diff options
Diffstat (limited to 'package/busybox/patches/241-udhcpc-oversized_packets.patch')
| -rw-r--r-- | package/busybox/patches/241-udhcpc-oversized_packets.patch | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/package/busybox/patches/241-udhcpc-oversized_packets.patch b/package/busybox/patches/241-udhcpc-oversized_packets.patch index ef9e7f4be1..d83bf0b413 100644 --- a/package/busybox/patches/241-udhcpc-oversized_packets.patch +++ b/package/busybox/patches/241-udhcpc-oversized_packets.patch @@ -1,6 +1,8 @@ +diff --git a/networking/udhcp/packet.c b/networking/udhcp/packet.c +index 2b7528c..94e53dc 100644 --- a/networking/udhcp/packet.c +++ b/networking/udhcp/packet.c -@@ -165,6 +165,11 @@ uint16_t FAST_FUNC udhcp_checksum(void * +@@ -165,6 +165,11 @@ uint16_t FAST_FUNC udhcp_checksum(void *addr, int count) return ~sum; } @@ -12,7 +14,7 @@ /* Construct a ip/udp header for a packet, send packet */ int FAST_FUNC udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt, uint32_t source_nip, int source_port, -@@ -173,10 +178,10 @@ int FAST_FUNC udhcp_send_raw_packet(stru +@@ -173,10 +178,10 @@ int FAST_FUNC udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt, { struct sockaddr_ll dest_sll; struct ip_udp_dhcp_packet packet; @@ -24,7 +26,7 @@ fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP)); if (fd < 0) { -@@ -185,8 +190,8 @@ int FAST_FUNC udhcp_send_raw_packet(stru +@@ -185,8 +190,8 @@ int FAST_FUNC udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt, } memset(&dest_sll, 0, sizeof(dest_sll)); @@ -35,7 +37,7 @@ dest_sll.sll_family = AF_PACKET; dest_sll.sll_protocol = htons(ETH_P_IP); -@@ -199,36 +204,24 @@ int FAST_FUNC udhcp_send_raw_packet(stru +@@ -199,36 +204,24 @@ int FAST_FUNC udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt, goto ret_close; } @@ -56,14 +58,14 @@ packet.udp.source = htons(source_port); packet.udp.dest = htons(dest_port); - /* size, excluding IP header: */ -- packet.udp.len = htons(UPD_DHCP_SIZE - padding); +- packet.udp.len = htons(UDP_DHCP_SIZE - padding); - /* 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; -- packet.udp.check = udhcp_checksum(&packet, IP_UPD_DHCP_SIZE - padding); +- packet.udp.check = udhcp_checksum(&packet, IP_UDP_DHCP_SIZE - padding); - /* but for sending, it is set to IP packet len */ -- packet.ip.tot_len = htons(IP_UPD_DHCP_SIZE - padding); +- packet.ip.tot_len = htons(IP_UDP_DHCP_SIZE - padding); + p_len += sizeof(packet.ip); + packet.udp.check = udhcp_checksum(&packet, p_len); + packet.ip.tot_len = htons(p_len); @@ -73,12 +75,12 @@ packet.ip.check = udhcp_checksum(&packet.ip, sizeof(packet.ip)); udhcp_dump_packet(dhcp_pkt); -- result = sendto(fd, &packet, IP_UPD_DHCP_SIZE - padding, /*flags:*/ 0, +- result = sendto(fd, &packet, IP_UDP_DHCP_SIZE - padding, /*flags:*/ 0, + result = sendto(fd, &packet, p_len, /*flags:*/ 0, (struct sockaddr *) &dest_sll, sizeof(dest_sll)); msg = "sendto"; ret_close: -@@ -246,7 +239,6 @@ int FAST_FUNC udhcp_send_kernel_packet(s +@@ -246,7 +239,6 @@ int FAST_FUNC udhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt, uint32_t dest_nip, int dest_port) { struct sockaddr_in client; @@ -86,7 +88,7 @@ int fd; int result = -1; const char *msg; -@@ -277,9 +269,7 @@ int FAST_FUNC udhcp_send_kernel_packet(s +@@ -277,9 +269,7 @@ int FAST_FUNC udhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt, } udhcp_dump_packet(dhcp_pkt); |