mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-01 00:49:42 +02:00
08ea499752
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11742 3c298f89-4303-0410-b956-a3cf2f4a3e73
470 lines
13 KiB
Diff
470 lines
13 KiB
Diff
diff -urN libpcap-0.9.8/gencode.c.rej libpcap-0.9.8.new/gencode.c.rej
|
|
--- libpcap-0.9.8/gencode.c.rej 2007-07-10 21:38:15.000000000 +0200
|
|
+++ libpcap-0.9.8.new/gencode.c.rej 1970-01-01 01:00:00.000000000 +0100
|
|
@@ -1,465 +0,0 @@
|
|
-***************
|
|
-*** 24,29 ****
|
|
- "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.51 2007/06/14 20:54:12 gianluca Exp $ (LBL)";
|
|
- #endif
|
|
-
|
|
- #ifdef HAVE_CONFIG_H
|
|
- #include "config.h"
|
|
- #endif
|
|
---- 24,31 ----
|
|
- "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.221.2.51 2007/06/14 20:54:12 gianluca Exp $ (LBL)";
|
|
- #endif
|
|
-
|
|
-+ #define ENABLE_WLAN_FILTERING_PATCH
|
|
-+
|
|
- #ifdef HAVE_CONFIG_H
|
|
- #include "config.h"
|
|
- #endif
|
|
-***************
|
|
-*** 144,150 ****
|
|
- OR_NET, /* relative to the network-layer header */
|
|
- OR_NET_NOSNAP, /* relative to the network-layer header, with no SNAP header at the link layer */
|
|
- OR_TRAN_IPV4, /* relative to the transport-layer header, with IPv4 network layer */
|
|
-- OR_TRAN_IPV6 /* relative to the transport-layer header, with IPv6 network layer */
|
|
- };
|
|
-
|
|
- /*
|
|
---- 146,153 ----
|
|
- OR_NET, /* relative to the network-layer header */
|
|
- OR_NET_NOSNAP, /* relative to the network-layer header, with no SNAP header at the link layer */
|
|
- OR_TRAN_IPV4, /* relative to the transport-layer header, with IPv4 network layer */
|
|
-+ OR_TRAN_IPV6, /* relative to the transport-layer header, with IPv6 network layer */
|
|
-+ OR_LINK_AFTER_WIRELESS_HDR /* After the 802.11 variable length header */
|
|
- };
|
|
-
|
|
- /*
|
|
-***************
|
|
-*** 199,204 ****
|
|
- static struct block *gen_linktype(int);
|
|
- static struct block *gen_snap(bpf_u_int32, bpf_u_int32, u_int);
|
|
- static struct block *gen_llc_linktype(int);
|
|
- static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int);
|
|
- #ifdef INET6
|
|
- static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);
|
|
---- 202,208 ----
|
|
- static struct block *gen_linktype(int);
|
|
- static struct block *gen_snap(bpf_u_int32, bpf_u_int32, u_int);
|
|
- static struct block *gen_llc_linktype(int);
|
|
-+ static struct block *gen_802_11_llc_linktype(int);
|
|
- static struct block *gen_hostop(bpf_u_int32, bpf_u_int32, int, int, u_int, u_int);
|
|
- #ifdef INET6
|
|
- static struct block *gen_hostop6(struct in6_addr *, struct in6_addr *, int, int, u_int, u_int);
|
|
-***************
|
|
-*** 242,247 ****
|
|
- static struct slist *xfer_to_a(struct arth *);
|
|
- static struct block *gen_mac_multicast(int);
|
|
- static struct block *gen_len(int, int);
|
|
-
|
|
- static struct block *gen_ppi_dlt_check();
|
|
- static struct block *gen_msg_abbrev(int type);
|
|
---- 246,252 ----
|
|
- static struct slist *xfer_to_a(struct arth *);
|
|
- static struct block *gen_mac_multicast(int);
|
|
- static struct block *gen_len(int, int);
|
|
-+ static struct block *gen_check_802_11_data_frame();
|
|
-
|
|
- static struct block *gen_ppi_dlt_check();
|
|
- static struct block *gen_msg_abbrev(int type);
|
|
-***************
|
|
-*** 1345,1350 ****
|
|
- return s;
|
|
- }
|
|
-
|
|
-
|
|
- /*
|
|
- * Load a value relative to the beginning of the specified header.
|
|
---- 1350,1487 ----
|
|
- return s;
|
|
- }
|
|
-
|
|
-+ /*
|
|
-+ * Load a value relative to the beginning of the link-layer header after the 802.11
|
|
-+ * header, i.e. LLC_SNAP.
|
|
-+ * The link-layer header doesn't necessarily begin at the beginning
|
|
-+ * of the packet data; there might be a variable-length prefix containing
|
|
-+ * radio information.
|
|
-+ */
|
|
-+ static struct slist *
|
|
-+ gen_load_ll_after_802_11_rel(offset, size)
|
|
-+ u_int offset, size;
|
|
-+ {
|
|
-+ struct slist *s, *s_load_fc;
|
|
-+ struct slist *sjset_qos;
|
|
-+ struct slist *s_load;
|
|
-+ struct slist *s_ld_a_2;
|
|
-+ struct slist *s_add_a_x;
|
|
-+ struct slist *s_a_to_x;
|
|
-+ struct slist *sjset_data_frame_1;
|
|
-+ struct slist *sjset_data_frame_2;
|
|
-+ struct slist *s_load_x_0;
|
|
-+
|
|
-+ /*
|
|
-+ * This code is not compatible with the optimizer, as
|
|
-+ * we are generating jmp instructions within a normal
|
|
-+ * slist of instructions
|
|
-+ *
|
|
-+ */
|
|
-+ no_optimize = 1;
|
|
-+
|
|
-+ s = gen_llprefixlen();
|
|
-+
|
|
-+ /*
|
|
-+ * If "s" is non-null, it has code to arrange that the X register
|
|
-+ * contains the length of the prefix preceding the link-layer
|
|
-+ * header.
|
|
-+ *
|
|
-+ * Otherwise, the length of the prefix preceding the link-layer
|
|
-+ * header is "off_ll".
|
|
-+ */
|
|
-+ if (s != NULL) {
|
|
-+ /*
|
|
-+ * There's a variable-length prefix preceding the
|
|
-+ * link-layer header. "s" points to a list of statements
|
|
-+ * that put the length of that prefix into the X register.
|
|
-+ * do an indirect load, to use the X register as an offset.
|
|
-+ */
|
|
-+
|
|
-+ /*
|
|
-+ * Load the Frame Control field
|
|
-+ */
|
|
-+ s_load_fc = new_stmt(BPF_LD|BPF_IND|BPF_B);
|
|
-+ s_load_fc->s.k = 0;
|
|
-+ } else {
|
|
-+ /*
|
|
-+ * There is no variable-length header preceding the
|
|
-+ * link-layer header; add in off_ll, which, if there's
|
|
-+ * a fixed-length header preceding the link-layer header,
|
|
-+ * is the length of that header.
|
|
-+ */
|
|
-+
|
|
-+ /*
|
|
-+ * We need to load the Frame control directly, and
|
|
-+ * then load X with a fake 0, i.e. the length of the
|
|
-+ * non-existing prepended header
|
|
-+ */
|
|
-+
|
|
-+ /*
|
|
-+ * TODO GV: I'm not sure if 0 is the right constant in this
|
|
-+ * case. If the link layer has a fixed length prepended header,
|
|
-+ * that should be the value that we put here
|
|
-+ */
|
|
-+
|
|
-+ /* Load 0 into X */
|
|
-+ s_load_x_0 = new_stmt(BPF_LDX|BPF_IMM);
|
|
-+ s_load_x_0->s.k = 0;
|
|
-+
|
|
-+ /*
|
|
-+ * TODO GV: I'm not sure if 0 is the right constant in this
|
|
-+ * case. If the link layer has a fixed length prepended header,
|
|
-+ * that should be the value that we put here
|
|
-+ */
|
|
-+
|
|
-+ /*
|
|
-+ * load the Frame Control with absolute access
|
|
-+ */
|
|
-+ s_load_fc = new_stmt(BPF_LD|BPF_ABS|BPF_B);
|
|
-+ s_load_fc->s.k = 0;
|
|
-+ s = s_load_x_0;
|
|
-+ }
|
|
-+
|
|
-+ /*
|
|
-+ * Generate the common instructions to check if it's a data frame
|
|
-+ * and if so compute the 802.11 header length
|
|
-+ */
|
|
-+ sjset_data_frame_1 = new_stmt(JMP(BPF_JSET)); // b3 should be 1
|
|
-+ sjset_data_frame_1->s.k = 0x8;
|
|
-+
|
|
-+ sjset_data_frame_2 = new_stmt(JMP(BPF_JSET)); // b2 should be 0
|
|
-+ sjset_data_frame_2->s.k = 0x04;
|
|
-+
|
|
-+ sjset_qos = new_stmt(JMP(BPF_JSET));
|
|
-+ sjset_qos->s.k = 0x80; //QOS bit
|
|
-+
|
|
-+ s_ld_a_2 = new_stmt(BPF_LD|BPF_IMM);
|
|
-+ s_ld_a_2->s.k = 2;
|
|
-+
|
|
-+ s_add_a_x = new_stmt(BPF_ALU|BPF_ADD|BPF_X);
|
|
-+ s_a_to_x = new_stmt(BPF_MISC|BPF_TAX);
|
|
-+
|
|
-+ s_load = new_stmt(BPF_LD|BPF_IND|size);
|
|
-+ s_load->s.k = offset;
|
|
-+
|
|
-+ sjset_data_frame_1->s.jt = sjset_data_frame_2;
|
|
-+ sjset_data_frame_1->s.jf = s_load;
|
|
-+
|
|
-+ sjset_data_frame_2->s.jt = s_load;
|
|
-+ sjset_data_frame_2->s.jf = sjset_qos;
|
|
-+
|
|
-+ sjset_qos->s.jt = s_ld_a_2;
|
|
-+ sjset_qos->s.jf = s_load;
|
|
-+
|
|
-+ sappend(s, s_load_fc);
|
|
-+ sappend(s_load_fc, sjset_data_frame_1);
|
|
-+ sappend(sjset_data_frame_1, sjset_data_frame_2);
|
|
-+ sappend(sjset_data_frame_2, sjset_qos);
|
|
-+ sappend(sjset_qos, s_ld_a_2);
|
|
-+ sappend(s_ld_a_2, s_add_a_x);
|
|
-+ sappend(s_add_a_x,s_a_to_x);
|
|
-+ sappend(s_a_to_x, s_load);
|
|
-+
|
|
-+ return s;
|
|
-+ }
|
|
-
|
|
- /*
|
|
- * Load a value relative to the beginning of the specified header.
|
|
-***************
|
|
-*** 1367,1372 ****
|
|
- s = gen_load_llrel(offset, size);
|
|
- break;
|
|
-
|
|
- case OR_NET:
|
|
- s = gen_load_llrel(off_nl + offset, size);
|
|
- break;
|
|
---- 1504,1525 ----
|
|
- s = gen_load_llrel(offset, size);
|
|
- break;
|
|
-
|
|
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
|
|
-+
|
|
-+ case OR_LINK_AFTER_WIRELESS_HDR:
|
|
-+ if (linktype != DLT_IEEE802_11_RADIO
|
|
-+ && linktype != DLT_PPI
|
|
-+ && linktype != DLT_IEEE802_11
|
|
-+ && linktype != DLT_PRISM_HEADER
|
|
-+ && linktype != DLT_IEEE802_11_RADIO_AVS)
|
|
-+ {
|
|
-+ abort();
|
|
-+ return NULL;
|
|
-+ }
|
|
-+ s = gen_load_ll_after_802_11_rel(offset + 24, size);
|
|
-+ break;
|
|
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
|
|
-+
|
|
- case OR_NET:
|
|
- s = gen_load_llrel(off_nl + offset, size);
|
|
- break;
|
|
-***************
|
|
-*** 2163,2173 ****
|
|
- break;
|
|
-
|
|
- case DLT_PPI:
|
|
- case DLT_FDDI:
|
|
- case DLT_IEEE802:
|
|
-- case DLT_IEEE802_11:
|
|
- case DLT_IEEE802_11_RADIO_AVS:
|
|
-- case DLT_IEEE802_11_RADIO:
|
|
- case DLT_PRISM_HEADER:
|
|
- case DLT_ATM_RFC1483:
|
|
- case DLT_ATM_CLIP:
|
|
---- 2316,2332 ----
|
|
- break;
|
|
-
|
|
- case DLT_PPI:
|
|
-+ case DLT_IEEE802_11_RADIO:
|
|
-+ case DLT_IEEE802_11:
|
|
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
|
|
-+ return gen_802_11_llc_linktype(proto);
|
|
-+ /*NOTREACHED*/
|
|
-+ break;
|
|
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
|
|
-+
|
|
- case DLT_FDDI:
|
|
- case DLT_IEEE802:
|
|
- case DLT_IEEE802_11_RADIO_AVS:
|
|
- case DLT_PRISM_HEADER:
|
|
- case DLT_ATM_RFC1483:
|
|
- case DLT_ATM_CLIP:
|
|
-***************
|
|
-*** 2711,2716 ****
|
|
- }
|
|
- }
|
|
-
|
|
- static struct block *
|
|
- gen_hostop(addr, mask, dir, proto, src_off, dst_off)
|
|
- bpf_u_int32 addr;
|
|
---- 2870,2982 ----
|
|
- }
|
|
- }
|
|
-
|
|
-+ /*
|
|
-+ * Generate code to match a particular packet type, for link-layer types
|
|
-+ * using 802.2 LLC headers.
|
|
-+ *
|
|
-+ * This is *NOT* used for Ethernet; "gen_ether_linktype()" is used
|
|
-+ * for that - it handles the D/I/X Ethernet vs. 802.3+802.2 issues.
|
|
-+ *
|
|
-+ * "proto" is an Ethernet type value, if > ETHERMTU, or an LLC SAP
|
|
-+ * value, if <= ETHERMTU. We use that to determine whether to
|
|
-+ * match the DSAP or both DSAP and LSAP or to check the OUI and
|
|
-+ * protocol ID in a SNAP header.
|
|
-+ */
|
|
-+ static struct block *
|
|
-+ gen_802_11_llc_linktype(proto)
|
|
-+ int proto;
|
|
-+ {
|
|
-+ struct block *b_check_data_frame;
|
|
-+ struct block *b_check_linktype;
|
|
-+
|
|
-+ b_check_data_frame = gen_check_802_11_data_frame();
|
|
-+
|
|
-+ /*
|
|
-+ * XXX - generate the code that discards non data frames
|
|
-+ */
|
|
-+ switch (proto) {
|
|
-+
|
|
-+ case LLCSAP_IP:
|
|
-+ case LLCSAP_ISONS:
|
|
-+ case LLCSAP_NETBEUI:
|
|
-+ /*
|
|
-+ * XXX - should we check both the DSAP and the
|
|
-+ * SSAP, like this, or should we check just the
|
|
-+ * DSAP, as we do for other types <= ETHERMTU
|
|
-+ * (i.e., other SAP values)?
|
|
-+ */
|
|
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_H, (bpf_u_int32)
|
|
-+ ((proto << 8) | proto));
|
|
-+ break;
|
|
-+
|
|
-+ case LLCSAP_IPX:
|
|
-+ /*
|
|
-+ * XXX - are there ever SNAP frames for IPX on
|
|
-+ * non-Ethernet 802.x networks?
|
|
-+ */
|
|
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_B,
|
|
-+ (bpf_int32)LLCSAP_IPX);
|
|
-+
|
|
-+ break;
|
|
-+
|
|
-+ #if 0
|
|
-+ case ETHERTYPE_ATALK:
|
|
-+ /*
|
|
-+ * 802.2-encapsulated ETHERTYPE_ATALK packets are
|
|
-+ * SNAP packets with an organization code of
|
|
-+ * 0x080007 (Apple, for Appletalk) and a protocol
|
|
-+ * type of ETHERTYPE_ATALK (Appletalk).
|
|
-+ *
|
|
-+ * XXX - check for an organization code of
|
|
-+ * encapsulated Ethernet as well?
|
|
-+ */
|
|
-+ return gen_snap(0x080007, ETHERTYPE_ATALK, off_linktype);
|
|
-+ #endif
|
|
-+ default:
|
|
-+ /*
|
|
-+ * XXX - we don't have to check for IPX 802.3
|
|
-+ * here, but should we check for the IPX Ethertype?
|
|
-+ */
|
|
-+ if (proto <= ETHERMTU) {
|
|
-+ /*
|
|
-+ * This is an LLC SAP value, so check
|
|
-+ * the DSAP.
|
|
-+ */
|
|
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0, BPF_B,
|
|
-+ (bpf_int32)proto);
|
|
-+ } else {
|
|
-+ /*
|
|
-+ * This is an Ethernet type; we assume that it's
|
|
-+ * unlikely that it'll appear in the right place
|
|
-+ * at random, and therefore check only the
|
|
-+ * location that would hold the Ethernet type
|
|
-+ * in a SNAP frame with an organization code of
|
|
-+ * 0x000000 (encapsulated Ethernet).
|
|
-+ *
|
|
-+ * XXX - if we were to check for the SNAP DSAP and
|
|
-+ * LSAP, as per XXX, and were also to check for an
|
|
-+ * organization code of 0x000000 (encapsulated
|
|
-+ * Ethernet), we'd do
|
|
-+ *
|
|
-+ * return gen_snap(0x000000, proto,
|
|
-+ * off_linktype);
|
|
-+ *
|
|
-+ * here; for now, we don't, as per the above.
|
|
-+ * I don't know whether it's worth the extra CPU
|
|
-+ * time to do the right check or not.
|
|
-+ */
|
|
-+ b_check_linktype = gen_cmp(OR_LINK_AFTER_WIRELESS_HDR, 0+6, BPF_H,
|
|
-+ (bpf_int32)proto);
|
|
-+ }
|
|
-+ }
|
|
-+
|
|
-+ gen_and(b_check_data_frame, b_check_linktype);
|
|
-+ return b_check_linktype;
|
|
-+
|
|
-+ }
|
|
-+
|
|
-+
|
|
-+
|
|
- static struct block *
|
|
- gen_hostop(addr, mask, dir, proto, src_off, dst_off)
|
|
- bpf_u_int32 addr;
|
|
-***************
|
|
-*** 2925,2930 ****
|
|
- register struct block *b0, *b1, *b2;
|
|
- register struct slist *s;
|
|
-
|
|
- switch (dir) {
|
|
- case Q_SRC:
|
|
- /*
|
|
---- 3191,3207 ----
|
|
- register struct block *b0, *b1, *b2;
|
|
- register struct slist *s;
|
|
-
|
|
-+ #ifdef ENABLE_WLAN_FILTERING_PATCH
|
|
-+ /*
|
|
-+ * TODO GV 20070613
|
|
-+ * We need to disable the optimizer because the optimizer is buggy
|
|
-+ * and wipes out some LD instructions generated by the below
|
|
-+ * code to validate the Frame Control bits
|
|
-+ *
|
|
-+ */
|
|
-+ no_optimize = 1;
|
|
-+ #endif /* ENABLE_WLAN_FILTERING_PATCH */
|
|
-+
|
|
- switch (dir) {
|
|
- case Q_SRC:
|
|
- /*
|
|
-***************
|
|
-*** 4713,4718 ****
|
|
- #endif
|
|
- }
|
|
-
|
|
-
|
|
- /*
|
|
- * Generate code that checks whether the packet is a packet for protocol
|
|
---- 4990,5021 ----
|
|
- #endif
|
|
- }
|
|
-
|
|
-+ static struct block *
|
|
-+ gen_check_802_11_data_frame()
|
|
-+ {
|
|
-+ struct slist *s;
|
|
-+ struct block *b0, *b1;
|
|
-+ /*
|
|
-+ * Now check for a data frame.
|
|
-+ * I.e, check "link[0] & 0x08".
|
|
-+ */
|
|
-+ s = gen_load_a(OR_LINK, 0, BPF_B);
|
|
-+ b0 = new_block(JMP(BPF_JSET));
|
|
-+ b0->s.k = 0x08;
|
|
-+ b0->stmts = s;
|
|
-+
|
|
-+ s = gen_load_a(OR_LINK, 0, BPF_B);
|
|
-+ b1 = new_block(JMP(BPF_JSET));
|
|
-+ b1->s.k = 0x04;
|
|
-+ b1->stmts = s;
|
|
-+ gen_not(b1);
|
|
-+
|
|
-+
|
|
-+ gen_and(b1, b0);
|
|
-+
|
|
-+ return b0;
|
|
-+ }
|
|
-+
|
|
-
|
|
- /*
|
|
- * Generate code that checks whether the packet is a packet for protocol
|