The patch titled
knfsd: SUNRPC: Cache remote peer's address in svc_sock
has been added to the -mm tree. Its filename is
knfsd-sunrpc-cache-remote-peers-address-in-svc_sock.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: knfsd: SUNRPC: Cache remote peer's address in svc_sock
From: Chuck Lever <chuck.lever@xxxxxxxxxx>
The remote peer's address won't change after the socket has been accepted. We
don't need to call ->getname on every incoming request.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Cc: Aurelien Charbon <aurelien.charbon@xxxxxxxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/sunrpc/svcsock.h | 3 +++
net/sunrpc/svcsock.c | 11 +++++------
2 files changed, 8 insertions(+), 6 deletions(-)
diff -puN include/linux/sunrpc/svcsock.h~knfsd-sunrpc-cache-remote-peers-address-in-svc_sock include/linux/sunrpc/svcsock.h
--- a/include/linux/sunrpc/svcsock.h~knfsd-sunrpc-cache-remote-peers-address-in-svc_sock
+++ a/include/linux/sunrpc/svcsock.h
@@ -57,6 +57,9 @@ struct svc_sock {
/* cache of various info for TCP sockets */
void *sk_info_authunix;
+
+ struct sockaddr_storage sk_remote; /* remote peer's address */
+ int sk_remotelen; /* length of address */
};
/*
diff -puN net/sunrpc/svcsock.c~knfsd-sunrpc-cache-remote-peers-address-in-svc_sock net/sunrpc/svcsock.c
--- a/net/sunrpc/svcsock.c~knfsd-sunrpc-cache-remote-peers-address-in-svc_sock
+++ a/net/sunrpc/svcsock.c
@@ -577,11 +577,9 @@ svc_recvfrom(struct svc_rqst *rqstp, str
len = kernel_recvmsg(sock, &msg, iov, nr, buflen, MSG_DONTWAIT);
/* sock_recvmsg doesn't fill in the name/namelen, so we must..
- * possibly we should cache this in the svc_sock structure
- * at accept time. FIXME
*/
- alen = sizeof(rqstp->rq_addr);
- kernel_getpeername(sock, (struct sockaddr *)&rqstp->rq_addr, &alen);
+ memcpy(&rqstp->rq_addr, &svsk->sk_remote, svsk->sk_remotelen);
+ rqstp->rq_addrlen = svsk->sk_remotelen;
dprintk("svc: socket %p recvfrom(%p, %Zu) = %d\n",
rqstp->rq_sock, iov[0].iov_base, iov[0].iov_len, len);
@@ -873,7 +871,7 @@ svc_tcp_accept(struct svc_sock *svsk)
struct socket *sock = svsk->sk_sock;
struct socket *newsock;
struct svc_sock *newsvsk;
- int err, slen;
+ int err, slen = 0;
dprintk("svc: tcp_accept %p sock %p\n", svsk, sock);
if (!sock)
@@ -925,7 +923,8 @@ svc_tcp_accept(struct svc_sock *svsk)
if (!(newsvsk = svc_setup_socket(serv, newsock, &err,
(SVC_SOCK_ANONYMOUS | SVC_SOCK_TEMPORARY))))
goto failed;
-
+ memcpy(&newsvsk->sk_remote, &sin, slen);
+ newsvsk->sk_remotelen = slen;
/* make sure that we don't have too many active connections.
* If we have, something must be dropped.
_
Patches currently in -mm which might be from chuck.lever@xxxxxxxxxx are
origin.patch
knfsd-sunrpc-update-internal-api-separate-pmap-register-and-temp-sockets.patch
knfsd-sunrpc-allow-creating-an-rpc-service-without-registering-with-portmapper.patch
knfsd-sunrpc-cache-remote-peers-address-in-svc_sock.patch
knfsd-sunrpc-dont-set-msg_name-and-msg_namelen-when-calling-sock_recvmsg.patch
knfsd-sunrpc-use-sockaddr_storage-to-store-address-in-svc_deferred_req.patch
knfsd-sunrpc-add-a-function-to-format-the-address-in-an-svc_rqst-for-printing.patch
knfsd-sunrpc-provide-room-in-svc_rqst-for-larger-addresses.patch
knfsd-sunrpc-make-rq_daddr-field-address-version-independent.patch
knfsd-sunrpc-teach-svc_sendto-to-deal-with-ipv6-addresses.patch
knfsd-sunrpc-add-a-generic-function-to-see-if-the-peer-uses-a-secure-port.patch
knfsd-sunrpc-support-ipv6-addresses-in-svc_tcp_accept.patch
knfsd-sunrpc-support-ipv6-addresses-in-rpc-servers-udp-receive-path.patch
knfsd-sunrpc-fix-up-svc_create_socket-to-take-a-sockaddr-struct-length.patch
-
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