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-rw-r--r--arch/arm/boot/dts/am33xx.dtsi2
-rw-r--r--arch/arm/boot/dts/dra7.dtsi2
-rw-r--r--arch/arm/net/bpf_jit_32.c41
-rw-r--r--arch/arm/net/bpf_jit_32.h3
-rw-r--r--arch/m68k/coldfire/m5272.c2
-rw-r--r--arch/mips/ar7/platform.c5
-rw-r--r--arch/mips/bcm47xx/setup.c2
-rw-r--r--arch/s390/net/bpf_jit.h5
-rw-r--r--arch/s390/net/bpf_jit_comp.c93
-rw-r--r--arch/sparc/net/bpf_jit_comp.c2
-rw-r--r--arch/x86/net/bpf_jit_comp.c88
11 files changed, 151 insertions, 94 deletions
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 9117c1a1a4e2..d23e2524d694 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -717,7 +717,7 @@
};
mac: ethernet@4a100000 {
- compatible = "ti,cpsw";
+ compatible = "ti,am335x-cpsw","ti,cpsw";
ti,hwmods = "cpgmac0";
clocks = <&cpsw_125mhz_gclk>, <&cpsw_cpts_rft_clk>;
clock-names = "fck", "cpts";
diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi
index a0d3d4bfe9cb..5d65db9ebc2b 100644
--- a/arch/arm/boot/dts/dra7.dtsi
+++ b/arch/arm/boot/dts/dra7.dtsi
@@ -1418,7 +1418,7 @@
};
mac: ethernet@4a100000 {
- compatible = "ti,cpsw";
+ compatible = "ti,dra7-cpsw","ti,cpsw";
ti,hwmods = "gmac";
clocks = <&dpll_gmac_ck>, <&gmac_gmii_ref_clk_div>;
clock-names = "fck", "cpts";
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index c011e2296cb1..876060bcceeb 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -857,7 +857,9 @@ b_epilogue:
emit(ARM_LDR_I(r_A, r_scratch, off), ctx);
break;
case BPF_ANC | SKF_AD_IFINDEX:
+ case BPF_ANC | SKF_AD_HATYPE:
/* A = skb->dev->ifindex */
+ /* A = skb->dev->type */
ctx->seen |= SEEN_SKB;
off = offsetof(struct sk_buff, dev);
emit(ARM_LDR_I(r_scratch, r_skb, off), ctx);
@@ -867,8 +869,24 @@ b_epilogue:
BUILD_BUG_ON(FIELD_SIZEOF(struct net_device,
ifindex) != 4);
- off = offsetof(struct net_device, ifindex);
- emit(ARM_LDR_I(r_A, r_scratch, off), ctx);
+ BUILD_BUG_ON(FIELD_SIZEOF(struct net_device,
+ type) != 2);
+
+ if (code == (BPF_ANC | SKF_AD_IFINDEX)) {
+ off = offsetof(struct net_device, ifindex);
+ emit(ARM_LDR_I(r_A, r_scratch, off), ctx);
+ } else {
+ /*
+ * offset of field "type" in "struct
+ * net_device" is above what can be
+ * used in the ldrh rd, [rn, #imm]
+ * instruction, so load the offset in
+ * a register and use ldrh rd, [rn, rm]
+ */
+ off = offsetof(struct net_device, type);
+ emit_mov_i(ARM_R3, off, ctx);
+ emit(ARM_LDRH_R(r_A, r_scratch, ARM_R3), ctx);
+ }
break;
case BPF_ANC | SKF_AD_MARK:
ctx->seen |= SEEN_SKB;
@@ -895,6 +913,17 @@ b_epilogue:
OP_IMM3(ARM_AND, r_A, r_A, 0x1, ctx);
}
break;
+ case BPF_ANC | SKF_AD_PKTTYPE:
+ ctx->seen |= SEEN_SKB;
+ BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
+ __pkt_type_offset[0]) != 1);
+ off = PKT_TYPE_OFFSET();
+ emit(ARM_LDRB_I(r_A, r_skb, off), ctx);
+ emit(ARM_AND_I(r_A, r_A, PKT_TYPE_MAX), ctx);
+#ifdef __BIG_ENDIAN_BITFIELD
+ emit(ARM_LSR_I(r_A, r_A, 5), ctx);
+#endif
+ break;
case BPF_ANC | SKF_AD_QUEUE:
ctx->seen |= SEEN_SKB;
BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff,
@@ -904,6 +933,14 @@ b_epilogue:
off = offsetof(struct sk_buff, queue_mapping);
emit(ARM_LDRH_I(r_A, r_skb, off), ctx);
break;
+ case BPF_ANC | SKF_AD_PAY_OFFSET:
+ ctx->seen |= SEEN_SKB | SEEN_CALL;
+
+ emit(ARM_MOV_R(ARM_R0, r_skb), ctx);
+ emit_mov_i(ARM_R3, (unsigned int)skb_get_poff, ctx);
+ emit_blx_r(ARM_R3, ctx);
+ emit(ARM_MOV_R(r_A, ARM_R0), ctx);
+ break;
case BPF_LDX | BPF_W | BPF_ABS:
/*
* load a 32bit word from struct seccomp_data.
diff --git a/arch/arm/net/bpf_jit_32.h b/arch/arm/net/bpf_jit_32.h
index b2d7d92859d3..4b17d5ab652a 100644
--- a/arch/arm/net/bpf_jit_32.h
+++ b/arch/arm/net/bpf_jit_32.h
@@ -74,6 +74,7 @@
#define ARM_INST_LDRB_I 0x05d00000
#define ARM_INST_LDRB_R 0x07d00000
#define ARM_INST_LDRH_I 0x01d000b0
+#define ARM_INST_LDRH_R 0x019000b0
#define ARM_INST_LDR_I 0x05900000
#define ARM_INST_LDM 0x08900000
@@ -160,6 +161,8 @@
| (rm))
#define ARM_LDRH_I(rt, rn, off) (ARM_INST_LDRH_I | (rt) << 12 | (rn) << 16 \
| (((off) & 0xf0) << 4) | ((off) & 0xf))
+#define ARM_LDRH_R(rt, rn, rm) (ARM_INST_LDRH_R | (rt) << 12 | (rn) << 16 \
+ | (rm))
#define ARM_LDM(rn, regs) (ARM_INST_LDM | (rn) << 16 | (regs))
diff --git a/arch/m68k/coldfire/m5272.c b/arch/m68k/coldfire/m5272.c
index b15219ed22bf..c525e4c08f84 100644
--- a/arch/m68k/coldfire/m5272.c
+++ b/arch/m68k/coldfire/m5272.c
@@ -126,7 +126,7 @@ static struct fixed_phy_status nettel_fixed_phy_status __initdata = {
static int __init init_BSP(void)
{
m5272_uarts_init();
- fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status);
+ fixed_phy_add(PHY_POLL, 0, &nettel_fixed_phy_status, -1);
return 0;
}
diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
index be9ff1673ded..298b97715d5f 100644
--- a/arch/mips/ar7/platform.c
+++ b/arch/mips/ar7/platform.c
@@ -679,7 +679,8 @@ static int __init ar7_register_devices(void)
}
if (ar7_has_high_cpmac()) {
- res = fixed_phy_add(PHY_POLL, cpmac_high.id, &fixed_phy_status);
+ res = fixed_phy_add(PHY_POLL, cpmac_high.id,
+ &fixed_phy_status, -1);
if (!res) {
cpmac_get_mac(1, cpmac_high_data.dev_addr);
@@ -692,7 +693,7 @@ static int __init ar7_register_devices(void)
} else
cpmac_low_data.phy_mask = 0xffffffff;
- res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status);
+ res = fixed_phy_add(PHY_POLL, cpmac_low.id, &fixed_phy_status, -1);
if (!res) {
cpmac_get_mac(0, cpmac_low_data.dev_addr);
res = platform_device_register(&cpmac_low);
diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 98c075f81795..17503a05938e 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -263,7 +263,7 @@ static int __init bcm47xx_register_bus_complete(void)
bcm47xx_leds_register();
bcm47xx_workarounds();
- fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status);
+ fixed_phy_add(PHY_POLL, 0, &bcm47xx_fixed_phy_status, -1);
return 0;
}
device_initcall(bcm47xx_register_bus_complete);
diff --git a/arch/s390/net/bpf_jit.h b/arch/s390/net/bpf_jit.h
index f6498eec9ee1..f010c93a88b1 100644
--- a/arch/s390/net/bpf_jit.h
+++ b/arch/s390/net/bpf_jit.h
@@ -36,6 +36,8 @@ extern u8 sk_load_word[], sk_load_half[], sk_load_byte[];
* | BPF stack | |
* | | |
* +---------------+ |
+ * | 8 byte skbp | |
+ * R15+170 -> +---------------+ |
* | 8 byte hlen | |
* R15+168 -> +---------------+ |
* | 4 byte align | |
@@ -51,11 +53,12 @@ extern u8 sk_load_word[], sk_load_half[], sk_load_byte[];
* We get 160 bytes stack space from calling function, but only use
* 12 * 8 byte for old backchain, r15..r6, and tail_call_cnt.
*/
-#define STK_SPACE (MAX_BPF_STACK + 8 + 4 + 4 + 160)
+#define STK_SPACE (MAX_BPF_STACK + 8 + 8 + 4 + 4 + 160)
#define STK_160_UNUSED (160 - 12 * 8)
#define STK_OFF (STK_SPACE - STK_160_UNUSED)
#define STK_OFF_TMP 160 /* Offset of tmp buffer on stack */
#define STK_OFF_HLEN 168 /* Offset of SKB header length on stack */
+#define STK_OFF_SKBP 170 /* Offset of SKB pointer on stack */
#define STK_OFF_R6 (160 - 11 * 8) /* Offset of r6 on stack */
#define STK_OFF_TCCNT (160 - 12 * 8) /* Offset of tail_call_cnt on stack */
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index 8d2e5165865f..eeda051442c3 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -45,7 +45,7 @@ struct bpf_jit {
int labels[1]; /* Labels for local jumps */
};
-#define BPF_SIZE_MAX 4096 /* Max size for program */
+#define BPF_SIZE_MAX 0x7ffff /* Max size for program (20 bit signed displ) */
#define SEEN_SKB 1 /* skb access */
#define SEEN_MEM 2 /* use mem[] for temporary storage */
@@ -53,6 +53,7 @@ struct bpf_jit {
#define SEEN_LITERAL 8 /* code uses literals */
#define SEEN_FUNC 16 /* calls C functions */
#define SEEN_TAIL_CALL 32 /* code uses tail calls */
+#define SEEN_SKB_CHANGE 64 /* code changes skb data */
#define SEEN_STACK (SEEN_FUNC | SEEN_MEM | SEEN_SKB)
/*
@@ -203,19 +204,11 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32 b1)
_EMIT6(op1 | __disp, op2); \
})
-#define EMIT6_DISP(op1, op2, b1, b2, b3, disp) \
-({ \
- _EMIT6_DISP(op1 | reg(b1, b2) << 16 | \
- reg_high(b3) << 8, op2, disp); \
- REG_SET_SEEN(b1); \
- REG_SET_SEEN(b2); \
- REG_SET_SEEN(b3); \
-})
-
#define _EMIT6_DISP_LH(op1, op2, disp) \
({ \
- unsigned int __disp_h = ((u32)disp) & 0xff000; \
- unsigned int __disp_l = ((u32)disp) & 0x00fff; \
+ u32 _disp = (u32) disp; \
+ unsigned int __disp_h = _disp & 0xff000; \
+ unsigned int __disp_l = _disp & 0x00fff; \
_EMIT6(op1 | __disp_l, op2 | __disp_h >> 4); \
})
@@ -390,12 +383,32 @@ static void save_restore_regs(struct bpf_jit *jit, int op)
}
/*
+ * For SKB access %b1 contains the SKB pointer. For "bpf_jit.S"
+ * we store the SKB header length on the stack and the SKB data
+ * pointer in REG_SKB_DATA.
+ */
+static void emit_load_skb_data_hlen(struct bpf_jit *jit)
+{
+ /* Header length: llgf %w1,<len>(%b1) */
+ EMIT6_DISP_LH(0xe3000000, 0x0016, REG_W1, REG_0, BPF_REG_1,
+ offsetof(struct sk_buff, len));
+ /* s %w1,<data_len>(%b1) */
+ EMIT4_DISP(0x5b000000, REG_W1, BPF_REG_1,
+ offsetof(struct sk_buff, data_len));
+ /* stg %w1,ST_OFF_HLEN(%r0,%r15) */
+ EMIT6_DISP_LH(0xe3000000, 0x0024, REG_W1, REG_0, REG_15, STK_OFF_HLEN);
+ /* lg %skb_data,data_off(%b1) */
+ EMIT6_DISP_LH(0xe3000000, 0x0004, REG_SKB_DATA, REG_0,
+ BPF_REG_1, offsetof(struct sk_buff, data));
+}
+
+/*
* Emit function prologue
*
* Save registers and create stack frame if necessary.
* See stack frame layout desription in "bpf_jit.h"!
*/
-static void bpf_jit_prologue(struct bpf_jit *jit)
+static void bpf_jit_prologue(struct bpf_jit *jit, bool is_classic)
{
if (jit->seen & SEEN_TAIL_CALL) {
/* xc STK_OFF_TCCNT(4,%r15),STK_OFF_TCCNT(%r15) */
@@ -429,32 +442,21 @@ static void bpf_jit_prologue(struct bpf_jit *jit)
EMIT6_DISP_LH(0xe3000000, 0x0024, REG_W1, REG_0,
REG_15, 152);
}
- /*
- * For SKB access %b1 contains the SKB pointer. For "bpf_jit.S"
- * we store the SKB header length on the stack and the SKB data
- * pointer in REG_SKB_DATA.
- */
- if (jit->seen & SEEN_SKB) {
- /* Header length: llgf %w1,<len>(%b1) */
- EMIT6_DISP_LH(0xe3000000, 0x0016, REG_W1, REG_0, BPF_REG_1,
- offsetof(struct sk_buff, len));
- /* s %w1,<data_len>(%b1) */
- EMIT4_DISP(0x5b000000, REG_W1, BPF_REG_1,
- offsetof(struct sk_buff, data_len));
- /* stg %w1,ST_OFF_HLEN(%r0,%r15) */
+ if (jit->seen & SEEN_SKB)
+ emit_load_skb_data_hlen(jit);
+ if (jit->seen & SEEN_SKB_CHANGE)
+ /* stg %b1,ST_OFF_SKBP(%r0,%r15) */
EMIT6_DISP_LH(0xe3000000, 0x0024, REG_W1, REG_0, REG_15,
- STK_OFF_HLEN);
- /* lg %skb_data,data_off(%b1) */
- EMIT6_DISP_LH(0xe3000000, 0x0004, REG_SKB_DATA, REG_0,
- BPF_REG_1, offsetof(struct sk_buff, data));
+ STK_OFF_SKBP);
+ /* Clear A (%b0) and X (%b7) registers for converted BPF programs */
+ if (is_classic) {
+ if (REG_SEEN(BPF_REG_A))
+ /* lghi %ba,0 */
+ EMIT4_IMM(0xa7090000, BPF_REG_A, 0);
+ if (REG_SEEN(BPF_REG_X))
+ /* lghi %bx,0 */
+ EMIT4_IMM(0xa7090000, BPF_REG_X, 0);
}
- /* BPF compatibility: clear A (%b0) and X (%b7) registers */
- if (REG_SEEN(BPF_REG_A))
- /* lghi %ba,0 */
- EMIT4_IMM(0xa7090000, BPF_REG_A, 0);
- if (REG_SEEN(BPF_REG_X))
- /* lghi %bx,0 */
- EMIT4_IMM(0xa7090000, BPF_REG_X, 0);
}
/*
@@ -976,12 +978,19 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i
REG_SET_SEEN(BPF_REG_5);
jit->seen |= SEEN_FUNC;
/* lg %w1,<d(imm)>(%l) */
- EMIT6_DISP(0xe3000000, 0x0004, REG_W1, REG_0, REG_L,
- EMIT_CONST_U64(func));
+ EMIT6_DISP_LH(0xe3000000, 0x0004, REG_W1, REG_0, REG_L,
+ EMIT_CONST_U64(func));
/* basr %r14,%w1 */
EMIT2(0x0d00, REG_14, REG_W1);
/* lgr %b0,%r2: load return value into %b0 */
EMIT4(0xb9040000, BPF_REG_0, REG_2);
+ if (bpf_helper_changes_skb_data((void *)func)) {
+ jit->seen |= SEEN_SKB_CHANGE;
+ /* lg %b1,ST_OFF_SKBP(%r15) */
+ EMIT6_DISP_LH(0xe3000000, 0x0004, BPF_REG_1, REG_0,
+ REG_15, STK_OFF_SKBP);
+ emit_load_skb_data_hlen(jit);
+ }
break;
}
case BPF_JMP | BPF_CALL | BPF_X:
@@ -1023,7 +1032,7 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i
MAX_TAIL_CALL_CNT, 0, 0x2);
/*
- * prog = array->prog[index];
+ * prog = array->ptrs[index];
* if (prog == NULL)
* goto out;
*/
@@ -1032,7 +1041,7 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i
EMIT6_DISP_LH(0xeb000000, 0x000d, REG_1, BPF_REG_3, REG_0, 3);
/* lg %r1,prog(%b2,%r1) */
EMIT6_DISP_LH(0xe3000000, 0x0004, REG_1, BPF_REG_2,
- REG_1, offsetof(struct bpf_array, prog));
+ REG_1, offsetof(struct bpf_array, ptrs));
/* clgij %r1,0,0x8,label0 */
EMIT6_PCREL_IMM_LABEL(0xec000000, 0x007d, REG_1, 0, 0, 0x8);
@@ -1236,7 +1245,7 @@ static int bpf_jit_prog(struct bpf_jit *jit, struct bpf_prog *fp)
jit->lit = jit->lit_start;
jit->prg = 0;
- bpf_jit_prologue(jit);
+ bpf_jit_prologue(jit, bpf_prog_was_classic(fp));
for (i = 0; i < fp->len; i += insn_count) {
insn_count = bpf_jit_insn(jit, fp, i);
if (insn_count < 0)
diff --git a/arch/sparc/net/bpf_jit_comp.c b/arch/sparc/net/bpf_jit_comp.c
index 7931eeeb649a..f8b9f71b9a2b 100644
--- a/arch/sparc/net/bpf_jit_comp.c
+++ b/arch/sparc/net/bpf_jit_comp.c
@@ -807,7 +807,7 @@ cond_branch: f_offset = addrs[i + filter[i].jf];
}
if (bpf_jit_enable > 1)
- bpf_jit_dump(flen, proglen, pass, image);
+ bpf_jit_dump(flen, proglen, pass + 1, image);
if (image) {
bpf_flush_icache(image, image + proglen);
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index be2e7a2b10d7..70efcd0940f9 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -246,7 +246,7 @@ static void emit_prologue(u8 **pprog)
* goto out;
* if (++tail_call_cnt > MAX_TAIL_CALL_CNT)
* goto out;
- * prog = array->prog[index];
+ * prog = array->ptrs[index];
* if (prog == NULL)
* goto out;
* goto *(prog->bpf_func + prologue_size);
@@ -284,9 +284,9 @@ static void emit_bpf_tail_call(u8 **pprog)
EMIT3(0x83, 0xC0, 0x01); /* add eax, 1 */
EMIT2_off32(0x89, 0x85, -STACKSIZE + 36); /* mov dword ptr [rbp - 516], eax */
- /* prog = array->prog[index]; */
+ /* prog = array->ptrs[index]; */
EMIT4_off32(0x48, 0x8D, 0x84, 0xD6, /* lea rax, [rsi + rdx * 8 + offsetof(...)] */
- offsetof(struct bpf_array, prog));
+ offsetof(struct bpf_array, ptrs));
EMIT3(0x48, 0x8B, 0x00); /* mov rax, qword ptr [rax] */
/* if (prog == NULL)
@@ -315,6 +315,26 @@ static void emit_bpf_tail_call(u8 **pprog)
*pprog = prog;
}
+
+static void emit_load_skb_data_hlen(u8 **pprog)
+{
+ u8 *prog = *pprog;
+ int cnt = 0;
+
+ /* r9d = skb->len - skb->data_len (headlen)
+ * r10 = skb->data
+ */
+ /* mov %r9d, off32(%rdi) */
+ EMIT3_off32(0x44, 0x8b, 0x8f, offsetof(struct sk_buff, len));
+
+ /* sub %r9d, off32(%rdi) */
+ EMIT3_off32(0x44, 0x2b, 0x8f, offsetof(struct sk_buff, data_len));
+
+ /* mov %r10, off32(%rdi) */
+ EMIT3_off32(0x4c, 0x8b, 0x97, offsetof(struct sk_buff, data));
+ *pprog = prog;
+}
+
static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
int oldproglen, struct jit_context *ctx)
{
@@ -329,36 +349,8 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
emit_prologue(&prog);
- if (seen_ld_abs) {
- /* r9d : skb->len - skb->data_len (headlen)
- * r10 : skb->data
- */
- if (is_imm8(offsetof(struct sk_buff, len)))
- /* mov %r9d, off8(%rdi) */
- EMIT4(0x44, 0x8b, 0x4f,
- offsetof(struct sk_buff, len));
- else
- /* mov %r9d, off32(%rdi) */
- EMIT3_off32(0x44, 0x8b, 0x8f,
- offsetof(struct sk_buff, len));
-
- if (is_imm8(offsetof(struct sk_buff, data_len)))
- /* sub %r9d, off8(%rdi) */
- EMIT4(0x44, 0x2b, 0x4f,
- offsetof(struct sk_buff, data_len));
- else
- EMIT3_off32(0x44, 0x2b, 0x8f,
- offsetof(struct sk_buff, data_len));
-
- if (is_imm8(offsetof(struct sk_buff, data)))
- /* mov %r10, off8(%rdi) */
- EMIT4(0x4c, 0x8b, 0x57,
- offsetof(struct sk_buff, data));
- else
- /* mov %r10, off32(%rdi) */
- EMIT3_off32(0x4c, 0x8b, 0x97,
- offsetof(struct sk_buff, data));
- }
+ if (seen_ld_abs)
+ emit_load_skb_data_hlen(&prog);
for (i = 0; i < insn_cnt; i++, insn++) {
const s32 imm32 = insn->imm;
@@ -367,6 +359,7 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image,
u8 b1 = 0, b2 = 0, b3 = 0;
s64 jmp_offset;
u8 jmp_cond;
+ bool reload_skb_data;
int ilen;
u8 *func;
@@ -818,12 +811,18 @@ xadd: if (is_imm8(insn->off))
func = (u8 *) __bpf_call_base + imm32;
jmp_offset = func - (image + addrs[i]);
if (seen_ld_abs) {
- EMIT2(0x41, 0x52); /* push %r10 */
- EMIT2(0x41, 0x51); /* push %r9 */
- /* need to adjust jmp offset, since
- * pop %r9, pop %r10 take 4 bytes after call insn
- */
- jmp_offset += 4;
+ reload_skb_data = bpf_helper_changes_skb_data(func);
+ if (reload_skb_data) {
+ EMIT1(0x57); /* push %rdi */
+ jmp_offset += 22; /* pop, mov, sub, mov */
+ } else {
+ EMIT2(0x41, 0x52); /* push %r10 */
+ EMIT2(0x41, 0x51); /* push %r9 */
+ /* need to adjust jmp offset, since
+ * pop %r9, pop %r10 take 4 bytes after call insn
+ */
+ jmp_offset += 4;
+ }
}
if (!imm32 || !is_simm32(jmp_offset)) {
pr_err("unsupported bpf func %d addr %p image %p\n",
@@ -832,8 +831,13 @@ xadd: if (is_imm8(insn->off))
}
EMIT1_off32(0xE8, jmp_offset);
if (seen_ld_abs) {
- EMIT2(0x41, 0x59); /* pop %r9 */
- EMIT2(0x41, 0x5A); /* pop %r10 */
+ if (reload_skb_data) {
+ EMIT1(0x5F); /* pop %rdi */
+ emit_load_skb_data_hlen(&prog);
+ } else {
+ EMIT2(0x41, 0x59); /* pop %r9 */
+ EMIT2(0x41, 0x5A); /* pop %r10 */
+ }
}
break;
@@ -1099,7 +1103,7 @@ void bpf_int_jit_compile(struct bpf_prog *prog)
}
if (bpf_jit_enable > 1)
- bpf_jit_dump(prog->len, proglen, 0, image);
+ bpf_jit_dump(prog->len, proglen, pass + 1, image);
if (image) {
bpf_flush_icache(header, image + proglen);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 10:33:59 +0000