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authorImre Kaloz <kaloz@openwrt.org>2008-08-20 14:00:34 +0000
committerImre Kaloz <kaloz@openwrt.org>2008-08-20 14:00:34 +0000
commit1e82faaa5e835b00676421b1c63bef541f8ca0d3 (patch)
treeabda8ea9d70f7d10c897cf214028b9037b17f784 /package/busybox/patches/241-udhcpc-oversized_packets.patch
parente3d9bc5779a012df82e2c48af3bef81bb011257a (diff)
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upgrade busybox to v1.11.1 and add current upstream fixes
SVN-Revision: 12348
Diffstat (limited to 'package/busybox/patches/241-udhcpc-oversized_packets.patch')
-rw-r--r--package/busybox/patches/241-udhcpc-oversized_packets.patch94
1 files changed, 40 insertions, 54 deletions
diff --git a/package/busybox/patches/241-udhcpc-oversized_packets.patch b/package/busybox/patches/241-udhcpc-oversized_packets.patch
index 9379491..6d5ec36 100644
--- a/package/busybox/patches/241-udhcpc-oversized_packets.patch
+++ b/package/busybox/patches/241-udhcpc-oversized_packets.patch
@@ -1,89 +1,75 @@
-Index: busybox-1.7.2/networking/udhcp/packet.c
-===================================================================
---- busybox-1.7.2.orig/networking/udhcp/packet.c 2007-10-30 15:35:00.000000000 -0500
-+++ busybox-1.7.2/networking/udhcp/packet.c 2007-10-30 15:35:01.000000000 -0500
-@@ -121,6 +121,10 @@
+--- a/networking/udhcp/packet.c
++++ b/networking/udhcp/packet.c
+@@ -114,6 +114,10 @@
return ~sum;
}
+int udhcp_get_payload_len(struct dhcpMessage *payload)
+{
-+ return sizeof(struct dhcpMessage) - MAX_OPTIONS_LEN + end_option(payload->options) + sizeof(payload->options[0]);
++ return sizeof(struct dhcpMessage) - DHCP_OPTIONS_BUFSIZE + end_option(payload->options) + sizeof(payload->options[0]);
+}
- /* Construct a ip/udp header for a packet, and specify the source and dest hardware address */
- void BUG_sizeof_struct_udp_dhcp_packet_must_be_576(void);
-@@ -132,6 +136,7 @@
- int result;
- struct sockaddr_ll dest;
- struct udp_dhcp_packet packet;
+ /* Construct a ip/udp header for a packet, send packet */
+ int udhcp_send_raw_packet(struct dhcpMessage *payload,
+@@ -125,11 +129,7 @@
+ int fd;
+ int result = -1;
+ const char *msg;
+-
+- enum {
+- IP_UPD_DHCP_SIZE = sizeof(struct udp_dhcp_packet) - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
+- UPD_DHCP_SIZE = IP_UPD_DHCP_SIZE - offsetof(struct udp_dhcp_packet, udp),
+- };
+ int p_len = udhcp_get_payload_len(payload);
fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP));
if (fd < 0) {
-@@ -141,6 +146,7 @@
+@@ -139,7 +139,7 @@
memset(&dest, 0, sizeof(dest));
memset(&packet, 0, sizeof(packet));
+- packet.data = *payload; /* struct copy */
+ memcpy(&(packet.data), payload, p_len);
dest.sll_family = AF_PACKET;
dest.sll_protocol = htons(ETH_P_IP);
-@@ -158,12 +164,13 @@
+@@ -156,23 +156,18 @@
packet.ip.daddr = dest_ip;
packet.udp.source = htons(source_port);
packet.udp.dest = htons(dest_port);
-- packet.udp.len = htons(sizeof(packet.udp) + sizeof(struct dhcpMessage)); /* cheat on the psuedo-header */
+- /* size, excluding IP header: */
+- packet.udp.len = htons(UPD_DHCP_SIZE);
+- /* for UDP checksumming, ip.len is set to UDP packet len */
+ p_len += sizeof(packet.udp);
+ packet.udp.len = htons(p_len);
packet.ip.tot_len = packet.udp.len;
-- memcpy(&(packet.data), payload, sizeof(struct dhcpMessage));
-- packet.udp.check = udhcp_checksum(&packet, sizeof(struct udp_dhcp_packet));
+- packet.udp.check = udhcp_checksum(&packet, IP_UPD_DHCP_SIZE);
+- /* but for sending, it is set to IP packet len */
+- packet.ip.tot_len = htons(IP_UPD_DHCP_SIZE);
+ p_len += sizeof(packet.ip);
+ packet.udp.check = udhcp_checksum(&packet, p_len);
-
-- packet.ip.tot_len = htons(sizeof(struct udp_dhcp_packet));
+ packet.ip.tot_len = htons(p_len);
packet.ip.ihl = sizeof(packet.ip) >> 2;
packet.ip.version = IPVERSION;
packet.ip.ttl = IPDEFTTL;
-@@ -172,7 +179,7 @@
- if (sizeof(struct udp_dhcp_packet) != 576)
- BUG_sizeof_struct_udp_dhcp_packet_must_be_576();
+ packet.ip.check = udhcp_checksum(&packet.ip, sizeof(packet.ip));
-- result = sendto(fd, &packet, sizeof(struct udp_dhcp_packet), 0,
+- /* Currently we send full-sized DHCP packets (zero padded).
+- * If you need to change this: last byte of the packet is
+- * packet.data.options[end_option(packet.data.options)]
+- */
+- result = sendto(fd, &packet, IP_UPD_DHCP_SIZE, 0,
+ result = sendto(fd, &packet, p_len, 0,
- (struct sockaddr *) &dest, sizeof(dest));
- if (result <= 0) {
- bb_perror_msg("sendto");
-@@ -216,7 +223,7 @@
- return -1;
+ (struct sockaddr *) &dest, sizeof(dest));
+ msg = "sendto";
+ ret_close:
+@@ -224,8 +219,7 @@
+ goto ret_close;
}
-- result = write(fd, payload, sizeof(struct dhcpMessage));
-+ result = write(fd, payload, udhcp_get_payload_len(payload));
+- /* Currently we send full-sized DHCP packets (see above) */
+- result = safe_write(fd, payload, DHCP_SIZE);
++ result = safe_write(fd, payload, udhcp_get_payload_len(payload));
+ msg = "write";
+ ret_close:
close(fd);
- return result;
- }
-Index: busybox-1.7.2/networking/udhcp/common.h
-===================================================================
---- busybox-1.7.2.orig/networking/udhcp/common.h 2007-10-30 15:35:00.000000000 -0500
-+++ busybox-1.7.2/networking/udhcp/common.h 2007-10-30 15:35:01.000000000 -0500
-@@ -21,6 +21,8 @@
- #include <netinet/udp.h>
- #include <netinet/ip.h>
-
-+#define MAX_OPTIONS_LEN 308
-+
- struct dhcpMessage {
- uint8_t op;
- uint8_t htype;
-@@ -37,7 +39,7 @@
- uint8_t sname[64];
- uint8_t file[128];
- uint32_t cookie;
-- uint8_t options[308]; /* 312 - cookie */
-+ uint8_t options[MAX_OPTIONS_LEN]; /* 312 - cookie */
- };
-
- struct udp_dhcp_packet {