From f5d642a06f9c1a58197313b32f6b213a152e446f Mon Sep 17 00:00:00 2001
From: Dimitri Staessens <dimitri@ouroboros.rocks>
Date: Fri, 25 Feb 2022 17:34:29 +0100
Subject: lib: Make flow liveness timeout configurable

The qosspec_t now has a timeout value that sets the timeout value of
the flow. Flows with a peer that has timed out will now return
-EFLOWPEER on flow_read() or flow_write().

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
---
 src/ipcpd/eth/eth.c    | 3 +++
 src/ipcpd/udp/main.c   | 4 ++++
 src/ipcpd/unicast/fa.c | 7 +++++--
 3 files changed, 12 insertions(+), 2 deletions(-)

(limited to 'src/ipcpd')

diff --git a/src/ipcpd/eth/eth.c b/src/ipcpd/eth/eth.c
index e22dd7bc..8b34d303 100644
--- a/src/ipcpd/eth/eth.c
+++ b/src/ipcpd/eth/eth.c
@@ -164,6 +164,7 @@ struct mgmt_msg {
         uint32_t ber;
         uint32_t max_gap;
         uint32_t delay;
+        uint32_t timeout;
         uint16_t cypher_s;
         uint8_t  in_order;
 #if defined (BUILD_ETH_DIX)
@@ -492,6 +493,7 @@ static int eth_ipcp_alloc(const uint8_t * dst_addr,
         msg->in_order     = qs.in_order;
         msg->max_gap      = hton32(qs.max_gap);
         msg->cypher_s     = hton16(qs.cypher_s);
+        msg->timeout      = hton32(qs.timeout);
 
         memcpy(msg + 1, hash, ipcp_dir_hash_len());
         memcpy(buf + len + ETH_HEADER_TOT_SIZE, data, dlen);
@@ -753,6 +755,7 @@ static int eth_ipcp_mgmt_frame(const uint8_t * buf,
                 qs.in_order = msg->in_order;
                 qs.max_gap = ntoh32(msg->max_gap);
                 qs.cypher_s = ntoh16(msg->cypher_s);
+                qs.timeout = ntoh32(msg->timeout);
 
                 if (shim_data_reg_has(eth_data.shim_data,
                                       buf + sizeof(*msg))) {
diff --git a/src/ipcpd/udp/main.c b/src/ipcpd/udp/main.c
index b9f97e74..5c57e6b8 100644
--- a/src/ipcpd/udp/main.c
+++ b/src/ipcpd/udp/main.c
@@ -98,7 +98,9 @@ struct mgmt_msg {
         uint32_t loss;
         uint32_t ber;
         uint32_t max_gap;
+        uint32_t timeout;
         uint16_t cypher_s;
+
 } __attribute__((packed));
 
 struct mgmt_frame {
@@ -217,6 +219,7 @@ static int ipcp_udp_port_alloc(const struct sockaddr_in * r_saddr,
         msg->in_order     = qs.in_order;
         msg->max_gap      = hton32(qs.max_gap);
         msg->cypher_s     = hton16(qs.cypher_s);
+        msg->timeout      = hton32(qs.timeout);
 
         memcpy(msg + 1, dst, ipcp_dir_hash_len());
         memcpy(buf + len, data, dlen);
@@ -375,6 +378,7 @@ static int ipcp_udp_mgmt_frame(const uint8_t *    buf,
                 qs.in_order     = msg->in_order;
                 qs.max_gap      = ntoh32(msg->max_gap);
                 qs.cypher_s     = ntoh16(msg->cypher_s);
+                qs.timeout      = ntoh32(msg->timeout);
 
                 return ipcp_udp_port_req(&c_saddr, ntoh32(msg->s_eid),
                                          (uint8_t *) (msg + 1), qs,
diff --git a/src/ipcpd/unicast/fa.c b/src/ipcpd/unicast/fa.c
index dcc79031..d59b9760 100644
--- a/src/ipcpd/unicast/fa.c
+++ b/src/ipcpd/unicast/fa.c
@@ -72,14 +72,15 @@ struct fa_msg {
         int8_t   response;
         uint16_t ece;
         /* QoS parameters from spec, aligned */
-        uint8_t  availability;
-        uint8_t  in_order;
         uint32_t delay;
         uint64_t bandwidth;
         uint32_t loss;
         uint32_t ber;
         uint32_t max_gap;
+        uint32_t timeout;
         uint16_t cypher_s;
+        uint8_t  availability;
+        uint8_t  in_order;
 } __attribute__((packed));
 
 struct cmd {
@@ -569,6 +570,7 @@ static int fa_handle_flow_req(struct fa_msg * msg,
         qs.in_order     = msg->in_order;
         qs.max_gap      = ntoh32(msg->max_gap);
         qs.cypher_s     = ntoh16(msg->cypher_s);
+        qs.timeout      = ntoh32(msg->timeout);
 
         fd = fa_wait_irmd_alloc((uint8_t *) (msg + 1), qs, data, dlen);
         if (fd < 0)
@@ -840,6 +842,7 @@ int fa_alloc(int             fd,
         msg->in_order     = qs.in_order;
         msg->max_gap      = hton32(qs.max_gap);
         msg->cypher_s     = hton16(qs.cypher_s);
+        msg->timeout      = hton32(qs.timeout);
 
         memcpy(msg + 1, dst, ipcp_dir_hash_len());
         memcpy(shm_du_buff_head(sdb) + len, data, dlen);
-- 
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