diff options
| author | Sean Hefty <sean.hefty@intel.com> | 2006-10-31 11:12:59 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-11-02 14:26:04 -0800 |
| commit | 7a118df3ea23820b9922a1b51cd2f24e464f4c17 (patch) | |
| tree | 723e979c84263c52971494b7ba69cbee25f602bc /include/rdma | |
| parent | 68586b67ab1a2fd618f79e29a06f10ae886f4b46 (diff) | |
| download | linux-7a118df3ea23820b9922a1b51cd2f24e464f4c17.tar.gz | |
RDMA/addr: Use client registration to fix module unload race
Require registration with ib_addr module to prevent caller from
unloading while a callback is in progress.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_addr.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/include/rdma/ib_addr.h b/include/rdma/ib_addr.h index 81b62307621d..c094e5012862 100644 --- a/include/rdma/ib_addr.h +++ b/include/rdma/ib_addr.h @@ -36,6 +36,22 @@ #include <linux/socket.h> #include <rdma/ib_verbs.h> +struct rdma_addr_client { + atomic_t refcount; + struct completion comp; +}; + +/** + * rdma_addr_register_client - Register an address client. + */ +void rdma_addr_register_client(struct rdma_addr_client *client); + +/** + * rdma_addr_unregister_client - Deregister an address client. + * @client: Client object to deregister. + */ +void rdma_addr_unregister_client(struct rdma_addr_client *client); + struct rdma_dev_addr { unsigned char src_dev_addr[MAX_ADDR_LEN]; unsigned char dst_dev_addr[MAX_ADDR_LEN]; @@ -52,6 +68,7 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); /** * rdma_resolve_ip - Resolve source and destination IP addresses to * RDMA hardware addresses. + * @client: Address client associated with request. * @src_addr: An optional source address to use in the resolution. If a * source address is not provided, a usable address will be returned via * the callback. @@ -64,7 +81,8 @@ int rdma_translate_ip(struct sockaddr *addr, struct rdma_dev_addr *dev_addr); * or been canceled. A status of 0 indicates success. * @context: User-specified context associated with the call. */ -int rdma_resolve_ip(struct sockaddr *src_addr, struct sockaddr *dst_addr, +int rdma_resolve_ip(struct rdma_addr_client *client, + struct sockaddr *src_addr, struct sockaddr *dst_addr, struct rdma_dev_addr *addr, int timeout_ms, void (*callback)(int status, struct sockaddr *src_addr, struct rdma_dev_addr *addr, void *context), |