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authorNaresh Gottumukkala <bgottumukkala@emulex.com>2013-08-26 13:57:48 +0400
committerRoland Dreier <roland@purestorage.com>2013-09-03 08:18:44 +0400
commit117e6dd1c5c96ef1edd6e5def4dd9937d98cae94 (patch)
tree26c73a5fecf0701e6e468fd28f45b7581c100fce /drivers/infiniband
parentf24ceba6b6454f68f456981be2a337b6390d9aa0 (diff)
downloadlinux-117e6dd1c5c96ef1edd6e5def4dd9937d98cae94.tar.xz
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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_verbs.c32
1 files changed, 25 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index f09a9403b600..0504e7376f1e 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -1820,24 +1820,42 @@ static void ocrdma_build_sges(struct ocrdma_hdr_wqe *hdr,
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 {