--- /dev/null
+diff -up dhcp-4.2.2b1/common/bpf.c.xen dhcp-4.2.2b1/common/bpf.c
+--- dhcp-4.2.2b1/common/bpf.c.xen 2009-11-20 02:48:59.000000000 +0100
++++ dhcp-4.2.2b1/common/bpf.c 2011-07-01 14:00:16.936959001 +0200
+@@ -485,7 +485,7 @@ ssize_t receive_packet (interface, buf,
+ offset = decode_udp_ip_header (interface,
+ interface -> rbuf,
+ interface -> rbuf_offset,
+- from, hdr.bh_caplen, &paylen);
++ from, hdr.bh_caplen, &paylen, 0);
+
+ /* If the IP or UDP checksum was bad, skip the packet... */
+ if (offset < 0) {
+diff -up dhcp-4.2.2b1/common/dlpi.c.xen dhcp-4.2.2b1/common/dlpi.c
+--- dhcp-4.2.2b1/common/dlpi.c.xen 2011-05-11 16:20:59.000000000 +0200
++++ dhcp-4.2.2b1/common/dlpi.c 2011-07-01 14:00:16.937958997 +0200
+@@ -693,7 +693,7 @@ ssize_t receive_packet (interface, buf,
+ length -= offset;
+ #endif
+ offset = decode_udp_ip_header (interface, dbuf, bufix,
+- from, length, &paylen);
++ from, length, &paylen, 0);
+
+ /*
+ * If the IP or UDP checksum was bad, skip the packet...
+diff -up dhcp-4.2.2b1/common/lpf.c.xen dhcp-4.2.2b1/common/lpf.c
+--- dhcp-4.2.2b1/common/lpf.c.xen 2011-05-10 16:38:58.000000000 +0200
++++ dhcp-4.2.2b1/common/lpf.c 2011-07-01 14:11:24.725748028 +0200
+@@ -29,19 +29,33 @@
+ #include "dhcpd.h"
+ #if defined (USE_LPF_SEND) || defined (USE_LPF_RECEIVE)
+ #include <sys/ioctl.h>
++#include <sys/socket.h>
+ #include <sys/uio.h>
+ #include <errno.h>
+
+ #include <asm/types.h>
+ #include <linux/filter.h>
+ #include <linux/if_ether.h>
++#include <linux/if_packet.h>
+ #include <netinet/in_systm.h>
+-#include <net/if_packet.h>
+ #include "includes/netinet/ip.h"
+ #include "includes/netinet/udp.h"
+ #include "includes/netinet/if_ether.h"
+ #include <net/if.h>
+
++#ifndef PACKET_AUXDATA
++#define PACKET_AUXDATA 8
++
++struct tpacket_auxdata
++{
++ __u32 tp_status;
++ __u32 tp_len;
++ __u32 tp_snaplen;
++ __u16 tp_mac;
++ __u16 tp_net;
++};
++#endif
++
+ /* Reinitializes the specified interface after an address change. This
+ is not required for packet-filter APIs. */
+
+@@ -67,10 +81,14 @@ int if_register_lpf (info)
+ struct interface_info *info;
+ {
+ int sock;
+- struct sockaddr sa;
++ union {
++ struct sockaddr_ll ll;
++ struct sockaddr common;
++ } sa;
++ struct ifreq ifr;
+
+ /* Make an LPF socket. */
+- if ((sock = socket(PF_PACKET, SOCK_PACKET,
++ if ((sock = socket(PF_PACKET, SOCK_RAW,
+ htons((short)ETH_P_ALL))) < 0) {
+ if (errno == ENOPROTOOPT || errno == EPROTONOSUPPORT ||
+ errno == ESOCKTNOSUPPORT || errno == EPFNOSUPPORT ||
+@@ -85,11 +103,17 @@ int if_register_lpf (info)
+ log_fatal ("Open a socket for LPF: %m");
+ }
+
++ memset (&ifr, 0, sizeof ifr);
++ strncpy (ifr.ifr_name, (const char *)info -> ifp, sizeof ifr.ifr_name);
++ ifr.ifr_name[IFNAMSIZ-1] = '\0';
++ if (ioctl (sock, SIOCGIFINDEX, &ifr))
++ log_fatal ("Failed to get interface index: %m");
++
+ /* Bind to the interface name */
+ memset (&sa, 0, sizeof sa);
+- sa.sa_family = AF_PACKET;
+- strncpy (sa.sa_data, (const char *)info -> ifp, sizeof sa.sa_data);
+- if (bind (sock, &sa, sizeof sa)) {
++ sa.ll.sll_family = AF_PACKET;
++ sa.ll.sll_ifindex = ifr.ifr_ifindex;
++ if (bind (sock, &sa.common, sizeof sa)) {
+ if (errno == ENOPROTOOPT || errno == EPROTONOSUPPORT ||
+ errno == ESOCKTNOSUPPORT || errno == EPFNOSUPPORT ||
+ errno == EAFNOSUPPORT || errno == EINVAL) {
+@@ -171,9 +195,18 @@ static void lpf_gen_filter_setup (struct
+ void if_register_receive (info)
+ struct interface_info *info;
+ {
++ int val;
++
+ /* Open a LPF device and hang it on this interface... */
+ info -> rfdesc = if_register_lpf (info);
+
++ val = 1;
++ if (setsockopt (info -> rfdesc, SOL_PACKET, PACKET_AUXDATA, &val,
++ sizeof val) < 0) {
++ if (errno != ENOPROTOOPT)
++ log_fatal ("Failed to set auxiliary packet data: %m");
++ }
++
+ #if defined (HAVE_TR_SUPPORT)
+ if (info -> hw_address.hbuf [0] == HTYPE_IEEE802)
+ lpf_tr_filter_setup (info);
+@@ -295,7 +328,6 @@ ssize_t send_packet (interface, packet,
+ double hh [16];
+ double ih [1536 / sizeof (double)];
+ unsigned char *buf = (unsigned char *)ih;
+- struct sockaddr_pkt sa;
+ int result;
+ int fudge;
+
+@@ -316,17 +348,7 @@ ssize_t send_packet (interface, packet,
+ (unsigned char *)raw, len);
+ memcpy (buf + ibufp, raw, len);
+
+- /* For some reason, SOCK_PACKET sockets can't be connected,
+- so we have to do a sentdo every time. */
+- memset (&sa, 0, sizeof sa);
+- sa.spkt_family = AF_PACKET;
+- strncpy ((char *)sa.spkt_device,
+- (const char *)interface -> ifp, sizeof sa.spkt_device);
+- sa.spkt_protocol = htons(ETH_P_IP);
+-
+- result = sendto (interface -> wfdesc,
+- buf + fudge, ibufp + len - fudge, 0,
+- (const struct sockaddr *)&sa, sizeof sa);
++ result = write (interface -> wfdesc, buf + fudge, ibufp + len - fudge);
+ if (result < 0)
+ log_error ("send_packet: %m");
+ return result;
+@@ -343,14 +365,35 @@ ssize_t receive_packet (interface, buf,
+ {
+ int length = 0;
+ int offset = 0;
++ int nocsum = 0;
+ unsigned char ibuf [1536];
+ unsigned bufix = 0;
+ unsigned paylen;
++ unsigned char cmsgbuf[CMSG_LEN(sizeof(struct tpacket_auxdata))];
++ struct iovec iov = {
++ .iov_base = ibuf,
++ .iov_len = sizeof ibuf,
++ };
++ struct msghdr msg = {
++ .msg_iov = &iov,
++ .msg_iovlen = 1,
++ .msg_control = cmsgbuf,
++ .msg_controllen = sizeof(cmsgbuf),
++ };
++ struct cmsghdr *cmsg;
+
+- length = read (interface -> rfdesc, ibuf, sizeof ibuf);
++ length = recvmsg (interface -> rfdesc, &msg, 0);
+ if (length <= 0)
+ return length;
+
++ 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;
++ }
++ }
++
+ bufix = 0;
+ /* Decode the physical header... */
+ offset = decode_hw_header (interface, ibuf, bufix, hfrom);
+@@ -367,7 +410,7 @@ ssize_t receive_packet (interface, buf,
+
+ /* Decode the IP and UDP headers... */
+ offset = decode_udp_ip_header (interface, ibuf, bufix, from,
+- (unsigned)length, &paylen);
++ (unsigned)length, &paylen, nocsum);
+
+ /* If the IP or UDP checksum was bad, skip the packet... */
+ if (offset < 0)
+diff -up dhcp-4.2.2b1/common/nit.c.xen dhcp-4.2.2b1/common/nit.c
+--- dhcp-4.2.2b1/common/nit.c.xen 2009-11-20 02:49:01.000000000 +0100
++++ dhcp-4.2.2b1/common/nit.c 2011-07-01 14:00:16.939958989 +0200
+@@ -369,7 +369,7 @@ ssize_t receive_packet (interface, buf,
+
+ /* Decode the IP and UDP headers... */
+ offset = decode_udp_ip_header (interface, ibuf, bufix,
+- from, length, &paylen);
++ from, length, &paylen, 0);
+
+ /* If the IP or UDP checksum was bad, skip the packet... */
+ if (offset < 0)
+diff -up dhcp-4.2.2b1/common/packet.c.xen dhcp-4.2.2b1/common/packet.c
+--- dhcp-4.2.2b1/common/packet.c.xen 2009-07-23 20:52:20.000000000 +0200
++++ dhcp-4.2.2b1/common/packet.c 2011-07-01 14:00:16.939958989 +0200
+@@ -211,7 +211,7 @@ ssize_t
+ decode_udp_ip_header(struct interface_info *interface,
+ unsigned char *buf, unsigned bufix,
+ struct sockaddr_in *from, unsigned buflen,
+- unsigned *rbuflen)
++ unsigned *rbuflen, int nocsum)
+ {
+ unsigned char *data;
+ struct ip ip;
+@@ -322,7 +322,7 @@ decode_udp_ip_header(struct interface_in
+ 8, IPPROTO_UDP + ulen))));
+
+ udp_packets_seen++;
+- if (usum && usum != sum) {
++ if (!nocsum && usum && usum != sum) {
+ udp_packets_bad_checksum++;
+ if (udp_packets_seen > 4 &&
+ (udp_packets_seen / udp_packets_bad_checksum) < 2) {
+diff -up dhcp-4.2.2b1/common/upf.c.xen dhcp-4.2.2b1/common/upf.c
+--- dhcp-4.2.2b1/common/upf.c.xen 2009-11-20 02:49:01.000000000 +0100
++++ dhcp-4.2.2b1/common/upf.c 2011-07-01 14:00:16.940958986 +0200
+@@ -320,7 +320,7 @@ ssize_t receive_packet (interface, buf,
+
+ /* Decode the IP and UDP headers... */
+ offset = decode_udp_ip_header (interface, ibuf, bufix,
+- from, length, &paylen);
++ from, length, &paylen, 0);
+
+ /* If the IP or UDP checksum was bad, skip the packet... */
+ if (offset < 0)
+diff -up dhcp-4.2.2b1/includes/dhcpd.h.xen dhcp-4.2.2b1/includes/dhcpd.h
+--- dhcp-4.2.2b1/includes/dhcpd.h.xen 2011-07-01 14:00:16.000000000 +0200
++++ dhcp-4.2.2b1/includes/dhcpd.h 2011-07-01 14:12:18.069642470 +0200
+@@ -2796,7 +2796,7 @@ ssize_t decode_hw_header (struct interfa
+ unsigned, struct hardware *);
+ ssize_t decode_udp_ip_header (struct interface_info *, unsigned char *,
+ unsigned, struct sockaddr_in *,
+- unsigned, unsigned *);
++ unsigned, unsigned *, int);
+
+ /* ethernet.c */
+ void assemble_ethernet_header (struct interface_info *, unsigned char *,
projects / people / teissler / ipfire-2.x.git / blobdiff