diff options
Diffstat (limited to 'fs/cifs/cifssmb.c')
-rw-r--r-- | fs/cifs/cifssmb.c | 41 |
1 files changed, 17 insertions, 24 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 52caac063a7..365949c1464 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -125,6 +125,9 @@ small_smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon , nls_codepage); up(&tcon->ses->sesSem); + /* BB FIXME add code to check if wsize needs + update due to negotiated smb buffer size + shrinking */ if(rc == 0) atomic_inc(&tconInfoReconnectCount); @@ -220,6 +223,9 @@ smb_init(int smb_command, int wct, struct cifsTconInfo *tcon, rc = CIFSTCon(0, tcon->ses, tcon->treeName, tcon, nls_codepage); up(&tcon->ses->sesSem); + /* BB FIXME add code to check if wsize needs + update due to negotiated smb buffer size + shrinking */ if(rc == 0) atomic_inc(&tconInfoReconnectCount); @@ -1128,15 +1134,13 @@ CIFSSMBWrite(const int xid, struct cifsTconInfo *tcon, int CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, const int netfid, const unsigned int count, - const __u64 offset, unsigned int *nbytes, const char *buf, - const int long_op) + const __u64 offset, unsigned int *nbytes, struct kvec *iov, + int n_vec, const int long_op) { int rc = -EACCES; WRITE_REQ *pSMB = NULL; int bytes_returned; int smb_hdr_len; - __u32 bytes_sent; - __u16 byte_count; cFYI(1,("write2 at %lld %d bytes",offset,count)); /* BB removeme BB */ rc = small_smb_init(SMB_COM_WRITE_ANDX, 14, tcon, (void **) &pSMB); @@ -1154,31 +1158,20 @@ CIFSSMBWrite2(const int xid, struct cifsTconInfo *tcon, pSMB->WriteMode = 0; pSMB->Remaining = 0; - /* Can increase buffer size if buffer is big enough in some cases - ie - can send more if LARGE_WRITE_X capability returned by the server and if - our buffer is big enough or if we convert to iovecs on socket writes - and eliminate the copy to the CIFS buffer */ - if(tcon->ses->capabilities & CAP_LARGE_WRITE_X) { - bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count); - } else { - bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) - & ~0xFF; - } - - if (bytes_sent > count) - bytes_sent = count; pSMB->DataOffset = cpu_to_le16(offsetof(struct smb_com_write_req,Data) - 4); - byte_count = bytes_sent + 1 /* pad */ ; /* BB fix this for sends > 64K */ - pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF); - pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16); + pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF); + pSMB->DataLengthHigh = cpu_to_le16(count >> 16); smb_hdr_len = pSMB->hdr.smb_buf_length + 1; /* hdr + 1 byte pad */ - pSMB->hdr.smb_buf_length += bytes_sent+1; - pSMB->ByteCount = cpu_to_le16(byte_count); + pSMB->hdr.smb_buf_length += count+1; + pSMB->ByteCount = cpu_to_le16(count + 1); + + iov[0].iov_base = pSMB; + iov[0].iov_len = smb_hdr_len + 4; - rc = SendReceive2(xid, tcon->ses, (struct smb_hdr *) pSMB, smb_hdr_len, - buf, bytes_sent, &bytes_returned, long_op); + rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &bytes_returned, + long_op); cifs_stats_inc(&tcon->num_writes); if (rc) { cFYI(1, ("Send error in write = %d", rc)); |