+/* vi: set sw=4 ts=4: */
/*
- * ll_proto.c
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either 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 <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <string.h>
-
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/sockios.h>
-
+#include "libbb.h"
+#include "rt_names.h"
#include "utils.h"
+#include <netinet/if_ether.h>
-#define __PF(f,n) { ETH_P_##f, #n },
-static struct {
- int id;
- char *name;
-} llproto_names[] = {
+/* Please conditionalize exotic protocols on CONFIG_something */
+
+static const uint16_t llproto_ids[] = {
+#define __PF(f,n) ETH_P_##f,
__PF(LOOP,loop)
-__PF(PUP,pup)
+__PF(PUP,pup)
#ifdef ETH_P_PUPAT
-__PF(PUPAT,pupat)
+__PF(PUPAT,pupat)
#endif
__PF(IP,ip)
__PF(X25,x25)
__PF(ARP,arp)
__PF(BPQ,bpq)
#ifdef ETH_P_IEEEPUP
-__PF(IEEEPUP,ieeepup)
+__PF(IEEEPUP,ieeepup)
#endif
#ifdef ETH_P_IEEEPUPAT
-__PF(IEEEPUPAT,ieeepupat)
-#endif
-__PF(DEC,dec)
-__PF(DNA_DL,dna_dl)
-__PF(DNA_RC,dna_rc)
-__PF(DNA_RT,dna_rt)
-__PF(LAT,lat)
-__PF(DIAG,diag)
-__PF(CUST,cust)
-__PF(SCA,sca)
-__PF(RARP,rarp)
-__PF(ATALK,atalk)
-__PF(AARP,aarp)
-__PF(IPX,ipx)
-__PF(IPV6,ipv6)
-__PF(PPP_DISC,ppp_disc)
-__PF(PPP_SES,ppp_ses)
-__PF(ATMMPOA,atmmpoa)
-__PF(ATMFATE,atmfate)
+__PF(IEEEPUPAT,ieeepupat)
+#endif
+__PF(DEC,dec)
+__PF(DNA_DL,dna_dl)
+__PF(DNA_RC,dna_rc)
+__PF(DNA_RT,dna_rt)
+__PF(LAT,lat)
+__PF(DIAG,diag)
+__PF(CUST,cust)
+__PF(SCA,sca)
+__PF(RARP,rarp)
+__PF(ATALK,atalk)
+__PF(AARP,aarp)
+__PF(IPX,ipx)
+__PF(IPV6,ipv6)
+#ifdef ETH_P_PPP_DISC
+__PF(PPP_DISC,ppp_disc)
+#endif
+#ifdef ETH_P_PPP_SES
+__PF(PPP_SES,ppp_ses)
+#endif
+#ifdef ETH_P_ATMMPOA
+__PF(ATMMPOA,atmmpoa)
+#endif
+#ifdef ETH_P_ATMFATE
+__PF(ATMFATE,atmfate)
+#endif
-__PF(802_3,802_3)
-__PF(AX25,ax25)
-__PF(ALL,all)
-__PF(802_2,802_2)
-__PF(SNAP,snap)
-__PF(DDCMP,ddcmp)
-__PF(WAN_PPP,wan_ppp)
-__PF(PPP_MP,ppp_mp)
-__PF(LOCALTALK,localtalk)
-__PF(PPPTALK,ppptalk)
-__PF(TR_802_2,tr_802_2)
-__PF(MOBITEX,mobitex)
-__PF(CONTROL,control)
-__PF(IRDA,irda)
-__PF(ECONET,econet)
+__PF(802_3,802_3)
+__PF(AX25,ax25)
+__PF(ALL,all)
+__PF(802_2,802_2)
+__PF(SNAP,snap)
+__PF(DDCMP,ddcmp)
+__PF(WAN_PPP,wan_ppp)
+__PF(PPP_MP,ppp_mp)
+__PF(LOCALTALK,localtalk)
+__PF(PPPTALK,ppptalk)
+__PF(TR_802_2,tr_802_2)
+__PF(MOBITEX,mobitex)
+__PF(CONTROL,control)
+__PF(IRDA,irda)
+#ifdef ETH_P_ECONET
+__PF(ECONET,econet)
+#endif
-{ 0x8100, "802.1Q" },
-{ ETH_P_IP, "ipv4" },
+0x8100,
+ETH_P_IP
};
#undef __PF
+/* Keep declarations above and below in sync! */
-char * ll_proto_n2a(unsigned short id, char *buf, int len)
-{
- int i;
+static const char llproto_names[] ALIGN1 =
+#define __PF(f,n) #n "\0"
+__PF(LOOP,loop)
+__PF(PUP,pup)
+#ifdef ETH_P_PUPAT
+__PF(PUPAT,pupat)
+#endif
+__PF(IP,ip)
+__PF(X25,x25)
+__PF(ARP,arp)
+__PF(BPQ,bpq)
+#ifdef ETH_P_IEEEPUP
+__PF(IEEEPUP,ieeepup)
+#endif
+#ifdef ETH_P_IEEEPUPAT
+__PF(IEEEPUPAT,ieeepupat)
+#endif
+__PF(DEC,dec)
+__PF(DNA_DL,dna_dl)
+__PF(DNA_RC,dna_rc)
+__PF(DNA_RT,dna_rt)
+__PF(LAT,lat)
+__PF(DIAG,diag)
+__PF(CUST,cust)
+__PF(SCA,sca)
+__PF(RARP,rarp)
+__PF(ATALK,atalk)
+__PF(AARP,aarp)
+__PF(IPX,ipx)
+__PF(IPV6,ipv6)
+#ifdef ETH_P_PPP_DISC
+__PF(PPP_DISC,ppp_disc)
+#endif
+#ifdef ETH_P_PPP_SES
+__PF(PPP_SES,ppp_ses)
+#endif
+#ifdef ETH_P_ATMMPOA
+__PF(ATMMPOA,atmmpoa)
+#endif
+#ifdef ETH_P_ATMFATE
+__PF(ATMFATE,atmfate)
+#endif
+
+__PF(802_3,802_3)
+__PF(AX25,ax25)
+__PF(ALL,all)
+__PF(802_2,802_2)
+__PF(SNAP,snap)
+__PF(DDCMP,ddcmp)
+__PF(WAN_PPP,wan_ppp)
+__PF(PPP_MP,ppp_mp)
+__PF(LOCALTALK,localtalk)
+__PF(PPPTALK,ppptalk)
+__PF(TR_802_2,tr_802_2)
+__PF(MOBITEX,mobitex)
+__PF(CONTROL,control)
+__PF(IRDA,irda)
+#ifdef ETH_P_ECONET
+__PF(ECONET,econet)
+#endif
+
+"802.1Q" "\0"
+"ipv4" "\0"
+;
+#undef __PF
- id = ntohs(id);
- for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
- if (llproto_names[i].id == id)
- return llproto_names[i].name;
+const char* FAST_FUNC ll_proto_n2a(unsigned short id, char *buf, int len)
+{
+ unsigned i;
+ id = ntohs(id);
+ for (i = 0; i < ARRAY_SIZE(llproto_ids); i++) {
+ if (llproto_ids[i] == id)
+ return nth_string(llproto_names, i);
}
- snprintf(buf, len, "[%d]", id);
- return buf;
+ snprintf(buf, len, "[%u]", id);
+ return buf;
}
-int ll_proto_a2n(unsigned short *id, char *buf)
+int FAST_FUNC ll_proto_a2n(unsigned short *id, char *buf)
{
- int i;
- for (i=0; i<sizeof(llproto_names)/sizeof(llproto_names[0]); i++) {
- if (strcasecmp(llproto_names[i].name, buf) == 0) {
- *id = htons(llproto_names[i].id);
- return 0;
- }
+ unsigned i;
+ const char *name = llproto_names;
+ for (i = 0; i < ARRAY_SIZE(llproto_ids); i++) {
+ if (strcasecmp(name, buf) == 0) {
+ i = llproto_ids[i];
+ goto good;
+ }
+ name += strlen(name) + 1;
}
- if (get_u16(id, buf, 0))
+ errno = 0;
+ i = bb_strtou(buf, NULL, 0);
+ if (errno || i > 0xffff)
return -1;
- *id = htons(*id);
+ good:
+ *id = htons(i);
return 0;
}
projects / oweals / busybox.git / blobdiff