adding further BPF program flags for Linux.

[ref](https://sites.uclouvain.be/SystInfo/usr/include/linux/filter.h.html)

(backport <#4356>)
(cherry picked from commit 9b8242d)

Author: devnexen

libc-test/semver/linux-aarch64.txt

@@ -2,10 +2,12 @@ B2500000
 B3000000
 B3500000
 B4000000
+BPF_A
 BPF_ABS
 BPF_ADD
 BPF_ALU
 BPF_B
+BPF_CLASS
 BPF_DIV
 BPF_H
 BPF_IMM
@@ -25,15 +27,21 @@ BPF_MEM
 BPF_MISC
 BPF_MISCOP
 BPF_MOD
+BPF_MODE
 BPF_MSH
 BPF_NEG
 BPF_NET_OFF
+BPF_OP
 BPF_RET
 BPF_RVAL
+BPF_SIZE
+BPF_SRC
 BPF_ST
 BPF_STMT
 BPF_STX
 BPF_SUB
+BPF_TAX
+BPF_TXA
 BPF_W
 BPF_X
 BPF_XOR

libc-test/semver/linux-loongarch64.txt

@@ -2,10 +2,12 @@ B2500000
 B3000000
 B3500000
 B4000000
+BPF_A
 BPF_ABS
 BPF_ADD
 BPF_ALU
 BPF_B
+BPF_CLASS
 BPF_DIV
 BPF_H
 BPF_IMM
@@ -25,15 +27,21 @@ BPF_MEM
 BPF_MISC
 BPF_MISCOP
 BPF_MOD
+BPF_MODE
 BPF_MSH
 BPF_NEG
 BPF_NET_OFF
+BPF_OP
 BPF_RET
 BPF_RVAL
+BPF_SIZE
+BPF_SRC
 BPF_ST
 BPF_STMT
 BPF_STX
 BPF_SUB
+BPF_TAX
+BPF_TXA
 BPF_W
 BPF_X
 BPF_XOR

libc-test/semver/linux-x86_64.txt

@@ -2,10 +2,12 @@ B2500000
 B3000000
 B3500000
 B4000000
+BPF_A
 BPF_ABS
 BPF_ADD
 BPF_ALU
 BPF_B
+BPF_CLASS
 BPF_DIV
 BPF_H
 BPF_IMM
@@ -25,15 +27,21 @@ BPF_MEM
 BPF_MISC
 BPF_MISCOP
 BPF_MOD
+BPF_MODE
 BPF_MSH
 BPF_NEG
 BPF_NET_OFF
+BPF_OP
 BPF_RET
 BPF_RVAL
+BPF_SIZE
+BPF_SRC
 BPF_ST
 BPF_STMT
 BPF_STX
 BPF_SUB
+BPF_TAX
+BPF_TXA
 BPF_W
 BPF_X
 BPF_XOR

src/unix/linux_like/linux/mod.rs

@@ -3492,6 +3492,12 @@ pub const BPF_JSET: __u32 = 0x40;
 pub const BPF_K: __u32 = 0x00;
 pub const BPF_X: __u32 = 0x08;
 
+// linux/filter.h
+
+pub const BPF_A: __u32 = 0x10;
+pub const BPF_TAX: __u32 = 0x00;
+pub const BPF_TXA: __u32 = 0x80;
+
 // linux/openat2.h
 pub const RESOLVE_NO_XDEV: crate::__u64 = 0x01;
 pub const RESOLVE_NO_MAGICLINKS: crate::__u64 = 0x02;
@@ -6169,6 +6175,26 @@ f! {
         (x + TPACKET_ALIGNMENT - 1) & !(TPACKET_ALIGNMENT - 1)
     }
 
+    pub fn BPF_CLASS(code: __u32) -> __u32 {
+        code & 0x07
+    }
+
+    pub fn BPF_SIZE(code: __u32) -> __u32 {
+        code & 0x18
+    }
+
+    pub fn BPF_MODE(code: __u32) -> __u32 {
+        code & 0xe0
+    }
+
+    pub fn BPF_OP(code: __u32) -> __u32 {
+        code & 0xf0
+    }
+
+    pub fn BPF_SRC(code: __u32) -> __u32 {
+        code & 0x08
+    }
+
     pub fn BPF_RVAL(code: __u32) -> __u32 {
         code & 0x18
     }