diff options
| author |   Mohsin Kazmi <sykazmi@cisco.com> | 2021-02-10 11:26:24 +0100 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2021-02-15 20:32:56 +0000 |
| commit | 6809538e646bf86c000dc1faba60b0a4157ad898 (patch) | |
| tree | 18a228b96226932381f15e44b4972636de1c7fe1 /src/plugins/dpdk | |
| parent | 99c6dc6a7a36c0be95da9afb3ad8830b24754d4e (diff) | |
vlib: refactor checksum offload support
Type: refactor
This patch refactors the offload flags in vlib_buffer_t.
There are two main reasons behind this refactoring.
First, offload flags are insufficient to represent outer
and inner headers offloads. Second, room for these flags
in first cacheline of vlib_buffer_t is also limited.
This patch introduces a generic offload flag in first
cacheline. And detailed offload flags in 2nd cacheline
of the structure for performance optimization.
Change-Id: Icc363a142fb9208ec7113ab5bbfc8230181f6004
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/plugins/dpdk')
| -rw-r--r-- | src/plugins/dpdk/device/device.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/src/plugins/dpdk/device/device.c b/src/plugins/dpdk/device/device.c index ec33f6a4461..6466b443633 100644 --- a/src/plugins/dpdk/device/device.c +++ b/src/plugins/dpdk/device/device.c @@ -218,17 +218,20 @@ static_always_inline void dpdk_buffer_tx_offload (dpdk_device_t * xd, vlib_buffer_t * b, struct rte_mbuf *mb) { - u32 ip_cksum = b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM; - u32 tcp_cksum = b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; - u32 udp_cksum = b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; int is_ip4 = b->flags & VNET_BUFFER_F_IS_IP4; u32 tso = b->flags & VNET_BUFFER_F_GSO, max_pkt_len; + u32 oflags, ip_cksum, tcp_cksum, udp_cksum; u64 ol_flags; /* Is there any work for us? */ - if (PREDICT_TRUE ((ip_cksum | tcp_cksum | udp_cksum | tso) == 0)) + if (PREDICT_TRUE (((b->flags & VNET_BUFFER_F_OFFLOAD) | tso) == 0)) return; + oflags = vnet_buffer2 (b)->oflags; + ip_cksum = oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM; + tcp_cksum = oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM; + udp_cksum = oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM; + mb->l2_len = vnet_buffer (b)->l3_hdr_offset - b->current_data; mb->l3_len = vnet_buffer (b)->l4_hdr_offset - vnet_buffer (b)->l3_hdr_offset; @@ -328,10 +331,7 @@ VNET_DEVICE_CLASS_TX_FN (dpdk_device_class) (vlib_main_t * vm, } if (PREDICT_FALSE ((xd->flags & DPDK_DEVICE_FLAG_TX_OFFLOAD) && - (or_flags & - (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM - | VNET_BUFFER_F_OFFLOAD_IP_CKSUM - | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)))) + (or_flags & VNET_BUFFER_F_OFFLOAD))) { dpdk_buffer_tx_offload (xd, b[0], mb[0]); dpdk_buffer_tx_offload (xd, b[1], mb[1]); @@ -388,10 +388,7 @@ VNET_DEVICE_CLASS_TX_FN (dpdk_device_class) (vlib_main_t * vm, } if (PREDICT_FALSE ((xd->flags & DPDK_DEVICE_FLAG_TX_OFFLOAD) && - (or_flags & - (VNET_BUFFER_F_OFFLOAD_TCP_CKSUM - | VNET_BUFFER_F_OFFLOAD_IP_CKSUM - | VNET_BUFFER_F_OFFLOAD_UDP_CKSUM)))) + (or_flags & VNET_BUFFER_F_OFFLOAD))) { dpdk_buffer_tx_offload (xd, b[0], mb[0]); dpdk_buffer_tx_offload (xd, b[1], mb[1]); |