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authorTom Tucker <tom@opengridcomputing.com>2007-12-30 21:07:29 -0600
committerJ. Bruce Fields <bfields@citi.umich.edu>2008-02-01 16:42:08 -0500
commite831fe65b10199e1e301a7316c66d6ced133712d (patch)
tree33436ef94e099e854c4824e78cd62f341e5f357a /net
parent755cceaba7555027e61dfa79f1e55bdfc6906633 (diff)
svc: Add xpo_prep_reply_hdr
Some transports add fields to the RPC header for replies, e.g. the TCP record length. This function is called when preparing the reply header to allow each transport to add whatever fields it requires. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Acked-by: Neil Brown <neilb@suse.de> Reviewed-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Greg Banks <gnb@sgi.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'net')
-rw-r--r--net/sunrpc/svc.c6
-rw-r--r--net/sunrpc/svcsock.c17
2 files changed, 20 insertions, 3 deletions
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 94eed9b8003..8281a040265 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -840,9 +840,9 @@ svc_process(struct svc_rqst *rqstp)
rqstp->rq_res.tail[0].iov_len = 0;
/* Will be turned off only in gss privacy case: */
rqstp->rq_splice_ok = 1;
- /* tcp needs a space for the record length... */
- if (rqstp->rq_prot == IPPROTO_TCP)
- svc_putnl(resv, 0);
+
+ /* Setup reply header */
+ rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(rqstp);
rqstp->rq_xid = svc_getu32(argv);
svc_putu32(resv, rqstp->rq_xid);
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 44a729d6efe..492a1dc544f 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -893,12 +893,17 @@ svc_udp_sendto(struct svc_rqst *rqstp)
return error;
}
+static void svc_udp_prep_reply_hdr(struct svc_rqst *rqstp)
+{
+}
+
static struct svc_xprt_ops svc_udp_ops = {
.xpo_recvfrom = svc_udp_recvfrom,
.xpo_sendto = svc_udp_sendto,
.xpo_release_rqst = svc_release_skb,
.xpo_detach = svc_sock_detach,
.xpo_free = svc_sock_free,
+ .xpo_prep_reply_hdr = svc_udp_prep_reply_hdr,
};
static struct svc_xprt_class svc_udp_class = {
@@ -1350,12 +1355,24 @@ svc_tcp_sendto(struct svc_rqst *rqstp)
return sent;
}
+/*
+ * Setup response header. TCP has a 4B record length field.
+ */
+static void svc_tcp_prep_reply_hdr(struct svc_rqst *rqstp)
+{
+ struct kvec *resv = &rqstp->rq_res.head[0];
+
+ /* tcp needs a space for the record length... */
+ svc_putnl(resv, 0);
+}
+
static struct svc_xprt_ops svc_tcp_ops = {
.xpo_recvfrom = svc_tcp_recvfrom,
.xpo_sendto = svc_tcp_sendto,
.xpo_release_rqst = svc_release_skb,
.xpo_detach = svc_sock_detach,
.xpo_free = svc_sock_free,
+ .xpo_prep_reply_hdr = svc_tcp_prep_reply_hdr,
};
static struct svc_xprt_class svc_tcp_class = {