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Commit 1447f93f authored by Nicolas Schichan's avatar Nicolas Schichan Committed by David S. Miller
Browse files

ARM: net: add support for BPF_ANC | SKF_AD_PKTTYPE in ARM JIT. 



Signed-off-by: default avatarNicolas Schichan <nschichan@freebox.fr>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e11f40b9

arch/arm/net/bpf_jit_32.c

+11 −0
Original line number Diff line number Diff line
@@ -895,6 +895,17 @@ static int build_body(struct jit_ctx *ctx) 
				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,