diff options
| author |   Filip Varga <fivarga@cisco.com> | 2021-02-17 14:34:54 +0100 |
|---|---|---|
| committer |   Ole Tr�an <otroan@employees.org> | 2021-02-24 19:25:25 +0000 |
| commit | 0eaf4e6784efb2d058fe2f031578251b6bcc0aa8 (patch) | |
| tree | cc0c2b485bfee51068fa4970acc9f95ec595e8e5 /src/plugins/nat/lib/lib.h | |
| parent | 5db2f4a4312112ab57043ce88f10edc4acc141ec (diff) | |
nat: Final NAT44 EI/ED split patch
This patch achieves complete separation of
endpoint-dependent and endpoint-independent IPv4 NAT
features. Some common stuff is also moved to NAT
library.
Type: refactor
Change-Id: I52468b7e2b5ac28958a2baf8e2ea01787322e801
Signed-off-by: Filip Varga <fivarga@cisco.com>
Diffstat (limited to 'src/plugins/nat/lib/lib.h')
| -rw-r--r-- | src/plugins/nat/lib/lib.h | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/src/plugins/nat/lib/lib.h b/src/plugins/nat/lib/lib.h index 04bad5c74f7..b0b5229b337 100644 --- a/src/plugins/nat/lib/lib.h +++ b/src/plugins/nat/lib/lib.h @@ -95,7 +95,52 @@ nat_reset_timeouts (nat_timeouts_t * timeouts) timeouts->icmp = NAT_ICMP_TIMEOUT; } -// TODO: move common formating definitions here +static_always_inline u32 +nat_session_get_timeout (nat_timeouts_t *timeouts, nat_protocol_t proto, + u8 state) +{ + switch (proto) + { + case NAT_PROTOCOL_ICMP: + return timeouts->icmp; + case NAT_PROTOCOL_UDP: + return timeouts->udp; + case NAT_PROTOCOL_TCP: + { + if (state) + return timeouts->tcp.transitory; + else + return timeouts->tcp.established; + } + default: + return timeouts->udp; + } + return 0; +} + +static_always_inline u32 +nat_calc_bihash_buckets (u32 n_elts) +{ + n_elts = n_elts / 2.5; + u64 lower_pow2 = 1; + while (lower_pow2 * 2 < n_elts) + { + lower_pow2 = 2 * lower_pow2; + } + u64 upper_pow2 = 2 * lower_pow2; + if ((upper_pow2 - n_elts) < (n_elts - lower_pow2)) + { + if (upper_pow2 <= UINT32_MAX) + { + return upper_pow2; + } + } + return lower_pow2; +} + +u8 *format_nat_protocol (u8 *s, va_list *args); + +uword unformat_nat_protocol (unformat_input_t *input, va_list *args); #endif /* included_nat_lib_h__ */ /* |