1 files changed, 0 insertions, 86 deletions
diff --git a/package/utils/busybox/patches/950-partial-checksum.patch b/package/utils/busybox/patches/950-partial-checksum.patch
deleted file mode 100644
index 6e8a69e9a6..0000000000
--- a/package/utils/busybox/patches/950-partial-checksum.patch
+++ /dev/null
@@ -1,86 +0,0 @@
---- a/networking/udhcp/dhcpc.c
-+++ b/networking/udhcp/dhcpc.c
-@@ -26,8 +26,8 @@
- #include "dhcpc.h"
- 
- #include <netinet/if_ether.h>
--#include <netpacket/packet.h>
- #include <linux/filter.h>
-+#include <linux/if_packet.h>
- 
- /* struct client_config_t client_config is in bb_common_bufsiz1 */
- 
-@@ -846,17 +846,41 @@ static int send_release(uint32_t server,
- static NOINLINE int udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd)
- {
- 	int bytes;
-+	int nocsum = 0;
- 	struct ip_udp_dhcp_packet packet;
- 	uint16_t check;
-+	unsigned char cmsgbuf[CMSG_LEN(sizeof(struct tpacket_auxdata))];
-+	struct iovec iov = {
-+		.iov_base = &packet,
-+		.iov_len = sizeof(packet),
-+	};
-+	struct msghdr msg = {
-+		.msg_iov = &iov,
-+		.msg_iovlen = 1,
-+		.msg_control = cmsgbuf,
-+		.msg_controllen = sizeof(cmsgbuf),
-+	};
-+	struct cmsghdr *cmsg;
- 
- 	memset(&packet, 0, sizeof(packet));
--	bytes = safe_read(fd, &packet, sizeof(packet));
-+	do {
-+		bytes = recvmsg(fd, &msg, 0);
-+	} while (bytes < 0 && errno == EINTR);
-+
- 	if (bytes < 0) {
- 		log1("Packet read error, ignoring");
- 		/* NB: possible down interface, etc. Caller should pause. */
- 		return bytes; /* returns -1 */
- 	}
- 
-+	for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
-+		if (cmsg->cmsg_level == SOL_PACKET &&
-+			cmsg->cmsg_type == PACKET_AUXDATA) {
-+			struct tpacket_auxdata *aux = (void *)CMSG_DATA(cmsg);
-+			nocsum = aux->tp_status & TP_STATUS_CSUMNOTREADY;
-+		}
-+	}
-+
- 	if (bytes < (int) (sizeof(packet.ip) + sizeof(packet.udp))) {
- 		log1("Packet is too short, ignoring");
- 		return -2;
-@@ -896,7 +920,7 @@ static NOINLINE int udhcp_recv_raw_packe
- 	packet.ip.tot_len = packet.udp.len; /* yes, this is needed */
- 	check = packet.udp.check;
- 	packet.udp.check = 0;
--	if (check && check != udhcp_checksum(&packet, bytes)) {
-+	if (!nocsum && check && check != udhcp_checksum(&packet, bytes)) {
- 		log1("Packet with bad UDP checksum received, ignoring");
- 		return -2;
- 	}
-@@ -942,6 +966,7 @@ static int udhcp_raw_socket(int ifindex)
- {
- 	int fd;
- 	struct sockaddr_ll sock;
-+	int val;
- 
- 	/*
- 	 * Comment:
-@@ -1008,6 +1033,13 @@ static int udhcp_raw_socket(int ifindex)
- 			log1("Attached filter to raw socket fd %d", fd); // log?
- 	}
- 
-+	val = 1;
-+	if (setsockopt(fd, SOL_PACKET, PACKET_AUXDATA, &val,
-+			sizeof(val)) < 0) {
-+		if (errno != ENOPROTOOPT)
-+			log1("Failed to set auxiliary packet data for socket fd %d", fd);
-+	}
-+
- 	log1("Created raw socket");
- 
- 	return fd;