[PATCH 2/3] tools: sync changes to uapi/linux/bpf.h
From: Lorenz Bauer <hidden>
Date: 2019-02-22 09:51:26
Also in:
netdev
Subsystem:
the rest · Maintainer:
Linus Torvalds
Pull in definitions for bpf_sk_check_syncookie. Signed-off-by: Lorenz Bauer <redacted> --- tools/include/uapi/linux/bpf.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index bcdd2474eee7..bc2af87e9621 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h@@ -2359,6 +2359,21 @@ union bpf_attr { * Return * A **struct bpf_tcp_sock** pointer on success, or NULL in * case of failure. + * + * int bpf_sk_check_syncookie(struct bpf_sock *sk, void *iph, u32 iph_len, struct tcphdr *th, u32 th_len) + * Description + * Check whether iph and th contain a valid SYN cookie ACK for + * the listening socket in sk. + * + * iph points to the start of the IPv4 or IPv6 header, while + * iph_len contains sizeof(struct iphdr) or sizeof(struct ip6hdr). + * + * th points to the start of the TCP header, while th_len contains + * sizeof(struct tcphdr). + * + * Return + * 0 if iph and th are a valid SYN cookie ACK, or a negative error + * otherwise. */ #define __BPF_FUNC_MAPPER(FN) \ FN(unspec), \
@@ -2457,7 +2472,8 @@ union bpf_attr { FN(spin_lock), \ FN(spin_unlock), \ FN(sk_fullsock), \ - FN(tcp_sock), + FN(tcp_sock), \ + FN(sk_check_syncookie), /* integer value in 'imm' field of BPF_CALL instruction selects which helper * function eBPF program intends to call
--
2.19.1