[Patch v3 05/19] CIFS: SMBD: Connect to SMBDirect session
From: Long Li <hidden>
Date: 2017-08-29 19:30:41
Also in:
linux-cifs, lkml
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
From: Long Li <longli@microsoft.com> When "rdma" is specified in the mount option, CIFS attempts to connect to SMBDirect instead of TCP socket. Signed-off-by: Long Li <longli@microsoft.com> --- fs/cifs/connect.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 19fdca8..43b4d54 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c@@ -45,6 +45,7 @@ #include <linux/parser.h> #include <linux/bvec.h> +#include "smbdirect.h" #include "cifspdu.h" #include "cifsglob.h" #include "cifsproto.h"
@@ -2289,12 +2290,26 @@ cifs_get_tcp_session(struct smb_vol *volume_info) else tcp_ses->echo_interval = SMB_ECHO_INTERVAL_DEFAULT * HZ; + if (tcp_ses->rdma) { + tcp_ses->smbd_conn = smbd_get_connection( + tcp_ses, (struct sockaddr *)&volume_info->dstaddr); + if (tcp_ses->smbd_conn) { + cifs_dbg(VFS, "RDMA transport established\n"); + rc = 0; + goto connected; + } else { + rc = -ENOENT; + goto out_err_crypto_release; + } + } + rc = ip_connect(tcp_ses); if (rc < 0) { cifs_dbg(VFS, "Error connecting to socket. Aborting operation.\n"); goto out_err_crypto_release; } +connected: /* * since we're in a cifs function already, we know that * this will succeed. No need for try_module_get().
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2.7.4