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Update of configuration flag: --handle-rst-during-fin-rcv #364

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Merged
merged 1 commit into from
Aug 27, 2021
Merged

Update of configuration flag: --handle-rst-during-fin-rcv #364

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40 changes: 18 additions & 22 deletions src/mod/common/steps/filtering_and_updating.c
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Original file line number Diff line number Diff line change
Expand Up @@ -348,18 +348,16 @@ static enum session_fate tcp_v4_fin_rcv_state(struct session_entry *session,
struct xlation *state)
{
struct packet *pkt = &state->in;
struct tcphdr *hdr;
struct tcphdr *hdr = pkt_tcp_hdr(pkt);

if (pkt_l3_proto(pkt) == L3PROTO_IPV6) {
hdr = pkt_tcp_hdr(pkt);
if (hdr->fin) {
session->state = V4_FIN_V6_FIN_RCV;
return FATE_TIMER_TRANS;
}
if (hdr->rst && handle_rst_during_fin_rcv(state)) {
/* https://github.com/NICMx/Jool/issues/212 */
return FATE_TIMER_TRANS;
}
if (pkt_l3_proto(pkt) == L3PROTO_IPV6 && hdr->fin) {
session->state = V4_FIN_V6_FIN_RCV;
return FATE_TIMER_TRANS;
}

if (hdr->rst && handle_rst_during_fin_rcv(state)) {
/* https://github.com/NICMx/Jool/issues/212 */
return FATE_TIMER_TRANS;
}

return FATE_TIMER_EST;
Expand All @@ -373,18 +371,16 @@ static enum session_fate tcp_v6_fin_rcv_state(struct session_entry *session,
struct xlation *state)
{
struct packet *pkt = &state->in;
struct tcphdr *hdr;
struct tcphdr *hdr = pkt_tcp_hdr(pkt);

if (pkt_l3_proto(pkt) == L3PROTO_IPV4) {
hdr = pkt_tcp_hdr(pkt);
if (hdr->fin) {
session->state = V4_FIN_V6_FIN_RCV;
return FATE_TIMER_TRANS;
}
if (hdr->rst && handle_rst_during_fin_rcv(state)) {
/* https://github.com/NICMx/Jool/issues/212 */
return FATE_TIMER_TRANS;
}
if (pkt_l3_proto(pkt) == L3PROTO_IPV4 && hdr->fin) {
session->state = V4_FIN_V6_FIN_RCV;
return FATE_TIMER_TRANS;
}

if (hdr->rst && handle_rst_during_fin_rcv(state)) {
/* https://github.com/NICMx/Jool/issues/212 */
return FATE_TIMER_TRANS;
}

return FATE_TIMER_EST;
Expand Down