diff options
| -rw-r--r-- | source3/smbd/smb2_negprot.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/source3/smbd/smb2_negprot.c b/source3/smbd/smb2_negprot.c index dd27700c7b..cb8e98354a 100644 --- a/source3/smbd/smb2_negprot.c +++ b/source3/smbd/smb2_negprot.c @@ -22,6 +22,7 @@ #include "smbd/smbd.h" #include "smbd/globals.h" #include "../libcli/smb/smb_common.h" +#include "tsocket.h" /* * this is the entry point if SMB2 is selected via @@ -226,14 +227,36 @@ NTSTATUS smbd_smb2_request_process_negprot(struct smbd_smb2_request *req) } /* - * Unless we implement SMB2_CAP_LARGE_MTU, * 0x10000 (65536) is the maximum allowed message size + * for SMB 2.0 */ max_limit = 0x10000; - max_trans = MIN(max_limit, max_trans); - max_read = MIN(max_limit, max_read); - max_write = MIN(max_limit, max_write); + if (protocol >= PROTOCOL_SMB2_10) { + /* largeMTU is only available on port 445 */ + if (TCP_SMB_PORT == + tsocket_address_inet_port(req->sconn->local_address)) + { + + capabilities |= SMB2_CAP_LARGE_MTU; + req->sconn->smb2.supports_multicredit = true; + + /* SMB2.1 has 1 MB of allowed size */ + max_limit = 0x100000; /* 1MB */ + } + } + + /* + * the defaults are 1MB, but we'll limit this to max_limit based on + * the dialect (64kb for SMB2.0, 1MB for SMB2.1 with LargeMTU) + * + * user configured values exceeding the limits will be overwritten, + * only smaller values will be accepted + */ + + max_trans = MIN(max_limit, lp_smb2_max_trans()); + max_read = MIN(max_limit, lp_smb2_max_read()); + max_write = MIN(max_limit, lp_smb2_max_write()); security_offset = SMB2_HDR_BODY + 0x40; |