udhcp: rename fields in struct dhcpOfferedAddr

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

6 files changed, 32 insertions, 31 deletions

diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index ccdfd36..61e4a1d 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -170,8 +170,8 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
 		if (static_lease_ip) {
 			bb_info_msg("Found static lease: %x", static_lease_ip);
 
-			memcpy(&static_lease.chaddr, &packet.chaddr, 16);
-			static_lease.yiaddr = static_lease_ip;
+			memcpy(&static_lease.lease_mac16, &packet.chaddr, 16);
+			static_lease.lease_nip = static_lease_ip;
 			static_lease.expires = 0;
 
 			lease = &static_lease;
@@ -204,19 +204,19 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
 					DEBUG("server_id = %08x", ntohl(server_id_aligned));
 					if (server_id_aligned == server_config.server
 					 && requested
-					 && requested_aligned == lease->yiaddr
+					 && requested_aligned == lease->lease_nip
 					) {
-						send_ACK(&packet, lease->yiaddr);
+						send_ACK(&packet, lease->lease_nip);
 					}
 				} else if (requested) {
 					/* INIT-REBOOT State */
-					if (lease->yiaddr == requested_aligned)
-						send_ACK(&packet, lease->yiaddr);
+					if (lease->lease_nip == requested_aligned)
+						send_ACK(&packet, lease->lease_nip);
 					else
 						send_NAK(&packet);
-				} else if (lease->yiaddr == packet.ciaddr) {
+				} else if (lease->lease_nip == packet.ciaddr) {
 					/* RENEWING or REBINDING State */
-					send_ACK(&packet, lease->yiaddr);
+					send_ACK(&packet, lease->lease_nip);
 				} else { /* don't know what to do!!!! */
 					send_NAK(&packet);
 				}
@@ -231,10 +231,11 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
 				if (lease) {
 					if (lease_expired(lease)) {
 						/* probably best if we drop this lease */
-						memset(lease->chaddr, 0, 16);
-					/* make some contention for this address */
-					} else
+						memset(lease->lease_mac16, 0, 16);
+					} else {
+						/* make some contention for this address */
 						send_NAK(&packet);
+					}
 				} else {
 					uint32_t r = ntohl(requested_aligned);
 					if (r < server_config.start_ip
@@ -252,7 +253,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
 		case DHCPDECLINE:
 			DEBUG("Received DECLINE");
 			if (lease) {
-				memset(lease->chaddr, 0, 16);
+				memset(lease->lease_mac16, 0, 16);
 				lease->expires = time(NULL) + server_config.decline_time;
 			}
 			break;
diff --git a/networking/udhcp/dhcpd.h b/networking/udhcp/dhcpd.h
index 4b5fcc0..a3ace92 100644
--- a/networking/udhcp/dhcpd.h
+++ b/networking/udhcp/dhcpd.h
@@ -78,9 +78,9 @@ typedef uint32_t leasetime_t;
 typedef int32_t signed_leasetime_t;
 
 struct dhcpOfferedAddr {
-	uint8_t chaddr[16];
-	/* In network order */
-	uint32_t yiaddr;
+	uint8_t lease_mac16[16];
+	/* "nip": IP in network order */
+	uint32_t lease_nip;
 	/* Unix time when lease expires, regardless of value of
 	 * server_config.remaining. Kept in memory in host order.
 	 * When written to file, converted to network order
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index 1558f88..5b98aa5 100644
--- a/networking/udhcp/dumpleases.c
+++ b/networking/udhcp/dumpleases.c
@@ -61,10 +61,10 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
 	while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
 		const char *fmt = ":%02x" + 1;
 		for (i = 0; i < 6; i++) {
-			printf(fmt, lease.chaddr[i]);
+			printf(fmt, lease.lease_mac16[i]);
 			fmt = ":%02x";
 		}
-		addr.s_addr = lease.yiaddr;
+		addr.s_addr = lease.lease_nip;
 		/* actually, 15+1 and 19+1, +1 is a space between columns */
 		/* lease.hostname is char[20] and is always NUL terminated */
 		printf(" %-16s%-20s", inet_ntoa(addr), lease.hostname);
diff --git a/networking/udhcp/files.c b/networking/udhcp/files.c
index af77308..671ea94 100644
--- a/networking/udhcp/files.c
+++ b/networking/udhcp/files.c
@@ -360,7 +360,7 @@ void FAST_FUNC write_leases(void)
 	for (i = 0; i < server_config.max_leases; i++) {
 		leasetime_t tmp_time;
 
-		if (leases[i].yiaddr == 0)
+		if (leases[i].lease_nip == 0)
 			continue;
 
 		/* Screw with the time in the struct, for easier writing */
@@ -413,14 +413,14 @@ void FAST_FUNC read_leases(const char *file)
 	IF_UDHCP_DEBUG(i = 0;)
 	while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
 		/* ADDME: what if it matches some static lease? */
-		uint32_t y = ntohl(lease.yiaddr);
+		uint32_t y = ntohl(lease.lease_nip);
 		if (y >= server_config.start_ip && y <= server_config.end_ip) {
 			signed_leasetime_t expires = ntohl(lease.expires) - (signed_leasetime_t)time_passed;
 			if (expires <= 0)
 				continue;
 			/* NB: add_lease takes "relative time", IOW,
 			 * lease duration, not lease deadline. */
-			if (!(add_lease(lease.chaddr, lease.yiaddr, expires, lease.hostname))) {
+			if (!(add_lease(lease.lease_mac16, lease.lease_nip, expires, lease.hostname))) {
 				bb_error_msg("too many leases while loading %s", file);
 				break;
 			}
diff --git a/networking/udhcp/leases.c b/networking/udhcp/leases.c
index b2cdd19..040126f 100644
--- a/networking/udhcp/leases.c
+++ b/networking/udhcp/leases.c
@@ -38,10 +38,10 @@ static void clear_lease(const uint8_t *chaddr, uint32_t yiaddr)
 		continue;
 
 	for (i = 0; i < server_config.max_leases; i++) {
-		if ((j != 16 && memcmp(leases[i].chaddr, chaddr, 16) == 0)
-		 || (yiaddr && leases[i].yiaddr == yiaddr)
+		if ((j != 16 && memcmp(leases[i].lease_mac16, chaddr, 16) == 0)
+		 || (yiaddr && leases[i].lease_nip == yiaddr)
 		) {
-			memset(&(leases[i]), 0, sizeof(leases[i]));
+			memset(&leases[i], 0, sizeof(leases[i]));
 		}
 	}
 }
@@ -75,8 +75,8 @@ struct dhcpOfferedAddr* FAST_FUNC add_lease(
 				hostname++;
 			}
 		}
-		memcpy(oldest->chaddr, chaddr, 16);
-		oldest->yiaddr = yiaddr;
+		memcpy(oldest->lease_mac16, chaddr, 16);
+		oldest->lease_nip = yiaddr;
 		oldest->expires = time(NULL) + leasetime;
 	}
 
@@ -97,7 +97,7 @@ struct dhcpOfferedAddr* FAST_FUNC find_lease_by_chaddr(const uint8_t *chaddr)
 	unsigned i;
 
 	for (i = 0; i < server_config.max_leases; i++)
-		if (!memcmp(leases[i].chaddr, chaddr, 16))
+		if (!memcmp(leases[i].lease_mac16, chaddr, 16))
 			return &(leases[i]);
 
 	return NULL;
@@ -110,8 +110,8 @@ struct dhcpOfferedAddr* FAST_FUNC find_lease_by_yiaddr(uint32_t yiaddr)
 	unsigned i;
 
 	for (i = 0; i < server_config.max_leases; i++)
-		if (leases[i].yiaddr == yiaddr)
-			return &(leases[i]);
+		if (leases[i].lease_nip == yiaddr)
+			return &leases[i];
 
 	return NULL;
 }
@@ -174,9 +174,9 @@ uint32_t FAST_FUNC find_free_or_expired_address(const uint8_t *chaddr)
 	}
 
 	if (oldest_lease && lease_expired(oldest_lease)
-	 && nobody_responds_to_arp(oldest_lease->yiaddr, chaddr)
+	 && nobody_responds_to_arp(oldest_lease->lease_nip, chaddr)
 	) {
-		return oldest_lease->yiaddr;
+		return oldest_lease->lease_nip;
 	}
 
 	return 0;
diff --git a/networking/udhcp/serverpacket.c b/networking/udhcp/serverpacket.c
index 157d157..6aa2d34 100644
--- a/networking/udhcp/serverpacket.c
+++ b/networking/udhcp/serverpacket.c
@@ -132,7 +132,7 @@ int FAST_FUNC send_offer(struct dhcpMessage *oldpacket)
 			signed_leasetime_t tmp = lease->expires - time(NULL);
 			if (tmp >= 0)
 				lease_time_aligned = tmp;
-			packet.yiaddr = lease->yiaddr;
+			packet.yiaddr = lease->lease_nip;
 		}
 		/* Or the client has requested an IP */
 		else if ((req = get_option(oldpacket, DHCP_REQUESTED_IP)) != NULL