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/vnet/interface_output.h | |
| 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/vnet/interface_output.h')
| -rw-r--r-- | src/vnet/interface_output.h | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/src/vnet/interface_output.h b/src/vnet/interface_output.h index 4b082b314ad..27aadc6c5fd 100644 --- a/src/vnet/interface_output.h +++ b/src/vnet/interface_output.h @@ -44,18 +44,17 @@ #include <vnet/gso/hdr_offset_parser.h> static_always_inline void -vnet_calc_ip4_checksums (vlib_main_t * vm, vlib_buffer_t * b, - ip4_header_t * ip4, tcp_header_t * th, - udp_header_t * uh) +vnet_calc_ip4_checksums (vlib_main_t *vm, vlib_buffer_t *b, ip4_header_t *ip4, + tcp_header_t *th, udp_header_t *uh, u32 oflags) { - if (b->flags & VNET_BUFFER_F_OFFLOAD_IP_CKSUM) + if (oflags & VNET_BUFFER_OFFLOAD_F_IP_CKSUM) ip4->checksum = ip4_header_checksum (ip4); - if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM) { th->checksum = 0; th->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); } - if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM) { uh->checksum = 0; uh->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip4); @@ -63,17 +62,16 @@ vnet_calc_ip4_checksums (vlib_main_t * vm, vlib_buffer_t * b, } static_always_inline void -vnet_calc_ip6_checksums (vlib_main_t * vm, vlib_buffer_t * b, - ip6_header_t * ip6, tcp_header_t * th, - udp_header_t * uh) +vnet_calc_ip6_checksums (vlib_main_t *vm, vlib_buffer_t *b, ip6_header_t *ip6, + tcp_header_t *th, udp_header_t *uh, u32 oflags) { int bogus; - if (b->flags & VNET_BUFFER_F_OFFLOAD_TCP_CKSUM) + if (oflags & VNET_BUFFER_OFFLOAD_F_TCP_CKSUM) { th->checksum = 0; th->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); } - if (b->flags & VNET_BUFFER_F_OFFLOAD_UDP_CKSUM) + if (oflags & VNET_BUFFER_OFFLOAD_F_UDP_CKSUM) { uh->checksum = 0; uh->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b, ip6, &bogus); @@ -88,6 +86,7 @@ vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b, ip6_header_t *ip6; tcp_header_t *th; udp_header_t *uh; + u32 oflags = vnet_buffer2 (b)->oflags; ASSERT (!(is_ip4 && is_ip6)); @@ -98,16 +97,16 @@ vnet_calc_checksums_inline (vlib_main_t * vm, vlib_buffer_t * b, if (is_ip4) { - vnet_calc_ip4_checksums (vm, b, ip4, th, uh); + vnet_calc_ip4_checksums (vm, b, ip4, th, uh, oflags); } else if (is_ip6) { - vnet_calc_ip6_checksums (vm, b, ip6, th, uh); + vnet_calc_ip6_checksums (vm, b, ip6, th, uh, oflags); } - b->flags &= ~VNET_BUFFER_F_OFFLOAD_TCP_CKSUM; - b->flags &= ~VNET_BUFFER_F_OFFLOAD_UDP_CKSUM; - b->flags &= ~VNET_BUFFER_F_OFFLOAD_IP_CKSUM; + vnet_buffer_offload_flags_clear (b, (VNET_BUFFER_OFFLOAD_F_IP_CKSUM | + VNET_BUFFER_OFFLOAD_F_UDP_CKSUM | + VNET_BUFFER_OFFLOAD_F_TCP_CKSUM)); } #endif |