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[PATCH] RPC: rationalize set_buffer_size

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In fact, ->set_buffer_size should be completely functionless for non-UDP.

 Test-plan:
 Check socket buffer size on UDP sockets over time.

 Signed-off-by: Chuck Lever <cel@netapp.com>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2005-08-25 16:25:56 -07:00 committed by Trond Myklebust
parent 03bf4b707e
commit 470056c288
3 changed files with 19 additions and 25 deletions
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4
include/linux/sunrpc/xprt.h
View File

@ -100,7 +100,7 @@ struct rpc_rqst {
#define rq_slen rq_snd_buf.len
struct rpc_xprt_ops {
void (*set_buffer_size)(struct rpc_xprt *xprt);
void (*set_buffer_size)(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize);
int (*reserve_xprt)(struct rpc_task *task);
void (*release_xprt)(struct rpc_xprt *xprt, struct rpc_task *task);
void (*connect)(struct rpc_task *task);
@ -124,7 +124,7 @@ struct rpc_xprt {
unsigned long cong; /* current congestion */
unsigned long cwnd; /* congestion window */
unsigned int rcvsize, /* transport rcv buffer size */
size_t rcvsize, /* transport rcv buffer size */
sndsize; /* transport send buffer size */
size_t max_payload; /* largest RPC payload size,

10
net/sunrpc/clnt.c
View File

@ -517,14 +517,8 @@ void
rpc_setbufsize(struct rpc_clnt *clnt, unsigned int sndsize, unsigned int rcvsize)
{
struct rpc_xprt *xprt = clnt->cl_xprt;
xprt->sndsize = 0;
if (sndsize)
xprt->sndsize = sndsize + RPC_SLACK_SPACE;
xprt->rcvsize = 0;
if (rcvsize)
xprt->rcvsize = rcvsize + RPC_SLACK_SPACE;
xprt->ops->set_buffer_size(xprt);
if (xprt->ops->set_buffer_size)
xprt->ops->set_buffer_size(xprt, sndsize, rcvsize);
}
/*

30
net/sunrpc/xprtsock.c
View File

@ -865,15 +865,7 @@ static void xs_tcp_write_space(struct sock *sk)
read_unlock(&sk->sk_callback_lock);
}
/**
* xs_udp_set_buffer_size - set send and receive limits
* @xprt: generic transport
*
* Set socket send and receive limits based on the
* sndsize and rcvsize fields in the generic transport
* structure.
*/
static void xs_udp_set_buffer_size(struct rpc_xprt *xprt)
static void xs_udp_do_set_buffer_size(struct rpc_xprt *xprt)
{
struct sock *sk = xprt->inet;
@ -889,14 +881,23 @@ static void xs_udp_set_buffer_size(struct rpc_xprt *xprt)
}
/**
* xs_tcp_set_buffer_size - set send and receive limits
* xs_udp_set_buffer_size - set send and receive limits
* @xprt: generic transport
* @sndsize: requested size of send buffer, in bytes
* @rcvsize: requested size of receive buffer, in bytes
*
* Nothing to do for TCP.
* Set socket send and receive buffer size limits.
*/
static void xs_tcp_set_buffer_size(struct rpc_xprt *xprt)
static void xs_udp_set_buffer_size(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize)
{
return;
xprt->sndsize = 0;
if (sndsize)
xprt->sndsize = sndsize + 1024;
xprt->rcvsize = 0;
if (rcvsize)
xprt->rcvsize = rcvsize + 1024;
xs_udp_do_set_buffer_size(xprt);
}
/**
@ -989,7 +990,7 @@ static void xs_udp_connect_worker(void *args)
write_unlock_bh(&sk->sk_callback_lock);
}
xs_udp_set_buffer_size(xprt);
xs_udp_do_set_buffer_size(xprt);
status = 0;
out:
xprt_wake_pending_tasks(xprt, status);
@ -1158,7 +1159,6 @@ static struct rpc_xprt_ops xs_udp_ops = {
};
static struct rpc_xprt_ops xs_tcp_ops = {
.set_buffer_size = xs_tcp_set_buffer_size,
.reserve_xprt = xprt_reserve_xprt,
.release_xprt = xprt_release_xprt,
.connect = xs_connect,