diff options
Diffstat (limited to 'lib/libtle_udp/misc.h')
| -rw-r--r-- | lib/libtle_udp/misc.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/libtle_udp/misc.h b/lib/libtle_udp/misc.h index 3874647..359f400 100644 --- a/lib/libtle_udp/misc.h +++ b/lib/libtle_udp/misc.h @@ -45,6 +45,21 @@ _mbuf_tx_offload(uint64_t il2, uint64_t il3, uint64_t il4, uint64_t tso, } /* + * Given the value of mbuf's tx_offload, calculate L4 payload offset. + */ +static inline uint32_t +_tx_offload_l4_offset(uint64_t ofl) +{ + uint32_t l2, l3, l4; + + l2 = ofl & 0x7f; + l3 = ofl >> 7 & 0x1ff; + l4 = ofl >> 16 & UINT8_MAX; + + return l2 + l3 + l4; +} + +/* * Routines to calculate L3/L4 checksums in SW. * Pretty similar to ones from DPDK librte_net/rte_ip.h, * but provide better performance (at least for tested configurations), |