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CIFS: SMBD: Implement function to create a SMB Direct connection

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The upper layer calls this function to connect to peer through SMB Direct.
Each SMB Direct connection is based on a RDMA RC Queue Pair.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Long Li 2017-11-17 17:26:52 -08:00 committed by Steve French
parent f198186aa9
commit 399f9539d9
2 changed files with 23 additions and 0 deletions
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17
fs/cifs/smbdirect.c
View file

@ -1646,3 +1646,20 @@ struct smbd_connection *_smbd_get_connection(
kfree(info);
return NULL;
}
struct smbd_connection *smbd_get_connection(
struct TCP_Server_Info *server, struct sockaddr *dstaddr)
{
struct smbd_connection *ret;
int port = SMBD_PORT;
try_again:
ret = _smbd_get_connection(server, dstaddr, port);
/* Try SMB_PORT if SMBD_PORT doesn't work */
if (!ret && port == SMBD_PORT) {
port = SMB_PORT;
goto try_again;
}
return ret;
}

6
fs/cifs/smbdirect.h
View file

@ -243,9 +243,15 @@ struct smbd_response {
u8 packet[];
};
/* Create a SMBDirect session */
struct smbd_connection *smbd_get_connection(
struct TCP_Server_Info *server, struct sockaddr *dstaddr);
#else
#define cifs_rdma_enabled(server) 0
struct smbd_connection {};
static inline void *smbd_get_connection(
struct TCP_Server_Info *server, struct sockaddr *dstaddr) {return NULL;}
#endif
#endif