#include <stddef.h>
#include <assert.h>
+#include <inttypes.h>
#include <unistd.h>
#include <stdint.h>
#include <stdio.h>
return 0;
}
-/**
- * Check if the counter is located on ib counters file.
- *
- * @param[in] cntr
- * Counter name.
- *
- * @return
- * 1 if counter is located on ib counters file , 0 otherwise.
- */
-int
-priv_is_ib_cntr(const char *cntr)
-{
- if (!strcmp(cntr, "out_of_buffer"))
- return 1;
- return 0;
-}
-
-/**
- * Read from sysfs entry.
- *
- * @param[in] priv
- * Pointer to private structure.
- * @param[in] entry
- * Entry name relative to sysfs path.
- * @param[out] buf
- * Data output buffer.
- * @param size
- * Buffer size.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-static int
-priv_sysfs_read(const struct priv *priv, const char *entry,
- char *buf, size_t size)
-{
- char ifname[IF_NAMESIZE];
- FILE *file;
- int ret;
- int err;
-
- if (priv_get_ifname(priv, &ifname))
- return -1;
-
- if (priv_is_ib_cntr(entry)) {
- MKSTR(path, "%s/ports/1/hw_counters/%s",
- priv->ibdev_path, entry);
- file = fopen(path, "rb");
- } else {
- MKSTR(path, "%s/device/net/%s/%s",
- priv->ibdev_path, ifname, entry);
- file = fopen(path, "rb");
- }
- if (file == NULL)
- return -1;
- ret = fread(buf, 1, size, file);
- err = errno;
- if (((size_t)ret < size) && (ferror(file)))
- ret = -1;
- else
- ret = size;
- fclose(file);
- errno = err;
- return ret;
-}
-
-/**
- * Write to sysfs entry.
- *
- * @param[in] priv
- * Pointer to private structure.
- * @param[in] entry
- * Entry name relative to sysfs path.
- * @param[in] buf
- * Data buffer.
- * @param size
- * Buffer size.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-static int
-priv_sysfs_write(const struct priv *priv, const char *entry,
- char *buf, size_t size)
-{
- char ifname[IF_NAMESIZE];
- FILE *file;
- int ret;
- int err;
-
- if (priv_get_ifname(priv, &ifname))
- return -1;
-
- MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry);
-
- file = fopen(path, "wb");
- if (file == NULL)
- return -1;
- ret = fwrite(buf, 1, size, file);
- err = errno;
- if (((size_t)ret < size) || (ferror(file)))
- ret = -1;
- else
- ret = size;
- fclose(file);
- errno = err;
- return ret;
-}
-
-/**
- * Get unsigned long sysfs property.
- *
- * @param priv
- * Pointer to private structure.
- * @param[in] name
- * Entry name relative to sysfs path.
- * @param[out] value
- * Value output buffer.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-static int
-priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
-{
- int ret;
- unsigned long value_ret;
- char value_str[32];
-
- ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
- if (ret == -1) {
- DEBUG("cannot read %s value from sysfs: %s",
- name, strerror(errno));
- return -1;
- }
- value_str[ret] = '\0';
- errno = 0;
- value_ret = strtoul(value_str, NULL, 0);
- if (errno) {
- DEBUG("invalid %s value `%s': %s", name, value_str,
- strerror(errno));
- return -1;
- }
- *value = value_ret;
- return 0;
-}
-
-/**
- * Set unsigned long sysfs property.
- *
- * @param priv
- * Pointer to private structure.
- * @param[in] name
- * Entry name relative to sysfs path.
- * @param value
- * Value to set.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-static int
-priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
-{
- int ret;
- MKSTR(value_str, "%lu", value);
-
- ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
- if (ret == -1) {
- DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
- name, value_str, value, strerror(errno));
- return -1;
- }
- return 0;
-}
-
/**
* Perform ifreq ioctl() on associated Ethernet device.
*
return ret;
}
-/**
- * Return the number of active VFs for the current device.
- *
- * @param[in] priv
- * Pointer to private structure.
- * @param[out] num_vfs
- * Number of active VFs.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-int
-priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
-{
- /* The sysfs entry name depends on the operating system. */
- const char **name = (const char *[]){
- "device/sriov_numvfs",
- "device/mlx5_num_vfs",
- NULL,
- };
- int ret;
-
- do {
- unsigned long ulong_num_vfs;
-
- ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
- if (!ret)
- *num_vfs = ulong_num_vfs;
- } while (*(++name) && ret);
- return ret;
-}
-
/**
* Get device MTU.
*
int
priv_get_mtu(struct priv *priv, uint16_t *mtu)
{
- unsigned long ulong_mtu;
+ struct ifreq request;
+ int ret = priv_ifreq(priv, SIOCGIFMTU, &request);
- if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
- return -1;
- *mtu = ulong_mtu;
- return 0;
-}
-
-/**
- * Read device counter from sysfs.
- *
- * @param priv
- * Pointer to private structure.
- * @param name
- * Counter name.
- * @param[out] cntr
- * Counter output buffer.
- *
- * @return
- * 0 on success, -1 on failure and errno is set.
- */
-int
-priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
-{
- unsigned long ulong_ctr;
-
- if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
- return -1;
- *cntr = ulong_ctr;
+ if (ret)
+ return ret;
+ *mtu = request.ifr_mtu;
return 0;
}
static int
priv_set_mtu(struct priv *priv, uint16_t mtu)
{
- uint16_t new_mtu;
+ struct ifreq request = { .ifr_mtu = mtu, };
- if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
- priv_get_mtu(priv, &new_mtu))
- return -1;
- if (new_mtu == mtu)
- return 0;
- errno = EINVAL;
- return -1;
+ return priv_ifreq(priv, SIOCSIFMTU, &request);
}
/**
int
priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
{
- unsigned long tmp;
+ struct ifreq request;
+ int ret = priv_ifreq(priv, SIOCGIFFLAGS, &request);
- if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
- return -1;
- tmp &= keep;
- tmp |= (flags & (~keep));
- return priv_set_sysfs_ulong(priv, "flags", tmp);
+ if (ret)
+ return ret;
+ request.ifr_flags &= keep;
+ request.ifr_flags |= flags & ~keep;
+ return priv_ifreq(priv, SIOCSIFFLAGS, &request);
}
/**