rdma: Place PD parsing print routine into separate function

Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: David Ahern <dsahern@gmail.com>

diff --git a/rdma/res-pd.c b/rdma/res-pd.c
index 24ac7f1bd968b56027970fb323849ddfa36665db..3c9ffa4ea181e81c2378a5166c183d4f89a6d798 100644 (file)
--- a/rdma/res-pd.c
+++ b/rdma/res-pd.c
@@ -7,11 +7,95 @@
 #include "res.h"
 #include <inttypes.h>
 
+static int res_pd_line(struct rd *rd, const char *name, int idx,
+                      struct nlattr *nla_entry)
+{
+       uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;
+       struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
+       char *comm = NULL;
+       uint32_t ctxn = 0;
+       uint32_t pid = 0;
+       uint32_t pdn = 0;
+       uint64_t users;
+       int err;
+
+       err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
+       if (err != MNL_CB_OK)
+               return MNL_CB_ERROR;
+
+       if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
+           (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
+            !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
+               return MNL_CB_ERROR;
+       }
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
+               local_dma_lkey = mnl_attr_get_u32(
+                       nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
+
+       users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
+       if (rd_check_is_filtered(rd, "users", users))
+               goto out;
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
+               unsafe_global_rkey = mnl_attr_get_u32(
+                       nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
+               pid = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PID]);
+               comm = get_task_name(pid);
+       }
+
+       if (rd_check_is_filtered(rd, "pid", pid))
+               goto out;
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
+               ctxn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
+
+       if (rd_check_is_filtered(rd, "ctxn", ctxn))
+               goto out;
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
+               pdn = mnl_attr_get_u32(nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
+       if (rd_check_is_filtered(rd, "pdn", pdn))
+               goto out;
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
+               /* discard const from mnl_attr_get_str */
+               comm = (char *)mnl_attr_get_str(
+                       nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
+
+       if (rd->json_output)
+               jsonw_start_array(rd->jw);
+
+       print_dev(rd, idx, name);
+       if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
+               print_key(rd, "local_dma_lkey", local_dma_lkey);
+       res_print_uint(rd, "users", users);
+       if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
+               print_key(rd, "unsafe_global_rkey", unsafe_global_rkey);
+       res_print_uint(rd, "pid", pid);
+       print_comm(rd, comm, nla_line);
+       if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
+               res_print_uint(rd, "ctxn", ctxn);
+
+       if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
+               res_print_uint(rd, "pdn", pdn);
+
+       print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
+       newline(rd);
+
+out:   if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
+               free(comm);
+       return MNL_CB_OK;
+}
+
 int res_pd_parse_cb(const struct nlmsghdr *nlh, void *data)
 {
        struct nlattr *tb[RDMA_NLDEV_ATTR_MAX] = {};
        struct nlattr *nla_table, *nla_entry;
        struct rd *rd = data;
+       int ret = MNL_CB_OK;
        const char *name;
        uint32_t idx;
 
@@ -25,86 +109,10 @@ int res_pd_parse_cb(const struct nlmsghdr *nlh, void *data)
        nla_table = tb[RDMA_NLDEV_ATTR_RES_PD];
 
        mnl_attr_for_each_nested(nla_entry, nla_table) {
-               uint32_t local_dma_lkey = 0, unsafe_global_rkey = 0;
-               struct nlattr *nla_line[RDMA_NLDEV_ATTR_MAX] = {};
-               char *comm = NULL;
-               uint32_t ctxn = 0;
-               uint32_t pid = 0;
-               uint32_t pdn = 0;
-               uint64_t users;
-               int err;
-
-               err = mnl_attr_parse_nested(nla_entry, rd_attr_cb, nla_line);
-               if (err != MNL_CB_OK)
-                       return MNL_CB_ERROR;
-
-               if (!nla_line[RDMA_NLDEV_ATTR_RES_USECNT] ||
-                   (!nla_line[RDMA_NLDEV_ATTR_RES_PID] &&
-                    !nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])) {
-                       return MNL_CB_ERROR;
-               }
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
-                       local_dma_lkey = mnl_attr_get_u32(
-                               nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY]);
-
-               users = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_USECNT]);
-               if (rd_check_is_filtered(rd, "users", users))
-                       continue;
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
-                       unsafe_global_rkey = mnl_attr_get_u32(
-                               nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]);
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_PID]) {
-                       pid = mnl_attr_get_u32(
-                               nla_line[RDMA_NLDEV_ATTR_RES_PID]);
-                       comm = get_task_name(pid);
-               }
-
-               if (rd_check_is_filtered(rd, "pid", pid))
-                       continue;
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
-                       ctxn = mnl_attr_get_u32(
-                               nla_line[RDMA_NLDEV_ATTR_RES_CTXN]);
-
-               if (rd_check_is_filtered(rd, "ctxn", ctxn))
-                       continue;
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
-                       pdn = mnl_attr_get_u32(
-                               nla_line[RDMA_NLDEV_ATTR_RES_PDN]);
-               if (rd_check_is_filtered(rd, "pdn", pdn))
-                       continue;
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME])
-                       /* discard const from mnl_attr_get_str */
-                       comm = (char *)mnl_attr_get_str(
-                               nla_line[RDMA_NLDEV_ATTR_RES_KERN_NAME]);
-
-               if (rd->json_output)
-                       jsonw_start_array(rd->jw);
-
-               print_dev(rd, idx, name);
-               if (nla_line[RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY])
-                       print_key(rd, "local_dma_lkey", local_dma_lkey);
-               res_print_uint(rd, "users", users);
-               if (nla_line[RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY])
-                       print_key(rd, "unsafe_global_rkey", unsafe_global_rkey);
-               res_print_uint(rd, "pid", pid);
-               print_comm(rd, comm, nla_line);
-               if (nla_line[RDMA_NLDEV_ATTR_RES_CTXN])
-                       res_print_uint(rd, "ctxn", ctxn);
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_PDN])
-                       res_print_uint(rd, "pdn", pdn);
-
-               if (nla_line[RDMA_NLDEV_ATTR_RES_PID])
-                       free(comm);
-
-               print_driver_table(rd, nla_line[RDMA_NLDEV_ATTR_DRIVER]);
-               newline(rd);
+               ret = res_pd_line(rd, name, idx, nla_entry);
+
+               if (ret != MNL_CB_OK)
+                       break;
        }
-       return MNL_CB_OK;
+       return ret;
 }