diff options
| author | Chuck Lever <cel@netapp.com> | 2005-08-26 03:25:49 +0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-09-23 20:38:33 +0400 |
| commit | 808012fbb23a52ec59352445d2076d175ad4ab26 (patch) | |
| tree | 7175edb3917bc35f7f5484f567e91d7303a17663 /net/sunrpc/xprtsock.c | |
| parent | 262965f53defd312a294b45366ea17907b6a616b (diff) | |
| download | linux-808012fbb23a52ec59352445d2076d175ad4ab26.tar.xz | |
[PATCH] RPC: skip over transport-specific heads automatically
Add a generic mechanism for skipping over transport-specific headers
when constructing an RPC request. This removes another "xprt->stream"
dependency.
Test-plan:
Write-intensive workload on a single mount point (try both UDP and
TCP).
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/xprtsock.c')
| -rw-r--r-- | net/sunrpc/xprtsock.c | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 57988300640a..aaf053b1a0c4 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -282,6 +282,13 @@ static int xs_udp_send_request(struct rpc_task *task) return status; } +static inline void xs_encode_tcp_record_marker(struct xdr_buf *buf) +{ + u32 reclen = buf->len - sizeof(rpc_fraghdr); + rpc_fraghdr *base = buf->head[0].iov_base; + *base = htonl(RPC_LAST_STREAM_FRAGMENT | reclen); +} + /** * xs_tcp_send_request - write an RPC request to a TCP socket * @task: address of RPC task that manages the state of an RPC request @@ -301,11 +308,9 @@ static int xs_tcp_send_request(struct rpc_task *task) struct rpc_rqst *req = task->tk_rqstp; struct rpc_xprt *xprt = req->rq_xprt; struct xdr_buf *xdr = &req->rq_snd_buf; - u32 *marker = req->rq_svec[0].iov_base; int status, retry = 0; - /* Write the record marker */ - *marker = htonl(0x80000000|(req->rq_slen-sizeof(*marker))); + xs_encode_tcp_record_marker(&req->rq_snd_buf); xs_pktdump("packet data:", req->rq_svec->iov_base, @@ -503,16 +508,19 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, skb_reader_t *desc xprt->tcp_offset += used; if (used != len) return; + xprt->tcp_reclen = ntohl(xprt->tcp_recm); - if (xprt->tcp_reclen & 0x80000000) + if (xprt->tcp_reclen & RPC_LAST_STREAM_FRAGMENT) xprt->tcp_flags |= XPRT_LAST_FRAG; else xprt->tcp_flags &= ~XPRT_LAST_FRAG; - xprt->tcp_reclen &= 0x7fffffff; + xprt->tcp_reclen &= RPC_FRAGMENT_SIZE_MASK; + xprt->tcp_flags &= ~XPRT_COPY_RECM; xprt->tcp_offset = 0; + /* Sanity check of the record length */ - if (xprt->tcp_reclen < 4) { + if (unlikely(xprt->tcp_reclen < 4)) { dprintk("RPC: invalid TCP record fragment length\n"); xprt_disconnect(xprt); return; @@ -1065,6 +1073,7 @@ int xs_setup_udp(struct rpc_xprt *xprt, struct rpc_timeout *to) xprt->prot = IPPROTO_UDP; xprt->port = XS_MAX_RESVPORT; + xprt->tsh_size = 0; xprt->stream = 0; xprt->nocong = 0; xprt->cwnd = RPC_INITCWND; @@ -1105,11 +1114,12 @@ int xs_setup_tcp(struct rpc_xprt *xprt, struct rpc_timeout *to) xprt->prot = IPPROTO_TCP; xprt->port = XS_MAX_RESVPORT; + xprt->tsh_size = sizeof(rpc_fraghdr) / sizeof(u32); xprt->stream = 1; xprt->nocong = 1; xprt->cwnd = RPC_MAXCWND(xprt); xprt->resvport = capable(CAP_NET_BIND_SERVICE) ? 1 : 0; - xprt->max_payload = (1U << 31) - 1; + xprt->max_payload = RPC_MAX_FRAGMENT_SIZE; INIT_WORK(&xprt->connect_worker, xs_tcp_connect_worker, xprt); |