, &mapping->m_sg); - if (IS_ERR(dma_pages)) { - ret = PTR_ERR(dma_pages); + ret = rds_iw_map_scatterlist(rds_iwdev, &mapping->m_sg); + if (ret) { dma_pages = NULL; goto out; } @@ -778,10 +746,7 @@ static int rds_iw_map_fastreg(struct rds_iw_mr_pool *pool, goto out; } - for (i = 0; i < mapping->m_sg.dma_npages; ++i) - ibmr->page_list->page_list[i] = dma_pages[i]; - - ret = rds_iw_rdma_build_fastreg(mapping); + ret = rds_iw_rdma_reg_mr(mapping); if (ret) goto out; @@ -867,8 +832,6 @@ static unsigned int rds_iw_unmap_fastreg_list(struct rds_iw_mr_pool *pool, static void rds_iw_destroy_fastreg(struct rds_iw_mr_pool *pool, struct rds_iw_mr *ibmr) { - if (ibmr->page_list) - ib_free_fast_reg_page_list(ibmr->page_list); if (ibmr->mr) ib_dereg_mr(ibmr->mr); } diff --git a/net/rds/iw_send.c b/net/rds/iw_send.c index 86152ec3b887..e20bd503f4bd 100644 --- a/net/rds/iw_send.c +++ b/net/rds/iw_send.c @@ -137,13 +137,13 @@ void rds_iw_send_init_ring(struct rds_iw_connection *ic) send->s_op = NULL; send->s_mapping = NULL; - send->s_wr.next = NULL; - send->s_wr.wr_id = i; - send->s_wr.sg_list = send->s_sge; - send->s_wr.num_sge = 1; - send->s_wr.opcode = IB_WR_SEND; - send->s_wr.send_flags = 0; - send->s_wr.ex.imm_data = 0; + send->s_send_wr.next = NULL; + send->s_send_wr.wr_id = i; + send->s_send_wr.sg_list = send->s_sge; + send->s_send_wr.num_sge = 1; + send->s_send_wr.opcode = IB_WR_SEND; + send->s_send_wr.send_flags = 0; + send->s_send_wr.ex.imm_data = 0; sge = rds_iw_data_sge(ic, send->s_sge); sge->lkey = 0; @@ -159,13 +159,6 @@ void rds_iw_send_init_ring(struct rds_iw_connection *ic) printk(KERN_WARNING "RDS/IW: ib_alloc_mr failed\n"); break; } - - send->s_page_list = ib_alloc_fast_reg_page_list( - ic->i_cm_id->device, fastreg_message_size); - if (IS_ERR(send->s_page_list)) { - printk(KERN_WARNING "RDS/IW: ib_alloc_fast_reg_page_list failed\n"); - break; - } } } @@ -177,9 +170,7 @@ void rds_iw_send_clear_ring(struct rds_iw_connection *ic) for (i = 0, send = ic->i_sends; i < ic->i_send_ring.w_nr; i++, send++) { BUG_ON(!send->s_mr); ib_dereg_mr(send->s_mr); - BUG_ON(!send->s_page_list); - ib_free_fast_reg_page_list(send->s_page_list); - if (send->s_wr.opcode == 0xdead) + if (send->s_send_wr.opcode == 0xdead) continue; if (send->s_rm) rds_iw_send_unmap_rm(ic, send, IB_WC_WR_FLUSH_ERR); @@ -227,7 +218,7 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context) continue; } - if (wc.opcode == IB_WC_FAST_REG_MR && wc.wr_id == RDS_IW_FAST_REG_WR_ID) { + if (wc.opcode == IB_WC_REG_MR && wc.wr_id == RDS_IW_REG_WR_ID) { ic->i_fastreg_posted = 1; continue; } @@ -247,12 +238,12 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context) send = &ic->i_sends[oldest]; /* In the error case, wc.opcode sometimes contains garbage */ - switch (send->s_wr.opcode) { + switch (send->s_send_wr.opcode) { case IB_WR_SEND: if (send->s_rm) rds_iw_send_unmap_rm(ic, send, wc.status); break; - case IB_WR_FAST_REG_MR: + case IB_WR_REG_MR: case IB_WR_RDMA_WRITE: case IB_WR_RDMA_READ: case IB_WR_RDMA_READ_WITH_INV: @@ -262,12 +253,12 @@ void rds_iw_send_cq_comp_handler(struct ib_cq *cq, void *context) default: printk_ratelimited(KERN_NOTICE "RDS/IW: %s: unexpected opcode 0x%x in WR!\n", - __func__, send->s_wr.opcode); + __func__, send->s_send_wr.opcode); break; } - send->s_wr.opcode = 0xdead; - send->s_wr.num_sge = 1; + send->s_send_wr.opcode = 0xdead; + send->s_send_wr.num_sge = 1; if (time_after(jiffies, send->s_queued + HZ/2)) rds_iw_stats_inc(s_iw_tx_stalled); @@ -455,10 +446,10 @@ rds_iw_xmit_populate_wr(struct rds_iw_connection *ic, WARN_ON(pos != send - ic->i_sends); - send->s_wr.send_flags = send_flags; - send->s_wr.opcode = IB_WR_SEND; - send->s_wr.num_sge = 2; - send->s_wr.next = NULL; + send->s_send_wr.send_flags = send_flags; + send->s_send_wr.opcode = IB_WR_SEND; + send->s_send_wr.num_sge = 2; + send->s_send_wr.next = NULL; send->s_queued = jiffies; send->s_op = NULL; @@ -472,7 +463,7 @@ rds_iw_xmit_populate_wr(struct rds_iw_connection *ic, } else { /* We're sending a packet with no payload. There is only * one SGE */ - send->s_wr.num_sge = 1; + send->s_send_wr.num_sge = 1; sge = &send->s_sge[0]; } @@ -672,23 +663,23 @@ int rds_iw_xmit(struct rds_connection *conn, struct rds_message *rm, */ if (ic->i_unsignaled_wrs-- == 0) { ic->i_unsignaled_wrs = rds_iw_sysctl_max_unsig_wrs; - send->s_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; + send->s_send_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; } ic->i_unsignaled_bytes -= len; if (ic->i_unsignaled_bytes <= 0) { ic->i_unsignaled_bytes = rds_iw_sysctl_max_unsig_bytes; - send->s_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; + send->s_send_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; } /* * Always signal the last one if we're stopping due to flow control. */ if (flow_controlled && i == (work_alloc-1)) - send->s_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; + send->s_send_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; rdsdebug("send %p wr %p num_sge %u next %p\n", send, - &send->s_wr, send->s_wr.num_sge, send->s_wr.next); + &send->s_send_wr, send->s_send_wr.num_sge, send->s_send_wr.next); sent += len; rm->data.op_dmaoff += len; @@ -722,7 +713,7 @@ add_header: } if (prev) - prev->s_wr.next = &send->s_wr; + prev->s_send_wr.next = &send->s_send_wr; prev = send; pos = (pos + 1) % ic->i_send_ring.w_nr; @@ -736,7 +727,7 @@ add_header: /* if we finished the message then send completion owns it */ if (scat == &rm->data.op_sg[rm->data.op_count]) { prev->s_rm = ic->i_rm; - prev->s_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; + prev->s_send_wr.send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED; ic->i_rm = NULL; } @@ -748,11 +739,11 @@ add_header: rds_iw_send_add_credits(conn, credit_alloc - i); /* XXX need to worry about failed_wr and partial sends. */ - failed_wr = &first->s_wr; - ret = ib_post_send(ic->i_cm_id->qp, &first->s_wr, &failed_wr); + failed_wr = &first->s_send_wr; + ret = ib_post_send(ic->i_cm_id->qp, &first->s_send_wr, &failed_wr); rdsdebug("ic %p first %p (wr %p) ret %d wr %p\n", ic, - first, &first->s_wr, ret, failed_wr); - BUG_ON(failed_wr != &first->s_wr); + first, &first->s_send_wr, ret, failed_wr); + BUG_ON(failed_wr != &first->s_send_wr); if (ret) { printk(KERN_WARNING "RDS/IW: ib_post_send to %pI4 " "returned %d\n", &conn->c_faddr, ret); @@ -770,24 +761,26 @@ out: return ret; } -static void rds_iw_build_send_fastreg(struct rds_iw_device *rds_iwdev, struct rds_iw_connection *ic, struct rds_iw_send_work *send, int nent, int len, u64 sg_addr) +static int rds_iw_build_send_reg(struct rds_iw_send_work *send, + struct scatterlist *sg, + int sg_nents) { - BUG_ON(nent > send->s_page_list->max_page_list_len); - /* - * Perform a WR for the fast_reg_mr. Each individual page - * in the sg list is added to the fast reg page list and placed - * inside the fast_reg_mr WR. - */ - send->s_wr.opcode = IB_WR_FAST_REG_MR; - send->s_wr.wr.fast_reg.length = len; - send->s_wr.wr.fast_reg.rkey = send->s_mr->rkey; - send->s_wr.wr.fast_reg.page_list = send->s_page_list; - send->s_wr.wr.fast_reg.page_list_len = nent; - send->s_wr.wr.fast_reg.page_shift = PAGE_SHIFT; - send->s_wr.wr.fast_reg.access_flags = IB_ACCESS_REMOTE_WRITE; - send->s_wr.wr.fast_reg.iova_start = sg_addr; + int n; + + n = ib_map_mr_sg(send->s_mr, sg, sg_nents, PAGE_SIZE); + if (unlikely(n != sg_nents)) + return n < 0 ? n : -EINVAL; + + send->s_reg_wr.wr.opcode = IB_WR_REG_MR; + send->s_reg_wr.wr.wr_id = 0; + send->s_reg_wr.wr.num_sge = 0; + send->s_reg_wr.mr = send->s_mr; + send->s_reg_wr.key = send->s_mr->rkey; + send->s_reg_wr.access = IB_ACCESS_REMOTE_WRITE; ib_update_fast_reg_key(send->s_mr, send->s_remap_count++); + + return 0; } int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) @@ -808,6 +801,7 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) int sent; int ret; int num_sge; + int sg_nents; rds_iwdev = ib_get_client_data(ic->i_cm_id->device, &rds_iw_client); @@ -861,9 +855,10 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) scat = &op->op_sg[0]; sent = 0; num_sge = op->op_count; + sg_nents = 0; for (i = 0; i < work_alloc && scat != &op->op_sg[op->op_count]; i++) { - send->s_wr.send_flags = 0; + send->s_rdma_wr.wr.send_flags = 0; send->s_queued = jiffies; /* @@ -872,7 +867,7 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) */ if (ic->i_unsignaled_wrs-- == 0) { ic->i_unsignaled_wrs = rds_iw_sysctl_max_unsig_wrs; - send->s_wr.send_flags = IB_SEND_SIGNALED; + send->s_rdma_wr.wr.send_flags = IB_SEND_SIGNALED; } /* To avoid the need to have the plumbing to invalidate the fastreg_mr used @@ -880,30 +875,31 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) * IB_WR_RDMA_READ_WITH_INV will invalidate it after the read has completed. */ if (op->op_write) - send->s_wr.opcode = IB_WR_RDMA_WRITE; + send->s_rdma_wr.wr.opcode = IB_WR_RDMA_WRITE; else - send->s_wr.opcode = IB_WR_RDMA_READ_WITH_INV; + send->s_rdma_wr.wr.opcode = IB_WR_RDMA_READ_WITH_INV; - send->s_wr.wr.rdma.remote_addr = remote_addr; - send->s_wr.wr.rdma.rkey = op->op_rkey; + send->s_rdma_wr.remote_addr = remote_addr; + send->s_rdma_wr.rkey = op->op_rkey; send->s_op = op; if (num_sge > rds_iwdev->max_sge) { - send->s_wr.num_sge = rds_iwdev->max_sge; + send->s_rdma_wr.wr.num_sge = rds_iwdev->max_sge; num_sge -= rds_iwdev->max_sge; } else - send->s_wr.num_sge = num_sge; + send->s_rdma_wr.wr.num_sge = num_sge; - send->s_wr.next = NULL; + send->s_rdma_wr.wr.next = NULL; if (prev) - prev->s_wr.next = &send->s_wr; + prev->s_send_wr.next = &send->s_rdma_wr.wr; - for (j = 0; j < send->s_wr.num_sge && scat != &op->op_sg[op->op_count]; j++) { + for (j = 0; j < send->s_rdma_wr.wr.num_sge && + scat != &op->op_sg[op->op_count]; j++) { len = ib_sg_dma_len(ic->i_cm_id->device, scat); - if (send->s_wr.opcode == IB_WR_RDMA_READ_WITH_INV) - send->s_page_list->page_list[j] = ib_sg_dma_address(ic->i_cm_id->device, scat); + if (send->s_rdma_wr.wr.opcode == IB_WR_RDMA_READ_WITH_INV) + sg_nents++; else { send->s_sge[j].addr = ib_sg_dma_address(ic->i_cm_id->device, scat); send->s_sge[j].length = len; @@ -917,15 +913,17 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) scat++; } - if (send->s_wr.opcode == IB_WR_RDMA_READ_WITH_INV) { - send->s_wr.num_sge = 1; + if (send->s_rdma_wr.wr.opcode == IB_WR_RDMA_READ_WITH_INV) { + send->s_rdma_wr.wr.num_sge = 1; send->s_sge[0].addr = conn->c_xmit_rm->m_rs->rs_user_addr; send->s_sge[0].length = conn->c_xmit_rm->m_rs->rs_user_bytes; send->s_sge[0].lkey = ic->i_sends[fr_pos].s_mr->lkey; } rdsdebug("send %p wr %p num_sge %u next %p\n", send, - &send->s_wr, send->s_wr.num_sge, send->s_wr.next); + &send->s_rdma_wr, + send->s_rdma_wr.wr.num_sge, + send->s_rdma_wr.wr.next); prev = send; if (++send == &ic->i_sends[ic->i_send_ring.w_nr]) @@ -934,7 +932,7 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) /* if we finished the message then send completion owns it */ if (scat == &op->op_sg[op->op_count]) - first->s_wr.send_flags = IB_SEND_SIGNALED; + first->s_rdma_wr.wr.send_flags = IB_SEND_SIGNALED; if (i < work_alloc) { rds_iw_ring_unalloc(&ic->i_send_ring, work_alloc - i); @@ -948,16 +946,20 @@ int rds_iw_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) * fastreg_mr (or possibly a dma_mr) */ if (!op->op_write) { - rds_iw_build_send_fastreg(rds_iwdev, ic, &ic->i_sends[fr_pos], - op->op_count, sent, conn->c_xmit_rm->m_rs->rs_user_addr); + ret = rds_iw_build_send_reg(&ic->i_sends[fr_pos], + &op->op_sg[0], sg_nents); + if (ret) { + printk(KERN_WARNING "RDS/IW: failed to reg send mem\n"); + goto out; + } work_alloc++; } - failed_wr = &first->s_wr; - ret = ib_post_send(ic->i_cm_id->qp, &first->s_wr, &failed_wr); + failed_wr = &first->s_rdma_wr.wr; + ret = ib_post_send(ic->i_cm_id->qp, &first->s_rdma_wr.wr, &failed_wr); rdsdebug("ic %p first %p (wr %p) ret %d wr %p\n", ic, - first, &first->s_wr, ret, failed_wr); - BUG_ON(failed_wr != &first->s_wr); + first, &first->s_rdma_wr, ret, failed_wr); + BUG_ON(failed_wr != &first->s_rdma_wr.wr); if (ret) { printk(KERN_WARNING "RDS/IW: rdma ib_post_send to %pI4 " "returned %d\n", &conn->c_faddr, ret); diff --git a/net/rds/rdma_transport.c b/net/rds/rdma_transport.c index b9b40af5345b..9c1fed81bf0f 100644 --- a/net/rds/rdma_transport.c +++ b/net/rds/rdma_transport.c @@ -142,8 +142,8 @@ static int rds_rdma_listen_init(void) struct rdma_cm_id *cm_id; int ret; - cm_id = rdma_create_id(rds_rdma_cm_event_handler, NULL, RDMA_PS_TCP, - IB_QPT_RC); + cm_id = rdma_create_id(&init_net, rds_rdma_cm_event_handler, NULL, + RDMA_PS_TCP, IB_QPT_RC); if (IS_ERR(cm_id)) { ret = PTR_ERR(cm_id); printk(KERN_ERR "RDS/RDMA: failed to setup listener, " |