mbuf: replace data pointer by an offset
[dpdk.git] / lib / librte_pmd_pcap / rte_eth_pcap.c
index 51a0aa4..2ff1e77 100644 (file)
@@ -1,14 +1,14 @@
 /*-
  *   BSD LICENSE
- * 
+ *
  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
  *   Copyright(c) 2014 6WIND S.A.
  *   All rights reserved.
- * 
+ *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
  *   are met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  *       notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above copyright
@@ -18,7 +18,7 @@
  *     * Neither the name of Intel Corporation nor the names of its
  *       contributors may be used to endorse or promote products derived
  *       from this software without specific prior written permission.
- * 
+ *
  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 #include <rte_string_fns.h>
 #include <rte_cycles.h>
 #include <rte_kvargs.h>
+#include <rte_dev.h>
 
-#include "rte_eth_pcap.h"
+#include <net/if.h>
+
+#include <pcap.h>
 
 #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
 #define RTE_ETH_PCAP_SNAPLEN 4096
 #define RTE_ETH_PCAP_PROMISC 1
 #define RTE_ETH_PCAP_TIMEOUT -1
-#define RTE_ETH_PCAP_MBUFS 64
-#define ETH_PCAP_RX_PCAP_ARG   "rx_pcap"
-#define ETH_PCAP_TX_PCAP_ARG   "tx_pcap"
-#define ETH_PCAP_RX_IFACE_ARG  "rx_iface"
-#define ETH_PCAP_TX_IFACE_ARG  "tx_iface"
-#define ETH_PCAP_IFACE_ARG             "iface"
+#define ETH_PCAP_RX_PCAP_ARG  "rx_pcap"
+#define ETH_PCAP_TX_PCAP_ARG  "tx_pcap"
+#define ETH_PCAP_RX_IFACE_ARG "rx_iface"
+#define ETH_PCAP_TX_IFACE_ARG "tx_iface"
+#define ETH_PCAP_IFACE_ARG    "iface"
 
 static char errbuf[PCAP_ERRBUF_SIZE];
 static struct timeval start_time;
@@ -88,6 +90,8 @@ 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];
 };
@@ -135,7 +139,7 @@ eth_pcap_rx(void *queue,
                packet = pcap_next(pcap_q->pcap, &header);
                if (unlikely(packet == NULL))
                        break;
-               else 
+               else
                        mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
                if (unlikely(mbuf == NULL))
                        break;
@@ -147,14 +151,15 @@ eth_pcap_rx(void *queue,
 
                if (header.len <= buf_size) {
                        /* pcap packet will fit in the mbuf, go ahead and copy */
-                       rte_memcpy(mbuf->pkt.data, packet, header.len);
-                       mbuf->pkt.data_len = (uint16_t)header.len;
-                       mbuf->pkt.pkt_len = mbuf->pkt.data_len;
-                       bufs[i] = mbuf;
+                       rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
+                                       header.len);
+                       mbuf->data_len = (uint16_t)header.len;
+                       mbuf->pkt_len = mbuf->data_len;
+                       bufs[num_rx] = mbuf;
                        num_rx++;
                } else {
                        /* pcap packet will not fit in the mbuf, so drop packet */
-                       RTE_LOG(ERR, PMD, 
+                       RTE_LOG(ERR, PMD,
                                        "PCAP packet %d bytes will not fit in mbuf (%d bytes)\n",
                                        header.len, buf_size);
                        rte_pktmbuf_free(mbuf);
@@ -196,9 +201,10 @@ eth_pcap_tx_dumper(void *queue,
        for (i = 0; i < nb_pkts; i++) {
                mbuf = bufs[i];
                calculate_timestamp(&header.ts);
-               header.len = mbuf->pkt.data_len;
+               header.len = mbuf->data_len;
                header.caplen = header.len;
-               pcap_dump((u_char*) dumper_q->dumper, &header, mbuf->pkt.data);
+               pcap_dump((u_char *)dumper_q->dumper, &header,
+                               rte_pktmbuf_mtod(mbuf, void*));
                rte_pktmbuf_free(mbuf);
                num_tx++;
        }
@@ -233,10 +239,12 @@ eth_pcap_tx(void *queue,
 
        for (i = 0; i < nb_pkts; i++) {
                mbuf = bufs[i];
-               ret = pcap_sendpacket(tx_queue->pcap, (u_char*) mbuf->pkt.data,
-                               mbuf->pkt.data_len);
-               if(likely(!ret))
-                       num_tx++;
+               ret = pcap_sendpacket(tx_queue->pcap,
+                               rte_pktmbuf_mtod(mbuf, u_char *),
+                               mbuf->data_len);
+               if (unlikely(ret != 0))
+                       break;
+               num_tx++;
                rte_pktmbuf_free(mbuf);
        }
 
@@ -289,6 +297,7 @@ 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;
@@ -403,7 +412,7 @@ static struct eth_dev_ops ops = {
  * reference of it for use it later on.
  */
 static int
-open_rx_pcap(const char *value, void *extra_args)
+open_rx_pcap(const char *key __rte_unused, const char *value, void *extra_args)
 {
        unsigned i;
        const char *pcap_filename = value;
@@ -426,7 +435,7 @@ open_rx_pcap(const char *value, void *extra_args)
  * for use it later on.
  */
 static int
-open_tx_pcap(const char *value, void *extra_args)
+open_tx_pcap(const char *key __rte_unused, const char *value, void *extra_args)
 {
        unsigned i;
        const char *pcap_filename = value;
@@ -476,7 +485,7 @@ open_iface_live(const char *iface, pcap_t **pcap) {
  * Opens an interface for reading and writing
  */
 static inline int
-open_rx_tx_iface(const char *value, void *extra_args)
+open_rx_tx_iface(const char *key __rte_unused, const char *value, void *extra_args)
 {
        const char *iface = value;
        pcap_t **pcap = extra_args;
@@ -490,7 +499,7 @@ open_rx_tx_iface(const char *value, void *extra_args)
  * Opens a NIC for reading packets from it
  */
 static inline int
-open_rx_iface(const char *value, void *extra_args)
+open_rx_iface(const char *key __rte_unused, const char *value, void *extra_args)
 {
        unsigned i;
        const char *iface = value;
@@ -510,7 +519,7 @@ open_rx_iface(const char *value, void *extra_args)
  * Opens a NIC for writing packets to it
  */
 static inline int
-open_tx_iface(const char *value, void *extra_args)
+open_tx_iface(const char *key __rte_unused, const char *value, void *extra_args)
 {
        unsigned i;
        const char *iface = value;
@@ -528,14 +537,23 @@ open_tx_iface(const char *value, void *extra_args)
 
 
 static int
-rte_pmd_init_internals(const unsigned nb_rx_queues,
+rte_pmd_init_internals(const char *name, 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 rte_kvargs *kvlist)
 {
        struct rte_eth_dev_data *data = NULL;
        struct rte_pci_device *pci_dev = NULL;
+       unsigned k_idx;
+       struct rte_kvargs_pair *pair = NULL;
+
+       for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
+               pair = &kvlist->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);
@@ -543,20 +561,20 @@ rte_pmd_init_internals(const unsigned nb_rx_queues,
        /* now do all data allocation - for eth_dev structure, dummy pci driver
         * and internal (private) data
         */
-       data = rte_zmalloc_socket(NULL, sizeof(*data), 0, numa_node);
+       data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
        if (data == NULL)
                goto error;
 
-       pci_dev = rte_zmalloc_socket(NULL, sizeof(*pci_dev), 0, numa_node);
+       pci_dev = rte_zmalloc_socket(name, sizeof(*pci_dev), 0, numa_node);
        if (pci_dev == NULL)
                goto error;
 
-       *internals = rte_zmalloc_socket(NULL, sizeof(**internals), 0, numa_node);
+       *internals = rte_zmalloc_socket(name, sizeof(**internals), 0, numa_node);
        if (*internals == NULL)
                goto error;
 
        /* reserve an ethdev entry */
-       *eth_dev = rte_eth_dev_allocate();
+       *eth_dev = rte_eth_dev_allocate(name);
        if (*eth_dev == NULL)
                goto error;
 
@@ -572,6 +590,11 @@ rte_pmd_init_internals(const unsigned nb_rx_queues,
        (*internals)->nb_rx_queues = nb_rx_queues;
        (*internals)->nb_tx_queues = nb_tx_queues;
 
+       if (pair == NULL)
+               (*internals)->if_index = 0;
+       else
+               (*internals)->if_index = if_nametoindex(pair->value);
+
        pci_dev->numa_node = numa_node;
 
        data->dev_private = *internals;
@@ -596,12 +619,13 @@ rte_pmd_init_internals(const unsigned nb_rx_queues,
        return -1;
 }
 
-int
-rte_eth_from_pcaps_n_dumpers(pcap_t * const rx_queues[],
+static int
+rte_eth_from_pcaps_n_dumpers(const char *name, 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 rte_kvargs *kvlist)
 {
        struct pmd_internals *internals = NULL;
        struct rte_eth_dev *eth_dev = NULL;
@@ -613,8 +637,8 @@ rte_eth_from_pcaps_n_dumpers(pcap_t * const rx_queues[],
        if (tx_queues == NULL && nb_tx_queues > 0)
                return -1;
 
-       if (rte_pmd_init_internals(nb_rx_queues, nb_tx_queues, numa_node,
-                       &internals, &eth_dev) < 0)
+       if (rte_pmd_init_internals(name, nb_rx_queues, nb_tx_queues, numa_node,
+                       &internals, &eth_dev, kvlist) < 0)
                return -1;
 
        for (i = 0; i < nb_rx_queues; i++) {
@@ -630,12 +654,13 @@ rte_eth_from_pcaps_n_dumpers(pcap_t * const rx_queues[],
        return 0;
 }
 
-int
-rte_eth_from_pcaps(pcap_t * const rx_queues[],
+static int
+rte_eth_from_pcaps(const char *name, 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 rte_kvargs *kvlist)
 {
        struct pmd_internals *internals = NULL;
        struct rte_eth_dev *eth_dev = NULL;
@@ -647,8 +672,8 @@ rte_eth_from_pcaps(pcap_t * const rx_queues[],
        if (tx_queues == NULL && nb_tx_queues > 0)
                return -1;
 
-       if (rte_pmd_init_internals(nb_rx_queues, nb_tx_queues, numa_node,
-                       &internals, &eth_dev) < 0)
+       if (rte_pmd_init_internals(name, nb_rx_queues, nb_tx_queues, numa_node,
+                       &internals, &eth_dev, kvlist) < 0)
                return -1;
 
        for (i = 0; i < nb_rx_queues; i++) {
@@ -665,8 +690,8 @@ rte_eth_from_pcaps(pcap_t * const rx_queues[],
 }
 
 
-int
-rte_pmd_pcap_init(const char *name, const char *params)
+static int
+rte_pmd_pcap_devinit(const char *name, const char *params)
 {
        unsigned numa_node, using_dumpers = 0;
        int ret;
@@ -697,7 +722,8 @@ 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(name, pcaps.pcaps, 1, pcaps.pcaps, 1,
+                               numa_node, kvlist);
        }
 
        /*
@@ -737,11 +763,18 @@ rte_pmd_pcap_init(const char *name, const char *params)
                return -1;
 
        if (using_dumpers)
-               return rte_eth_from_pcaps_n_dumpers(pcaps.pcaps, pcaps.num_of_rx,
-                               dumpers.dumpers, dumpers.num_of_tx, numa_node);
+               return rte_eth_from_pcaps_n_dumpers(name, pcaps.pcaps, pcaps.num_of_rx,
+                               dumpers.dumpers, dumpers.num_of_tx, numa_node, kvlist);
 
-       return rte_eth_from_pcaps(pcaps.pcaps, pcaps.num_of_rx, dumpers.pcaps,
-                       dumpers.num_of_tx, numa_node);
+       return rte_eth_from_pcaps(name, pcaps.pcaps, pcaps.num_of_rx, dumpers.pcaps,
+                       dumpers.num_of_tx, numa_node, kvlist);
 
 }
 
+static struct rte_driver pmd_pcap_drv = {
+       .name = "eth_pcap",
+       .type = PMD_VDEV,
+       .init = rte_pmd_pcap_devinit,
+};
+
+PMD_REGISTER_DRIVER(pmd_pcap_drv);