#include <stdint.h>
#include <rte_mbuf.h>
Go to the source code of this file.
Interface to GRO library
Definition in file rte_gro.h.
◆ RTE_GRO_MAX_BURST_ITEM_NUM
| #define RTE_GRO_MAX_BURST_ITEM_NUM 128U |
◆ RTE_GRO_TYPE_MAX_NUM
| #define RTE_GRO_TYPE_MAX_NUM 64 |
the max number of supported GRO types
Definition at line 24 of file rte_gro.h.
◆ RTE_GRO_TYPE_SUPPORT_NUM
| #define RTE_GRO_TYPE_SUPPORT_NUM 2 |
the number of currently supported GRO types
Definition at line 26 of file rte_gro.h.
◆ RTE_GRO_TCP_IPV4
| #define RTE_GRO_TCP_IPV4 (1ULL << RTE_GRO_TCP_IPV4_INDEX) |
TCP/IPv4 GRO flag
Definition at line 30 of file rte_gro.h.
◆ RTE_GRO_IPV4_VXLAN_TCP_IPV4
| #define RTE_GRO_IPV4_VXLAN_TCP_IPV4 (1ULL << RTE_GRO_IPV4_VXLAN_TCP_IPV4_INDEX) |
VxLAN TCP/IPv4 GRO flag.
Definition at line 33 of file rte_gro.h.
◆ RTE_GRO_UDP_IPV4
| #define RTE_GRO_UDP_IPV4 (1ULL << RTE_GRO_UDP_IPV4_INDEX) |
UDP/IPv4 GRO flag
Definition at line 36 of file rte_gro.h.
◆ RTE_GRO_IPV4_VXLAN_UDP_IPV4
| #define RTE_GRO_IPV4_VXLAN_UDP_IPV4 (1ULL << RTE_GRO_IPV4_VXLAN_UDP_IPV4_INDEX) |
VxLAN UDP/IPv4 GRO flag.
Definition at line 39 of file rte_gro.h.
◆ rte_gro_ctx_create()
- Warning
- EXPERIMENTAL: this API may change without prior notice
This function create a GRO context object, which is used to merge packets in rte_gro_reassemble().
- Parameters
-
| param | applications use it to pass needed parameters to create a GRO context object. |
- Returns
- if create successfully, return a pointer which points to the GRO context object. Otherwise, return NULL.
◆ rte_gro_ctx_destroy()
| void rte_gro_ctx_destroy |
( |
void * |
ctx | ) |
|
- Warning
- EXPERIMENTAL: this API may change without prior notice
This function destroys a GRO context object.
- Parameters
-
| ctx | pointer points to a GRO context object. |
◆ rte_gro_reassemble_burst()
| uint16_t rte_gro_reassemble_burst |
( |
struct rte_mbuf ** |
pkts, |
|
|
uint16_t |
nb_pkts, |
|
|
const struct rte_gro_param * |
param |
|
) |
| |
This is one of the main reassembly APIs, which merges numbers of packets at a time. It doesn't check if input packets have correct checksums and doesn't re-calculate checksums for merged packets. It assumes the packets are complete (i.e., MF==0 && frag_off==0), when IP fragmentation is possible (i.e., DF==0). The GROed packets are returned as soon as the function finishes.
- Parameters
-
| pkts | Pointer array pointing to the packets to reassemble. Besides, it keeps MBUF addresses for the GROed packets. |
| nb_pkts | The number of packets to reassemble |
| param | Application-determined parameters for reassembling packets. |
- Returns
- The number of packets after been GROed. If no packets are merged, the return value is equals to nb_pkts.
◆ rte_gro_reassemble()
| uint16_t rte_gro_reassemble |
( |
struct rte_mbuf ** |
pkts, |
|
|
uint16_t |
nb_pkts, |
|
|
void * |
ctx |
|
) |
| |
- Warning
- EXPERIMENTAL: this API may change without prior notice
Reassembly function, which tries to merge input packets with the existed packets in the reassembly tables of a given GRO context. It doesn't check if input packets have correct checksums and doesn't re-calculate checksums for merged packets. Additionally, it assumes the packets are complete (i.e., MF==0 && frag_off==0), when IP fragmentation is possible (i.e., DF==0).
If the input packets have invalid parameters (e.g. no data payload, unsupported GRO types), they are returned to applications. Otherwise, they are either merged or inserted into the table. Applications need to flush packets from the tables by flush API, if they want to get the GROed packets.
- Parameters
-
| pkts | Packets to reassemble. It's also used to store the unprocessed packets. |
| nb_pkts | The number of packets to reassemble |
| ctx | GRO context object pointer |
- Returns
- The number of unprocessed packets.
◆ rte_gro_timeout_flush()
| uint16_t rte_gro_timeout_flush |
( |
void * |
ctx, |
|
|
uint64_t |
timeout_cycles, |
|
|
uint64_t |
gro_types, |
|
|
struct rte_mbuf ** |
out, |
|
|
uint16_t |
max_nb_out |
|
) |
| |
- Warning
- EXPERIMENTAL: this API may change without prior notice
This function flushes the timeout packets from the reassembly tables of desired GRO types. The max number of flushed packets is the element number of 'out'.
Additionally, the flushed packets may have incorrect checksums, since this function doesn't re-calculate checksums for merged packets.
- Parameters
-
| ctx | GRO context object pointer. |
| timeout_cycles | The max TTL for packets in reassembly tables, measured in nanosecond. |
| gro_types | This function flushes packets whose GRO types are specified by gro_types. |
| out | Pointer array used to keep flushed packets. |
| max_nb_out | The element number of 'out'. It's also the max number of timeout packets that can be flushed finally. |
- Returns
- The number of flushed packets.
◆ rte_gro_get_pkt_count()
| uint64_t rte_gro_get_pkt_count |
( |
void * |
ctx | ) |
|
- Warning
- EXPERIMENTAL: this API may change without prior notice
This function returns the number of packets in all reassembly tables of a given GRO context.
- Parameters
-
| ctx | GRO context object pointer. |
- Returns
- The number of packets in the tables.
