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diff -uNpr vblade-15-orig/freebsd.c vblade-15-lsf/freebsd.c
--- vblade-15-orig/freebsd.c 2008-03-07 20:22:16.000000000 +0000
+++ vblade-15-lsf/freebsd.c 2008-04-30 10:45:11.000000000 +0100
@@ -54,40 +54,44 @@ dial(char *eth)
/* packet filter for bpf */
struct bpf_insn bpf_insns[] = {
- /* Load the type into register */
- BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
- /* Does it match AoE Type (0x88a2)? No, goto INVALID */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x88a2, 0, 10),
- /* Load the flags into register */
- BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 14),
- /* Check to see if the Resp flag is set */
- BPF_STMT(BPF_ALU+BPF_AND+BPF_K, Resp),
- /* Yes, goto INVALID */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 7),
- /* Load the command into register */
- BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 19),
- /* Is this a ATAcmd? No, goto VALID */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ATAcmd, 0, 4),
- /* Load the shelf number into register */
- BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 16),
- /* Does it match shelf number? No, goto INVALID */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) shelf, 0, 3),
- /* Load the slot number into register */
- BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 18),
- /* Does it match shelf number? No, goto INVALID */
- BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) slot, 0, 1),
- /* VALID: return -1 (allow the packet to be read) */
- BPF_STMT(BPF_RET+BPF_K, (u_int)-1),
- /* INVALID: return 0 (ignore the packet) */
- BPF_STMT(BPF_RET+BPF_K, 0),
+ /* Load the type into register */
+ BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
+ /* Does it match AoE Type (0x88a2)? No, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x88a2, 0, 12),
+ /* Load the flags into register */
+ BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 14),
+ /* Check to see if the Resp flag is set */
+ BPF_STMT(BPF_ALU+BPF_AND+BPF_K, Resp),
+ /* Yes, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 9),
+ /* Load the shelf number into register */
+ BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 16),
+ /* Does it match shelf number? No, goto CHECKBROADCAST */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) shelf, 0, 2),
+ /* Load the slot number into register */
+ BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 18),
+ /* Does it match shelf number? Yes, goto VALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) slot, 4, 0),
+ /* CHECKBROADCAST: is (shelf, slot) == (0xffff, 0xff)? */
+ /* Load the shelf number into register */
+ BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 16),
+ /* Is it 0xffff? No, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) 0xffff, 0, 3),
+ /* Load the slot number into register */
+ BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 18),
+ /* Is it 0xff? No, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) 0xff, 0, 1),
+ /* VALID: return -1 (allow the packet to be read) */
+ BPF_STMT(BPF_RET+BPF_K, (u_int) -1),
+ /* INVALID: return 0 (ignore the packet) */
+ BPF_STMT(BPF_RET+BPF_K, 0),
};
struct bpf_program bpf_program = {
- sizeof(bpf_insns)/sizeof(struct bpf_insn),
- bpf_insns
+ sizeof(bpf_insns)/sizeof(struct bpf_insn),
+ bpf_insns
};
-
-
+
strncpy(device, BPF_DEV, sizeof BPF_DEV);
/* find a bpf device we can use, check /dev/bpf[0-9] */
diff -uNpr vblade-15-orig/linux.c vblade-15-lsf/linux.c
--- vblade-15-orig/linux.c 2008-03-07 20:22:16.000000000 +0000
+++ vblade-15-lsf/linux.c 2008-04-30 10:46:04.000000000 +0100
@@ -22,6 +22,7 @@
#include <netinet/in.h>
#include <linux/fs.h>
#include <sys/stat.h>
+#include <pcap-bpf.h>
#include "dat.h"
#include "fns.h"
@@ -54,6 +55,49 @@ dial(char *eth) // get us a raw connect
perror("bind funky");
return -1;
}
+
+ /* bpf packet filter for socket */
+ struct bpf_insn bpf_insns[] = {
+ /* Load the type into register */
+ BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 12),
+ /* Does it match AoE Type (0x88a2)? No, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0x88a2, 0, 12),
+ /* Load the flags into register */
+ BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 14),
+ /* Check to see if the Resp flag is set */
+ BPF_STMT(BPF_ALU+BPF_AND+BPF_K, Resp),
+ /* Yes, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, 0, 0, 9),
+ /* Load the shelf number into register */
+ BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 16),
+ /* Does it match shelf number? No, goto CHECKBROADCAST */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) shelf, 0, 2),
+ /* Load the slot number into register */
+ BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 18),
+ /* Does it match shelf number? Yes, goto VALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) slot, 4, 0),
+ /* CHECKBROADCAST: is (shelf, slot) == (0xffff, 0xff)? */
+ /* Load the shelf number into register */
+ BPF_STMT(BPF_LD+BPF_H+BPF_ABS, 16),
+ /* Is it 0xffff? No, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) 0xffff, 0, 3),
+ /* Load the slot number into register */
+ BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 18),
+ /* Is it 0xff? No, goto INVALID */
+ BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, (u_int) 0xff, 0, 1),
+ /* VALID: return -1 (allow the packet to be read) */
+ BPF_STMT(BPF_RET+BPF_K, (u_int) -1),
+ /* INVALID: return 0 (ignore the packet) */
+ BPF_STMT(BPF_RET+BPF_K, 0),
+ };
+
+ struct bpf_program bpf_program = {
+ sizeof(bpf_insns)/sizeof(struct bpf_insn),
+ bpf_insns
+ };
+
+ setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, &bpf_program, sizeof(bpf_program));
+
return s;
}
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