The socket id of a port was computed in three places with
diverging copies of the same policy:

- init_config() and init_fwd_streams() duplicated the full policy
  (--port-numa-config, device socket id, first available socket,
  --socket-num);
- setup_attached_port() used only the device socket id and ignored
  --port-numa-config, --no-numa and --socket-num, so a hot-attached
  port could be keyed to a socket where no mbuf pool exists.

Move the policy into a single helper, port_socket_id(), and use it
in all three places.

Signed-off-by: Stephen Hemminger <[email protected]>
---
 app/test-pmd/testpmd.c | 69 +++++++++++++++++-------------------------
 1 file changed, 28 insertions(+), 41 deletions(-)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index b5dca03047..04f0e15bee 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -1740,6 +1740,31 @@ uma_socket_id(void)
               (unsigned int)SOCKET_ID_ANY : socket_num;
 }
 
+/*
+ * Socket id to use for a port: the socket its mbuf pools are created
+ * on and where its queue resources are placed.
+ */
+static unsigned int
+port_socket_id(portid_t pid)
+{
+       unsigned int socket_id;
+
+       if (!numa_support)
+               return uma_socket_id();
+
+       socket_id = port_numa[pid];
+       if (socket_id == NUMA_NO_CONFIG) {
+               socket_id = rte_eth_dev_socket_id(pid);
+               /*
+                * If socket_id is invalid,
+                * set to the first available socket.
+                */
+               if (check_socket_id(socket_id) < 0)
+                       socket_id = socket_ids[0];
+       }
+       return socket_id;
+}
+
 static void
 init_config(void)
 {
@@ -1774,25 +1799,8 @@ init_config(void)
        }
 
        RTE_ETH_FOREACH_DEV(pid) {
-               uint32_t socket_id;
-
-               if (numa_support) {
-                       socket_id = port_numa[pid];
-                       if (port_numa[pid] == NUMA_NO_CONFIG) {
-                               socket_id = rte_eth_dev_socket_id(pid);
-
-                               /*
-                                * if socket_id is invalid,
-                                * set to the first available socket.
-                                */
-                               if (check_socket_id(socket_id) < 0)
-                                       socket_id = socket_ids[0];
-                       }
-               } else {
-                       socket_id = uma_socket_id();
-               }
                /* Apply default TxRx configuration for all ports */
-               init_config_port_offloads(pid, socket_id);
+               init_config_port_offloads(pid, port_socket_id(pid));
        }
        /*
         * Create pools of mbuf.
@@ -1916,23 +1924,7 @@ init_fwd_streams(void)
                                nb_txq, port->dev_info.max_tx_queues);
                        return -1;
                }
-               if (numa_support) {
-                       if (port_numa[pid] != NUMA_NO_CONFIG)
-                               port->socket_id = port_numa[pid];
-                       else {
-                               port->socket_id = rte_eth_dev_socket_id(pid);
-
-                               /*
-                                * if socket_id is invalid,
-                                * set to the first available socket.
-                                */
-                               if (check_socket_id(port->socket_id) < 0)
-                                       port->socket_id = socket_ids[0];
-                       }
-               }
-               else {
-                       port->socket_id = uma_socket_id();
-               }
+               port->socket_id = port_socket_id(pid);
        }
 
        q = RTE_MAX(nb_rxq, nb_txq);
@@ -3604,14 +3596,9 @@ attach_port(char *identifier)
 static void
 setup_attached_port(portid_t pi)
 {
-       unsigned int socket_id;
        int ret;
 
-       socket_id = (unsigned)rte_eth_dev_socket_id(pi);
-       /* if socket_id is invalid, set to the first available socket. */
-       if (check_socket_id(socket_id) < 0)
-               socket_id = socket_ids[0];
-       reconfig(pi, socket_id);
+       reconfig(pi, port_socket_id(pi));
        ret = rte_eth_promiscuous_enable(pi);
        if (ret != 0)
                fprintf(stderr,
-- 
2.53.0

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