diff options
Diffstat (limited to '')
| -rw-r--r-- | net/core/filter.c | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 353735575204..12c88c21b6b8 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -4815,7 +4815,15 @@ static int bpf_push_seg6_encap(struct sk_buff *skb, u32 type, void *hdr, u32 len } #endif /* CONFIG_IPV6_SEG6_BPF */ -BPF_CALL_4(bpf_lwt_push_encap, struct sk_buff *, skb, u32, type, void *, hdr, +#if IS_ENABLED(CONFIG_LWTUNNEL_BPF) +static int bpf_push_ip_encap(struct sk_buff *skb, void *hdr, u32 len, + bool ingress) +{ + return -EINVAL; /* Implemented in the next patch. */ +} +#endif + +BPF_CALL_4(bpf_lwt_in_push_encap, struct sk_buff *, skb, u32, type, void *, hdr, u32, len) { switch (type) { @@ -4824,13 +4832,40 @@ BPF_CALL_4(bpf_lwt_push_encap, struct sk_buff *, skb, u32, type, void *, hdr, case BPF_LWT_ENCAP_SEG6_INLINE: return bpf_push_seg6_encap(skb, type, hdr, len); #endif +#if IS_ENABLED(CONFIG_LWTUNNEL_BPF) + case BPF_LWT_ENCAP_IP: + return bpf_push_ip_encap(skb, hdr, len, true /* ingress */); +#endif + default: + return -EINVAL; + } +} + +BPF_CALL_4(bpf_lwt_xmit_push_encap, struct sk_buff *, skb, u32, type, + void *, hdr, u32, len) +{ + switch (type) { +#if IS_ENABLED(CONFIG_LWTUNNEL_BPF) + case BPF_LWT_ENCAP_IP: + return bpf_push_ip_encap(skb, hdr, len, false /* egress */); +#endif default: return -EINVAL; } } -static const struct bpf_func_proto bpf_lwt_push_encap_proto = { - .func = bpf_lwt_push_encap, +static const struct bpf_func_proto bpf_lwt_in_push_encap_proto = { + .func = bpf_lwt_in_push_encap, + .gpl_only = false, + .ret_type = RET_INTEGER, + .arg1_type = ARG_PTR_TO_CTX, + .arg2_type = ARG_ANYTHING, + .arg3_type = ARG_PTR_TO_MEM, + .arg4_type = ARG_CONST_SIZE +}; + +static const struct bpf_func_proto bpf_lwt_xmit_push_encap_proto = { + .func = bpf_lwt_xmit_push_encap, .gpl_only = false, .ret_type = RET_INTEGER, .arg1_type = ARG_PTR_TO_CTX, @@ -5417,7 +5452,8 @@ bool bpf_helper_changes_pkt_data(void *func) func == bpf_lwt_seg6_adjust_srh || func == bpf_lwt_seg6_action || #endif - func == bpf_lwt_push_encap) + func == bpf_lwt_in_push_encap || + func == bpf_lwt_xmit_push_encap) return true; return false; @@ -5815,7 +5851,7 @@ lwt_in_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) { switch (func_id) { case BPF_FUNC_lwt_push_encap: - return &bpf_lwt_push_encap_proto; + return &bpf_lwt_in_push_encap_proto; default: return lwt_out_func_proto(func_id, prog); } @@ -5851,6 +5887,8 @@ lwt_xmit_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) return &bpf_l4_csum_replace_proto; case BPF_FUNC_set_hash_invalid: return &bpf_set_hash_invalid_proto; + case BPF_FUNC_lwt_push_encap: + return &bpf_lwt_xmit_push_encap_proto; default: return lwt_out_func_proto(func_id, prog); } |