Always on the go? Then you’re sure to appreciate our Travel Center option, designed to keep everything handy and make packing a snap!

You know where your suitcase has been…so you’re probably not going to want to pack it on the clean bedspread! Our travel center was inspired by customers who wanted storage plus convenience when it came to preparing to leave town.

Zirkel Gables – #35092FB

“I know where that suitcase has been, and it’s not getting packed on my clean bedspread!”

“I live for spontaneous travel. I need a place to keep overnight essentials.”

“Finding a place to store the suitcase is a pain.”

The Travel Center addresses all of these issues and more. Situated in the owner’s suite walk-in closet, packing the suitcase couldn’t be easier as everything you need is conveniently within reach. You don’t have to run up or down stairs to fetch the suitcase, and it’s stored where it doesn’t need to be constantly moved out of the way.

View more plans with a Travel Center already designed; or, talk with a plan specialist about adding one to a different plan: 800.947.7526

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delete | rename ] [FILE] zfsslower-bpfcc [ edit | delete | rename ] [FILE] zic [ edit | delete | rename ] [FILE] zramctl [ edit | delete | rename ] Viewing: /usr/sbin/tcpcong-bpfcc #! /usr/bin/python3 # @lint-avoid-python-3-compatibility-imports # # tcpcong Measure tcp congestion control status duration. # For Linux, uses BCC, eBPF. # # USAGE: tcpcong [-h] [-T] [-L] [-R] [-m] [-d] [interval] [outputs] # # Copyright (c) Ping Gan. # # 27-Jan-2022 Ping Gan Created this. from __future__ import print_function from bcc import BPF from time import sleep, strftime from struct import pack from socket import inet_ntop, AF_INET, AF_INET6 from struct import pack import argparse examples = """examples: ./tcpcong # show tcp congestion status duration ./tcpcong 1 10 # show 1 second summaries, 10 times ./tcpcong -L 3000-3006 1 # 1s summaries, local port 3000-3006 ./tcpcong -R 5000-5005 1 # 1s summaries, remote port 5000-5005 ./tcpcong -uT 1 # 1s summaries, microseconds, and timestamps ./tcpcong -d # show the duration as histograms """ parser = argparse.ArgumentParser( description="Summarize tcp socket congestion control status duration", formatter_class=argparse.RawDescriptionHelpFormatter, epilog=examples) parser.add_argument("-L", "--localport", help="trace local ports only") parser.add_argument("-R", "--remoteport", help="trace the dest ports only") parser.add_argument("-T", "--timestamp", action="store_true", help="include timestamp on output") parser.add_argument("-d", "--dist", action="store_true", help="show distributions as histograms") parser.add_argument("-u", "--microseconds", action="store_true", help="output in microseconds") parser.add_argument("interval", nargs="?", default=99999999, help="output interval, in seconds") parser.add_argument("outputs", nargs="?", default=99999999, help="number of outputs") parser.add_argument("--ebpf", action="store_true", help=argparse.SUPPRESS) args = parser.parse_args() countdown = int(args.outputs) debug = 0 start_rport = end_rport = -1 if args.remoteport: rports = args.remoteport.split("-") if (len(rports) != 2) and (len(rports) != 1): print("unrecognized remote port range") exit(1) if len(rports) == 2: start_rport = int(rports[0]) end_rport = int(rports[1]) else: start_rport = int(rports[0]) end_rport = int(rports[0]) if start_rport > end_rport: tmp = start_rport start_rport = end_rport end_rport = tmp start_lport = end_lport = -1 if args.localport: lports = args.localport.split("-") if (len(lports) != 2) and (len(lports) != 1): print("unrecognized local port range") exit(1) if len(lports) == 2: start_lport = int(lports[0]) end_lport = int(lports[1]) else: start_lport = int(lports[0]) end_lport = int(lports[0]) if start_lport > end_lport: tmp = start_lport start_lport = end_lport end_lport = tmp # define BPF program bpf_head_text = """ #include <uapi/linux/ptrace.h> #include <net/sock.h> #include <bcc/proto.h> #include <net/tcp.h> #include <net/inet_connection_sock.h> typedef struct ipv4_flow_key { u32 saddr; u32 daddr; u16 lport; u16 dport; } ipv4_flow_key_t; typedef struct ipv6_flow_key { unsigned __int128 saddr; unsigned __int128 daddr; u16 lport; u16 dport; } ipv6_flow_key_t; typedef struct data_val { DEF_TEXT u64 last_ts; u16 last_cong_stat; } data_val_t; BPF_HASH(ipv4_stat, ipv4_flow_key_t, data_val_t); BPF_HASH(ipv6_stat, ipv6_flow_key_t, data_val_t); HIST_TABLE """ bpf_extra_head = """ typedef struct process_key { char comm[TASK_COMM_LEN]; u32 tid; } process_key_t; typedef struct ipv4_flow_val { ipv4_flow_key_t ipv4_key; u16 cong_state; } ipv4_flow_val_t; typedef struct ipv6_flow_val { ipv6_flow_key_t ipv6_key; u16 cong_state; } ipv6_flow_val_t; BPF_HASH(start_ipv4, process_key_t, ipv4_flow_val_t); BPF_HASH(start_ipv6, process_key_t, ipv6_flow_val_t); SOCK_STORE_DEF typedef struct cong { u8 cong_stat:5, ca_inited:1, ca_setsockopt:1, ca_dstlocked:1; } cong_status_t; """ bpf_no_ca_tp_body_text = """ static int entry_state_update_func(struct sock *sk) { u16 dport = 0, lport = 0; u32 tid = bpf_get_current_pid_tgid(); process_key_t key = {0}; bpf_get_current_comm(&key.comm, sizeof(key.comm)); key.tid = tid; u64 family = sk->__sk_common.skc_family; struct inet_connection_sock *icsk = inet_csk(sk); cong_status_t cong_status; bpf_probe_read_kernel(&cong_status, sizeof(cong_status), (void *)((long)&icsk->icsk_retransmits) - 1); if (family == AF_INET) { ipv4_flow_val_t ipv4_val = {0}; ipv4_val.ipv4_key.saddr = sk->__sk_common.skc_rcv_saddr; ipv4_val.ipv4_key.daddr = sk->__sk_common.skc_daddr; ipv4_val.ipv4_key.lport = sk->__sk_common.skc_num; dport = sk->__sk_common.skc_dport; dport = ntohs(dport); lport = ipv4_val.ipv4_key.lport; FILTER_LPORT FILTER_DPORT ipv4_val.ipv4_key.dport = dport; ipv4_val.cong_state = cong_status.cong_stat + 1; start_ipv4.update(&key, &ipv4_val); } else if (family == AF_INET6) { ipv6_flow_val_t ipv6_val = {0}; bpf_probe_read_kernel(&ipv6_val.ipv6_key.saddr, sizeof(ipv6_val.ipv6_key.saddr), &sk->__sk_common.skc_v6_rcv_saddr.in6_u.u6_addr32); bpf_probe_read_kernel(&ipv6_val.ipv6_key.daddr, sizeof(ipv6_val.ipv6_key.daddr), &sk->__sk_common.skc_v6_daddr.in6_u.u6_addr32); ipv6_val.ipv6_key.lport = sk->__sk_common.skc_num; dport = sk->__sk_common.skc_dport; dport = ntohs(dport); lport = ipv6_val.ipv6_key.lport; FILTER_LPORT FILTER_DPORT ipv6_val.ipv6_key.dport = dport; ipv6_val.cong_state = cong_status.cong_stat + 1; start_ipv6.update(&key, &ipv6_val); } SOCK_STORE_ADD return 0; } static int ret_state_update_func(struct sock *sk) { u64 ts, ts1; u16 family, last_cong_state; u16 dport = 0, lport = 0; u32 tid = bpf_get_current_pid_tgid(); process_key_t key = {0}; bpf_get_current_comm(&key.comm, sizeof(key.comm)); key.tid = tid; struct inet_connection_sock *icsk = inet_csk(sk); cong_status_t cong_status; bpf_probe_read_kernel(&cong_status, sizeof(cong_status), (void *)((long)&icsk->icsk_retransmits) - 1); data_val_t *datap, data = {0}; STATE_KEY bpf_probe_read_kernel(&family, sizeof(family), &sk->__sk_common.skc_family); if (family == AF_INET) { ipv4_flow_val_t *val4 = start_ipv4.lookup(&key); if (val4 == 0) { SOCK_STORE_DEL return 0; //missed } ipv4_flow_key_t keyv4 = {0}; bpf_probe_read_kernel(&keyv4, sizeof(ipv4_flow_key_t), &(val4->ipv4_key)); dport = keyv4.dport; lport = keyv4.lport; FILTER_LPORT FILTER_DPORT datap = ipv4_stat.lookup(&keyv4); if (datap == 0) { data.last_ts = bpf_ktime_get_ns(); data.last_cong_stat = val4->cong_state; ipv4_stat.update(&keyv4, &data); } else { last_cong_state = val4->cong_state; if ((cong_status.cong_stat + 1) != last_cong_state) { ts1 = bpf_ktime_get_ns(); ts = ts1 - datap->last_ts; datap->last_ts = ts1; datap->last_cong_stat = cong_status.cong_stat + 1; ts /= 1000; STORE } } start_ipv4.delete(&key); } else if (family == AF_INET6) { ipv6_flow_val_t *val6 = start_ipv6.lookup(&key); if (val6 == 0) { SOCK_STORE_DEL return 0; //missed } ipv6_flow_key_t keyv6 = {0}; bpf_probe_read_kernel(&keyv6, sizeof(ipv6_flow_key_t), &(val6->ipv6_key)); dport = keyv6.dport; lport = keyv6.lport; FILTER_LPORT FILTER_DPORT datap = ipv6_stat.lookup(&keyv6); if (datap == 0) { data.last_ts = bpf_ktime_get_ns(); data.last_cong_stat = val6->cong_state; ipv6_stat.update(&keyv6, &data); } else { last_cong_state = val6->cong_state; if ((cong_status.cong_stat + 1) != last_cong_state) { ts1 = bpf_ktime_get_ns(); ts = ts1 - datap->last_ts; datap->last_ts = ts1; datap->last_cong_stat = (cong_status.cong_stat + 1); ts /= 1000; STORE } } start_ipv6.delete(&key); } SOCK_STORE_DEL return 0; } """ bpf_ca_tp_body_text = """ TRACEPOINT_PROBE(tcp, tcp_cong_state_set) { u64 ts, ts1; u16 family, last_cong_state, dport = 0, lport = 0; u8 cong_state; const struct sock *sk = (const struct sock *)args->skaddr; data_val_t *datap, data = {0}; family = sk->__sk_common.skc_family; dport = args->dport; lport = args->sport; cong_state = args->cong_state; STATE_KEY if (family == AF_INET) { ipv4_flow_key_t key4 = {0}; key4.saddr = sk->__sk_common.skc_rcv_saddr; key4.daddr = sk->__sk_common.skc_daddr; FILTER_LPORT FILTER_DPORT key4.lport = lport; key4.dport = dport; datap = ipv4_stat.lookup(&key4); if (datap == 0) { data.last_ts = bpf_ktime_get_ns(); data.last_cong_stat = cong_state + 1; ipv4_stat.update(&key4, &data); } else { last_cong_state = datap->last_cong_stat; if ((cong_state + 1) != last_cong_state) { ts1 = bpf_ktime_get_ns(); ts = ts1 - datap->last_ts; datap->last_ts = ts1; datap->last_cong_stat = cong_state + 1; ts /= 1000; STORE } } } else if (family == AF_INET6) { ipv6_flow_key_t key6 = {0}; bpf_probe_read_kernel(&key6.saddr, sizeof(key6.saddr), &sk->__sk_common.skc_v6_rcv_saddr.in6_u.u6_addr32); bpf_probe_read_kernel(&key6.daddr, sizeof(key6.daddr), &sk->__sk_common.skc_v6_daddr.in6_u.u6_addr32); FILTER_LPORT FILTER_DPORT key6.lport = lport; key6.dport = dport; datap = ipv6_stat.lookup(&key6); if (datap == 0) { data.last_ts = bpf_ktime_get_ns(); data.last_cong_stat = cong_state + 1; ipv6_stat.update(&key6, &data); } else { last_cong_state = datap->last_cong_stat; if ((cong_state + 1) != last_cong_state) { ts1 = bpf_ktime_get_ns(); ts = ts1 - datap->last_ts; datap->last_ts = ts1; datap->last_cong_stat = cong_state + 1; ts /= 1000; STORE } } } return 0; } """ kprobe_program = """ int entry_func(struct pt_regs *ctx, struct sock *sk) { return entry_state_update_func(sk); } int ret_func(struct pt_regs *ctx) { u32 tid = bpf_get_current_pid_tgid(); process_key_t key = {0}; bpf_get_current_comm(&key.comm, sizeof(key.comm)); key.tid = tid; struct sock **sockpp; sockpp = sock_store.lookup(&key); if (sockpp == 0) { return 0; //miss the entry } struct sock *sk = *sockpp; return ret_state_update_func(sk); } """ kfunc_program = """ KFUNC_PROBE(tcp_fastretrans_alert, struct sock *sk) { return entry_state_update_func(sk); } KRETFUNC_PROBE(tcp_fastretrans_alert, struct sock *sk) { return ret_state_update_func(sk); } KFUNC_PROBE(tcp_enter_cwr, struct sock *sk) { return entry_state_update_func(sk); } KRETFUNC_PROBE(tcp_enter_cwr, struct sock *sk) { return ret_state_update_func(sk); } KFUNC_PROBE(tcp_enter_loss, struct sock *sk) { return entry_state_update_func(sk); } KRETFUNC_PROBE(tcp_enter_loss, struct sock *sk) { return ret_state_update_func(sk); } KFUNC_PROBE(tcp_enter_recovery, struct sock *sk) { return entry_state_update_func(sk); } KRETFUNC_PROBE(tcp_enter_recovery, struct sock *sk) { return ret_state_update_func(sk); } KFUNC_PROBE(tcp_process_tlp_ack, struct sock *sk) { return entry_state_update_func(sk); } KRETFUNC_PROBE(tcp_process_tlp_ack, struct sock *sk) { return ret_state_update_func(sk); } """ # code replace is_support_tp_ca = BPF.tracepoint_exists("tcp", "tcp_cong_state_set") if is_support_tp_ca: bpf_text = bpf_head_text + bpf_ca_tp_body_text else: bpf_text = bpf_head_text + bpf_extra_head bpf_text += bpf_no_ca_tp_body_text is_support_kfunc = BPF.support_kfunc() if is_support_kfunc: bpf_text += kfunc_program bpf_text = bpf_text.replace('SOCK_STORE_DEF', '') bpf_text = bpf_text.replace('SOCK_STORE_ADD', '') bpf_text = bpf_text.replace('SOCK_STORE_DEL', '') else: bpf_text += kprobe_program bpf_text = bpf_text.replace('SOCK_STORE_DEF', 'BPF_HASH(sock_store, process_key_t, struct sock *);') bpf_text = bpf_text.replace('SOCK_STORE_ADD', 'sock_store.update(&key, &sk);') bpf_text = bpf_text.replace('SOCK_STORE_DEL', 'sock_store.delete(&key);') if args.localport: bpf_text = bpf_text.replace('FILTER_LPORT', 'if (lport < %d || lport > %d) { return 0; }' % (start_lport, end_lport)) else: bpf_text = bpf_text.replace('FILTER_LPORT', '') if args.remoteport: bpf_text = bpf_text.replace('FILTER_DPORT', 'if (dport < %d || dport > %d) { return 0; }' % (start_rport, end_rport)) else: bpf_text = bpf_text.replace('FILTER_DPORT', '') table_def_text = """ u64 open_dura; u64 loss_dura; u64 disorder_dura; u64 recover_dura; u64 cwr_dura; u64 total_changes; """ store_text = """ datap->total_changes += 1; if (last_cong_state == (TCP_CA_Open + 1)) { datap->open_dura += ts; } else if (last_cong_state == (TCP_CA_Disorder + 1)) { datap->disorder_dura += ts; } else if (last_cong_state == (TCP_CA_CWR + 1)) { datap->cwr_dura += ts; } else if (last_cong_state == (TCP_CA_Recovery + 1)) { datap->recover_dura += ts; } else if (last_cong_state == (TCP_CA_Loss + 1)) { datap->loss_dura += ts; } """ store_dist_text = """ if (last_cong_state == (TCP_CA_Open + 1)) { key_s.state = TCP_CA_Open; } else if (last_cong_state == (TCP_CA_Disorder + 1)) { key_s.state = TCP_CA_Disorder; } else if (last_cong_state == (TCP_CA_CWR + 1)) { key_s.state = TCP_CA_CWR; } else if (last_cong_state == (TCP_CA_Recovery + 1)) { key_s.state = TCP_CA_Recovery; } else if (last_cong_state == (TCP_CA_Loss + 1)) { key_s.state = TCP_CA_Loss; } TIME_UNIT key_s.slot = bpf_log2l(ts); dist.atomic_increment(key_s); """ hist_table_text = """ typedef struct congest_state_key { u32 state; u64 slot; }congest_state_key_t; BPF_HISTOGRAM(dist, congest_state_key_t); """ if args.dist: bpf_text = bpf_text.replace('DEF_TEXT', '') bpf_text = bpf_text.replace('STORE', store_dist_text) bpf_text = bpf_text.replace('STATE_KEY', 'congest_state_key_t key_s = {0};') bpf_text = bpf_text.replace('HIST_TABLE', hist_table_text) if args.microseconds: bpf_text = bpf_text.replace('TIME_UNIT', '') else: bpf_text = bpf_text.replace('TIME_UNIT', 'ts /= 1000;') else: bpf_text = bpf_text.replace('DEF_TEXT', table_def_text) bpf_text = bpf_text.replace('STORE', store_text) bpf_text = bpf_text.replace('STATE_KEY', '') bpf_text = bpf_text.replace('HIST_TABLE', '') if debug or args.ebpf: print(bpf_text) if args.ebpf: exit() # load BPF program b = BPF(text=bpf_text) if not is_support_tp_ca and not is_support_kfunc: # all the tcp congestion control status update functions # are called by below 5 functions. b.attach_kprobe(event="tcp_fastretrans_alert", fn_name="entry_func") b.attach_kretprobe(event="tcp_fastretrans_alert", fn_name="ret_func") b.attach_kprobe(event="tcp_enter_cwr", fn_name="entry_func") b.attach_kretprobe(event="tcp_enter_cwr", fn_name="ret_func") b.attach_kprobe(event="tcp_process_tlp_ack", fn_name="entry_func") b.attach_kretprobe(event="tcp_process_tlp_ack", fn_name="ret_func") b.attach_kprobe(event="tcp_enter_loss", fn_name="entry_func") b.attach_kretprobe(event="tcp_enter_loss", fn_name="ret_func") b.attach_kprobe(event="tcp_enter_recovery", fn_name="entry_func") b.attach_kretprobe(event="tcp_enter_recovery", fn_name="ret_func") print("Tracing tcp congestion control status duration... Hit Ctrl-C to end.") def cong_state_to_name(state): # this need to match with kernel state state_name = ["open", "disorder", "cwr", "recovery", "loss"] return state_name[state] # output exiting = 0 if args.interval else 1 ipv6_stat = b.get_table("ipv6_stat") ipv4_stat = b.get_table("ipv4_stat") if args.dist: dist = b.get_table("dist") label = "ms" if args.microseconds: label = "us" while (1): try: sleep(int(args.interval)) except KeyboardInterrupt: exiting = 1 print() if args.timestamp: print("%-8s\n" % strftime("%H:%M:%S"), end="") if args.dist: if args.microseconds: dist.print_log2_hist("usecs", "tcp_congest_state", section_print_fn=cong_state_to_name) else: dist.print_log2_hist("msecs", "tcp_congest_state", section_print_fn=cong_state_to_name) dist.clear() else: if ipv4_stat: print("%-21s% -21s %-7s %-6s %-7s %-7s %-6s %-5s" % ("LAddrPort", "RAddrPort", "Open_" + label, "Dod_" + label, "Rcov_" + label, "Cwr_" + label, "Los_" + label, "Chgs")) laddr = "" raddr = "" for k, v in sorted(ipv4_stat.items(), key=lambda ipv4_stat: ipv4_stat[0].lport): laddr = inet_ntop(AF_INET, pack("I", k.saddr)) raddr = inet_ntop(AF_INET, pack("I", k.daddr)) open_dura = v.open_dura disorder_dura = v.disorder_dura recover_dura = v.recover_dura cwr_dura = v.cwr_dura loss_dura = v.loss_dura if not args.microseconds: open_dura /= 1000 disorder_dura /= 1000 recover_dura /= 1000 cwr_dura /= 1000 loss_dura /= 1000 if v.total_changes != 0: print("%-21s %-21s %-7d %-6d %-7d %-7d %-6d %-5d" % (laddr + "/" + str(k.lport), raddr + "/" + str(k.dport), open_dura, disorder_dura, recover_dura, cwr_dura, loss_dura, v.total_changes)) if ipv6_stat: print("%-32s %-32s %-7s %-6s %-7s %-7s %-6s %-5s" % ("LAddrPort6", "RAddrPort6", "Open_" + label, "Dod_" + label, "Rcov_" + label, "Cwr_" + label, "Los_" + label, "Chgs")) for k, v in sorted(ipv6_stat.items(), key=lambda ipv6_stat: ipv6_stat[0].lport): laddr = inet_ntop(AF_INET6, bytes(k.saddr)) raddr = inet_ntop(AF_INET6, bytes(k.daddr)) open_dura = v.open_dura disorder_dura = v.disorder_dura recover_dura = v.recover_dura cwr_dura = v.cwr_dura loss_dura = v.loss_dura if not args.microseconds: open_dura /= 1000 disorder_dura /= 1000 recover_dura /= 1000 cwr_dura /= 1000 loss_dura /= 1000 if v.total_changes != 0: print("%-32s %-32s %-7d %-7d %-7d %-6d %-6d %-5d" % (laddr + "/" + str(k.lport), raddr + "/" + str(k.dport), open_dura, disorder_dura, recover_dura, cwr_dura, loss_dura, v.total_changes)) ipv4_stat.clear() ipv6_stat.clear() countdown -= 1 if exiting or countdown == 0: exit()

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