Universal 32-bit Classifier
[Classifiers]

Attribute Modifications



void rtnl_u32_set_handle (struct rtnl_cls *cls, int htid, int hash, int nodeid)
int rtnl_u32_set_classid (struct rtnl_cls *cls, uint32_t classid)

Selector Modifications



int rtnl_u32_set_flags (struct rtnl_cls *cls, int flags)
int rtnl_u32_add_key (struct rtnl_cls *cls, uint32_t val, uint32_t mask, int off, int offmask)
 Append new 32-bit key to the selector.
int rtnl_u32_add_key_uint8 (struct rtnl_cls *cls, uint8_t val, uint8_t mask, int off, int offmask)
int rtnl_u32_add_key_uint16 (struct rtnl_cls *cls, uint16_t val, uint16_t mask, int off, int offmask)
 Append new selector key to match a 16-bit number.
int rtnl_u32_add_key_uint32 (struct rtnl_cls *cls, uint32_t val, uint32_t mask, int off, int offmask)
 Append new selector key to match a 32-bit number.
int rtnl_u32_add_key_in_addr (struct rtnl_cls *cls, struct in_addr *addr, uint8_t bitmask, int off, int offmask)
int rtnl_u32_add_key_in6_addr (struct rtnl_cls *cls, struct in6_addr *addr, uint8_t bitmask, int off, int offmask)

Function Documentation

int rtnl_u32_add_key ( struct rtnl_cls *  cls,
uint32_t  val,
uint32_t  mask,
int  off,
int  offmask 
)

Append new 32-bit key to the selector.

Parameters:
cls classifier to be modifier
val value to be matched (network byte-order)
mask mask to be applied before matching (network byte-order)
off offset, in bytes, to start matching
offmask offset mask

General selectors define the pattern, mask and offset the pattern will be matched to the packet contents. Using the general selectors you can match virtually any single bit in the IP (or upper layer) header.

Definition at line 416 of file u32.c.

References nl_data_append(), and TC_CAST.

Referenced by rtnl_u32_add_key_uint16(), and rtnl_u32_add_key_uint32().

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int rtnl_u32_add_key_uint16 ( struct rtnl_cls *  cls,
uint16_t  val,
uint16_t  mask,
int  off,
int  offmask 
)

Append new selector key to match a 16-bit number.

Parameters:
cls classifier to be modified
val value to be matched (host byte-order)
mask mask to be applied before matching (host byte-order)
off offset, in bytes, to start matching
offmask offset mask

Definition at line 466 of file u32.c.

References rtnl_u32_add_key().

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int rtnl_u32_add_key_uint32 ( struct rtnl_cls *  cls,
uint32_t  val,
uint32_t  mask,
int  off,
int  offmask 
)

Append new selector key to match a 32-bit number.

Parameters:
cls classifier to be modified
val value to be matched (host byte-order)
mask mask to be applied before matching (host byte-order)
off offset, in bytes, to start matching
offmask offset mask

Definition at line 487 of file u32.c.

References rtnl_u32_add_key().

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