diff options
| author |   Matus Fabian <matfabia@cisco.com> | 2018-11-21 04:53:10 -0800 |
|---|---|---|
| committer |   Ole Trøan <otroan@employees.org> | 2018-11-22 06:29:52 +0000 |
| commit | 15e8e681813a2e88dad107b5fe238bc8abee17d2 (patch) | |
| tree | edaf84a440429fdaeb84c531a9d447339b87787c /src/plugins | |
| parent | fdd19c46655f6dc3ab4bc6773c681e423d2f0152 (diff) | |
NAT44: Apply transitory timeout on TCP RST (VPP-1494)
RFC7857 section 2.2.
Change-Id: I031af5fe379b72262e83fd8565c34fa1b772f2c8
Signed-off-by: Matus Fabian <matfabia@cisco.com>
Diffstat (limited to 'src/plugins')
| -rw-r--r-- | src/plugins/nat/nat.h | 1 | ||||
| -rw-r--r-- | src/plugins/nat/nat_inlines.h | 8 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h index 02d4aaef9f6..3162e41b696 100644 --- a/src/plugins/nat/nat.h +++ b/src/plugins/nat/nat.h @@ -165,6 +165,7 @@ typedef enum #define NAT44_SES_O2I_FIN_ACK 8 #define NAT44_SES_I2O_SYN 16 #define NAT44_SES_O2I_SYN 32 +#define NAT44_SES_RST 64 /* Session flags */ #define SNAT_SESSION_FLAG_STATIC_MAPPING 1 diff --git a/src/plugins/nat/nat_inlines.h b/src/plugins/nat/nat_inlines.h index 0b4f8108c7e..38cfc379245 100644 --- a/src/plugins/nat/nat_inlines.h +++ b/src/plugins/nat/nat_inlines.h @@ -200,6 +200,10 @@ always_inline int nat44_set_tcp_session_state_i2o (snat_main_t * sm, snat_session_t * ses, tcp_header_t * tcp, u32 thread_index) { + if ((ses->state == 0) && (tcp->flags & TCP_FLAG_RST)) + ses->state = NAT44_SES_RST; + if ((ses->state == NAT44_SES_RST) && !(tcp->flags & TCP_FLAG_RST)) + ses->state = 0; if ((tcp->flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) && (ses->state & NAT44_SES_O2I_SYN)) ses->state = 0; @@ -231,6 +235,10 @@ always_inline int nat44_set_tcp_session_state_o2i (snat_main_t * sm, snat_session_t * ses, tcp_header_t * tcp, u32 thread_index) { + if ((ses->state == 0) && (tcp->flags & TCP_FLAG_RST)) + ses->state = NAT44_SES_RST; + if ((ses->state == NAT44_SES_RST) && !(tcp->flags & TCP_FLAG_RST)) + ses->state = 0; if ((tcp->flags & TCP_FLAG_ACK) && (ses->state & NAT44_SES_I2O_SYN) && (ses->state & NAT44_SES_O2I_SYN)) ses->state = 0; |