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[PATCH] RPC: introduce client-side transport switch
Move the bulk of client-side socket-specific code into a separate source file, net/sunrpc/xprtsock.c. Test-plan: Millions of fsx operations. Performance characterization such as "sio" or "iozone". Destructive testing (unplugging the network temporarily, server reboots). Connectathon with v2, v3, and v4. Version: Thu, 11 Aug 2005 16:03:38 -0400 Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever
Trond Myklebust
parent
094bb20b9f
commit
a246b0105b
@ -165,11 +165,6 @@ extern int csum_partial_copy_to_xdr(struct xdr_buf *, struct sk_buff *);
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extern ssize_t xdr_partial_copy_from_skb(struct xdr_buf *, unsigned int,
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skb_reader_t *, skb_read_actor_t);
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struct socket;
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struct sockaddr;
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extern int xdr_sendpages(struct socket *, struct sockaddr *, int,
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struct xdr_buf *, unsigned int, int);
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extern int xdr_encode_word(struct xdr_buf *, int, u32);
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extern int xdr_decode_word(struct xdr_buf *, int, u32 *);
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@ -59,7 +59,13 @@ extern unsigned int xprt_tcp_slot_table_entries;
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*/
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#define RPC_REESTABLISH_TIMEOUT (15*HZ)
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/* RPC call and reply header size as number of 32bit words (verifier
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/*
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* RPC transport idle timeout.
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*/
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#define RPC_IDLE_DISCONNECT_TIMEOUT (5*60*HZ)
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/*
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* RPC call and reply header size as number of 32bit words (verifier
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* size computed separately)
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*/
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#define RPC_CALLHDRSIZE 6
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@ -121,12 +127,19 @@ struct rpc_rqst {
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#define rq_svec rq_snd_buf.head
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#define rq_slen rq_snd_buf.len
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#define XPRT_LAST_FRAG (1 << 0)
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#define XPRT_COPY_RECM (1 << 1)
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#define XPRT_COPY_XID (1 << 2)
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#define XPRT_COPY_DATA (1 << 3)
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struct rpc_task;
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struct rpc_xprt;
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struct rpc_xprt_ops {
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void (*set_buffer_size)(struct rpc_xprt *xprt);
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void (*connect)(struct rpc_task *task);
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int (*send_request)(struct rpc_task *task);
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void (*close)(struct rpc_xprt *xprt);
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void (*destroy)(struct rpc_xprt *xprt);
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};
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struct rpc_xprt {
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struct rpc_xprt_ops * ops; /* transport methods */
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struct socket * sock; /* BSD socket layer */
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struct sock * inet; /* INET layer */
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@ -199,14 +212,22 @@ struct rpc_xprt {
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wait_queue_head_t cong_wait;
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};
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#define XPRT_LAST_FRAG (1 << 0)
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#define XPRT_COPY_RECM (1 << 1)
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#define XPRT_COPY_XID (1 << 2)
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#define XPRT_COPY_DATA (1 << 3)
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#ifdef __KERNEL__
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struct rpc_xprt * xprt_create_proto(int proto, struct sockaddr_in *addr,
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struct rpc_timeout *toparms);
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void xprt_disconnect(struct rpc_xprt *);
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int xprt_destroy(struct rpc_xprt *);
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void xprt_set_timeout(struct rpc_timeout *, unsigned int,
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unsigned long);
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struct rpc_rqst * xprt_lookup_rqst(struct rpc_xprt *, u32);
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void xprt_complete_rqst(struct rpc_xprt *,
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struct rpc_rqst *, int);
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void xprt_reserve(struct rpc_task *);
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int xprt_prepare_transmit(struct rpc_task *);
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void xprt_transmit(struct rpc_task *);
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@ -214,7 +235,10 @@ void xprt_receive(struct rpc_task *);
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int xprt_adjust_timeout(struct rpc_rqst *req);
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void xprt_release(struct rpc_task *);
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void xprt_connect(struct rpc_task *);
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void xprt_sock_setbufsize(struct rpc_xprt *);
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int xs_setup_udp(struct rpc_xprt *,
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struct rpc_timeout *);
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int xs_setup_tcp(struct rpc_xprt *,
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struct rpc_timeout *);
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#define XPRT_LOCKED 0
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#define XPRT_CONNECT 1
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@ -6,7 +6,7 @@
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obj-$(CONFIG_SUNRPC) += sunrpc.o
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obj-$(CONFIG_SUNRPC_GSS) += auth_gss/
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sunrpc-y := clnt.o xprt.o socklib.o sched.o \
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sunrpc-y := clnt.o xprt.o socklib.o xprtsock.o sched.o \
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auth.o auth_null.o auth_unix.o \
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svc.o svcsock.o svcauth.o svcauth_unix.o \
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pmap_clnt.o timer.o xdr.o \
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@ -525,8 +525,7 @@ rpc_setbufsize(struct rpc_clnt *clnt, unsigned int sndsize, unsigned int rcvsize
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xprt->rcvsize = 0;
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if (rcvsize)
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xprt->rcvsize = rcvsize + RPC_SLACK_SPACE;
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if (xprt_connected(xprt))
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xprt_sock_setbufsize(xprt);
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xprt->ops->set_buffer_size(xprt);
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}
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/*
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@ -119,6 +119,9 @@ done:
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return 0;
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}
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unsigned int xprt_udp_slot_table_entries = RPC_DEF_SLOT_TABLE;
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unsigned int xprt_tcp_slot_table_entries = RPC_DEF_SLOT_TABLE;
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static unsigned int min_slot_table_size = RPC_MIN_SLOT_TABLE;
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static unsigned int max_slot_table_size = RPC_MAX_SLOT_TABLE;
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102
net/sunrpc/xdr.c
102
net/sunrpc/xdr.c
@ -6,15 +6,12 @@
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* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/socket.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/pagemap.h>
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#include <linux/errno.h>
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#include <linux/in.h>
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#include <linux/net.h>
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#include <net/sock.h>
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#include <linux/sunrpc/xdr.h>
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#include <linux/sunrpc/msg_prot.h>
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@ -177,103 +174,6 @@ xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
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}
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int
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xdr_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen,
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struct xdr_buf *xdr, unsigned int base, int msgflags)
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{
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struct page **ppage = xdr->pages;
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unsigned int len, pglen = xdr->page_len;
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int err, ret = 0;
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ssize_t (*sendpage)(struct socket *, struct page *, int, size_t, int);
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len = xdr->head[0].iov_len;
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if (base < len || (addr != NULL && base == 0)) {
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struct kvec iov = {
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.iov_base = xdr->head[0].iov_base + base,
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.iov_len = len - base,
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};
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struct msghdr msg = {
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.msg_name = addr,
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.msg_namelen = addrlen,
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.msg_flags = msgflags,
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};
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if (xdr->len > len)
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msg.msg_flags |= MSG_MORE;
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if (iov.iov_len != 0)
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err = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
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else
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err = kernel_sendmsg(sock, &msg, NULL, 0, 0);
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if (ret == 0)
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ret = err;
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else if (err > 0)
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ret += err;
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if (err != iov.iov_len)
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goto out;
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base = 0;
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} else
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base -= len;
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if (pglen == 0)
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goto copy_tail;
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if (base >= pglen) {
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base -= pglen;
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goto copy_tail;
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}
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if (base || xdr->page_base) {
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pglen -= base;
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base += xdr->page_base;
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ppage += base >> PAGE_CACHE_SHIFT;
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base &= ~PAGE_CACHE_MASK;
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}
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sendpage = sock->ops->sendpage ? : sock_no_sendpage;
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do {
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int flags = msgflags;
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len = PAGE_CACHE_SIZE;
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if (base)
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len -= base;
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if (pglen < len)
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len = pglen;
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if (pglen != len || xdr->tail[0].iov_len != 0)
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flags |= MSG_MORE;
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/* Hmm... We might be dealing with highmem pages */
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if (PageHighMem(*ppage))
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sendpage = sock_no_sendpage;
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err = sendpage(sock, *ppage, base, len, flags);
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if (ret == 0)
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ret = err;
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else if (err > 0)
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ret += err;
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if (err != len)
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goto out;
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base = 0;
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ppage++;
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} while ((pglen -= len) != 0);
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copy_tail:
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len = xdr->tail[0].iov_len;
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if (base < len) {
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struct kvec iov = {
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.iov_base = xdr->tail[0].iov_base + base,
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.iov_len = len - base,
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};
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struct msghdr msg = {
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.msg_flags = msgflags,
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};
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err = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
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if (ret == 0)
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ret = err;
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else if (err > 0)
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ret += err;
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}
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out:
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return ret;
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}
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/*
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* Helper routines for doing 'memmove' like operations on a struct xdr_buf
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*
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File diff suppressed because it is too large
Load Diff
1021
net/sunrpc/xprtsock.c
Normal file
1021
net/sunrpc/xprtsock.c
Normal file
File diff suppressed because it is too large
Load Diff
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