diff options
| author |   Dave Barach <dave@barachs.net> | 2018-06-14 18:05:30 -0400 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2018-06-19 18:47:11 +0000 |
| commit | c6215d902f02d08a59567f3f788caa0e03508c0d (patch) | |
| tree | 5c5fa6fe1616446385ed4292c6912ef76f82b3da /src/vnet/ip/ip_packet.h | |
| parent | 3337bd22002e9b78459082c34f7b78370b177eb0 (diff) | |
ip checksum multiarch support, cleanup
When computing tcp/udp checksums across large amounts of data -
e.g. when NIC h/w checksum offload is not available - it's worth
providing arch-dependent code; if only to compile the code w/ -O3.
Fix calculation when data is fully unaligned / on an odd byte
boundary.
Add a buffer alignment test vector.
Change-Id: I7644e2276ac6cbc3f575bf61746a6ffedbbb6150
Signed-off-by: Dave Barach <dave@barachs.net>
Diffstat (limited to 'src/vnet/ip/ip_packet.h')
| -rw-r--r-- | src/vnet/ip/ip_packet.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/vnet/ip/ip_packet.h b/src/vnet/ip/ip_packet.h index d3f3de771bc..3c532f10ffe 100644 --- a/src/vnet/ip/ip_packet.h +++ b/src/vnet/ip/ip_packet.h @@ -156,9 +156,13 @@ ip_csum_fold (ip_csum_t c) return c; } -/* Copy data and checksum at the same time. */ -ip_csum_t ip_csum_and_memcpy (ip_csum_t sum, void *dst, void *src, - uword n_bytes); +extern ip_csum_t (*vnet_incremental_checksum_fp) (ip_csum_t, void *, uword); + +always_inline ip_csum_t +ip_incremental_checksum (ip_csum_t sum, void *_data, uword n_bytes) +{ + return (*vnet_incremental_checksum_fp) (sum, _data, n_bytes); +} always_inline u16 ip_csum_and_memcpy_fold (ip_csum_t sum, void *dst) |