From: Juhamatti Kuusisaari Date: Sat, 6 Oct 2018 00:49:59 +0000 (+0100) Subject: net/pcap: support physical interface MAC address X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=c9507cd0cada;p=dpdk.git net/pcap: support physical interface MAC address At the moment, PCAP interfaces use dummy MAC by default. This change adds support for selecting PCAP physical interface MAC with phy_mac=1 devarg. This allows to setup packet flows using the physical interface MAC. Signed-off-by: Juhamatti Kuusisaari Signed-off-by: Ferruh Yigit --- diff --git a/doc/guides/nics/pcap_ring.rst b/doc/guides/nics/pcap_ring.rst index 879e5430f8..c1ef9196bf 100644 --- a/doc/guides/nics/pcap_ring.rst +++ b/doc/guides/nics/pcap_ring.rst @@ -96,6 +96,16 @@ The different stream types are: iface=eth0 +Runtime Config Options +^^^^^^^^^^^^^^^^^^^^^^ + +- Use PCAP interface physical MAC + + In case ``iface=`` configuration is set, user may want to use the selected interface's physical MAC + address. This can be done with a ``devarg`` ``phy_mac``, for example:: + + --vdev 'net_pcap0,iface=eth0,phy_mac=1' + Examples of Usage ^^^^^^^^^^^^^^^^^ diff --git a/doc/guides/rel_notes/release_18_11.rst b/doc/guides/rel_notes/release_18_11.rst index 5a5af0a5cf..a34caca904 100644 --- a/doc/guides/rel_notes/release_18_11.rst +++ b/doc/guides/rel_notes/release_18_11.rst @@ -107,6 +107,10 @@ New Features * Support for runtime Rx and Tx queues setup. * Support multicast MAC address set. +* **Added a devarg to use PCAP interface physical MAC address.** + A new devarg ``phy_mac`` was introduced to allow users to use physical + MAC address of the selected PCAP interface. + * **Added Event Ethernet Tx Adapter.** Added event ethernet Tx adapter library that provides configuration and diff --git a/drivers/net/pcap/rte_eth_pcap.c b/drivers/net/pcap/rte_eth_pcap.c index 8736010f0d..51d4051166 100644 --- a/drivers/net/pcap/rte_eth_pcap.c +++ b/drivers/net/pcap/rte_eth_pcap.c @@ -7,6 +7,14 @@ #include #include +#include +#include +#include + +#if defined(RTE_EXEC_ENV_BSDAPP) +#include +#include +#endif #include @@ -17,6 +25,7 @@ #include #include #include +#include #define RTE_ETH_PCAP_SNAPSHOT_LEN 65535 #define RTE_ETH_PCAP_SNAPLEN ETHER_MAX_JUMBO_FRAME_LEN @@ -29,6 +38,7 @@ #define ETH_PCAP_RX_IFACE_IN_ARG "rx_iface_in" #define ETH_PCAP_TX_IFACE_ARG "tx_iface" #define ETH_PCAP_IFACE_ARG "iface" +#define ETH_PCAP_PHY_MAC_ARG "phy_mac" #define ETH_PCAP_ARG_MAXLEN 64 @@ -70,6 +80,7 @@ struct pmd_internals { struct ether_addr eth_addr; int if_index; int single_iface; + int phy_mac; }; struct pmd_devargs { @@ -80,6 +91,7 @@ struct pmd_devargs { const char *name; const char *type; } queue[RTE_PMD_PCAP_MAX_QUEUES]; + int phy_mac; }; static const char *valid_arguments[] = { @@ -89,6 +101,7 @@ static const char *valid_arguments[] = { ETH_PCAP_RX_IFACE_IN_ARG, ETH_PCAP_TX_IFACE_ARG, ETH_PCAP_IFACE_ARG, + ETH_PCAP_PHY_MAC_ARG, NULL }; @@ -859,6 +872,20 @@ open_tx_iface(const char *key, const char *value, void *extra_args) return open_iface(key, value, extra_args); } +static int +select_phy_mac(const char *key __rte_unused, const char *value, + void *extra_args) +{ + if (extra_args) { + const int phy_mac = atoi(value); + int *enable_phy_mac = extra_args; + + if (phy_mac) + *enable_phy_mac = 1; + } + return 0; +} + static struct rte_vdev_driver pmd_pcap_drv; static int @@ -894,6 +921,7 @@ pmd_init_internals(struct rte_vdev_device *vdev, (*internals)->eth_addr = (struct ether_addr) { .addr_bytes = { 0x02, 0x70, 0x63, 0x61, 0x70, iface_idx++ } }; + (*internals)->phy_mac = 0; data = (*eth_dev)->data; data->nb_rx_queues = (uint16_t)nb_rx_queues; data->nb_tx_queues = (uint16_t)nb_tx_queues; @@ -909,15 +937,96 @@ pmd_init_internals(struct rte_vdev_device *vdev, return 0; } +static int +eth_pcap_update_mac(const char *if_name, struct rte_eth_dev *eth_dev, + const unsigned int numa_node) +{ +#if defined(RTE_EXEC_ENV_LINUXAPP) + void *mac_addrs; + struct ifreq ifr; + int if_fd = socket(AF_INET, SOCK_DGRAM, 0); + + if (if_fd == -1) + return -1; + + rte_strscpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name)); + if (ioctl(if_fd, SIOCGIFHWADDR, &ifr)) { + close(if_fd); + return -1; + } + + mac_addrs = rte_zmalloc_socket(NULL, ETHER_ADDR_LEN, 0, numa_node); + if (!mac_addrs) { + close(if_fd); + return -1; + } + + PMD_LOG(INFO, "Setting phy MAC for %s", if_name); + eth_dev->data->mac_addrs = mac_addrs; + rte_memcpy(eth_dev->data->mac_addrs[0].addr_bytes, + ifr.ifr_hwaddr.sa_data, ETHER_ADDR_LEN); + + close(if_fd); + + return 0; + +#elif defined(RTE_EXEC_ENV_BSDAPP) + void *mac_addrs; + struct if_msghdr *ifm; + struct sockaddr_dl *sdl; + int mib[6]; + size_t len = 0; + char *buf; + + mib[0] = CTL_NET; + mib[1] = AF_ROUTE; + mib[2] = 0; + mib[3] = AF_LINK; + mib[4] = NET_RT_IFLIST; + mib[5] = if_nametoindex(if_name); + + if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0) + return -1; + + if (len == 0) + return -1; + + buf = rte_malloc(NULL, len, 0); + if (!buf) + return -1; + + if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) { + rte_free(buf); + return -1; + } + ifm = (struct if_msghdr *)buf; + sdl = (struct sockaddr_dl *)(ifm + 1); + + mac_addrs = rte_zmalloc_socket(NULL, ETHER_ADDR_LEN, 0, numa_node); + if (!mac_addrs) { + rte_free(buf); + return -1; + } + + PMD_LOG(INFO, "Setting phy MAC for %s", if_name); + eth_dev->data->mac_addrs = mac_addrs; + rte_memcpy(eth_dev->data->mac_addrs[0].addr_bytes, + LLADDR(sdl), ETHER_ADDR_LEN); + + rte_free(buf); + + return 0; +#else + return -1; +#endif +} + static int eth_from_pcaps_common(struct rte_vdev_device *vdev, struct pmd_devargs *rx_queues, const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues, const unsigned int nb_tx_queues, - struct rte_kvargs *kvlist, struct pmd_internals **internals, - struct rte_eth_dev **eth_dev) + struct pmd_internals **internals, struct rte_eth_dev **eth_dev) { - struct rte_kvargs_pair *pair = NULL; - unsigned int k_idx; unsigned int i; /* do some parameter checking */ @@ -949,17 +1058,6 @@ eth_from_pcaps_common(struct rte_vdev_device *vdev, snprintf(tx->type, sizeof(tx->type), "%s", queue->type); } - 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; - } - - if (pair == NULL) - (*internals)->if_index = 0; - else - (*internals)->if_index = if_nametoindex(pair->value); - return 0; } @@ -967,15 +1065,14 @@ static int eth_from_pcaps(struct rte_vdev_device *vdev, struct pmd_devargs *rx_queues, const unsigned int nb_rx_queues, struct pmd_devargs *tx_queues, const unsigned int nb_tx_queues, - struct rte_kvargs *kvlist, int single_iface, - unsigned int using_dumpers) + int single_iface, unsigned int using_dumpers) { struct pmd_internals *internals = NULL; struct rte_eth_dev *eth_dev = NULL; int ret; ret = eth_from_pcaps_common(vdev, rx_queues, nb_rx_queues, - tx_queues, nb_tx_queues, kvlist, &internals, ð_dev); + tx_queues, nb_tx_queues, &internals, ð_dev); if (ret < 0) return ret; @@ -983,6 +1080,18 @@ eth_from_pcaps(struct rte_vdev_device *vdev, /* store weather we are using a single interface for rx/tx or not */ internals->single_iface = single_iface; + if (single_iface) { + internals->if_index = if_nametoindex(rx_queues->queue[0].name); + + /* phy_mac arg is applied only only if "iface" devarg is provided */ + if (rx_queues->phy_mac) { + int ret = eth_pcap_update_mac(rx_queues->queue[0].name, + eth_dev, vdev->device.numa_node); + if (ret == 0) + internals->phy_mac = 1; + } + } + eth_dev->rx_pkt_burst = eth_pcap_rx; if (using_dumpers) @@ -1039,12 +1148,18 @@ pmd_pcap_probe(struct rte_vdev_device *dev) ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG, &open_rx_tx_iface, &pcaps); - if (ret < 0) goto free_kvlist; dumpers.queue[0] = pcaps.queue[0]; + ret = rte_kvargs_process(kvlist, ETH_PCAP_PHY_MAC_ARG, + &select_phy_mac, &pcaps.phy_mac); + if (ret < 0) + goto free_kvlist; + + dumpers.phy_mac = pcaps.phy_mac; + single_iface = 1; pcaps.num_of_queue = 1; dumpers.num_of_queue = 1; @@ -1089,7 +1204,7 @@ pmd_pcap_probe(struct rte_vdev_device *dev) create_eth: ret = eth_from_pcaps(dev, &pcaps, pcaps.num_of_queue, &dumpers, - dumpers.num_of_queue, kvlist, single_iface, is_tx_pcap); + dumpers.num_of_queue, single_iface, is_tx_pcap); free_kvlist: rte_kvargs_free(kvlist); @@ -1100,6 +1215,7 @@ free_kvlist: static int pmd_pcap_remove(struct rte_vdev_device *dev) { + struct pmd_internals *internals = NULL; struct rte_eth_dev *eth_dev = NULL; PMD_LOG(INFO, "Closing pcap ethdev on numa socket %d", @@ -1113,6 +1229,10 @@ pmd_pcap_remove(struct rte_vdev_device *dev) if (eth_dev == NULL) return -1; + internals = eth_dev->data->dev_private; + if (internals && internals->phy_mac) + rte_free(eth_dev->data->mac_addrs); + rte_free(eth_dev->data->dev_private); rte_eth_dev_release_port(eth_dev); @@ -1133,7 +1253,8 @@ RTE_PMD_REGISTER_PARAM_STRING(net_pcap, ETH_PCAP_RX_IFACE_ARG "= " ETH_PCAP_RX_IFACE_IN_ARG "= " ETH_PCAP_TX_IFACE_ARG "= " - ETH_PCAP_IFACE_ARG "="); + ETH_PCAP_IFACE_ARG "= " + ETH_PCAP_PHY_MAC_ARG "="); RTE_INIT(eth_pcap_init_log) {