diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/svcsock.c | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 2016d9c63f8..5fb537e4d63 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -325,19 +325,21 @@ svc_sock_dequeue(struct svc_pool *pool) } /* - * Having read something from a socket, check whether it - * needs to be re-enqueued. - * Note: XPT_DATA only gets cleared when a read-attempt finds - * no (or insufficient) data. + * svc_xprt_received conditionally queues the transport for processing + * by another thread. The caller must hold the XPT_BUSY bit and must + * not thereafter touch transport data. + * + * Note: XPT_DATA only gets cleared when a read-attempt finds no (or + * insufficient) data. */ -static inline void -svc_sock_received(struct svc_sock *svsk) +void svc_xprt_received(struct svc_xprt *xprt) { - svsk->sk_xprt.xpt_pool = NULL; - clear_bit(XPT_BUSY, &svsk->sk_xprt.xpt_flags); - svc_xprt_enqueue(&svsk->sk_xprt); + BUG_ON(!test_bit(XPT_BUSY, &xprt->xpt_flags)); + xprt->xpt_pool = NULL; + clear_bit(XPT_BUSY, &xprt->xpt_flags); + svc_xprt_enqueue(xprt); } - +EXPORT_SYMBOL_GPL(svc_xprt_received); /** * svc_reserve - change the space reserved for the reply to a request. @@ -766,7 +768,7 @@ svc_udp_recvfrom(struct svc_rqst *rqstp) (serv->sv_nrthreads+3) * serv->sv_max_mesg); if ((rqstp->rq_deferred = svc_deferred_dequeue(svsk))) { - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); return svc_deferred_recv(rqstp); } @@ -783,7 +785,7 @@ svc_udp_recvfrom(struct svc_rqst *rqstp) dprintk("svc: recvfrom returned error %d\n", -err); set_bit(XPT_DATA, &svsk->sk_xprt.xpt_flags); } - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); return -EAGAIN; } rqstp->rq_addrlen = sizeof(rqstp->rq_addr); @@ -798,7 +800,7 @@ svc_udp_recvfrom(struct svc_rqst *rqstp) /* * Maybe more packets - kick another thread ASAP. */ - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); len = skb->len - sizeof(struct udphdr); rqstp->rq_arg.len = len; @@ -1104,7 +1106,7 @@ static struct svc_xprt *svc_tcp_accept(struct svc_xprt *xprt) } memcpy(&newsvsk->sk_local, sin, slen); - svc_sock_received(newsvsk); + svc_xprt_received(&newsvsk->sk_xprt); if (serv->sv_stats) serv->sv_stats->nettcpconn++; @@ -1134,7 +1136,7 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp) test_bit(XPT_CLOSE, &svsk->sk_xprt.xpt_flags)); if ((rqstp->rq_deferred = svc_deferred_dequeue(svsk))) { - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); return svc_deferred_recv(rqstp); } @@ -1174,7 +1176,7 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp) if (len < want) { dprintk("svc: short recvfrom while reading record length (%d of %lu)\n", len, want); - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); return -EAGAIN; /* record header not complete */ } @@ -1210,7 +1212,7 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp) if (len < svsk->sk_reclen) { dprintk("svc: incomplete TCP record (%d of %d)\n", len, svsk->sk_reclen); - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); return -EAGAIN; /* record not complete */ } len = svsk->sk_reclen; @@ -1250,7 +1252,7 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp) svsk->sk_reclen = 0; svsk->sk_tcplen = 0; - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); if (serv->sv_stats) serv->sv_stats->nettcpcnt++; @@ -1263,7 +1265,7 @@ svc_tcp_recvfrom(struct svc_rqst *rqstp) error: if (len == -EAGAIN) { dprintk("RPC: TCP recvfrom got EAGAIN\n"); - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); } else { printk(KERN_NOTICE "%s: recvfrom returned errno %d\n", svsk->sk_xprt.xpt_server->sv_name, -len); @@ -1590,7 +1592,7 @@ svc_recv(struct svc_rqst *rqstp, long timeout) __module_get(newxpt->xpt_class->xcl_owner); svc_check_conn_limits(svsk->sk_xprt.xpt_server); } - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); } else { dprintk("svc: server %p, pool %u, socket %p, inuse=%d\n", rqstp, pool->sp_id, svsk, @@ -1809,7 +1811,7 @@ int svc_addsock(struct svc_serv *serv, else { svsk = svc_setup_socket(serv, so, &err, SVC_SOCK_DEFAULTS); if (svsk) { - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); err = 0; } } @@ -1865,7 +1867,7 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv, } if ((svsk = svc_setup_socket(serv, sock, &error, flags)) != NULL) { - svc_sock_received(svsk); + svc_xprt_received(&svsk->sk_xprt); return (struct svc_xprt *)svsk; } |