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libnetlink: code shrink

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function                                             old     new   delta
xrtnl_open                                            95      93      -2
parse_rtattr                                          87      85      -2
rtnl_close                                             9       -      -9
xrtnl_wilddump_request                               101      64     -37
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/3 up/down: 0/-50)             Total: -50 bytes

Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Natanael Copa 2010-07-23 01:31:24 +02:00 committed by Denys Vlasenko
parent 4f0279bd93
commit b78ac5a20e
2 changed files with 17 additions and 27 deletions
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38
networking/libiproute/libnetlink.c
View File

@ -1,14 +1,13 @@
/* vi: set sw=4 ts=4: */ /* vi: set sw=4 ts=4: */
/* /*
* libnetlink.c RTnetlink service routines. * RTnetlink service routines.
* *
* This program is free software; you can redistribute it and/or * This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License * modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version * as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version. * 2 of the License, or (at your option) any later version.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
* *
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*/ */
#include <sys/socket.h> #include <sys/socket.h>
@ -17,12 +16,7 @@
#include "libbb.h" #include "libbb.h"
#include "libnetlink.h" #include "libnetlink.h"
void FAST_FUNC rtnl_close(struct rtnl_handle *rth) void FAST_FUNC xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
{
close(rth->fd);
}
int FAST_FUNC xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
{ {
socklen_t addr_len; socklen_t addr_len;
@ -44,7 +38,6 @@ int FAST_FUNC xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
bb_error_msg_and_die("wrong address family %d", rth->local.nl_family); bb_error_msg_and_die("wrong address family %d", rth->local.nl_family);
*/ */
rth->seq = time(NULL); rth->seq = time(NULL);
return 0;
} }
int FAST_FUNC xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int type) int FAST_FUNC xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
@ -53,10 +46,6 @@ int FAST_FUNC xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int ty
struct nlmsghdr nlh; struct nlmsghdr nlh;
struct rtgenmsg g; struct rtgenmsg g;
} req; } req;
struct sockaddr_nl nladdr;
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
req.nlh.nlmsg_len = sizeof(req); req.nlh.nlmsg_len = sizeof(req);
req.nlh.nlmsg_type = type; req.nlh.nlmsg_type = type;
@ -65,8 +54,7 @@ int FAST_FUNC xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int ty
req.nlh.nlmsg_seq = rth->dump = ++rth->seq; req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
req.g.rtgen_family = family; req.g.rtgen_family = family;
return xsendto(rth->fd, (void*)&req, sizeof(req), return rtnl_send(rth, (void*)&req, sizeof(req));
(struct sockaddr*)&nladdr, sizeof(nladdr));
} }
int FAST_FUNC rtnl_send(struct rtnl_handle *rth, char *buf, int len) int FAST_FUNC rtnl_send(struct rtnl_handle *rth, char *buf, int len)
@ -339,8 +327,10 @@ int FAST_FUNC addattr32(struct nlmsghdr *n, int maxlen, int type, uint32_t data)
{ {
int len = RTA_LENGTH(4); int len = RTA_LENGTH(4);
struct rtattr *rta; struct rtattr *rta;
if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen)
if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) {
return -1; return -1;
}
rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len)); rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len));
rta->rta_type = type; rta->rta_type = type;
rta->rta_len = len; rta->rta_len = len;
@ -354,8 +344,9 @@ int FAST_FUNC addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data, in
int len = RTA_LENGTH(alen); int len = RTA_LENGTH(alen);
struct rtattr *rta; struct rtattr *rta;
if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) {
return -1; return -1;
}
rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len)); rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len));
rta->rta_type = type; rta->rta_type = type;
rta->rta_len = len; rta->rta_len = len;
@ -397,7 +388,7 @@ int FAST_FUNC rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data
} }
int FAST_FUNC parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len) void FAST_FUNC parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
{ {
while (RTA_OK(rta, len)) { while (RTA_OK(rta, len)) {
if (rta->rta_type <= max) { if (rta->rta_type <= max) {
@ -408,5 +399,4 @@ int FAST_FUNC parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int
if (len) { if (len) {
bb_error_msg("deficit %d, rta_len=%d!", len, rta->rta_len); bb_error_msg("deficit %d, rta_len=%d!", len, rta->rta_len);
} }
return 0;
} }

6
networking/libiproute/libnetlink.h
View File

@ -18,8 +18,8 @@ struct rtnl_handle {
uint32_t dump; uint32_t dump;
}; };
extern int xrtnl_open(struct rtnl_handle *rth) FAST_FUNC; extern void xrtnl_open(struct rtnl_handle *rth) FAST_FUNC;
extern void rtnl_close(struct rtnl_handle *rth) FAST_FUNC; #define rtnl_close(rth) (close((rth)->fd))
extern int xrtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) FAST_FUNC; extern int xrtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) FAST_FUNC;
extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len) FAST_FUNC; extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len) FAST_FUNC;
extern int xrtnl_dump_filter(struct rtnl_handle *rth, extern int xrtnl_dump_filter(struct rtnl_handle *rth,
@ -42,7 +42,7 @@ extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data, int a
extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, uint32_t data) FAST_FUNC; extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, uint32_t data) FAST_FUNC;
extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen) FAST_FUNC; extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen) FAST_FUNC;
extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len) FAST_FUNC; extern void parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len) FAST_FUNC;
POP_SAVED_FUNCTION_VISIBILITY POP_SAVED_FUNCTION_VISIBILITY