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Added --enable-num_sge_zero in configure.ac to allow for using num_sge=0 for Write with IMM if the vendor supports it #388

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Merged
sshaulnv merged 1 commit into from
Apr 15, 2026
+10 −1
Merged

Added --enable-num_sge_zero in configure.ac to allow for using num_sge=0 for Write with IMM if the vendor supports it #388

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5 changes: 5 additions & 0 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,11 @@ AS_IF([test "x$enable_cq_ex" = "xno"],
[USE_CQ_EX=no],
[USE_CQ_EX=yes])

AC_ARG_ENABLE([num_sge_zero],
[AS_HELP_STRING([--enable-num_sge_zero], [Allows using num_sge=0 with RDMA Write With IMM verb])],
[AC_DEFINE([HAVE_NUM_SGE_ZERO], [1], [Use num_sge=0 with RDMA Write With IMM])],
[])

AC_PREFIX_DEFAULT("/usr")

AC_PROG_CC
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6 changes: 5 additions & 1 deletion src/perftest_resources.c
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Expand Up @@ -4099,11 +4099,15 @@ int ctx_set_recv_wqes(struct pingpong_context *ctx,struct perftest_parameters *u
}
}

#ifdef HAVE_NUM_SGE_ZERO
// Setting num_sge=0 is supported by the vendor and using it for WRITE_IMM verb.
if (user_param->verb == WRITE_IMM) {
ctx->rwr[i * user_param->recv_post_list + j].sg_list = NULL;
ctx->rwr[i * user_param->recv_post_list + j].num_sge = 0;
}
else {
else
#endif
{
ctx->rwr[i * user_param->recv_post_list + j].sg_list = &ctx->recv_sge_list[i * user_param->recv_post_list + j];
ctx->rwr[i * user_param->recv_post_list + j].num_sge = MAX_RECV_SGE;
}
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