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[PATCH] knfsd: SUNRPC: Add a function to format the address in an svc_rqst for printing

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There are loads of places where the RPC server assumes that the rq_addr fields
contains an IPv4 address.  Top among these are error and debugging messages
that display the server's IP address.

Let's refactor the address printing into a separate function that's smart
enough to figure out the difference between IPv4 and IPv6 addresses.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Chuck Lever
2007-02-12 00:53:32 -08:00
committed by Linus Torvalds
parent 1ba951053f
commit ad06e4bd62
8 changed files with 86 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
net/sunrpc/svcsock.c
View File

@@ -41,6 +41,7 @@
#include <asm/ioctls.h>
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/sunrpc/stats.h>
@@ -121,6 +122,41 @@ static inline void svc_reclassify_socket(struct socket *sock)
}
#endif
static char *__svc_print_addr(struct sockaddr *addr, char *buf, size_t len)
{
switch (addr->sa_family) {
case AF_INET:
snprintf(buf, len, "%u.%u.%u.%u, port=%u",
NIPQUAD(((struct sockaddr_in *) addr)->sin_addr),
htons(((struct sockaddr_in *) addr)->sin_port));
break;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case AF_INET6:
snprintf(buf, len, "%x:%x:%x:%x:%x:%x:%x:%x, port=%u",
NIP6(((struct sockaddr_in6 *) addr)->sin6_addr),
htons(((struct sockaddr_in6 *) addr)->sin6_port));
break;
#endif
default:
snprintf(buf, len, "unknown address type: %d", addr->sa_family);
break;
}
return buf;
}
/**
* svc_print_addr - Format rq_addr field for printing
* @rqstp: svc_rqst struct containing address to print
* @buf: target buffer for formatted address
* @len: length of target buffer
*
*/
char *svc_print_addr(struct svc_rqst *rqstp, char *buf, size_t len)
{
return __svc_print_addr((struct sockaddr *) &rqstp->rq_addr, buf, len);
}
EXPORT_SYMBOL_GPL(svc_print_addr);
/*
* Queue up an idle server thread. Must have pool->sp_lock held.
* Note: this is really a stack rather than a queue, so that we only
@@ -429,6 +465,7 @@ svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
size_t base = xdr->page_base;
unsigned int pglen = xdr->page_len;
unsigned int flags = MSG_MORE;
char buf[RPC_MAX_ADDRBUFLEN];
slen = xdr->len;
@@ -491,9 +528,9 @@ svc_sendto(struct svc_rqst *rqstp, struct xdr_buf *xdr)
len += result;
}
out:
dprintk("svc: socket %p sendto([%p %Zu... ], %d) = %d (addr %x)\n",
rqstp->rq_sock, xdr->head[0].iov_base, xdr->head[0].iov_len, xdr->len, len,
rqstp->rq_addr.sin_addr.s_addr);
dprintk("svc: socket %p sendto([%p %Zu... ], %d) = %d (addr %s)\n",
rqstp->rq_sock, xdr->head[0].iov_base, xdr->head[0].iov_len,
xdr->len, len, svc_print_addr(rqstp, buf, sizeof(buf)));
return len;
}
@@ -878,6 +915,7 @@ svc_tcp_accept(struct svc_sock *svsk)
struct socket *newsock;
struct svc_sock *newsvsk;
int err, slen;
char buf[RPC_MAX_ADDRBUFLEN];
dprintk("svc: tcp_accept %p sock %p\n", svsk, sock);
if (!sock)
@@ -908,18 +946,19 @@ svc_tcp_accept(struct svc_sock *svsk)
}
/* Ideally, we would want to reject connections from unauthorized
* hosts here, but when we get encription, the IP of the host won't
* tell us anything. For now just warn about unpriv connections.
* hosts here, but when we get encryption, the IP of the host won't
* tell us anything. For now just warn about unpriv connections.
*/
if (ntohs(sin.sin_port) >= 1024) {
dprintk(KERN_WARNING
"%s: connect from unprivileged port: %u.%u.%u.%u:%d\n",
"%s: connect from unprivileged port: %s\n",
serv->sv_name,
NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port));
__svc_print_addr((struct sockaddr *) &sin, buf,
sizeof(buf)));
}
dprintk("%s: connect from %u.%u.%u.%u:%04x\n", serv->sv_name,
NIPQUAD(sin.sin_addr.s_addr), ntohs(sin.sin_port));
dprintk("%s: connect from %s\n", serv->sv_name,
__svc_print_addr((struct sockaddr *) &sin, buf,
sizeof(buf)));
/* make sure that a write doesn't block forever when
* low on memory
@@ -955,11 +994,9 @@ svc_tcp_accept(struct svc_sock *svsk)
"sockets, consider increasing the "
"number of nfsd threads\n",
serv->sv_name);
printk(KERN_NOTICE "%s: last TCP connect from "
"%u.%u.%u.%u:%d\n",
serv->sv_name,
NIPQUAD(sin.sin_addr.s_addr),
ntohs(sin.sin_port));
printk(KERN_NOTICE
"%s: last TCP connect from %s\n",
serv->sv_name, buf);
}
/*
* Always select the oldest socket. It's not fair,
@@ -1587,11 +1624,12 @@ static int svc_create_socket(struct svc_serv *serv, int protocol,
struct socket *sock;
int error;
int type;
char buf[RPC_MAX_ADDRBUFLEN];
dprintk("svc: svc_create_socket(%s, %d, %u.%u.%u.%u:%d)\n",
serv->sv_program->pg_name, protocol,
NIPQUAD(sin->sin_addr.s_addr),
ntohs(sin->sin_port));
dprintk("svc: svc_create_socket(%s, %d, %s)\n",
serv->sv_program->pg_name, protocol,
__svc_print_addr((struct sockaddr *) sin, buf,
sizeof(buf)));
if (protocol != IPPROTO_UDP && protocol != IPPROTO_TCP) {
printk(KERN_WARNING "svc: only UDP and TCP "