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sync: auto-generate latest BPF helpers

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Latest changes to BPF helper definitions.
This commit is contained in:
Andrii Nakryiko
2022-06-23 10:45:25 -07:00
committed by Andrii Nakryiko
parent ec718073b0
commit 78909b8caf
1 changed files with 98 additions and 4 deletions
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102
src/bpf_helper_defs.h
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@@ -40,6 +40,8 @@ struct file;
struct bpf_timer;
struct mptcp_sock;
struct bpf_dynptr;
struct iphdr;
struct ipv6hdr;
/*
* bpf_map_lookup_elem
@@ -2463,10 +2465,11 @@ static struct bpf_sock *(*bpf_skc_lookup_tcp)(void *ctx, struct bpf_sock_tuple *
*
* *iph* points to the start of the IPv4 or IPv6 header, while
* *iph_len* contains **sizeof**\ (**struct iphdr**) or
* **sizeof**\ (**struct ip6hdr**).
* **sizeof**\ (**struct ipv6hdr**).
*
* *th* points to the start of the TCP header, while *th_len*
* contains **sizeof**\ (**struct tcphdr**).
* contains the length of the TCP header (at least
* **sizeof**\ (**struct tcphdr**)).
*
* Returns
* 0 if *iph* and *th* are a valid SYN cookie ACK, or a negative
@@ -2689,10 +2692,11 @@ static long (*bpf_send_signal)(__u32 sig) = (void *) 109;
*
* *iph* points to the start of the IPv4 or IPv6 header, while
* *iph_len* contains **sizeof**\ (**struct iphdr**) or
* **sizeof**\ (**struct ip6hdr**).
* **sizeof**\ (**struct ipv6hdr**).
*
* *th* points to the start of the TCP header, while *th_len*
* contains the length of the TCP header.
* contains the length of the TCP header with options (at least
* **sizeof**\ (**struct tcphdr**)).
*
* Returns
* On success, lower 32 bits hold the generated SYN cookie in
@@ -4481,4 +4485,94 @@ static long (*bpf_dynptr_write)(struct bpf_dynptr *dst, __u32 offset, void *src,
*/
static void *(*bpf_dynptr_data)(struct bpf_dynptr *ptr, __u32 offset, __u32 len) = (void *) 203;
/*
* bpf_tcp_raw_gen_syncookie_ipv4
*
* Try to issue a SYN cookie for the packet with corresponding
* IPv4/TCP headers, *iph* and *th*, without depending on a
* listening socket.
*
* *iph* points to the IPv4 header.
*
* *th* points to the start of the TCP header, while *th_len*
* contains the length of the TCP header (at least
* **sizeof**\ (**struct tcphdr**)).
*
* Returns
* On success, lower 32 bits hold the generated SYN cookie in
* followed by 16 bits which hold the MSS value for that cookie,
* and the top 16 bits are unused.
*
* On failure, the returned value is one of the following:
*
* **-EINVAL** if *th_len* is invalid.
*/
static __s64 (*bpf_tcp_raw_gen_syncookie_ipv4)(struct iphdr *iph, struct tcphdr *th, __u32 th_len) = (void *) 204;
/*
* bpf_tcp_raw_gen_syncookie_ipv6
*
* Try to issue a SYN cookie for the packet with corresponding
* IPv6/TCP headers, *iph* and *th*, without depending on a
* listening socket.
*
* *iph* points to the IPv6 header.
*
* *th* points to the start of the TCP header, while *th_len*
* contains the length of the TCP header (at least
* **sizeof**\ (**struct tcphdr**)).
*
* Returns
* On success, lower 32 bits hold the generated SYN cookie in
* followed by 16 bits which hold the MSS value for that cookie,
* and the top 16 bits are unused.
*
* On failure, the returned value is one of the following:
*
* **-EINVAL** if *th_len* is invalid.
*
* **-EPROTONOSUPPORT** if CONFIG_IPV6 is not builtin.
*/
static __s64 (*bpf_tcp_raw_gen_syncookie_ipv6)(struct ipv6hdr *iph, struct tcphdr *th, __u32 th_len) = (void *) 205;
/*
* bpf_tcp_raw_check_syncookie_ipv4
*
* Check whether *iph* and *th* contain a valid SYN cookie ACK
* without depending on a listening socket.
*
* *iph* points to the IPv4 header.
*
* *th* points to the TCP header.
*
* Returns
* 0 if *iph* and *th* are a valid SYN cookie ACK.
*
* On failure, the returned value is one of the following:
*
* **-EACCES** if the SYN cookie is not valid.
*/
static long (*bpf_tcp_raw_check_syncookie_ipv4)(struct iphdr *iph, struct tcphdr *th) = (void *) 206;
/*
* bpf_tcp_raw_check_syncookie_ipv6
*
* Check whether *iph* and *th* contain a valid SYN cookie ACK
* without depending on a listening socket.
*
* *iph* points to the IPv6 header.
*
* *th* points to the TCP header.
*
* Returns
* 0 if *iph* and *th* are a valid SYN cookie ACK.
*
* On failure, the returned value is one of the following:
*
* **-EACCES** if the SYN cookie is not valid.
*
* **-EPROTONOSUPPORT** if CONFIG_IPV6 is not builtin.
*/
static long (*bpf_tcp_raw_check_syncookie_ipv6)(struct ipv6hdr *iph, struct tcphdr *th) = (void *) 207;