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authorPavel Shilovsky <pshilov@microsoft.com>2019-01-16 11:22:29 -0800
committerSteve French <stfrench@microsoft.com>2019-03-05 18:10:01 -0600
commit34f4deb7c56c6fdc77a7e414203f0045bb6db32b (patch)
treefccaedae956555872001adad932ac8a4a1da99ea /fs/cifs/smb2pdu.c
parent335b7b62ffb69d18055f2bb6f3a029263a07c735 (diff)
downloadlinux-34f4deb7c56c6fdc77a7e414203f0045bb6db32b.tar.bz2
CIFS: Respect reconnect in non-MTU credits calculations
Every time after a session reconnect we don't need to account for credits obtained in previous sessions. Make use of the recently added cifs_credits structure to properly calculate credits for non-MTU requests the same way we did for MTU ones. Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/smb2pdu.c')
-rw-r--r--fs/cifs/smb2pdu.c33
1 files changed, 20 insertions, 13 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 04581f06f29f..7d8f1d234906 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2933,14 +2933,16 @@ smb2_echo_callback(struct mid_q_entry *mid)
{
struct TCP_Server_Info *server = mid->callback_data;
struct smb2_echo_rsp *rsp = (struct smb2_echo_rsp *)mid->resp_buf;
- unsigned int credits_received = 0;
+ struct cifs_credits credits = { .value = 0, .instance = 0 };
if (mid->mid_state == MID_RESPONSE_RECEIVED
- || mid->mid_state == MID_RESPONSE_MALFORMED)
- credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest);
+ || mid->mid_state == MID_RESPONSE_MALFORMED) {
+ credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
+ credits.instance = server->reconnect_instance;
+ }
DeleteMidQEntry(mid);
- add_credits(server, credits_received, CIFS_ECHO_OP);
+ add_credits(server, &credits, CIFS_ECHO_OP);
}
void smb2_reconnect_server(struct work_struct *work)
@@ -3193,7 +3195,7 @@ smb2_readv_callback(struct mid_q_entry *mid)
struct TCP_Server_Info *server = tcon->ses->server;
struct smb2_sync_hdr *shdr =
(struct smb2_sync_hdr *)rdata->iov[0].iov_base;
- unsigned int credits_received = 0;
+ struct cifs_credits credits = { .value = 0, .instance = 0 };
struct smb_rqst rqst = { .rq_iov = rdata->iov,
.rq_nvec = 2,
.rq_pages = rdata->pages,
@@ -3208,7 +3210,8 @@ smb2_readv_callback(struct mid_q_entry *mid)
switch (mid->mid_state) {
case MID_RESPONSE_RECEIVED:
- credits_received = le16_to_cpu(shdr->CreditRequest);
+ credits.value = le16_to_cpu(shdr->CreditRequest);
+ credits.instance = server->reconnect_instance;
/* result already set, check signature */
if (server->sign && !mid->decrypted) {
int rc;
@@ -3233,7 +3236,8 @@ smb2_readv_callback(struct mid_q_entry *mid)
cifs_stats_bytes_read(tcon, rdata->got_bytes);
break;
case MID_RESPONSE_MALFORMED:
- credits_received = le16_to_cpu(shdr->CreditRequest);
+ credits.value = le16_to_cpu(shdr->CreditRequest);
+ credits.instance = server->reconnect_instance;
/* fall through */
default:
rdata->result = -EIO;
@@ -3263,7 +3267,7 @@ smb2_readv_callback(struct mid_q_entry *mid)
queue_work(cifsiod_wq, &rdata->work);
DeleteMidQEntry(mid);
- add_credits(server, credits_received, 0);
+ add_credits(server, &credits, 0);
}
/* smb2_async_readv - send an async read, and set up mid to handle result */
@@ -3435,14 +3439,16 @@ smb2_writev_callback(struct mid_q_entry *mid)
{
struct cifs_writedata *wdata = mid->callback_data;
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
+ struct TCP_Server_Info *server = tcon->ses->server;
unsigned int written;
struct smb2_write_rsp *rsp = (struct smb2_write_rsp *)mid->resp_buf;
- unsigned int credits_received = 0;
+ struct cifs_credits credits = { .value = 0, .instance = 0 };
switch (mid->mid_state) {
case MID_RESPONSE_RECEIVED:
- credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest);
- wdata->result = smb2_check_receive(mid, tcon->ses->server, 0);
+ credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
+ credits.instance = server->reconnect_instance;
+ wdata->result = smb2_check_receive(mid, server, 0);
if (wdata->result != 0)
break;
@@ -3466,7 +3472,8 @@ smb2_writev_callback(struct mid_q_entry *mid)
wdata->result = -EAGAIN;
break;
case MID_RESPONSE_MALFORMED:
- credits_received = le16_to_cpu(rsp->sync_hdr.CreditRequest);
+ credits.value = le16_to_cpu(rsp->sync_hdr.CreditRequest);
+ credits.instance = server->reconnect_instance;
/* fall through */
default:
wdata->result = -EIO;
@@ -3499,7 +3506,7 @@ smb2_writev_callback(struct mid_q_entry *mid)
queue_work(cifsiod_wq, &wdata->work);
DeleteMidQEntry(mid);
- add_credits(tcon->ses->server, credits_received, 0);
+ add_credits(server, &credits, 0);
}
/* smb2_async_writev - send an async write, and set up mid to handle result */