From 5082dfb71600b4d227c3f0af630c0cd3158e1feb Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Thu, 8 Nov 2012 11:41:39 +0000 Subject: [PATCH] PPC: net: bpf_jit_comp: add VLAN instructions for BPF JIT This patch is a follow-up for patch "net: filter: add vlan tag access" to support the new VLAN_TAG/VLAN_TAG_PRESENT accessors in BPF JIT. Signed-off-by: Daniel Borkmann Cc: Matt Evans Cc: Benjamin Herrenschmidt Acked-by: Matt Evans Signed-off-by: David S. Miller --- arch/powerpc/net/bpf_jit_comp.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index b9434de..e834f1e 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -13,6 +13,8 @@ #include #include #include +#include + #include "bpf_jit.h" #ifndef __BIG_ENDIAN @@ -89,6 +91,8 @@ static void bpf_jit_build_prologue(struct sk_filter *fp, u32 *image, case BPF_S_ANC_IFINDEX: case BPF_S_ANC_MARK: case BPF_S_ANC_RXHASH: + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: case BPF_S_ANC_CPU: case BPF_S_ANC_QUEUE: case BPF_S_LD_W_ABS: @@ -382,6 +386,16 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, PPC_LWZ_OFFS(r_A, r_skb, offsetof(struct sk_buff, rxhash)); break; + case BPF_S_ANC_VLAN_TAG: + case BPF_S_ANC_VLAN_TAG_PRESENT: + BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2); + PPC_LHZ_OFFS(r_A, r_skb, offsetof(struct sk_buff, + vlan_tci)); + if (filter[i].code == BPF_S_ANC_VLAN_TAG) + PPC_ANDI(r_A, r_A, VLAN_VID_MASK); + else + PPC_ANDI(r_A, r_A, VLAN_TAG_PRESENT); + break; case BPF_S_ANC_QUEUE: BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, queue_mapping) != 2); -- 2.7.4