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iputils/iputils-20020927-arping-infiniband.patch

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diff -up iputils-s20071127/arping.c.infiniband iputils-s20071127/arping.c
--- iputils-s20071127/arping.c.infiniband 2007-11-27 01:57:27.000000000 +0100
+++ iputils-s20071127/arping.c 2008-08-08 10:05:04.000000000 +0200
@@ -50,14 +50,26 @@ int unicasting;
int s;
int broadcast_only;
-struct sockaddr_ll me;
-struct sockaddr_ll he;
+/*
+ * Make these two structs have padding at the end so the overly long Infiniband
+ * hardware addresses can have the remainder of their address tacked onto
+ * the end of the struct without overlapping anything.
+ */
+struct sockaddr_ll me[2];
+struct sockaddr_ll he[2];
struct timeval start, last;
int sent, brd_sent;
int received, brd_recv, req_recv;
+#define SYSFS_MNT_PATH "/sys"
+#define SYSFS_CLASS "class"
+#define SYSFS_NET "net"
+#define SYSFS_BROADCAST "broadcast"
+#define SYSFS_PATH_ENV "SYSFS_PATH"
+#define SYSFS_PATH_LEN 256
+
#define MS_TDIFF(tv1,tv2) ( ((tv1).tv_sec-(tv2).tv_sec)*1000 + \
((tv1).tv_usec-(tv2).tv_usec)/1000 )
@@ -124,7 +136,8 @@ int send_pack(int s, struct in_addr src,
p+=4;
gettimeofday(&now, NULL);
- err = sendto(s, buf, p-buf, 0, (struct sockaddr*)HE, sizeof(*HE));
+ err = sendto(s, buf, p-buf, 0, (struct sockaddr*)HE, (ah->ar_hln > 8) ?
+ sizeof(*HE) + ah->ar_hln - 8 : sizeof(*HE));
if (err == p-buf) {
last = now;
sent++;
@@ -172,7 +185,7 @@ void catcher(void)
finish();
if (last.tv_sec==0 || MS_TDIFF(tv,last) > 500) {
- send_pack(s, src, dst, &me, &he);
+ send_pack(s, src, dst, &me[0], &he[0]);
if (count == 0 && unsolicited)
finish();
}
@@ -219,7 +232,7 @@ int recv_pack(unsigned char *buf, int le
return 0;
if (ah->ar_pln != 4)
return 0;
- if (ah->ar_hln != me.sll_halen)
+ if (ah->ar_hln != me[0].sll_halen)
return 0;
if (len < sizeof(*ah) + 2*(4 + ah->ar_hln))
return 0;
@@ -230,7 +243,7 @@ int recv_pack(unsigned char *buf, int le
return 0;
if (src.s_addr != dst_ip.s_addr)
return 0;
- if (memcmp(p+ah->ar_hln+4, &me.sll_addr, ah->ar_hln))
+ if (memcmp(p+ah->ar_hln+4, &me[0].sll_addr, ah->ar_hln))
return 0;
} else {
/* DAD packet was:
@@ -248,7 +261,7 @@ int recv_pack(unsigned char *buf, int le
*/
if (src_ip.s_addr != dst.s_addr)
return 0;
- if (memcmp(p, &me.sll_addr, me.sll_halen) == 0)
+ if (memcmp(p, &me[0].sll_addr, me[0].sll_halen) == 0)
return 0;
if (src.s_addr && src.s_addr != dst_ip.s_addr)
return 0;
@@ -264,7 +277,7 @@ int recv_pack(unsigned char *buf, int le
printf("for %s ", inet_ntoa(dst_ip));
s_printed = 1;
}
- if (memcmp(p+ah->ar_hln+4, me.sll_addr, ah->ar_hln)) {
+ if (memcmp(p+ah->ar_hln+4, me[0].sll_addr, ah->ar_hln)) {
if (!s_printed)
printf("for ");
printf("[");
@@ -290,12 +303,69 @@ int recv_pack(unsigned char *buf, int le
if (quit_on_reply)
finish();
if(!broadcast_only) {
- memcpy(he.sll_addr, p, me.sll_halen);
+ memcpy(he[0].sll_addr, p, me[0].sll_halen);
unicasting=1;
}
return 1;
}
+int get_sysfs_mnt_path(char *mnt_path, size_t len)
+{
+ const char *sysfs_path_env;
+ int pth_len=0;
+
+ if (len == 0 || mnt_path == NULL)
+ return -1;
+
+ /* possible overrride of real mount path */
+ sysfs_path_env = getenv(SYSFS_PATH_ENV);
+ memset(mnt_path, 0, len);
+ strncpy(mnt_path,
+ sysfs_path_env != NULL ? sysfs_path_env : SYSFS_MNT_PATH,
+ len-1);
+
+ if ((pth_len = strlen(mnt_path)) > 0 && mnt_path[pth_len-1] == '/')
+ mnt_path[pth_len-1] = '\0';
+
+ return 0;
+}
+
+int make_sysfs_broadcast_path(char *broadcast_path, size_t len)
+{
+ char mnt_path[SYSFS_PATH_LEN];
+
+ if (get_sysfs_mnt_path(mnt_path, len) != 0)
+ return -1;
+
+ snprintf(broadcast_path, len,
+ "%s/" SYSFS_CLASS "/" SYSFS_NET "/%s/" SYSFS_BROADCAST,
+ mnt_path, device);
+
+ return 0;
+}
+
+char * read_sysfs_broadcast(char *brdcast_path)
+{
+ int fd;
+ int len_to_read;
+ char *brdcast = NULL;
+
+ if ((fd = open(brdcast_path, O_RDONLY)) > -1) {
+ len_to_read = lseek(fd, 0L, SEEK_END);
+ if ((brdcast = malloc(len_to_read+1)) != NULL) {
+ lseek(fd, 0L, SEEK_SET);
+ memset(brdcast, 0, len_to_read+1);
+ if (read(fd, brdcast, len_to_read) == -1) {
+ free(brdcast);
+ brdcast = NULL;
+ }
+ }
+ close(fd);
+ }
+
+ return brdcast;
+}
+
int
main(int argc, char **argv)
{
@@ -459,9 +529,9 @@ main(int argc, char **argv)
close(probe_fd);
};
- me.sll_family = AF_PACKET;
- me.sll_ifindex = ifindex;
- me.sll_protocol = htons(ETH_P_ARP);
+ me[0].sll_family = AF_PACKET;
+ me[0].sll_ifindex = ifindex;
+ me[0].sll_protocol = htons(ETH_P_ARP);
if (bind(s, (struct sockaddr*)&me, sizeof(me)) == -1) {
perror("bind");
exit(2);
@@ -474,14 +544,33 @@ main(int argc, char **argv)
exit(2);
}
}
- if (me.sll_halen == 0) {
+ if (me[0].sll_halen == 0) {
if (!quiet)
printf("Interface \"%s\" is not ARPable (no ll address)\n", device);
exit(dad?0:2);
}
+ he[0] = me[0];
+ he[1] = me[1];
+ {
+ char brdcast_path[SYSFS_PATH_LEN];
+ char *brdcast_val;
+ char *next_ch;
+
+ if (make_sysfs_broadcast_path(brdcast_path, sizeof brdcast_path) != 0) {
+ perror("sysfs attribute broadcast");
+ exit(2);
+ }
+
+ if ((brdcast_val = read_sysfs_broadcast(brdcast_path)) == NULL) {
+ perror("sysfs read broadcast value");
+ exit(2);
+ }
+ for (ch=0; ch<he[0].sll_halen; ch++) {
+ he[0].sll_addr[ch] = strtol(brdcast_val + (ch*3), &next_ch, 16);
+ }
- he = me;
- memset(he.sll_addr, -1, he.sll_halen);
+ free(brdcast_val);
+ }
if (!quiet) {
printf("ARPING %s ", inet_ntoa(dst));
@@ -501,12 +590,12 @@ main(int argc, char **argv)
while(1) {
sigset_t sset, osset;
unsigned char packet[4096];
- struct sockaddr_ll from;
+ struct sockaddr_ll from[2];
socklen_t alen = sizeof(from);
int cc;
if ((cc = recvfrom(s, packet, sizeof(packet), 0,
- (struct sockaddr *)&from, &alen)) < 0) {
+ (struct sockaddr *)&from[0], &alen)) < 0) {
perror("arping: recvfrom");
continue;
}
@@ -514,7 +603,7 @@ main(int argc, char **argv)
sigaddset(&sset, SIGALRM);
sigaddset(&sset, SIGINT);
sigprocmask(SIG_BLOCK, &sset, &osset);
- recv_pack(packet, cc, &from);
+ recv_pack(packet, cc, &from[0]);
sigprocmask(SIG_SETMASK, &osset, NULL);
}
}
diff -up iputils-s20071127/Makefile.infiniband iputils-s20071127/Makefile
--- iputils-s20071127/Makefile.infiniband 2008-08-08 09:17:35.000000000 +0200
+++ iputils-s20071127/Makefile 2008-08-08 10:02:10.000000000 +0200
@@ -37,6 +37,8 @@ rdisc_srv: rdisc_srv.o
rdisc_srv.o: rdisc.c
$(CC) $(CFLAGS) -DRDISC_SERVER -o rdisc_srv.o rdisc.c
+arping: arping.o
+ $(CC) $(LDFLAGS) arping.o $(LOADLIBES) $(LDLIBS) -o arping
check-kernel:
ifeq ($(KERNEL_INCLUDE),)
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