rdma: Add support for the netlink extack

Add support in rdma for extack errors to be received
in userspace when sent from kernel, so now netlink extack
error messages sent from kernel would be printed for the
user.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>

2 files changed, 5 insertions, 20 deletions

diff --git a/rdma/rdma.h b/rdma/rdma.h
index fc8bcf09..470e11c8 100644
--- a/rdma/rdma.h
+++ b/rdma/rdma.h
@@ -19,6 +19,7 @@
 
 #include "list.h"
 #include "utils.h"
+#include "mnl_utils.h"
 #include "json_print.h"
 
 #define pr_err(args...) fprintf(stderr, ##args)
diff --git a/rdma/utils.c b/rdma/utils.c
index 2a201aa4..903a544c 100644
--- a/rdma/utils.c
+++ b/rdma/utils.c
@@ -666,18 +666,12 @@ int rd_send_msg(struct rd *rd)
 {
 	int ret;
 
-	rd->nl = mnl_socket_open(NETLINK_RDMA);
+	rd->nl = mnlu_socket_open(NETLINK_RDMA);
 	if (!rd->nl) {
 		pr_err("Failed to open NETLINK_RDMA socket\n");
 		return -ENODEV;
 	}
 
-	ret = mnl_socket_bind(rd->nl, 0, MNL_SOCKET_AUTOPID);
-	if (ret < 0) {
-		pr_err("Failed to bind socket with err %d\n", ret);
-		goto err;
-	}
-
 	ret = mnl_socket_sendto(rd->nl, rd->nlh, rd->nlh->nlmsg_len);
 	if (ret < 0) {
 		pr_err("Failed to send to socket with err %d\n", ret);
@@ -692,23 +686,13 @@ err:
 
 int rd_recv_msg(struct rd *rd, mnl_cb_t callback, void *data, unsigned int seq)
 {
-	int ret;
-	unsigned int portid;
 	char buf[MNL_SOCKET_BUFFER_SIZE];
+	int ret;
 
-	portid = mnl_socket_get_portid(rd->nl);
-	do {
-		ret = mnl_socket_recvfrom(rd->nl, buf, sizeof(buf));
-		if (ret <= 0)
-			break;
-
-		ret = mnl_cb_run(buf, ret, seq, portid, callback, data);
-	} while (ret > 0);
-
+	ret = mnlu_socket_recv_run(rd->nl, seq, buf, MNL_SOCKET_BUFFER_SIZE,
+				   callback, data);
 	if (ret < 0 && !rd->suppress_errors)
 		perror("error");
-
-	mnl_socket_close(rd->nl);
 	return ret;
 }