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| struct pkt_buff * | pktb_alloc (int family, void *data, size_t len, size_t extra) |
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| uint8_t * | pktb_data (struct pkt_buff *pktb) |
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| uint32_t | pktb_len (struct pkt_buff *pktb) |
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| void | pktb_free (struct pkt_buff *pktb) |
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| void | pktb_push (struct pkt_buff *pktb, unsigned int len) |
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| void | pktb_pull (struct pkt_buff *pktb, unsigned int len) |
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| void | pktb_put (struct pkt_buff *pktb, unsigned int len) |
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| void | pktb_trim (struct pkt_buff *pktb, unsigned int len) |
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| unsigned int | pktb_tailroom (struct pkt_buff *pktb) |
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| uint8_t * | pktb_mac_header (struct pkt_buff *pktb) |
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| uint8_t * | pktb_network_header (struct pkt_buff *pktb) |
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| uint8_t * | pktb_transport_header (struct pkt_buff *pktb) |
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int | pktb_mangle (struct pkt_buff *pkt, unsigned int dataoff, unsigned int match_offset, unsigned int match_len, const char *rep_buffer, unsigned int rep_len) |
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| bool | pktb_mangled (const struct pkt_buff *pkt) |
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This library provides the user-space network packet buffer. This abstraction is strongly inspired by Linux kernel network buffer, the so-called sk_buff.
| struct pkt_buff* pktb_alloc |
( |
int |
family, |
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void * |
data, |
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|
size_t |
len, |
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|
size_t |
extra |
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) |
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pktb_alloc - allocate a new packet buffer
- Parameters
-
| family | Indicate what family, eg. AF_BRIDGE, AF_INET, AF_INET6, ... |
| data | Pointer to packet data |
| len | Packet length |
| extra | Extra memory in the tail to be allocated (for mangling) |
This function returns a packet buffer that contains the packet data and some extra memory room in the tail (in case of requested).
- Returns
- a pointer to a new queue handle or NULL on failure.
Definition at line 44 of file pktbuff.c.
| uint8_t* pktb_data |
( |
struct pkt_buff * |
pktb | ) |
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pktb_data - return pointer to the beginning of the packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 93 of file pktbuff.c.
| void pktb_free |
( |
struct pkt_buff * |
pktb | ) |
|
pktb_free - release packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 113 of file pktbuff.c.
| uint32_t pktb_len |
( |
struct pkt_buff * |
pktb | ) |
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pktb_len - return length of the packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 103 of file pktbuff.c.
| uint8_t* pktb_mac_header |
( |
struct pkt_buff * |
pktb | ) |
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pktb_mac_header - return pointer to layer 2 header (if any)
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 176 of file pktbuff.c.
| bool pktb_mangled |
( |
const struct pkt_buff * |
pkt | ) |
|
pktb_mangled - return true if packet has been mangled
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 267 of file pktbuff.c.
| uint8_t* pktb_network_header |
( |
struct pkt_buff * |
pktb | ) |
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pktb_network_header - return pointer to layer 3 header
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 186 of file pktbuff.c.
| void pktb_pull |
( |
struct pkt_buff * |
pktb, |
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unsigned int |
len |
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) |
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pktb_pull - update pointer to the beginning of the packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 134 of file pktbuff.c.
| void pktb_push |
( |
struct pkt_buff * |
pktb, |
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unsigned int |
len |
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) |
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pktb_push - update pointer to the beginning of the packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 123 of file pktbuff.c.
| void pktb_put |
( |
struct pkt_buff * |
pktb, |
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unsigned int |
len |
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) |
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pktb_put - add extra bytes to the tail of the packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 145 of file pktbuff.c.
| unsigned int pktb_tailroom |
( |
struct pkt_buff * |
pktb | ) |
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pktb_tailroom - get room in bytes in the tail of the packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 166 of file pktbuff.c.
| uint8_t* pktb_transport_header |
( |
struct pkt_buff * |
pktb | ) |
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pktb_transport_header - return pointer to layer 4 header (if any)
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 196 of file pktbuff.c.
| void pktb_trim |
( |
struct pkt_buff * |
pktb, |
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unsigned int |
len |
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) |
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pktb_trim - set new length for this packet buffer
- Parameters
-
| pktb | Pointer to packet buffer |
Definition at line 156 of file pktbuff.c.
