RDMA/ocrdma: Consider multiple SGES in case of DPP
While posting inline DPP data, we are not considering multiple sges.
Fix this.
Signed-off-by: Naresh Gottumukkala <bgottumukkala@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index f09a940..0504e73 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -1820,24 +1820,42 @@
memset(sge, 0, sizeof(*sge));
}
+static inline uint32_t ocrdma_sglist_len(struct ib_sge *sg_list, int num_sge)
+{
+ uint32_t total_len = 0, i;
+
+ for (i = 0; i < num_sge; i++)
+ total_len += sg_list[i].length;
+ return total_len;
+}
+
+
static int ocrdma_build_inline_sges(struct ocrdma_qp *qp,
struct ocrdma_hdr_wqe *hdr,
struct ocrdma_sge *sge,
struct ib_send_wr *wr, u32 wqe_size)
{
+ int i;
+ char *dpp_addr;
+
if (wr->send_flags & IB_SEND_INLINE && qp->qp_type != IB_QPT_UD) {
- if (wr->sg_list[0].length > qp->max_inline_data) {
+ hdr->total_len = ocrdma_sglist_len(wr->sg_list, wr->num_sge);
+ if (unlikely(hdr->total_len > qp->max_inline_data)) {
pr_err("%s() supported_len=0x%x,\n"
" unspported len req=0x%x\n", __func__,
- qp->max_inline_data, wr->sg_list[0].length);
+ qp->max_inline_data, hdr->total_len);
return -EINVAL;
}
- memcpy(sge,
- (void *)(unsigned long)wr->sg_list[0].addr,
- wr->sg_list[0].length);
- hdr->total_len = wr->sg_list[0].length;
+ dpp_addr = (char *)sge;
+ for (i = 0; i < wr->num_sge; i++) {
+ memcpy(dpp_addr,
+ (void *)(unsigned long)wr->sg_list[i].addr,
+ wr->sg_list[i].length);
+ dpp_addr += wr->sg_list[i].length;
+ }
+
wqe_size += roundup(hdr->total_len, OCRDMA_WQE_ALIGN_BYTES);
- if (0 == wr->sg_list[0].length)
+ if (0 == hdr->total_len)
wqe_size += sizeof(struct ocrdma_sge);
hdr->cw |= (OCRDMA_TYPE_INLINE << OCRDMA_WQE_TYPE_SHIFT);
} else {