return false;
}
-static inline u32 rdma_rw_fr_page_list_len(struct ib_device *dev)
+static inline u32 rdma_rw_fr_page_list_len(struct ib_device *dev,
+ bool pi_support)
{
+ u32 max_pages;
+
+ if (pi_support)
+ max_pages = dev->attrs.max_pi_fast_reg_page_list_len;
+ else
+ max_pages = dev->attrs.max_fast_reg_page_list_len;
+
/* arbitrary limit to avoid allocating gigantic resources */
- return min_t(u32, dev->attrs.max_fast_reg_page_list_len, 256);
+ return min_t(u32, max_pages, 256);
+}
+
+static inline int rdma_rw_inv_key(struct rdma_rw_reg_ctx *reg)
+{
+ int count = 0;
+
+ if (reg->mr->need_inval) {
+ reg->inv_wr.opcode = IB_WR_LOCAL_INV;
+ reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey;
+ reg->inv_wr.next = ®->reg_wr.wr;
+ count++;
+ } else {
+ reg->inv_wr.next = NULL;
+ }
+
+ return count;
}
/* Caller must have zero-initialized *reg. */
struct rdma_rw_reg_ctx *reg, struct scatterlist *sg,
u32 sg_cnt, u32 offset)
{
- u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device);
+ u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device,
+ qp->integrity_en);
u32 nents = min(sg_cnt, pages_per_mr);
int count = 0, ret;
if (!reg->mr)
return -EAGAIN;
- if (reg->mr->need_inval) {
- reg->inv_wr.opcode = IB_WR_LOCAL_INV;
- reg->inv_wr.ex.invalidate_rkey = reg->mr->lkey;
- reg->inv_wr.next = ®->reg_wr.wr;
- count++;
- } else {
- reg->inv_wr.next = NULL;
- }
+ count += rdma_rw_inv_key(reg);
ret = ib_map_mr_sg(reg->mr, sg, nents, &offset, PAGE_SIZE);
if (ret < 0 || ret < nents) {
u64 remote_addr, u32 rkey, enum dma_data_direction dir)
{
struct rdma_rw_reg_ctx *prev = NULL;
- u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device);
+ u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device,
+ qp->integrity_en);
int i, j, ret = 0, count = 0;
ctx->nr_ops = (sg_cnt + pages_per_mr - 1) / pages_per_mr;
u64 remote_addr, u32 rkey, enum dma_data_direction dir)
{
struct ib_device *dev = qp->pd->device;
- u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device);
+ u32 pages_per_mr = rdma_rw_fr_page_list_len(qp->pd->device,
+ qp->integrity_en);
struct ib_rdma_wr *rdma_wr;
- struct ib_send_wr *prev_wr = NULL;
int count = 0, ret;
if (sg_cnt > pages_per_mr || prot_sg_cnt > pages_per_mr) {
- pr_err("SG count too large\n");
+ pr_err("SG count too large: sg_cnt=%d, prot_sg_cnt=%d, pages_per_mr=%d\n",
+ sg_cnt, prot_sg_cnt, pages_per_mr);
return -EINVAL;
}
return -ENOMEM;
sg_cnt = ret;
- ret = ib_dma_map_sg(dev, prot_sg, prot_sg_cnt, dir);
- if (!ret) {
- ret = -ENOMEM;
- goto out_unmap_sg;
+ if (prot_sg_cnt) {
+ ret = ib_dma_map_sg(dev, prot_sg, prot_sg_cnt, dir);
+ if (!ret) {
+ ret = -ENOMEM;
+ goto out_unmap_sg;
+ }
+ prot_sg_cnt = ret;
}
- prot_sg_cnt = ret;
ctx->type = RDMA_RW_SIG_MR;
ctx->nr_ops = 1;
- ctx->sig = kcalloc(1, sizeof(*ctx->sig), GFP_KERNEL);
- if (!ctx->sig) {
+ ctx->reg = kcalloc(1, sizeof(*ctx->reg), GFP_KERNEL);
+ if (!ctx->reg) {
ret = -ENOMEM;
goto out_unmap_prot_sg;
}
- ret = rdma_rw_init_one_mr(qp, port_num, &ctx->sig->data, sg, sg_cnt, 0);
- if (ret < 0)
- goto out_free_ctx;
- count += ret;
- prev_wr = &ctx->sig->data.reg_wr.wr;
-
- ret = rdma_rw_init_one_mr(qp, port_num, &ctx->sig->prot,
- prot_sg, prot_sg_cnt, 0);
- if (ret < 0)
- goto out_destroy_data_mr;
- count += ret;
-
- if (ctx->sig->prot.inv_wr.next)
- prev_wr->next = &ctx->sig->prot.inv_wr;
- else
- prev_wr->next = &ctx->sig->prot.reg_wr.wr;
- prev_wr = &ctx->sig->prot.reg_wr.wr;
-
- ctx->sig->sig_mr = ib_mr_pool_get(qp, &qp->sig_mrs);
- if (!ctx->sig->sig_mr) {
+ ctx->reg->mr = ib_mr_pool_get(qp, &qp->sig_mrs);
+ if (!ctx->reg->mr) {
ret = -EAGAIN;
- goto out_destroy_prot_mr;
+ goto out_free_ctx;
}
- if (ctx->sig->sig_mr->need_inval) {
- memset(&ctx->sig->sig_inv_wr, 0, sizeof(ctx->sig->sig_inv_wr));
+ count += rdma_rw_inv_key(ctx->reg);
- ctx->sig->sig_inv_wr.opcode = IB_WR_LOCAL_INV;
- ctx->sig->sig_inv_wr.ex.invalidate_rkey = ctx->sig->sig_mr->rkey;
+ memcpy(ctx->reg->mr->sig_attrs, sig_attrs, sizeof(struct ib_sig_attrs));
- prev_wr->next = &ctx->sig->sig_inv_wr;
- prev_wr = &ctx->sig->sig_inv_wr;
+ ret = ib_map_mr_sg_pi(ctx->reg->mr, sg, sg_cnt, NULL, prot_sg,
+ prot_sg_cnt, NULL, SZ_4K);
+ if (unlikely(ret)) {
+ pr_err("failed to map PI sg (%d)\n", sg_cnt + prot_sg_cnt);
+ goto out_destroy_sig_mr;
}
- ctx->sig->sig_wr.wr.opcode = IB_WR_REG_SIG_MR;
- ctx->sig->sig_wr.wr.wr_cqe = NULL;
- ctx->sig->sig_wr.wr.sg_list = &ctx->sig->data.sge;
- ctx->sig->sig_wr.wr.num_sge = 1;
- ctx->sig->sig_wr.access_flags = IB_ACCESS_LOCAL_WRITE;
- ctx->sig->sig_wr.sig_attrs = sig_attrs;
- ctx->sig->sig_wr.sig_mr = ctx->sig->sig_mr;
- if (prot_sg_cnt)
- ctx->sig->sig_wr.prot = &ctx->sig->prot.sge;
- prev_wr->next = &ctx->sig->sig_wr.wr;
- prev_wr = &ctx->sig->sig_wr.wr;
+ ctx->reg->reg_wr.wr.opcode = IB_WR_REG_MR_INTEGRITY;
+ ctx->reg->reg_wr.wr.wr_cqe = NULL;
+ ctx->reg->reg_wr.wr.num_sge = 0;
+ ctx->reg->reg_wr.wr.send_flags = 0;
+ ctx->reg->reg_wr.access = IB_ACCESS_LOCAL_WRITE;
+ if (rdma_protocol_iwarp(qp->device, port_num))
+ ctx->reg->reg_wr.access |= IB_ACCESS_REMOTE_WRITE;
+ ctx->reg->reg_wr.mr = ctx->reg->mr;
+ ctx->reg->reg_wr.key = ctx->reg->mr->lkey;
count++;
- ctx->sig->sig_sge.addr = 0;
- ctx->sig->sig_sge.length = ctx->sig->data.sge.length;
- if (sig_attrs->wire.sig_type != IB_SIG_TYPE_NONE)
- ctx->sig->sig_sge.length += ctx->sig->prot.sge.length;
+ ctx->reg->sge.addr = ctx->reg->mr->iova;
+ ctx->reg->sge.length = ctx->reg->mr->length;
+ if (sig_attrs->wire.sig_type == IB_SIG_TYPE_NONE)
+ ctx->reg->sge.length -= ctx->reg->mr->sig_attrs->meta_length;
- rdma_wr = &ctx->sig->data.wr;
- rdma_wr->wr.sg_list = &ctx->sig->sig_sge;
+ rdma_wr = &ctx->reg->wr;
+ rdma_wr->wr.sg_list = &ctx->reg->sge;
rdma_wr->wr.num_sge = 1;
rdma_wr->remote_addr = remote_addr;
rdma_wr->rkey = rkey;
rdma_wr->wr.opcode = IB_WR_RDMA_WRITE;
else
rdma_wr->wr.opcode = IB_WR_RDMA_READ;
- prev_wr->next = &rdma_wr->wr;
- prev_wr = &rdma_wr->wr;
+ ctx->reg->reg_wr.wr.next = &rdma_wr->wr;
count++;
return count;
-out_destroy_prot_mr:
- if (prot_sg_cnt)
- ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->sig->prot.mr);
-out_destroy_data_mr:
- ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->sig->data.mr);
+out_destroy_sig_mr:
+ ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr);
out_free_ctx:
- kfree(ctx->sig);
+ kfree(ctx->reg);
out_unmap_prot_sg:
- ib_dma_unmap_sg(dev, prot_sg, prot_sg_cnt, dir);
+ if (prot_sg_cnt)
+ ib_dma_unmap_sg(dev, prot_sg, prot_sg_cnt, dir);
out_unmap_sg:
ib_dma_unmap_sg(dev, sg, sg_cnt, dir);
return ret;
switch (ctx->type) {
case RDMA_RW_SIG_MR:
- rdma_rw_update_lkey(&ctx->sig->data, true);
- if (ctx->sig->prot.mr)
- rdma_rw_update_lkey(&ctx->sig->prot, true);
-
- ctx->sig->sig_mr->need_inval = true;
- ib_update_fast_reg_key(ctx->sig->sig_mr,
- ib_inc_rkey(ctx->sig->sig_mr->lkey));
- ctx->sig->sig_sge.lkey = ctx->sig->sig_mr->lkey;
-
- if (ctx->sig->data.inv_wr.next)
- first_wr = &ctx->sig->data.inv_wr;
- else
- first_wr = &ctx->sig->data.reg_wr.wr;
- last_wr = &ctx->sig->data.wr.wr;
- break;
case RDMA_RW_MR:
+ /* fallthrough */
for (i = 0; i < ctx->nr_ops; i++) {
rdma_rw_update_lkey(&ctx->reg[i],
ctx->reg[i].wr.wr.opcode !=
/**
* rdma_rw_ctx_destroy_signature - release all resources allocated by
- * rdma_rw_ctx_init_signature
+ * rdma_rw_ctx_signature_init
* @ctx: context to release
* @qp: queue pair to operate on
* @port_num: port num to which the connection is bound
if (WARN_ON_ONCE(ctx->type != RDMA_RW_SIG_MR))
return;
- ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->sig->data.mr);
- ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
+ ib_mr_pool_put(qp, &qp->sig_mrs, ctx->reg->mr);
+ kfree(ctx->reg);
- if (ctx->sig->prot.mr) {
- ib_mr_pool_put(qp, &qp->rdma_mrs, ctx->sig->prot.mr);
+ ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
+ if (prot_sg_cnt)
ib_dma_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir);
- }
-
- ib_mr_pool_put(qp, &qp->sig_mrs, ctx->sig->sig_mr);
- kfree(ctx->sig);
}
EXPORT_SYMBOL(rdma_rw_ctx_destroy_signature);
unsigned int mr_pages;
if (rdma_rw_can_use_mr(device, port_num))
- mr_pages = rdma_rw_fr_page_list_len(device);
+ mr_pages = rdma_rw_fr_page_list_len(device, false);
else
mr_pages = device->attrs.max_sge_rd;
return DIV_ROUND_UP(maxpages, mr_pages);
* we'll need two additional MRs for the registrations and the
* invalidation.
*/
- if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
- factor += 6; /* (inv + reg) * (data + prot + sig) */
- else if (rdma_rw_can_use_mr(dev, attr->port_num))
+ if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN ||
+ rdma_rw_can_use_mr(dev, attr->port_num))
factor += 2; /* inv + reg */
attr->cap.max_send_wr += factor * attr->cap.max_rdma_ctxs;
int rdma_rw_init_mrs(struct ib_qp *qp, struct ib_qp_init_attr *attr)
{
struct ib_device *dev = qp->pd->device;
- u32 nr_mrs = 0, nr_sig_mrs = 0;
+ u32 nr_mrs = 0, nr_sig_mrs = 0, max_num_sg = 0;
int ret = 0;
- if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN) {
+ if (attr->create_flags & IB_QP_CREATE_INTEGRITY_EN) {
nr_sig_mrs = attr->cap.max_rdma_ctxs;
- nr_mrs = attr->cap.max_rdma_ctxs * 2;
+ nr_mrs = attr->cap.max_rdma_ctxs;
+ max_num_sg = rdma_rw_fr_page_list_len(dev, true);
} else if (rdma_rw_can_use_mr(dev, attr->port_num)) {
nr_mrs = attr->cap.max_rdma_ctxs;
+ max_num_sg = rdma_rw_fr_page_list_len(dev, false);
}
if (nr_mrs) {
ret = ib_mr_pool_init(qp, &qp->rdma_mrs, nr_mrs,
IB_MR_TYPE_MEM_REG,
- rdma_rw_fr_page_list_len(dev));
+ max_num_sg, 0);
if (ret) {
pr_err("%s: failed to allocated %d MRs\n",
__func__, nr_mrs);
if (nr_sig_mrs) {
ret = ib_mr_pool_init(qp, &qp->sig_mrs, nr_sig_mrs,
- IB_MR_TYPE_SIGNATURE, 2);
+ IB_MR_TYPE_INTEGRITY, max_num_sg, max_num_sg);
if (ret) {
pr_err("%s: failed to allocated %d SIG MRs\n",
- __func__, nr_mrs);
+ __func__, nr_sig_mrs);
goto out_free_rdma_mrs;
}
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff