Struct esp_idf_svc::sys::pbuf

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#[repr(C)]
pub struct pbuf { pub next: *mut pbuf, pub payload: *mut c_void, pub tot_len: u16, pub len: u16, pub type_internal: u8, pub flags: u8, pub ref_: u8, pub if_idx: u8, }
Expand description

Main packet buffer struct

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§next: *mut pbuf

next pbuf in singly linked pbuf chain

§payload: *mut c_void

pointer to the actual data in the buffer

§tot_len: u16

total length of this buffer and all next buffers in chain belonging to the same packet.

For non-queue packet chains this is the invariant: p->tot_len == p->len + (p->next? p->next->tot_len: 0)

§len: u16

length of this buffer

§type_internal: u8

a bit field indicating pbuf type and allocation sources (see PBUF_TYPE_FLAG_, PBUF_ALLOC_FLAG_ and PBUF_TYPE_ALLOC_SRC_MASK)

§flags: u8

misc flags

§ref_: u8

the reference count always equals the number of pointers that refer to this pbuf. This can be pointers from an application, the stack itself, or pbuf->next pointers from a chain.

§if_idx: u8

For incoming packets, this contains the input netif’s index

Trait Implementations§

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impl Clone for pbuf

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fn clone(&self) -> pbuf

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for pbuf

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for pbuf

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fn default() -> pbuf

Returns the “default value” for a type. Read more
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impl Copy for pbuf

Auto Trait Implementations§

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impl Freeze for pbuf

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impl RefUnwindSafe for pbuf

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impl !Send for pbuf

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impl !Sync for pbuf

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impl Unpin for pbuf

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impl UnwindSafe for pbuf

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.