From c36adb2a7f9132b37d4b669b2e2c04e46d5188b2 Mon Sep 17 00:00:00 2001 From: Tom Tucker Date: Sun, 30 Dec 2007 21:08:16 -0600 Subject: [PATCH] svc: Make svc_recv transport neutral All of the transport field and functions used by svc_recv are now transport independent. Change the svc_recv function to use the svc_xprt structure directly instead of the transport specific svc_sock structure. Signed-off-by: Tom Tucker Acked-by: Neil Brown Reviewed-by: Chuck Lever Reviewed-by: Greg Banks Signed-off-by: J. Bruce Fields --- net/sunrpc/svcsock.c | 63 ++++++++++++++++++++++---------------------- 1 file changed, 32 insertions(+), 31 deletions(-) diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 355ab8da54..fa57e9bc68 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -310,22 +310,21 @@ EXPORT_SYMBOL_GPL(svc_xprt_enqueue); /* * Dequeue the first socket. Must be called with the pool->sp_lock held. */ -static inline struct svc_sock * -svc_sock_dequeue(struct svc_pool *pool) +static struct svc_xprt *svc_xprt_dequeue(struct svc_pool *pool) { - struct svc_sock *svsk; + struct svc_xprt *xprt; if (list_empty(&pool->sp_sockets)) return NULL; - svsk = list_entry(pool->sp_sockets.next, - struct svc_sock, sk_xprt.xpt_ready); - list_del_init(&svsk->sk_xprt.xpt_ready); + xprt = list_entry(pool->sp_sockets.next, + struct svc_xprt, xpt_ready); + list_del_init(&xprt->xpt_ready); - dprintk("svc: socket %p dequeued, inuse=%d\n", - svsk->sk_sk, atomic_read(&svsk->sk_xprt.xpt_ref.refcount)); + dprintk("svc: transport %p dequeued, inuse=%d\n", + xprt, atomic_read(&xprt->xpt_ref.refcount)); - return svsk; + return xprt; } /* @@ -1475,20 +1474,20 @@ static void svc_check_conn_limits(struct svc_serv *serv) int svc_recv(struct svc_rqst *rqstp, long timeout) { - struct svc_sock *svsk = NULL; + struct svc_xprt *xprt = NULL; struct svc_serv *serv = rqstp->rq_server; struct svc_pool *pool = rqstp->rq_pool; int len, i; - int pages; + int pages; struct xdr_buf *arg; DECLARE_WAITQUEUE(wait, current); dprintk("svc: server %p waiting for data (to = %ld)\n", rqstp, timeout); - if (rqstp->rq_sock) + if (rqstp->rq_xprt) printk(KERN_ERR - "svc_recv: service %p, socket not NULL!\n", + "svc_recv: service %p, transport not NULL!\n", rqstp); if (waitqueue_active(&rqstp->rq_wait)) printk(KERN_ERR @@ -1525,11 +1524,12 @@ svc_recv(struct svc_rqst *rqstp, long timeout) return -EINTR; spin_lock_bh(&pool->sp_lock); - if ((svsk = svc_sock_dequeue(pool)) != NULL) { - rqstp->rq_sock = svsk; - svc_xprt_get(&svsk->sk_xprt); + xprt = svc_xprt_dequeue(pool); + if (xprt) { + rqstp->rq_xprt = xprt; + svc_xprt_get(xprt); rqstp->rq_reserved = serv->sv_max_mesg; - atomic_add(rqstp->rq_reserved, &svsk->sk_xprt.xpt_reserved); + atomic_add(rqstp->rq_reserved, &xprt->xpt_reserved); } else { /* No data pending. Go to sleep */ svc_thread_enqueue(pool, rqstp); @@ -1549,7 +1549,8 @@ svc_recv(struct svc_rqst *rqstp, long timeout) spin_lock_bh(&pool->sp_lock); remove_wait_queue(&rqstp->rq_wait, &wait); - if (!(svsk = rqstp->rq_sock)) { + xprt = rqstp->rq_xprt; + if (!xprt) { svc_thread_dequeue(pool, rqstp); spin_unlock_bh(&pool->sp_lock); dprintk("svc: server %p, no data yet\n", rqstp); @@ -1559,32 +1560,32 @@ svc_recv(struct svc_rqst *rqstp, long timeout) spin_unlock_bh(&pool->sp_lock); len = 0; - if (test_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags)) { + if (test_bit(XPT_CLOSE, &xprt->xpt_flags)) { dprintk("svc_recv: found XPT_CLOSE\n"); - svc_delete_xprt(&svsk->sk_xprt); - } else if (test_bit(XPT_LISTENER, &svsk->sk_xprt.xpt_flags)) { + svc_delete_xprt(xprt); + } else if (test_bit(XPT_LISTENER, &xprt->xpt_flags)) { struct svc_xprt *newxpt; - newxpt = svsk->sk_xprt.xpt_ops->xpo_accept(&svsk->sk_xprt); + newxpt = xprt->xpt_ops->xpo_accept(xprt); if (newxpt) { /* * We know this module_get will succeed because the * listener holds a reference too */ __module_get(newxpt->xpt_class->xcl_owner); - svc_check_conn_limits(svsk->sk_xprt.xpt_server); + svc_check_conn_limits(xprt->xpt_server); svc_xprt_received(newxpt); } - svc_xprt_received(&svsk->sk_xprt); + svc_xprt_received(xprt); } else { - dprintk("svc: server %p, pool %u, socket %p, inuse=%d\n", - rqstp, pool->sp_id, svsk, - atomic_read(&svsk->sk_xprt.xpt_ref.refcount)); - rqstp->rq_deferred = svc_deferred_dequeue(&svsk->sk_xprt); + dprintk("svc: server %p, pool %u, transport %p, inuse=%d\n", + rqstp, pool->sp_id, xprt, + atomic_read(&xprt->xpt_ref.refcount)); + rqstp->rq_deferred = svc_deferred_dequeue(xprt); if (rqstp->rq_deferred) { - svc_xprt_received(&svsk->sk_xprt); + svc_xprt_received(xprt); len = svc_deferred_recv(rqstp); } else - len = svsk->sk_xprt.xpt_ops->xpo_recvfrom(rqstp); + len = xprt->xpt_ops->xpo_recvfrom(rqstp); dprintk("svc: got len=%d\n", len); } @@ -1594,7 +1595,7 @@ svc_recv(struct svc_rqst *rqstp, long timeout) svc_xprt_release(rqstp); return -EAGAIN; } - clear_bit(XPT_OLD, &svsk->sk_xprt.xpt_flags); + clear_bit(XPT_OLD, &xprt->xpt_flags); rqstp->rq_secure = svc_port_is_privileged(svc_addr(rqstp)); rqstp->rq_chandle.defer = svc_defer; -- 2.39.5