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| author | Andre Guedes <[email protected]> | 2021-04-23 06:25:54 +0000 |
|---|---|---|
| committer | Tony Nguyen <[email protected]> | 2021-05-20 17:21:42 +0000 |
| commit | fc9df2a0b520d7d439ecf464794d53e91be74b93 (patch) | |
| tree | 547b81536f114ee36929461a74f92ce1ea96bc61 /drivers/net/ethernet/intel/igc/igc_base.h | |
| parent | igc: Replace IGC_TX_FLAGS_XDP flag by an enum (diff) | |
| download | kernel-fc9df2a0b520d7d439ecf464794d53e91be74b93.tar.gz kernel-fc9df2a0b520d7d439ecf464794d53e91be74b93.zip | |
igc: Enable RX via AF_XDP zero-copy
Add support for receiving packets via AF_XDP zero-copy mechanism.
Add a new flag to 'enum igc_ring_flags_t' to indicate the ring has
AF_XDP zero-copy enabled so proper ring setup is carried out during ring
configuration in igc_configure_rx_ring().
RX buffers can now be allocated via the shared pages mechanism (default
behavior of the driver) or via xsk pool (when AF_XDP zero-copy is
enabled) so a union is added to the 'struct igc_rx_buffer' to cover both
cases.
When AF_XDP zero-copy is enabled, rx buffers are allocated from the xsk
pool using the new helper igc_alloc_rx_buffers_zc() which is the
counterpart of igc_alloc_rx_buffers().
Likewise other Intel drivers that support AF_XDP zero-copy, in igc we
have a dedicated path for cleaning up rx irqs when zero-copy is enabled.
This avoids adding too many checks within igc_clean_rx_irq(), resulting
in a more readable and efficient code since this function is called from
the hot-path of the driver.
Signed-off-by: Andre Guedes <[email protected]>
Signed-off-by: Vedang Patel <[email protected]>
Signed-off-by: Jithu Joseph <[email protected]>
Reviewed-by: Maciej Fijalkowski <[email protected]>
Tested-by: Dvora Fuxbrumer <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_base.h')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_base.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_base.h b/drivers/net/ethernet/intel/igc/igc_base.h index ea627ce52525..2ca028c1919f 100644 --- a/drivers/net/ethernet/intel/igc/igc_base.h +++ b/drivers/net/ethernet/intel/igc/igc_base.h @@ -81,6 +81,7 @@ union igc_adv_rx_desc { /* Additional Receive Descriptor Control definitions */ #define IGC_RXDCTL_QUEUE_ENABLE 0x02000000 /* Ena specific Rx Queue */ +#define IGC_RXDCTL_SWFLUSH 0x04000000 /* Receive Software Flush */ /* SRRCTL bit definitions */ #define IGC_SRRCTL_BSIZEPKT_SHIFT 10 /* Shift _right_ */ |