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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
2020-10-12 09:52:58 -07:00
committed by Andrii Nakryiko
parent d47094a2ce
commit bc94c2b82f
1 changed files with 66 additions and 5 deletions
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71
src/bpf_helper_defs.h
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@@ -1196,7 +1196,7 @@ static long (*bpf_set_hash)(struct __sk_buff *skb, __u32 hash) = (void *) 48;
* **TCP_CONGESTION**, **TCP_BPF_IW**,
* **TCP_BPF_SNDCWND_CLAMP**, **TCP_SAVE_SYN**,
* **TCP_KEEPIDLE**, **TCP_KEEPINTVL**, **TCP_KEEPCNT**,
* **TCP_SYNCNT**, **TCP_USER_TIMEOUT**.
* **TCP_SYNCNT**, **TCP_USER_TIMEOUT**, **TCP_NOTSENT_LOWAT**.
* * **IPPROTO_IP**, which supports *optname* **IP_TOS**.
* * **IPPROTO_IPV6**, which supports *optname* **IPV6_TCLASS**.
*
@@ -1843,7 +1843,7 @@ static long (*bpf_msg_redirect_hash)(struct sk_msg_md *msg, void *map, void *key
*
* This helper is used in programs implementing policies at the
* skb socket level. If the sk_buff *skb* is allowed to pass (i.e.
* if the verdeict eBPF program returns **SK_PASS**), redirect it
* if the verdict eBPF program returns **SK_PASS**), redirect it
* to the socket referenced by *map* (of type
* **BPF_MAP_TYPE_SOCKHASH**) using hash *key*. Both ingress and
* egress interfaces can be used for redirection. The
@@ -3540,10 +3540,14 @@ static __u64 (*bpf_skb_cgroup_classid)(struct __sk_buff *skb) = (void *) 151;
* Redirect the packet to another net device of index *ifindex*
* and fill in L2 addresses from neighboring subsystem. This helper
* is somewhat similar to **bpf_redirect**\ (), except that it
* fills in e.g. MAC addresses based on the L3 information from
* the packet. This helper is supported for IPv4 and IPv6 protocols.
* populates L2 addresses as well, meaning, internally, the helper
* performs a FIB lookup based on the skb's networking header to
* get the address of the next hop and then relies on the neighbor
* lookup for the L2 address of the nexthop.
*
* The *flags* argument is reserved and must be 0. The helper is
* currently only supported for tc BPF program types.
* currently only supported for tc BPF program types, and enabled
* for IPv4 and IPv6 protocols.
*
* Returns
* The helper returns **TC_ACT_REDIRECT** on success or
@@ -3551,4 +3555,61 @@ static __u64 (*bpf_skb_cgroup_classid)(struct __sk_buff *skb) = (void *) 151;
*/
static long (*bpf_redirect_neigh)(__u32 ifindex, __u64 flags) = (void *) 152;
/*
* bpf_per_cpu_ptr
*
* Take a pointer to a percpu ksym, *percpu_ptr*, and return a
* pointer to the percpu kernel variable on *cpu*. A ksym is an
* extern variable decorated with '__ksym'. For ksym, there is a
* global var (either static or global) defined of the same name
* in the kernel. The ksym is percpu if the global var is percpu.
* The returned pointer points to the global percpu var on *cpu*.
*
* bpf_per_cpu_ptr() has the same semantic as per_cpu_ptr() in the
* kernel, except that bpf_per_cpu_ptr() may return NULL. This
* happens if *cpu* is larger than nr_cpu_ids. The caller of
* bpf_per_cpu_ptr() must check the returned value.
*
* Returns
* A pointer pointing to the kernel percpu variable on *cpu*, or
* NULL, if *cpu* is invalid.
*/
static void *(*bpf_per_cpu_ptr)(const void *percpu_ptr, __u32 cpu) = (void *) 153;
/*
* bpf_this_cpu_ptr
*
* Take a pointer to a percpu ksym, *percpu_ptr*, and return a
* pointer to the percpu kernel variable on this cpu. See the
* description of 'ksym' in **bpf_per_cpu_ptr**\ ().
*
* bpf_this_cpu_ptr() has the same semantic as this_cpu_ptr() in
* the kernel. Different from **bpf_per_cpu_ptr**\ (), it would
* never return NULL.
*
* Returns
* A pointer pointing to the kernel percpu variable on this cpu.
*/
static void *(*bpf_this_cpu_ptr)(const void *percpu_ptr) = (void *) 154;
/*
* bpf_redirect_peer
*
* Redirect the packet to another net device of index *ifindex*.
* This helper is somewhat similar to **bpf_redirect**\ (), except
* that the redirection happens to the *ifindex*' peer device and
* the netns switch takes place from ingress to ingress without
* going through the CPU's backlog queue.
*
* The *flags* argument is reserved and must be 0. The helper is
* currently only supported for tc BPF program types at the ingress
* hook and for veth device types. The peer device must reside in a
* different network namespace.
*
* Returns
* The helper returns **TC_ACT_REDIRECT** on success or
* **TC_ACT_SHOT** on error.
*/
static long (*bpf_redirect_peer)(__u32 ifindex, __u64 flags) = (void *) 155;