diff --git a/configure.ac b/configure.ac
index aa4dd1ee..ac334cf9 100755
--- a/configure.ac
+++ b/configure.ac
@@ -393,6 +393,11 @@ if [test $HAVE_IBV_WR_API = yes]; then
 	if [test $HAVE_RDMA_WRITE_SRD = yes]; then
 		AC_DEFINE([HAVE_SRD_WITH_RDMA_WRITE], [1], [Have SRD with RDMA write support])
 	fi
+	AC_TRY_LINK([#include <infiniband/efadv.h>],
+		    [int x = EFADV_DEVICE_ATTR_CAPS_UNSOLICITED_WRITE_RECV;], [HAVE_UNSOLICITED_WRITE_RECV_SRD=yes], [HAVE_UNSOLICITED_WRITE_RECV_SRD=no])
+	if [test $HAVE_UNSOLICITED_WRITE_RECV_SRD = yes]; then
+		AC_DEFINE([HAVE_SRD_WITH_UNSOLICITED_WRITE_RECV], [1], [Have SRD with unsolicited RDMA write with imm. support])
+	fi
 else
 	AC_CHECK_LIB([efa], [efadv_create_driver_qp], [HAVE_SRD=yes], [HAVE_SRD=no])
 fi
diff --git a/src/perftest_parameters.c b/src/perftest_parameters.c
index 766adfa4..6c0bd568 100755
--- a/src/perftest_parameters.c
+++ b/src/perftest_parameters.c
@@ -645,7 +645,12 @@ static void usage(const char *argv0, VerbType verb, TestType tst, int connection
 
 	if ((tst == LAT || tst == BW) && verb == WRITE) {
 		printf("      --write_with_imm ");
-		printf(" use write-with-immediate verb instead of write\n");
+		printf(" Use write-with-immediate verb instead of write\n");
+
+		#ifdef HAVE_SRD_WITH_UNSOLICITED_WRITE_RECV
+		printf("      --unsolicited_write ");
+		printf(" Use unsolicited receive for write-with-immediate\n");
+		#endif
 	}
 
 	putchar('\n');
@@ -883,6 +888,7 @@ static void init_perftest_params(struct perftest_parameters *user_param)
 	user_param->source_ip		= NULL;
 	user_param->has_source_ip	= 0;
 	user_param->use_write_with_imm	= 0;
+	user_param->use_unsolicited_write = 0;
 	user_param->congest_type	= OFF;
 	user_param->no_lock		= OFF;
 }
@@ -1617,6 +1623,19 @@ static void force_dependecies(struct perftest_parameters *user_param)
 		user_param->cq_mod = 1;
 	}
 
+	if (user_param->use_unsolicited_write) {
+		if (user_param->connection_type != SRD) {
+			printf(RESULT_LINE);
+			fprintf(stderr, " Unsolicited write receive is supported only for SRD\n");
+			exit(1);
+		}
+		if (user_param->verb != WRITE_IMM) {
+			printf(RESULT_LINE);
+			fprintf(stderr, " Unsolicited write receive can only be used with write-with-immediate\n");
+			exit(1);
+		}
+	}
+
 	if ((user_param->use_srq && (user_param->tst == LAT || user_param->machine == SERVER || user_param->duplex == ON)) || user_param->use_xrc)
 		user_param->srq_exists = 1;
 
@@ -2323,6 +2342,9 @@ int parser(struct perftest_parameters *user_param,char *argv[], int argc)
 	static int recv_post_list_flag = 0;
 	static int payload_flag = 0;
 	static int use_write_with_imm_flag = 0;
+	#ifdef HAVE_SRD_WITH_UNSOLICITED_WRITE_RECV
+	static int unsolicited_write_flag = 0;
+	#endif
 	#ifdef HAVE_DCS
 	static int log_dci_streams_flag = 0;
 	static int log_active_dci_streams_flag = 0;
@@ -2506,6 +2528,9 @@ int parser(struct perftest_parameters *user_param,char *argv[], int argc)
 			#endif
 			{.name = "bind_source_ip", .has_arg = 1, .flag = &source_ip_flag, .val = 1},
 			{.name = "write_with_imm", .has_arg = 0, .flag = &use_write_with_imm_flag, .val = 1 },
+			#ifdef HAVE_SRD_WITH_UNSOLICITED_WRITE_RECV
+			{.name = "unsolicited_write", .has_arg = 0, .flag = &unsolicited_write_flag, .val = 1 },
+			#endif
 			{0}
 		};
 		if (!duplicates_checker) {
@@ -3146,6 +3171,12 @@ int parser(struct perftest_parameters *user_param,char *argv[], int argc)
 					user_param->verb = WRITE_IMM;
 					use_write_with_imm_flag = 0;
 				}
+				#ifdef HAVE_SRD_WITH_UNSOLICITED_WRITE_RECV
+				if (unsolicited_write_flag) {
+					user_param->use_unsolicited_write = 1;
+					unsolicited_write_flag = 0;
+				}
+				#endif
 				break;
 			default:
 				  fprintf(stderr," Invalid Command or flag.\n");
diff --git a/src/perftest_parameters.h b/src/perftest_parameters.h
index 5a774f0c..fa37af74 100755
--- a/src/perftest_parameters.h
+++ b/src/perftest_parameters.h
@@ -639,6 +639,7 @@ struct perftest_parameters {
 	int 				has_source_ip;
 	int 			ah_allocated;
 	int				use_write_with_imm;
+	int				use_unsolicited_write;
 };
 
 struct report_options {
diff --git a/src/perftest_resources.c b/src/perftest_resources.c
index 814ffdb0..1cb2defc 100755
--- a/src/perftest_resources.c
+++ b/src/perftest_resources.c
@@ -2434,6 +2434,10 @@ struct ibv_qp* ctx_qp_create(struct pingpong_context *ctx,
 		#ifdef HAVE_SRD
 		#ifdef HAVE_IBV_WR_API
 		efa_attr.driver_qp_type = EFADV_QP_DRIVER_TYPE_SRD;
+		#ifdef HAVE_SRD_WITH_UNSOLICITED_WRITE_RECV
+		if (user_param->use_unsolicited_write)
+			efa_attr.flags |= EFADV_QP_FLAGS_UNSOLICITED_WRITE_RECV;
+		#endif
 		qp = efadv_create_qp_ex(ctx->context, &attr_ex,
 					&efa_attr, sizeof(efa_attr));
 		#else
@@ -3800,7 +3804,7 @@ int run_iter_bw_server(struct pingpong_context *ctx, struct perftest_parameters
 					}
 					//coverity[uninit_use]
 					if ((user_param->test_type==DURATION || posted_per_qp[wc_id] + user_param->recv_post_list <= user_param->iters) &&
-							unused_recv_for_qp[wc_id] >= user_param->recv_post_list) {
+					    unused_recv_for_qp[wc_id] >= user_param->recv_post_list && !user_param->use_unsolicited_write) {
 						if (user_param->use_srq) {
 							if (ibv_post_srq_recv(ctx->srq, &ctx->rwr[wc_id * user_param->recv_post_list], &bad_wr_recv)) {
 								fprintf(stderr, "Couldn't post recv SRQ. QP = %d: counter=%lu\n", wc_id,rcnt);
@@ -4087,7 +4091,7 @@ int run_iter_bw_infinitely_server(struct pingpong_context *ctx, struct perftest_
 				}
 				user_param->iters++;
 				unused_recv_for_qp[wc[i].wr_id]++;
-				if (unused_recv_for_qp[wc[i].wr_id] >= user_param->recv_post_list) {
+				if (unused_recv_for_qp[wc[i].wr_id] >= user_param->recv_post_list && !user_param->use_unsolicited_write) {
 					if (user_param->use_srq) {
 						if (ibv_post_srq_recv(ctx->srq, &ctx->rwr[wc[i].wr_id * user_param->recv_post_list],&bad_wr_recv)) {
 							fprintf(stderr, "Couldn't post recv SRQ. QP = %d:\n",(int)wc[i].wr_id);
@@ -4341,7 +4345,7 @@ int run_iter_bi(struct pingpong_context *ctx,
 				}
 
 				if ((user_param->test_type==DURATION || posted_per_qp[wc[i].wr_id] + user_param->recv_post_list <= user_param->iters) &&
-						unused_recv_for_qp[wc[i].wr_id] >= user_param->recv_post_list) {
+				    unused_recv_for_qp[wc[i].wr_id] >= user_param->recv_post_list && !user_param->use_unsolicited_write) {
 					if (user_param->use_srq) {
 						if (ibv_post_srq_recv(ctx->srq, &ctx->rwr[wc[i].wr_id * user_param->recv_post_list],&bad_wr_recv)) {
 							fprintf(stderr, "Couldn't post recv SRQ. QP = %d: counter=%d\n",(int)wc[i].wr_id,(int)totrcnt);
@@ -4685,7 +4689,8 @@ int run_iter_lat_write_imm(struct pingpong_context *ctx,struct perftest_paramete
 				 * is enough space in the rx_depth,
 				 * post that you received a packet.
 				 */
-				if (user_param->test_type == DURATION || (rcnt + size_per_qp <= user_param->iters)) {
+				if ((user_param->test_type == DURATION || (rcnt + size_per_qp <= user_param->iters)) &&
+				    !user_param->use_unsolicited_write) {
 					if (user_param->use_srq) {
 						if (ibv_post_srq_recv(ctx->srq, &ctx->rwr[wc.wr_id], &bad_wr_recv)) {
 							fprintf(stderr, "Couldn't post recv SRQ. QP = %d: counter=%lu\n",(int)wc.wr_id, rcnt);
diff --git a/src/write_bw.c b/src/write_bw.c
index 1d3109ad..21d88dd5 100755
--- a/src/write_bw.c
+++ b/src/write_bw.c
@@ -301,7 +301,8 @@ int main(int argc, char *argv[])
 			if (user_param.machine == CLIENT || user_param.duplex)
 				ctx_set_send_wqes(&ctx,&user_param,rem_dest);
 
-			if (user_param.verb == WRITE_IMM && (user_param.machine == SERVER || user_param.duplex)) {
+			if (user_param.verb == WRITE_IMM && !user_param.use_unsolicited_write &&
+			    (user_param.machine == SERVER || user_param.duplex)) {
 				if (ctx_set_recv_wqes(&ctx,&user_param)) {
 					fprintf(stderr," Failed to post receive recv_wqes\n");
 					goto free_mem;
diff --git a/src/write_lat.c b/src/write_lat.c
index 782eb706..0e618253 100755
--- a/src/write_lat.c
+++ b/src/write_lat.c
@@ -262,10 +262,12 @@ int main(int argc, char *argv[])
 			user_param.size = (uint64_t)1 << i;
 
 			if (user_param.verb == WRITE_IMM) {
-				/* Post receive recv_wqes fo current message size */
-				if (ctx_set_recv_wqes(&ctx,&user_param)) {
-					fprintf(stderr," Failed to post receive recv_wqes\n");
-					goto free_mem;
+				if (!user_param.use_unsolicited_write) {
+					/* Post receive recv_wqes fo current message size */
+					if (ctx_set_recv_wqes(&ctx,&user_param)) {
+						fprintf(stderr," Failed to post receive recv_wqes\n");
+						goto free_mem;
+					}
 				}
 
 				/* Sync between the client and server so the client won't send packets