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bpf: fix recurring typo in documentation for BPF helpers
"Underlaying packet buffer" should be an "underlying" one, in the warning about invalidated data and data_end pointers. Through copy-and-paste, the typo occurred no fewer than 19 times in the documentation. Let's fix it. Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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@ -629,7 +629,7 @@ union bpf_attr {
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* **BPF_F_INVALIDATE_HASH** (set *skb*\ **->hash**, *skb*\
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* **->swhash** and *skb*\ **->l4hash** to 0).
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -654,7 +654,7 @@ union bpf_attr {
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* flexibility and can handle sizes larger than 2 or 4 for the
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* checksum to update.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -686,7 +686,7 @@ union bpf_attr {
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* flexibility and can handle sizes larger than 2 or 4 for the
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* checksum to update.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -741,7 +741,7 @@ union bpf_attr {
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* efficient, but it is handled through an action code where the
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* redirection happens only after the eBPF program has returned.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -806,7 +806,7 @@ union bpf_attr {
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* **ETH_P_8021Q** and **ETH_P_8021AD**, it is considered to
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* be **ETH_P_8021Q**.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -818,7 +818,7 @@ union bpf_attr {
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* Description
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* Pop a VLAN header from the packet associated to *skb*.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1168,7 +1168,7 @@ union bpf_attr {
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* All values for *flags* are reserved for future usage, and must
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* be left at zero.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1281,7 +1281,7 @@ union bpf_attr {
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* implicitly linearizes, unclones and drops offloads from the
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* *skb*.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1317,7 +1317,7 @@ union bpf_attr {
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* **bpf_skb_pull_data()** to effectively unclone the *skb* from
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* the very beginning in case it is indeed cloned.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1369,7 +1369,7 @@ union bpf_attr {
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* All values for *flags* are reserved for future usage, and must
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* be left at zero.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1384,7 +1384,7 @@ union bpf_attr {
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* can be used to prepare the packet for pushing or popping
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* headers.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1531,7 +1531,7 @@ union bpf_attr {
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* Use with ENCAP_L3/L4 flags to further specify the tunnel
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* type; **len** is the length of the inner MAC header.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1610,7 +1610,7 @@ union bpf_attr {
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* more flexibility as the user is free to store whatever meta
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* data they need.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1852,7 +1852,7 @@ union bpf_attr {
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* copied if necessary (i.e. if data was not linear and if start
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* and end pointers do not point to the same chunk).
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -1886,7 +1886,7 @@ union bpf_attr {
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* only possible to shrink the packet as of this writing,
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* therefore *delta* must be a negative integer.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -2072,7 +2072,7 @@ union bpf_attr {
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* by bpf programs of types BPF_PROG_TYPE_LWT_IN and
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* BPF_PROG_TYPE_LWT_XMIT.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -2087,7 +2087,7 @@ union bpf_attr {
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* inside the outermost IPv6 Segment Routing Header can be
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* modified through this helper.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -2103,7 +2103,7 @@ union bpf_attr {
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* after the segments are accepted. *delta* can be as well
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* positive (growing) as negative (shrinking).
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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@ -2132,7 +2132,7 @@ union bpf_attr {
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* encapsulation policy.
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* Type of param: **struct ipv6_sr_hdr**.
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*
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* A call to this helper is susceptible to change the underlaying
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* A call to this helper is susceptible to change the underlying
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* packet buffer. Therefore, at load time, all checks on pointers
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* previously done by the verifier are invalidated and must be
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* performed again, if the helper is used in combination with
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