[dpdk-dev] [PATCH 2/2] pcap: Fill in if_index field for rte_eth_dev_info_get() calls

[Mats Liljegren <liljegren.mats2@gmail.com>]

Signed-off-by: Mats Liljegren <mats.liljegren@enea.com>
---
 lib/librte_pmd_pcap/rte_eth_pcap.c | 39 ++++++++++++++++++++++++++++++--------
 lib/librte_pmd_pcap/rte_eth_pcap.h |  6 ++++--
 2 files changed, 35 insertions(+), 10 deletions(-)

diff --git a/lib/librte_pmd_pcap/rte_eth_pcap.c
b/lib/librte_pmd_pcap/rte_eth_pcap.c
index 87d1306..ebd16f3 100644
--- a/lib/librte_pmd_pcap/rte_eth_pcap.c
+++ b/lib/librte_pmd_pcap/rte_eth_pcap.c
@@ -86,6 +86,8 @@ struct pmd_internals {
        unsigned nb_rx_queues;
        unsigned nb_tx_queues;

+       int if_index;
+
        struct pcap_rx_queue rx_queue[RTE_PMD_RING_MAX_RX_RINGS];
        struct pcap_tx_queue tx_queue[RTE_PMD_RING_MAX_TX_RINGS];
 };
@@ -300,6 +302,7 @@ eth_dev_info(struct rte_eth_dev *dev,
 {
        struct pmd_internals *internals = dev->data->dev_private;
        dev_info->driver_name = drivername;
+       dev_info->if_index = internals->if_index;
        dev_info->max_mac_addrs = 1;
        dev_info->max_rx_pktlen = (uint32_t) -1;
        dev_info->max_rx_queues = (uint16_t)internals->nb_rx_queues;
@@ -543,10 +546,19 @@ rte_pmd_init_internals(const unsigned nb_rx_queues,
                const unsigned nb_tx_queues,
                const unsigned numa_node,
                struct pmd_internals **internals,
-               struct rte_eth_dev **eth_dev)
+               struct rte_eth_dev **eth_dev,
+               struct args_dict *dict)
 {
        struct rte_eth_dev_data *data = NULL;
        struct rte_pci_device *pci_dev = NULL;
+       unsigned k_idx;
+       struct key_value *pair;
+
+       for (k_idx = 0; k_idx < dict->index; k_idx++) {
+               pair = &dict->pairs[k_idx];
+               if (strstr(pair->key, ETH_PCAP_IFACE_ARG) != NULL)
+                       break;
+       }

        RTE_LOG(INFO, PMD,
                        "Creating pcap-backed ethdev on numa socket
%u\n", numa_node);
@@ -583,6 +595,15 @@ rte_pmd_init_internals(const unsigned nb_rx_queues,
        (*internals)->nb_rx_queues = nb_rx_queues;
        (*internals)->nb_tx_queues = nb_tx_queues;

+       if (k_idx == dict->index)
+               (*internals)->if_index = -1;
+       else
+               (*internals)->if_index = if_nametoindex(pair->value);
+
+       /* if_nametoindex() uses 0 as error report value, translate to -1 */
+       if ((*internals)->if_index == 0)
+               (*internals)->if_index = -1;
+
        pci_dev->numa_node = numa_node;

        data->dev_private = *internals;
@@ -612,7 +633,8 @@ rte_eth_from_pcaps_n_dumpers(pcap_t * const rx_queues[],
                const unsigned nb_rx_queues,
                pcap_dumper_t * const tx_queues[],
                const unsigned nb_tx_queues,
-               const unsigned numa_node)
+               const unsigned numa_node,
+               struct args_dict *dict)
 {
        struct pmd_internals *internals = NULL;
        struct rte_eth_dev *eth_dev = NULL;
@@ -625,7 +647,7 @@ rte_eth_from_pcaps_n_dumpers(pcap_t * const rx_queues[],
                return -1;

        if (rte_pmd_init_internals(nb_rx_queues, nb_tx_queues, numa_node,
-                       &internals, &eth_dev) < 0)
+                       &internals, &eth_dev, dict) < 0)
                return -1;

        for (i = 0; i < nb_rx_queues; i++) {
@@ -646,7 +668,8 @@ rte_eth_from_pcaps(pcap_t * const rx_queues[],
                const unsigned nb_rx_queues,
                pcap_t * const tx_queues[],
                const unsigned nb_tx_queues,
-               const unsigned numa_node)
+               const unsigned numa_node,
+               struct args_dict *dict)
 {
        struct pmd_internals *internals = NULL;
        struct rte_eth_dev *eth_dev = NULL;
@@ -659,7 +682,7 @@ rte_eth_from_pcaps(pcap_t * const rx_queues[],
                return -1;

        if (rte_pmd_init_internals(nb_rx_queues, nb_tx_queues, numa_node,
-                       &internals, &eth_dev) < 0)
+                       &internals, &eth_dev, dict) < 0)
                return -1;

        for (i = 0; i < nb_rx_queues; i++) {
@@ -707,7 +730,7 @@ rte_pmd_pcap_init(const char *name, const char *params)
                if (ret < 0)
                        return -1;

-               return rte_eth_from_pcaps(pcaps.pcaps, 1, pcaps.pcaps,
1, numa_node);
+               return rte_eth_from_pcaps(pcaps.pcaps, 1, pcaps.pcaps,
1, numa_node, &dict);
        }

        /*
@@ -748,10 +771,10 @@ rte_pmd_pcap_init(const char *name, const char *params)

        if (using_dumpers)
                return rte_eth_from_pcaps_n_dumpers(pcaps.pcaps,
pcaps.num_of_rx,
-                               dumpers.dumpers, dumpers.num_of_tx, numa_node);
+                               dumpers.dumpers, dumpers.num_of_tx,
numa_node, &dict);

        return rte_eth_from_pcaps(pcaps.pcaps, pcaps.num_of_rx, dumpers.pcaps,
-                       dumpers.num_of_tx, numa_node);
+                       dumpers.num_of_tx, numa_node, &dict);

 }

diff --git a/lib/librte_pmd_pcap/rte_eth_pcap.h
b/lib/librte_pmd_pcap/rte_eth_pcap.h
index 368ed88..a0f409a 100644
--- a/lib/librte_pmd_pcap/rte_eth_pcap.h
+++ b/lib/librte_pmd_pcap/rte_eth_pcap.h
@@ -51,13 +51,15 @@ int rte_eth_from_pcaps(pcap_t * const rx_queues[],
                const unsigned nb_rx_queues,
                pcap_t * const tx_queues[],
                const unsigned nb_tx_queues,
-               const unsigned numa_node);
+               const unsigned numa_node,
+               struct args_dict *dict);

 int rte_eth_from_pcaps_n_dumpers(pcap_t * const rx_queues[],
                const unsigned nb_rx_queues,
                pcap_dumper_t * const tx_queues[],
                const unsigned nb_tx_queues,
-               const unsigned numa_node);
+               const unsigned numa_node,
+               struct args_dict *dict);

 /**
  * For use by the EAL only. Called as part of EAL init to set up any dummy NICs
-- 
1.8.3.2