* Copyright 2015 Mellanox Technologies, Ltd
*/
-#define _GNU_SOURCE
-
#include <stddef.h>
#include <assert.h>
#include <inttypes.h>
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
-int
+static int
mlx5_get_master_ifname(const struct rte_eth_dev *dev,
char (*ifname)[IF_NAMESIZE])
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
DIR *dir;
struct dirent *dent;
unsigned int dev_type = 0;
unsigned int dev_port_prev = ~0u;
char match[IF_NAMESIZE] = "";
+ assert(priv);
+ assert(priv->sh);
{
- MKSTR(path, "%s/device/net", priv->ibdev_path);
+ MKSTR(path, "%s/device/net", priv->sh->ibdev_path);
dir = opendir(path);
if (dir == NULL) {
continue;
MKSTR(path, "%s/device/net/%s/%s",
- priv->ibdev_path, name,
+ priv->sh->ibdev_path, name,
(dev_type ? "dev_id" : "dev_port"));
file = fopen(path, "rb");
int
mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
unsigned int ifindex =
priv->nl_socket_rdma >= 0 ?
- mlx5_nl_ifindex(priv->nl_socket_rdma, priv->ibdev_name) : 0;
+ mlx5_nl_ifindex(priv->nl_socket_rdma,
+ priv->sh->ibdev_name,
+ priv->ibv_port) : 0;
if (!ifindex) {
if (!priv->representor)
* Pointer to Ethernet device.
*
* @return
- * Interface index on success, a negative errno value otherwise and
- * rte_errno is set.
+ * Nonzero interface index on success, zero otherwise and rte_errno is set.
*/
-int
+unsigned int
mlx5_ifindex(const struct rte_eth_dev *dev)
{
char ifname[IF_NAMESIZE];
- unsigned int ret;
+ unsigned int ifindex;
- ret = mlx5_get_ifname(dev, &ifname);
- if (ret)
- return ret;
- ret = if_nametoindex(ifname);
- if (ret == 0) {
+ if (mlx5_get_ifname(dev, &ifname))
+ return 0;
+ ifindex = if_nametoindex(ifname);
+ if (!ifindex)
rte_errno = errno;
- return -rte_errno;
- }
- return ret;
+ return ifindex;
}
/**
* Request number to pass to ioctl().
* @param[out] ifr
* Interface request structure output buffer.
- * @param master
- * When device is a port representor, perform request on master device
- * instead.
*
* @return
* 0 on success, a negative errno value otherwise and rte_errno is set.
*/
int
-mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr,
- int master)
+mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
{
int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
int ret = 0;
rte_errno = errno;
return -rte_errno;
}
- if (master)
- ret = mlx5_get_master_ifname(dev, &ifr->ifr_name);
- else
- ret = mlx5_get_ifname(dev, &ifr->ifr_name);
+ ret = mlx5_get_ifname(dev, &ifr->ifr_name);
if (ret)
goto error;
ret = ioctl(sock, req, ifr);
mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
{
struct ifreq request;
- int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request, 0);
+ int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
if (ret)
return ret;
{
struct ifreq request = { .ifr_mtu = mtu, };
- return mlx5_ifreq(dev, SIOCSIFMTU, &request, 0);
+ return mlx5_ifreq(dev, SIOCSIFMTU, &request);
}
/**
mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
{
struct ifreq request;
- int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request, 0);
+ int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
if (ret)
return ret;
request.ifr_flags &= keep;
request.ifr_flags |= flags & ~keep;
- return mlx5_ifreq(dev, SIOCSIFFLAGS, &request, 0);
+ return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
}
/**
int
mlx5_dev_configure(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
unsigned int rxqs_n = dev->data->nb_rx_queues;
unsigned int txqs_n = dev->data->nb_tx_queues;
unsigned int i;
static void
mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
/* Minimum CPU utilization. */
info->default_rxportconf.ring_size = 256;
void
mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
struct mlx5_dev_config *config = &priv->config;
unsigned int max;
char ifname[IF_NAMESIZE];
* Since we need one CQ per QP, the limit is the minimum number
* between the two values.
*/
- max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
- priv->device_attr.orig_attr.max_qp);
+ max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
+ priv->sh->device_attr.orig_attr.max_qp);
/* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
if (max >= 65535)
max = 65535;
i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i);
while (i--) {
- struct priv *opriv =
+ struct mlx5_priv *opriv =
rte_eth_devices[port_id[i]].data->dev_private;
if (!opriv ||
}
}
+/**
+ * Get firmware version of a device.
+ *
+ * @param dev
+ * Ethernet device port.
+ * @param fw_ver
+ * String output allocated by caller.
+ * @param fw_size
+ * Size of the output string, including terminating null byte.
+ *
+ * @return
+ * 0 on success, or the size of the non truncated string if too big.
+ */
+int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
+{
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
+ size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
+
+ if (fw_size < size)
+ return size;
+ if (fw_ver != NULL)
+ strlcpy(fw_ver, attr->fw_ver, fw_size);
+ return 0;
+}
+
/**
* Get supported packet types.
*
mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
struct rte_eth_link *link)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
struct ethtool_cmd edata = {
.cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
};
int link_speed = 0;
int ret;
- ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr, 1);
+ ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
if (ret) {
DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
dev->data->port_id, strerror(rte_errno));
return ret;
}
- memset(&dev_link, 0, sizeof(dev_link));
- dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
- (ifr.ifr_flags & IFF_RUNNING));
- ifr.ifr_data = (void *)&edata;
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr, 1);
+ dev_link = (struct rte_eth_link) {
+ .link_status = ((ifr.ifr_flags & IFF_UP) &&
+ (ifr.ifr_flags & IFF_RUNNING)),
+ };
+ ifr = (struct ifreq) {
+ .ifr_data = (void *)&edata,
+ };
+ ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
if (ret) {
DRV_LOG(WARNING,
"port %u ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
- if ((dev_link.link_speed && !dev_link.link_status) ||
- (!dev_link.link_speed && dev_link.link_status)) {
+ if (((dev_link.link_speed && !dev_link.link_status) ||
+ (!dev_link.link_speed && dev_link.link_status))) {
rte_errno = EAGAIN;
return -rte_errno;
}
struct rte_eth_link *link)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
struct ifreq ifr;
struct rte_eth_link dev_link;
uint64_t sc;
int ret;
- ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr, 1);
+ ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
if (ret) {
DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
dev->data->port_id, strerror(rte_errno));
return ret;
}
- memset(&dev_link, 0, sizeof(dev_link));
- dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
- (ifr.ifr_flags & IFF_RUNNING));
- ifr.ifr_data = (void *)&gcmd;
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr, 1);
+ dev_link = (struct rte_eth_link) {
+ .link_status = ((ifr.ifr_flags & IFF_UP) &&
+ (ifr.ifr_flags & IFF_RUNNING)),
+ };
+ ifr = (struct ifreq) {
+ .ifr_data = (void *)&gcmd,
+ };
+ ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
if (ret) {
DRV_LOG(DEBUG,
"port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
*ecmd = gcmd;
ifr.ifr_data = (void *)ecmd;
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr, 1);
+ ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
if (ret) {
DRV_LOG(DEBUG,
"port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
ETH_LINK_SPEED_FIXED);
- if ((dev_link.link_speed && !dev_link.link_status) ||
- (!dev_link.link_speed && dev_link.link_status)) {
+ if (((dev_link.link_speed && !dev_link.link_status) ||
+ (!dev_link.link_speed && dev_link.link_status))) {
rte_errno = EAGAIN;
return -rte_errno;
}
int
mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
uint16_t kern_mtu = 0;
int ret;
int ret;
ifr.ifr_data = (void *)ðpause;
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr, 1);
+ ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
if (ret) {
DRV_LOG(WARNING,
"port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
ethpause.tx_pause = 1;
else
ethpause.tx_pause = 0;
- ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr, 0);
+ ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
if (ret) {
DRV_LOG(WARNING,
"port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
}
/**
- * Device status handler.
- *
- * @param dev
- * Pointer to Ethernet device.
- * @param events
- * Pointer to event flags holder.
+ * Handle shared asynchronous events the NIC (removal event
+ * and link status change). Supports multiport IB device.
*
- * @return
- * Events bitmap of callback process which can be called immediately.
+ * @param cb_arg
+ * Callback argument.
*/
-static uint32_t
-mlx5_dev_status_handler(struct rte_eth_dev *dev)
+void
+mlx5_dev_interrupt_handler(void *cb_arg)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_ibv_shared *sh = cb_arg;
struct ibv_async_event event;
- uint32_t ret = 0;
- if (mlx5_link_update(dev, 0) == -EAGAIN) {
- usleep(0);
- return 0;
- }
- /* Read all message and acknowledge them. */
+ /* Read all message from the IB device and acknowledge them. */
for (;;) {
- if (mlx5_glue->get_async_event(priv->ctx, &event))
+ struct rte_eth_dev *dev;
+ uint32_t tmp;
+
+ if (mlx5_glue->get_async_event(sh->ctx, &event))
break;
+ /* Retrieve and check IB port index. */
+ tmp = (uint32_t)event.element.port_num;
+ assert(tmp && (tmp <= sh->max_port));
+ if (!tmp ||
+ tmp > sh->max_port ||
+ sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
+ /*
+ * Invalid IB port index or no handler
+ * installed for this port.
+ */
+ mlx5_glue->ack_async_event(&event);
+ continue;
+ }
+ /* Retrieve ethernet device descriptor. */
+ tmp = sh->port[tmp - 1].ih_port_id;
+ dev = &rte_eth_devices[tmp];
+ tmp = 0;
+ assert(dev);
if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
- event.event_type == IBV_EVENT_PORT_ERR) &&
- (dev->data->dev_conf.intr_conf.lsc == 1))
- ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
- else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
- dev->data->dev_conf.intr_conf.rmv == 1)
- ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
- else
- DRV_LOG(DEBUG,
- "port %u event type %d on not handled",
- dev->data->port_id, event.event_type);
+ event.event_type == IBV_EVENT_PORT_ERR) &&
+ dev->data->dev_conf.intr_conf.lsc) {
+ mlx5_glue->ack_async_event(&event);
+ if (mlx5_link_update(dev, 0) == -EAGAIN) {
+ usleep(0);
+ continue;
+ }
+ _rte_eth_dev_callback_process
+ (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
+ continue;
+ }
+ if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
+ dev->data->dev_conf.intr_conf.rmv) {
+ mlx5_glue->ack_async_event(&event);
+ _rte_eth_dev_callback_process
+ (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
+ continue;
+ }
+ DRV_LOG(DEBUG,
+ "port %u event type %d on not handled",
+ dev->data->port_id, event.event_type);
mlx5_glue->ack_async_event(&event);
}
- return ret;
}
/**
- * Handle interrupts from the NIC.
+ * Uninstall shared asynchronous device events handler.
+ * This function is implemeted to support event sharing
+ * between multiple ports of single IB device.
*
- * @param[in] intr_handle
- * Interrupt handler.
- * @param cb_arg
- * Callback argument.
+ * @param dev
+ * Pointer to Ethernet device.
*/
-void
-mlx5_dev_interrupt_handler(void *cb_arg)
+static void
+mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
{
- struct rte_eth_dev *dev = cb_arg;
- uint32_t events;
-
- events = mlx5_dev_status_handler(dev);
- if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
- _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
- if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
- _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_ibv_shared *sh = priv->sh;
+
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ return;
+ pthread_mutex_lock(&sh->intr_mutex);
+ assert(priv->ibv_port);
+ assert(priv->ibv_port <= sh->max_port);
+ assert(dev->data->port_id < RTE_MAX_ETHPORTS);
+ if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
+ goto exit;
+ assert(sh->port[priv->ibv_port - 1].ih_port_id ==
+ (uint32_t)dev->data->port_id);
+ assert(sh->intr_cnt);
+ sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
+ if (!sh->intr_cnt || --sh->intr_cnt)
+ goto exit;
+ rte_intr_callback_unregister(&sh->intr_handle,
+ mlx5_dev_interrupt_handler, sh);
+ sh->intr_handle.fd = 0;
+ sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+exit:
+ pthread_mutex_unlock(&sh->intr_mutex);
}
/**
- * Handle interrupts from the socket.
+ * Install shared asyncronous device events handler.
+ * This function is implemeted to support event sharing
+ * between multiple ports of single IB device.
*
- * @param cb_arg
- * Callback argument.
+ * @param dev
+ * Pointer to Ethernet device.
*/
static void
-mlx5_dev_handler_socket(void *cb_arg)
+mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
{
- struct rte_eth_dev *dev = cb_arg;
+ struct mlx5_priv *priv = dev->data->dev_private;
+ struct mlx5_ibv_shared *sh = priv->sh;
+ int ret;
+ int flags;
- mlx5_socket_handle(dev);
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ return;
+ pthread_mutex_lock(&sh->intr_mutex);
+ assert(priv->ibv_port);
+ assert(priv->ibv_port <= sh->max_port);
+ assert(dev->data->port_id < RTE_MAX_ETHPORTS);
+ if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
+ /* The handler is already installed for this port. */
+ assert(sh->intr_cnt);
+ goto exit;
+ }
+ sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id;
+ if (sh->intr_cnt) {
+ sh->intr_cnt++;
+ goto exit;
+ }
+ /* No shared handler installed. */
+ assert(sh->ctx->async_fd > 0);
+ flags = fcntl(sh->ctx->async_fd, F_GETFL);
+ ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
+ if (ret) {
+ DRV_LOG(INFO, "failed to change file descriptor"
+ " async event queue");
+ /* Indicate there will be no interrupts. */
+ dev->data->dev_conf.intr_conf.lsc = 0;
+ dev->data->dev_conf.intr_conf.rmv = 0;
+ sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
+ goto exit;
+ }
+ sh->intr_handle.fd = sh->ctx->async_fd;
+ sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
+ rte_intr_callback_register(&sh->intr_handle,
+ mlx5_dev_interrupt_handler, sh);
+ sh->intr_cnt++;
+exit:
+ pthread_mutex_unlock(&sh->intr_mutex);
}
/**
void
mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
-
- if (dev->data->dev_conf.intr_conf.lsc ||
- dev->data->dev_conf.intr_conf.rmv)
- rte_intr_callback_unregister(&priv->intr_handle,
- mlx5_dev_interrupt_handler, dev);
- if (priv->primary_socket)
- rte_intr_callback_unregister(&priv->intr_handle_socket,
- mlx5_dev_handler_socket, dev);
- priv->intr_handle.fd = 0;
- priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
- priv->intr_handle_socket.fd = 0;
- priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
+ mlx5_dev_shared_handler_uninstall(dev);
}
/**
void
mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
- int ret;
- int flags;
-
- assert(priv->ctx->async_fd > 0);
- flags = fcntl(priv->ctx->async_fd, F_GETFL);
- ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
- if (ret) {
- DRV_LOG(INFO,
- "port %u failed to change file descriptor async event"
- " queue",
- dev->data->port_id);
- dev->data->dev_conf.intr_conf.lsc = 0;
- dev->data->dev_conf.intr_conf.rmv = 0;
- }
- if (dev->data->dev_conf.intr_conf.lsc ||
- dev->data->dev_conf.intr_conf.rmv) {
- priv->intr_handle.fd = priv->ctx->async_fd;
- priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
- rte_intr_callback_register(&priv->intr_handle,
- mlx5_dev_interrupt_handler, dev);
- }
- ret = mlx5_socket_init(dev);
- if (ret)
- DRV_LOG(ERR, "port %u cannot initialise socket: %s",
- dev->data->port_id, strerror(rte_errno));
- else if (priv->primary_socket) {
- priv->intr_handle_socket.fd = priv->primary_socket;
- priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
- rte_intr_callback_register(&priv->intr_handle_socket,
- mlx5_dev_handler_socket, dev);
- }
+ mlx5_dev_shared_handler_install(dev);
}
/**
eth_tx_burst_t
mlx5_select_tx_function(struct rte_eth_dev *dev)
{
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
struct mlx5_dev_config *config = &priv->config;
uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
mlx5_is_removed(struct rte_eth_dev *dev)
{
struct ibv_device_attr device_attr;
- struct priv *priv = dev->data->dev_private;
+ struct mlx5_priv *priv = dev->data->dev_private;
- if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
+ if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
return 1;
return 0;
}
RTE_ETH_FOREACH_DEV(id) {
struct rte_eth_dev *ldev = &rte_eth_devices[id];
- if (!ldev->device ||
- !ldev->device->driver ||
- strcmp(ldev->device->driver->name, MLX5_DRIVER_NAME) ||
- ldev->device != dev)
+ if (ldev->device != dev)
continue;
if (n < port_list_n)
port_list[n] = id;
}
return n;
}
+
+/**
+ * Get switch information associated with network interface.
+ *
+ * @param ifindex
+ * Network interface index.
+ * @param[out] info
+ * Switch information object, populated in case of success.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
+{
+ char ifname[IF_NAMESIZE];
+ char port_name[IF_NAMESIZE];
+ FILE *file;
+ struct mlx5_switch_info data = {
+ .master = 0,
+ .representor = 0,
+ .port_name_new = 0,
+ .port_name = 0,
+ .switch_id = 0,
+ };
+ DIR *dir;
+ bool port_name_set = false;
+ bool port_switch_id_set = false;
+ bool device_dir = false;
+ char c;
+ int ret;
+
+ if (!if_indextoname(ifindex, ifname)) {
+ rte_errno = errno;
+ return -rte_errno;
+ }
+
+ MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
+ ifname);
+ MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
+ ifname);
+ MKSTR(pci_device, "/sys/class/net/%s/device",
+ ifname);
+
+ file = fopen(phys_port_name, "rb");
+ if (file != NULL) {
+ ret = fscanf(file, "%s", port_name);
+ fclose(file);
+ if (ret == 1)
+ port_name_set = mlx5_translate_port_name(port_name,
+ &data);
+ }
+ file = fopen(phys_switch_id, "rb");
+ if (file == NULL) {
+ rte_errno = errno;
+ return -rte_errno;
+ }
+ port_switch_id_set =
+ fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
+ c == '\n';
+ fclose(file);
+ dir = opendir(pci_device);
+ if (dir != NULL) {
+ closedir(dir);
+ device_dir = true;
+ }
+ data.master = port_switch_id_set && (!port_name_set || device_dir);
+ data.representor = port_switch_id_set && port_name_set && !device_dir;
+ *info = data;
+ assert(!(data.master && data.representor));
+ if (data.master && data.representor) {
+ DRV_LOG(ERR, "ifindex %u device is recognized as master"
+ " and as representor", ifindex);
+ rte_errno = ENODEV;
+ return -rte_errno;
+ }
+ return 0;
+}
+
+/**
+ * Extract port name, as a number, from sysfs or netlink information.
+ *
+ * @param[in] port_name_in
+ * String representing the port name.
+ * @param[out] port_info_out
+ * Port information, including port name as a number.
+ *
+ * @return
+ * true on success, false otherwise.
+ */
+bool
+mlx5_translate_port_name(const char *port_name_in,
+ struct mlx5_switch_info *port_info_out)
+{
+ char pf_c1, pf_c2, vf_c1, vf_c2;
+ char *end;
+ int32_t pf_num;
+ bool port_name_set = false;
+
+ /*
+ * Check for port-name as a string of the form pf0vf0
+ * (support kernel ver >= 5.0)
+ */
+ port_name_set = (sscanf(port_name_in, "%c%c%d%c%c%d", &pf_c1, &pf_c2,
+ &pf_num, &vf_c1, &vf_c2,
+ &port_info_out->port_name) == 6);
+ if (port_name_set) {
+ port_info_out->port_name_new = 1;
+ } else {
+ /* Check for port-name as a number (support kernel ver < 5.0 */
+ errno = 0;
+ port_info_out->port_name = strtol(port_name_in, &end, 0);
+ if (!errno &&
+ (size_t)(end - port_name_in) == strlen(port_name_in))
+ port_name_set = true;
+ }
+ return port_name_set;
+}
git.droids-corp.org / dpdk.git / blobdiff