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a ]�hb � @ sv d Z ddlZddlmZ ddlmZmZ ddlmZ ddlm Z ddl m Z m Z dd � Zd d � ZG d d � d ee �ZdS )a+ u32 +++ Filters can take an `action` argument, which affects the packet behavior when the filter matches. Currently the gact, bpf, and police action types are supported, and can be attached to the u32 and bpf filter types:: # An action can be a simple string, which translates to a gact type action = "drop" # Or it can be an explicit type (these are equivalent) action = dict(kind="gact", action="drop") # There can also be a chain of actions, which depend on the return # value of the previous action. action = [ dict(kind="bpf", fd=fd, name=name, action="ok"), dict(kind="police", rate="10kbit", burst=10240, limit=0), dict(kind="gact", action="ok"), ] # Add the action to a u32 match-all filter ip.tc("add", "htb", eth0, 0x10000, default=0x200000) ip.tc("add-filter", "u32", eth0, parent=0x10000, prio=10, protocol=protocols.ETH_P_ALL, target=0x10020, keys=["0x0/0x0+0"], action=action) # Add two more filters: One to send packets with a src address of # 192.168.0.1/32 into 1:10 and the second to send packets with a # dst address of 192.168.0.0/24 into 1:20 ip.tc("add-filter", "u32", eth0, parent=0x10000, prio=10, protocol=protocols.ETH_P_IP, target=0x10010, keys=["0xc0a80001/0xffffffff+12"]) # 0xc0a800010 = 192.168.0.1 # 0xffffffff = 255.255.255.255 (/32) # 12 = Source network field bit offset ip.tc("add-filter", "u32", eth0, parent=0x10000, prio=10, protocol=protocols.ETH_P_IP, target=0x10020, keys=["0xc0a80000/0xffffff00+16"]) # 0xc0a80000 = 192.168.0.0 # 0xffffff00 = 255.255.255.0 (/24) # 16 = Destination network field bit offset � N)�htons)�nla�nlmsg)�get_parameters)�nla_plus_police)�get_tca_action� tca_act_prioc C s0 t |�dd�d@ �|�dd�d> d@ B | d< d S )N�protocolr i�� �prio� l � �info)r �get)�msg�kwarg� r ��/root/rpmbuild/BUILDROOT/imh-python39-modules-3.9.7-92.el8.x86_64/opt/imh-python/lib/python3.9/site-packages/pyroute2/netlink/rtnl/tcmsg/cls_u32.py�fix_msgE s �r c C s~ dg i}| � d�r*|d �dt| �g� n | � d�rJ|d �dt| �g� |d �d| d g� |d �dd | d ig� |S ) N�attrsZrate�TCA_U32_POLICE�action� TCA_U32_ACT�TCA_U32_CLASSID�target� TCA_U32_SEL�keys)r �append� ap_parametersr )r �retr r r r K s r c @ sD e Zd ZdZeZG dd� de�ZG dd� de�ZG dd� de�ZdS ) �options) )ZTCA_U32_UNSPEC�none)r �uint32)Z TCA_U32_HASHr )Z TCA_U32_LINK�hex)ZTCA_U32_DIVISORr )r �u32_sel)r Zpolice)r r )Z TCA_U32_INDEVr! )Z TCA_U32_PCNT�u32_pcnt)Z TCA_U32_MARK�u32_markc @ s0 e Zd ZdZG dd� de�Zdd� Zdd� ZdS ) zoptions.u32_sel) )�flags�B)Zoffshiftr& )�nkeysr& )Z__align�x)Zoffmaskz>H)�off�H)Zoffoff�h)Zhoffr+ )Zhmask�>Ic @ s e Zd ZdZdZdS )zoptions.u32_sel.u32_keyN))�key_maskr, )�key_valr, )�key_off�i)Z key_offmaskr0 )�__name__� __module__� __qualname__�header�fieldsr r r r �u32_keyw s r6 c C s� dd� }dd� t d�D �}g }| d D �]4}||d�\}}||d�\}}t|d �}||d �\}}|d d � d kr�|d d � }|d d � dkr�|d7 }|d d � }q|q�q|d | }t|d �}t|d �}d} |d k�r |d k�r | j| jd�}||d< ||d< ||d< |�|� t�dt�d|��D ]<} | d k�rP|| | > @ | ? } | | f||< |d7 }| d8 } �q q&d }d }d }t d�D ]�}|| \} } | d k�r�|d u �r�| j| jd�}||d< d |d< d |d< d} |d u�rr| d k�rr|d | | > O < |d | | > O < | d8 } | d k �s|dk�rr|�|� d }�qr|�s8td��t |�| d< d| d< t � | � | j d }|D ] }||_ |� � |d 7 }�qd|| j | _ t�d | j| j || j � d S ) aK Key sample:: 'keys': ['0x0006/0x00ff+8', '0x0000/0xffc0+2', '0x5/0xf+0', '0x10/0xff+33'] => 00060000/00ff0000 + 8 05000000/0f00ffc0 + 0 00100000/00ff0000 + 32 c S s> d}| � |�}| }|dkr6| |d d� }| d|� }||fS )zJ split a field from the end of the string �0r � N)�find)�key� separator�field�posZnew_keyr r r � cut_field� s z)options.u32_sel.encode.<locals>.cut_fieldc S s g | ]}d �qS ))r r r )�.0r0 r r r � <listcomp>� � z*options.u32_sel.encode.<locals>.<listcomp>� r �@�+r �/N� �0xZ00r8 � )�datar/ r- r. Z4Br, � � zno keys specifiedr' r% � r r* )�range�intr6 rI r �struct�unpack�pack� ValueError�lenr �encode�offset�length� pack_into) �selfr> r4 r r: ZnhrU �mask�value�bitsZbmaskZbvaluer r r rT � sx zoptions.u32_sel.encodec C sd t �| � | jd }g | d< | d }|r`| j| j|d�}|�� |d7 }| d �|� |d8 }q$d S )Nr r r' )rI rU r8 )r �decoderU r6 rI r )rX rU r' r: r r r r\ � s zoptions.u32_sel.decodeN)r1 r2 r3 r5 r r6 rT r\ r r r r r" j s dr" c @ s e Zd ZdZdS )zoptions.u32_mark))�val�I)rY r^ )�successr^ N�r1 r2 r3 r5 r r r r r$ � s r$ c @ s e Zd ZdZdS )zoptions.u32_pcnt))Zrcnt�Q)Zrhitra )Zkcntsra Nr` r r r r r# � s r# N) r1 r2 r3 Znla_mapr r r" r$ r# r r r r r Y s r )�__doc__rO �socketr Zpyroute2.netlinkr r Z&pyroute2.netlink.rtnl.tcmsg.act_policer r r Z&pyroute2.netlink.rtnl.tcmsg.common_actr r r r r r r r �<module> s 9
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