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RDMA/core: Add wait/retry version of ibnl_unicast

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Add a wait/retry version of ibnl_unicast, ibnl_unicast_wait,
and modify ibnl_unicast to not wait/retry.  This eliminates
the undesirable wait for future users of ibnl_unicast.

Change Portmapper calls originating from kernel to user-space
to use ibnl_unicast_wait and take advantage of the wait/retry
logic in netlink_unicast.

Signed-off-by: Mustafa Ismail <[email protected]>
Signed-off-by: Chien Tin Tung <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
This commit is contained in:
Ismail, Mustafa 2017-06-28 09:02:45 -05:00 • committed by Leon Romanovsky
commit 9047811b77
3 changed files with 24 additions and 4 deletions
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10
include/rdma/rdma_netlink.h
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@ -63,6 +63,16 @@ int ibnl_put_attr(struct sk_buff *skb, struct nlmsghdr *nlh,
int ibnl_unicast(struct sk_buff *skb, struct nlmsghdr *nlh,
__u32 pid);
/**
* Send, with wait/1 retry, the supplied skb to a specific userspace PID.
* @skb: The netlink skb
* @nlh: Header of the netlink message to send
* @pid: Userspace netlink process ID
* Returns 0 on success or a negative error code.
*/
int ibnl_unicast_wait(struct sk_buff *skb, struct nlmsghdr *nlh,
__u32 pid);
/**
* Send the supplied skb to a netlink group.
* @skb: The netlink skb