diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2022-03-18 16:58:31 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2022-03-23 18:47:15 +0000 |
| commit | 219cbcb29fdcd9d76d7fe00c5a5e074f8e149083 (patch) | |
| tree | 8d7addee9bb3e23dff3c3998cd2b06c1a6274f21 /src/vnet/devices/af_packet/device.c | |
| parent | 8d7cdc808fdb810a843b48bfcca358cf083c04e8 (diff) | |
devices: af-packet v3 support
Type: feature
CPU usage ~20% less than v2.
Performance improvement 20% more than v2.
High vector rate.
Change-Id: I24bc594200f42664b59d07b44d44578e61068bbc
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vnet/devices/af_packet/device.c')
| -rw-r--r-- | src/vnet/devices/af_packet/device.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c index c8e59c3566c..23b18832cc8 100644 --- a/src/vnet/devices/af_packet/device.c +++ b/src/vnet/devices/af_packet/device.c @@ -83,9 +83,9 @@ format_af_packet_device (u8 * s, va_list * args) u32 rx_frame_nr = apif->rx_req->tp_frame_nr; u32 rx_block_nr = apif->rx_req->tp_block_nr; int block = 0; - u8 *tx_block_start = apif->tx_ring + block * tx_block_sz; + u8 *tx_block_start = apif->tx_ring[block]; u32 tx_frame = apif->next_tx_frame; - struct tpacket2_hdr *tph; + tpacket3_hdr_t *tph; s = format (s, "Linux PACKET socket interface\n"); s = format (s, "%UTX block size:%d nr:%d TX frame size:%d nr:%d\n", @@ -100,7 +100,7 @@ format_af_packet_device (u8 * s, va_list * args) int n_send_req = 0, n_avail = 0, n_sending = 0, n_tot = 0, n_wrong = 0; do { - tph = (struct tpacket2_hdr *) (tx_block_start + tx_frame * tx_frame_sz); + tph = (struct tpacket3_hdr *) (tx_block_start + tx_frame * tx_frame_sz); tx_frame = (tx_frame + 1) % tx_frame_nr; if (tph->tp_status == 0) n_avail++; @@ -140,13 +140,12 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm, af_packet_if_t *apif = pool_elt_at_index (apm->interfaces, rd->dev_instance); clib_spinlock_lock_if_init (&apif->lockp); - int block = 0; - u32 block_size = apif->tx_req->tp_block_size; + u32 block = 0; u32 frame_size = apif->tx_req->tp_frame_size; u32 frame_num = apif->tx_req->tp_frame_nr; - u8 *block_start = apif->tx_ring + block * block_size; + u8 *block_start = apif->tx_ring[block]; u32 tx_frame = apif->next_tx_frame; - struct tpacket2_hdr *tph; + tpacket3_hdr_t *tph; u32 frame_not_ready = 0; while (n_left) @@ -158,7 +157,7 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm, u32 bi = buffers[0]; buffers++; - tph = (struct tpacket2_hdr *) (block_start + tx_frame * frame_size); + tph = (struct tpacket3_hdr *) (block_start + tx_frame * frame_size); if (PREDICT_FALSE (tph->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING))) { @@ -170,9 +169,9 @@ VNET_DEVICE_CLASS_TX_FN (af_packet_device_class) (vlib_main_t * vm, { b0 = vlib_get_buffer (vm, bi); len = b0->current_length; - clib_memcpy_fast ((u8 *) tph + - TPACKET_ALIGN (sizeof (struct tpacket2_hdr)) + - offset, vlib_buffer_get_current (b0), len); + clib_memcpy_fast ( + (u8 *) tph + TPACKET_ALIGN (sizeof (struct tpacket3_hdr)) + offset, + vlib_buffer_get_current (b0), len); offset += len; } while ((bi = |