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9P: Add cancelled() to the transport functions.

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And move transport-specific code out of net/9p/client.c

Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
This commit is contained in:
Simon Derr 2014-03-10 16:38:49 +01:00 committed by Eric Van Hensbergen
parent 05a782d416
commit afd8d65411
3 changed files with 23 additions and 6 deletions
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3
include/net/9p/transport.h
View File

@ -40,6 +40,8 @@
* @close: member function to discard a connection on this transport
* @request: member function to issue a request to the transport
* @cancel: member function to cancel a request (if it hasn't been sent)
* @cancelled: member function to notify that a cancelled request will not
* not receive a reply
*
* This is the basic API for a transport module which is registered by the
* transport module with the 9P core network module and used by the client
@ -58,6 +60,7 @@ struct p9_trans_module {
void (*close) (struct p9_client *);
int (*request) (struct p9_client *, struct p9_req_t *req);
int (*cancel) (struct p9_client *, struct p9_req_t *req);
int (*cancelled)(struct p9_client *, struct p9_req_t *req);
int (*zc_request)(struct p9_client *, struct p9_req_t *,
char *, char *, int , int, int, int);
};

9
net/9p/client.c
View File

@ -663,16 +663,13 @@ static int p9_client_flush(struct p9_client *c, struct p9_req_t *oldreq)
if (IS_ERR(req))
return PTR_ERR(req);
/*
* if we haven't received a response for oldreq,
* remove it from the list
*/
if (oldreq->status == REQ_STATUS_FLSH) {
spin_lock(&c->lock);
list_del(&oldreq->req_list);
spin_unlock(&c->lock);
}
if (oldreq->status == REQ_STATUS_FLSH)
if (c->trans_mod->cancelled)
c->trans_mod->cancelled(c, oldreq);
p9_free_req(c, req);
return 0;

17
net/9p/trans_fd.c
View File

@ -709,6 +709,20 @@ static int p9_fd_cancel(struct p9_client *client, struct p9_req_t *req)
return ret;
}
static int p9_fd_cancelled(struct p9_client *client, struct p9_req_t *req)
{
p9_debug(P9_DEBUG_TRANS, "client %p req %p\n", client, req);
/* we haven't received a response for oldreq,
* remove it from the list.
*/
spin_lock(&client->lock);
list_del(&req->req_list);
spin_unlock(&client->lock);
return 0;
}
/**
* parse_opts - parse mount options into p9_fd_opts structure
* @params: options string passed from mount
@ -1050,6 +1064,7 @@ static struct p9_trans_module p9_tcp_trans = {
.close = p9_fd_close,
.request = p9_fd_request,
.cancel = p9_fd_cancel,
.cancelled = p9_fd_cancelled,
.owner = THIS_MODULE,
};
@ -1061,6 +1076,7 @@ static struct p9_trans_module p9_unix_trans = {
.close = p9_fd_close,
.request = p9_fd_request,
.cancel = p9_fd_cancel,
.cancelled = p9_fd_cancelled,
.owner = THIS_MODULE,
};
@ -1072,6 +1088,7 @@ static struct p9_trans_module p9_fd_trans = {
.close = p9_fd_close,
.request = p9_fd_request,
.cancel = p9_fd_cancel,
.cancelled = p9_fd_cancelled,
.owner = THIS_MODULE,
};