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| author | Parav Pandit <parav@mellanox.com> | 2019-02-26 14:01:48 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-03-28 14:52:02 -0300 |
| commit | cb7e0e130503cb8e5ee6a7e8983bf71ed408516f (patch) | |
| tree | 27ffc014ac210f970a46e830d07b43778acef8fd /drivers/infiniband/core/nldev.c | |
| parent | 37eeab55aeca98cb6648b471f09c0e651ccb1e7c (diff) | |
| download | lwn-cb7e0e130503cb8e5ee6a7e8983bf71ed408516f.tar.gz lwn-cb7e0e130503cb8e5ee6a7e8983bf71ed408516f.zip | |
RDMA/core: Add interface to read device namespace sharing mode
Add an interface via netlink command to query whether rdma devices are
shared among multiple net namespaces or not. When using RDMAtool, it can
be queried as,
$rdma system show netns
netns shared
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/nldev.c')
| -rw-r--r-- | drivers/infiniband/core/nldev.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 284e5f103fc9..49c048738f94 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -116,6 +116,7 @@ static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = { [RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 }, [RDMA_NLDEV_ATTR_LINK_TYPE] = { .type = NLA_NUL_STRING, .len = RDMA_NLDEV_ATTR_ENTRY_STRLEN }, + [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 }, }; static int put_driver_name_print_type(struct sk_buff *msg, const char *name, @@ -1312,6 +1313,34 @@ static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, return 0; } +static int nldev_get_sys_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; + struct nlmsghdr *nlh; + int err; + + err = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, + nldev_policy, NULL); + if (err) + return err; + + nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, + RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, + RDMA_NLDEV_CMD_SYS_GET), + 0, 0); + + err = nla_put_u8(skb, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, + (u8)ib_devices_shared_netns); + if (err) { + nlmsg_cancel(skb, nlh); + return err; + } + + nlmsg_end(skb, nlh); + return skb->len; +} + static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { [RDMA_NLDEV_CMD_GET] = { .doit = nldev_get_doit, @@ -1357,6 +1386,9 @@ static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { .doit = nldev_res_get_pd_doit, .dump = nldev_res_get_pd_dumpit, }, + [RDMA_NLDEV_CMD_SYS_GET] = { + .dump = nldev_get_sys_get_dumpit, + }, }; void __init nldev_init(void) |