diff options
Diffstat (limited to 'src/kernel/net.c')
| -rw-r--r-- | src/kernel/net.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/kernel/net.c b/src/kernel/net.c index 5ef4016..54accb6 100644 --- a/src/kernel/net.c +++ b/src/kernel/net.c @@ -143,6 +143,7 @@ static void dnbd3_start_discover(dnbd3_device_t *dev, bool panic) // Panic freshly turned on dev->panic = true; dev->discover_interval = TIMER_INTERVAL_PROBE_PANIC; + dev->discover_count = 0; } spin_unlock_irqrestore(&dev->blk_lock, irqflags); dnbd3_flag_reset(dev->connection_lock); @@ -219,6 +220,10 @@ static void dnbd3_internal_discover(dnbd3_device_t *dev) best_server.ss_family = 0; best_rtt = RTT_UNREACHABLE; + if (dev->panic) { + dnbd3_dev_dbg_host(dev, &host_compare, "Discover in panic mode\n"); + } + if (!ready || dev->panic) isize = NUMBER_SERVERS; else @@ -446,7 +451,9 @@ static void dnbd3_recv_workfn(struct work_struct *work) int remaining; int ret; + dnbd3_dev_dbg_cur(dev, "starting receive worker...\n"); mutex_lock(&dev->recv_mutex); + dnbd3_dev_dbg_cur(dev, "receive worker started\n"); while (dev->sock) { // receive net reply ret = dnbd3_recv_reply(dev->sock, &reply_hdr); @@ -594,6 +601,7 @@ static void dnbd3_recv_workfn(struct work_struct *work) out_unlock: // This will check if we actually still need a new connection dnbd3_start_discover(dev, true); + dnbd3_dev_dbg_cur(dev, "Receive worker exited\n"); mutex_unlock(&dev->recv_mutex); } @@ -623,7 +631,7 @@ static void set_socket_timeout(struct socket *sock, bool set_send, int timeout_m static int dnbd3_connect(dnbd3_device_t *dev, struct sockaddr_storage *addr, struct socket **sock_out) { ktime_t start; - int ret, connect_time_ms; + int ret, connect_time_ms, diff; struct socket *sock; int retries = 4; const int addrlen = addr->ss_family == AF_INET ? sizeof(struct sockaddr_in) @@ -659,7 +667,7 @@ static int dnbd3_connect(dnbd3_device_t *dev, struct sockaddr_storage *addr, str if (dev->panic && dev->panic_count > 1) { /* in panic mode for some time, start increasing timeouts */ - connect_time_ms = dev->panic_count * 1000; + connect_time_ms = dev->panic_count * 333; } else { /* otherwise, use 2*RTT of current server */ connect_time_ms = dev->cur_server.rtt * 2 / 1000; @@ -667,21 +675,21 @@ static int dnbd3_connect(dnbd3_device_t *dev, struct sockaddr_storage *addr, str /* but obey a minimal configurable value, and maximum sanity check */ if (connect_time_ms < SOCKET_TIMEOUT_SEND * 1000) connect_time_ms = SOCKET_TIMEOUT_SEND * 1000; - else if (connect_time_ms > 60000) - connect_time_ms = 60000; + else if (connect_time_ms > 15000) + connect_time_ms = 15000; set_socket_timeout(sock, false, connect_time_ms); // recv set_socket_timeout(sock, true, connect_time_ms); // send start = ktime_get_real(); while (--retries > 0) { ret = kernel_connect(sock, (struct sockaddr *)addr, addrlen, 0); - connect_time_ms = (int)ktime_ms_delta(ktime_get_real(), start); - if (connect_time_ms > 2 * SOCKET_TIMEOUT_SEND * 1000) { + diff = (int)ktime_ms_delta(ktime_get_real(), start); + if (diff > 2 * connect_time_ms) { /* Either I'm losing my mind or there was a specific build of kernel * 5.x where SO_RCVTIMEO didn't affect the connect call above, so * this function would hang for over a minute for unreachable hosts. - * Leave in this debug check for twice the configured timeout + * Leave in this debug check for twice the configured timeout. */ - dnbd3_dev_dbg_host(dev, addr, "connect: call took %dms\n", + dnbd3_dev_err_host(dev, addr, "connect: call took %dms\n", connect_time_ms); } if (ret != 0) { |