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staging: lustre: lnet: enable configuration per NI interface

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Add the ability to configure each NI interface at bring up.
Also give the ability for user land utilities to query the
configuration of each NI interface.

Signed-off-by: Amir Shehata <amir.shehata@intel.com>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7101
Reviewed-on: http://review.whamcloud.com/16367
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Olaf Weber <olaf@sgi.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Amir Shehata 2016-05-06 21:30:31 -04:00 committed by Greg Kroah-Hartman
parent 2c6a1845e6
commit 1b30ccded5
1 changed files with 42 additions and 0 deletions
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42
drivers/staging/lustre/lnet/lnet/api-ni.c
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@ -1217,6 +1217,7 @@ lnet_shutdown_lndni(struct lnet_ni *ni)
static int
lnet_startup_lndni(struct lnet_ni *ni, struct lnet_ioctl_config_data *conf)
{
struct lnet_ioctl_config_lnd_tunables *lnd_tunables = NULL;
int rc = -EINVAL;
int lnd_type;
lnd_t *lnd;
@ -1274,6 +1275,21 @@ lnet_startup_lndni(struct lnet_ni *ni, struct lnet_ioctl_config_data *conf)
ni->ni_lnd = lnd;
if (conf && conf->cfg_hdr.ioc_len > sizeof(*conf))
lnd_tunables = (struct lnet_ioctl_config_lnd_tunables *)conf->cfg_bulk;
if (lnd_tunables) {
LIBCFS_ALLOC(ni->ni_lnd_tunables,
sizeof(*ni->ni_lnd_tunables));
if (!ni->ni_lnd_tunables) {
mutex_unlock(&the_lnet.ln_lnd_mutex);
rc = -ENOMEM;
goto failed0;
}
memcpy(ni->ni_lnd_tunables, lnd_tunables,
sizeof(*ni->ni_lnd_tunables));
}
rc = lnd->lnd_startup(ni);
mutex_unlock(&the_lnet.ln_lnd_mutex);
@ -1653,7 +1669,9 @@ EXPORT_SYMBOL(LNetNIFini);
static void
lnet_fill_ni_info(struct lnet_ni *ni, struct lnet_ioctl_config_data *config)
{
struct lnet_ioctl_config_lnd_tunables *lnd_cfg = NULL;
struct lnet_ioctl_net_config *net_config;
size_t min_size, tunable_size = 0;
int i;
if (!ni || !config)
@ -1691,6 +1709,30 @@ lnet_fill_ni_info(struct lnet_ni *ni, struct lnet_ioctl_config_data *config)
config->cfg_ncpts = num_cpts;
}
/*
* See if user land tools sent in a newer and larger version
* of struct lnet_tunables than what the kernel uses.
*/
min_size = sizeof(*config) + sizeof(*net_config);
if (config->cfg_hdr.ioc_len > min_size)
tunable_size = config->cfg_hdr.ioc_len - min_size;
/* Don't copy to much data to user space */
min_size = min(tunable_size, sizeof(*ni->ni_lnd_tunables));
lnd_cfg = (struct lnet_ioctl_config_lnd_tunables *)net_config->cfg_bulk;
if (ni->ni_lnd_tunables && lnd_cfg && min_size) {
memcpy(lnd_cfg, ni->ni_lnd_tunables, min_size);
config->cfg_config_u.cfg_net.net_interface_count = 1;
/* Tell user land that kernel side has less data */
if (tunable_size > sizeof(*ni->ni_lnd_tunables)) {
min_size = tunable_size - sizeof(ni->ni_lnd_tunables);
config->cfg_hdr.ioc_len -= min_size;
}
}
}
static int