diff options
Diffstat (limited to '')
| -rw-r--r-- | net/smc/smc_ib.c | 45 |
1 files changed, 38 insertions, 7 deletions
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c index a3e2d3b89568..854772dd52fd 100644 --- a/net/smc/smc_ib.c +++ b/net/smc/smc_ib.c @@ -671,6 +671,7 @@ int smc_ib_create_queue_pair(struct smc_link *lnk) .max_recv_wr = SMC_WR_BUF_CNT * 3, .max_send_sge = SMC_IB_MAX_SEND_SGE, .max_recv_sge = sges_per_buf, + .max_inline_data = 0, }, .sq_sig_type = IB_SIGNAL_REQ_WR, .qp_type = IB_QPT_RC, @@ -697,7 +698,7 @@ static int smc_ib_map_mr_sg(struct smc_buf_desc *buf_slot, u8 link_idx) int sg_num; /* map the largest prefix of a dma mapped SG list */ - sg_num = ib_map_mr_sg(buf_slot->mr_rx[link_idx], + sg_num = ib_map_mr_sg(buf_slot->mr[link_idx], buf_slot->sgt[link_idx].sgl, buf_slot->sgt[link_idx].orig_nents, &offset, PAGE_SIZE); @@ -709,25 +710,49 @@ static int smc_ib_map_mr_sg(struct smc_buf_desc *buf_slot, u8 link_idx) int smc_ib_get_memory_region(struct ib_pd *pd, int access_flags, struct smc_buf_desc *buf_slot, u8 link_idx) { - if (buf_slot->mr_rx[link_idx]) + if (buf_slot->mr[link_idx]) return 0; /* already done */ - buf_slot->mr_rx[link_idx] = + buf_slot->mr[link_idx] = ib_alloc_mr(pd, IB_MR_TYPE_MEM_REG, 1 << buf_slot->order); - if (IS_ERR(buf_slot->mr_rx[link_idx])) { + if (IS_ERR(buf_slot->mr[link_idx])) { int rc; - rc = PTR_ERR(buf_slot->mr_rx[link_idx]); - buf_slot->mr_rx[link_idx] = NULL; + rc = PTR_ERR(buf_slot->mr[link_idx]); + buf_slot->mr[link_idx] = NULL; return rc; } - if (smc_ib_map_mr_sg(buf_slot, link_idx) != 1) + if (smc_ib_map_mr_sg(buf_slot, link_idx) != + buf_slot->sgt[link_idx].orig_nents) return -EINVAL; return 0; } +bool smc_ib_is_sg_need_sync(struct smc_link *lnk, + struct smc_buf_desc *buf_slot) +{ + struct scatterlist *sg; + unsigned int i; + bool ret = false; + + /* for now there is just one DMA address */ + for_each_sg(buf_slot->sgt[lnk->link_idx].sgl, sg, + buf_slot->sgt[lnk->link_idx].nents, i) { + if (!sg_dma_len(sg)) + break; + if (dma_need_sync(lnk->smcibdev->ibdev->dma_device, + sg_dma_address(sg))) { + ret = true; + goto out; + } + } + +out: + return ret; +} + /* synchronize buffer usage for cpu access */ void smc_ib_sync_sg_for_cpu(struct smc_link *lnk, struct smc_buf_desc *buf_slot, @@ -736,6 +761,9 @@ void smc_ib_sync_sg_for_cpu(struct smc_link *lnk, struct scatterlist *sg; unsigned int i; + if (!(buf_slot->is_dma_need_sync & (1U << lnk->link_idx))) + return; + /* for now there is just one DMA address */ for_each_sg(buf_slot->sgt[lnk->link_idx].sgl, sg, buf_slot->sgt[lnk->link_idx].nents, i) { @@ -756,6 +784,9 @@ void smc_ib_sync_sg_for_device(struct smc_link *lnk, struct scatterlist *sg; unsigned int i; + if (!(buf_slot->is_dma_need_sync & (1U << lnk->link_idx))) + return; + /* for now there is just one DMA address */ for_each_sg(buf_slot->sgt[lnk->link_idx].sgl, sg, buf_slot->sgt[lnk->link_idx].nents, i) { |