/*
* Given two arrays of addresses, masks and mtus find the common ones
* and return them in the first buffer. Return number of common
* entries.
*/
static int
filterAddrs(afs_uint32 addr1[], afs_uint32 addr2[], afs_uint32 mask1[],
afs_uint32 mask2[], afs_uint32 mtu1[], afs_uint32 mtu2[], int n1,
int n2)
{
afs_uint32 taddr[MAXIPADDRS];
afs_uint32 tmask[MAXIPADDRS];
afs_uint32 tmtu[MAXIPADDRS];
int count = 0, i = 0, j = 0, found = 0;
opr_Assert(addr1);
opr_Assert(addr2);
opr_Assert(mask1);
opr_Assert(mask2);
opr_Assert(mtu1);
opr_Assert(mtu2);
for (i = 0; i < n1; i++) {
found = 0;
for (j = 0; j < n2; j++) {
if (addr1[i] == addr2[j]) {
found = 1;
break;
}
}
/* Always mask loopback address */
if (found && rx_IsLoopbackAddr(addr1[i]))
found = 0;
if (found) {
taddr[count] = addr1[i];
tmask[count] = mask1[i];
tmtu[count] = mtu1[i];
count++;
}
}
/* copy everything into addr1, mask1 and mtu1 */
for (i = 0; i < count; i++) {
addr1[i] = taddr[i];
if (mask1) {
mask1[i] = tmask[i];
mtu1[i] = tmtu[i];
}
}
/* and zero out the rest */
for (i = count; i < n1; i++) {
addr1[i] = 0;
if (mask1) {
mask1[i] = 0;
mtu1[i] = 0;
}
}
return count;
}
int
rxi_GetIFInfo()
{
int i = 0;
int different = 0;
#ifndef AFS_SUN510_ENV
ill_t *ill;
ipif_t *ipif;
#endif
int rxmtu, maxmtu;
int mtus[ADDRSPERSITE];
afs_uint32 addrs[ADDRSPERSITE];
afs_uint32 ifinaddr;
memset(mtus, 0, sizeof(mtus));
memset(addrs, 0, sizeof(addrs));
#ifdef AFS_SUN510_ENV
(void) rw_enter(&afsifinfo_lock, RW_READER);
for (i = 0; (afsifinfo[i].ipaddr != NULL) && (i < ADDRSPERSITE); i++) {
/* Ignore addresses which are down.. */
if (!(afsifinfo[i].flags & IFF_UP))
continue;
/* Compute the Rx interface MTU */
rxmtu = (afsifinfo[i].mtu - RX_IPUDP_SIZE);
ifinaddr = afsifinfo[i].ipaddr;
if (myNetAddrs[i] != ifinaddr)
different++;
/* Copy interface MTU and address; adjust maxmtu */
mtus[i] = rxmtu;
rxmtu = rxi_AdjustIfMTU(rxmtu);
maxmtu = rxmtu * rxi_nRecvFrags +
((rxi_nRecvFrags - 1) * UDP_HDR_SIZE);
maxmtu = rxi_AdjustMaxMTU(rxmtu, maxmtu);
addrs[i] = ifinaddr;
if (!rx_IsLoopbackAddr(ifinaddr) && maxmtu > rx_maxReceiveSize) {
rx_maxReceiveSize = MIN(RX_MAX_PACKET_SIZE, maxmtu);
rx_maxReceiveSize =
MIN(rx_maxReceiveSize, rx_maxReceiveSizeUser);
}
}
(void) rw_exit(&afsifinfo_lock);
rx_maxJumboRecvSize =
RX_HEADER_SIZE + rxi_nDgramPackets * RX_JUMBOBUFFERSIZE +
(rxi_nDgramPackets - 1) * RX_JUMBOHEADERSIZE;
rx_maxJumboRecvSize = MAX(rx_maxJumboRecvSize, rx_maxReceiveSize);
if (different) {
int j;
for (j = 0; j < i; j++) {
myNetMTUs[j] = mtus[j];
myNetAddrs[j] = addrs[j];
}
}
return different;
}
