| /* |
| * Copyright (c) 2020 Cisco and/or its affiliates. |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <vnet/tcp/tcp.h> |
| #include <vnet/tcp/tcp_inlines.h> |
| #include <vnet/dpo/receive_dpo.h> |
| #include <vnet/ip-neighbor/ip_neighbor.h> |
| |
| const char *tcp_fsm_states[] = { |
| #define _(sym, str) str, |
| foreach_tcp_fsm_state |
| #undef _ |
| }; |
| |
| u8 * |
| format_tcp_state (u8 * s, va_list * args) |
| { |
| u32 state = va_arg (*args, u32); |
| |
| if (state < TCP_N_STATES) |
| s = format (s, "%s", tcp_fsm_states[state]); |
| else |
| s = format (s, "UNKNOWN (%d (0x%x))", state, state); |
| return s; |
| } |
| |
| const char *tcp_cfg_flags_str[] = { |
| #define _(sym, str) str, |
| foreach_tcp_cfg_flag |
| #undef _ |
| }; |
| |
| static u8 * |
| format_tcp_cfg_flags (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| int i, last = -1; |
| |
| for (i = 0; i < TCP_CFG_N_FLAG_BITS; i++) |
| if (tc->cfg_flags & (1 << i)) |
| last = i; |
| for (i = 0; i < last; i++) |
| { |
| if (tc->cfg_flags & (1 << i)) |
| s = format (s, "%s, ", tcp_cfg_flags_str[i]); |
| } |
| if (last >= 0) |
| s = format (s, "%s", tcp_cfg_flags_str[last]); |
| return s; |
| } |
| |
| const char *tcp_connection_flags_str[] = { |
| #define _(sym, str) str, |
| foreach_tcp_connection_flag |
| #undef _ |
| }; |
| |
| static u8 * |
| format_tcp_connection_flags (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| int i, last = -1; |
| |
| for (i = 0; i < TCP_CONN_N_FLAG_BITS; i++) |
| if (tc->flags & (1 << i)) |
| last = i; |
| for (i = 0; i < last; i++) |
| { |
| if (tc->flags & (1 << i)) |
| s = format (s, "%s, ", tcp_connection_flags_str[i]); |
| } |
| if (last >= 0) |
| s = format (s, "%s", tcp_connection_flags_str[last]); |
| return s; |
| } |
| |
| const char *tcp_conn_timers[] = { |
| #define _(sym, str) str, |
| foreach_tcp_timer |
| #undef _ |
| }; |
| |
| static u8 * |
| format_tcp_timers (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| int i, last = -1; |
| |
| for (i = 0; i < TCP_N_TIMERS; i++) |
| if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID) |
| last = i; |
| |
| for (i = 0; i < last; i++) |
| { |
| if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID) |
| s = format (s, "%s,", tcp_conn_timers[i]); |
| } |
| |
| if (last >= 0) |
| s = format (s, "%s", tcp_conn_timers[i]); |
| |
| return s; |
| } |
| |
| static u8 * |
| format_tcp_congestion_status (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| if (tcp_in_recovery (tc)) |
| s = format (s, "recovery"); |
| else if (tcp_in_fastrecovery (tc)) |
| s = format (s, "fastrecovery"); |
| else |
| s = format (s, "none"); |
| return s; |
| } |
| |
| static i32 |
| tcp_rcv_wnd_available (tcp_connection_t * tc) |
| { |
| return (i32) tc->rcv_wnd - (tc->rcv_nxt - tc->rcv_las); |
| } |
| |
| static u8 * |
| format_tcp_congestion (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| u32 indent = format_get_indent (s), prr_space = 0; |
| |
| s = format (s, "%U ", format_tcp_congestion_status, tc); |
| s = format (s, "algo %s cwnd %u ssthresh %u bytes_acked %u\n", |
| tc->cc_algo->name, tc->cwnd, tc->ssthresh, tc->bytes_acked); |
| s = format (s, "%Ucc space %u prev_cwnd %u prev_ssthresh %u\n", |
| format_white_space, indent, tcp_available_cc_snd_space (tc), |
| tc->prev_cwnd, tc->prev_ssthresh); |
| s = format (s, "%Usnd_cong %u dupack %u limited_tx %u\n", |
| format_white_space, indent, tc->snd_congestion - tc->iss, |
| tc->rcv_dupacks, tc->limited_transmit - tc->iss); |
| s = format (s, "%Urxt_bytes %u rxt_delivered %u rxt_head %u rxt_ts %u\n", |
| format_white_space, indent, tc->snd_rxt_bytes, |
| tc->rxt_delivered, tc->rxt_head - tc->iss, |
| tcp_time_now_w_thread (tc->c_thread_index) - tc->snd_rxt_ts); |
| if (tcp_in_fastrecovery (tc)) |
| prr_space = tcp_fastrecovery_prr_snd_space (tc); |
| s = format (s, "%Uprr_start %u prr_delivered %u prr space %u\n", |
| format_white_space, indent, tc->prr_start - tc->iss, |
| tc->prr_delivered, prr_space); |
| return s; |
| } |
| |
| static u8 * |
| format_tcp_stats (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| u32 indent = format_get_indent (s); |
| s = format (s, "in segs %lu dsegs %lu bytes %lu dupacks %u\n", |
| tc->segs_in, tc->data_segs_in, tc->bytes_in, tc->dupacks_in); |
| s = format (s, "%Uout segs %lu dsegs %lu bytes %lu dupacks %u\n", |
| format_white_space, indent, tc->segs_out, |
| tc->data_segs_out, tc->bytes_out, tc->dupacks_out); |
| s = format (s, "%Ufr %u tr %u rxt segs %lu bytes %lu duration %.3f\n", |
| format_white_space, indent, tc->fr_occurences, |
| tc->tr_occurences, tc->segs_retrans, tc->bytes_retrans, |
| tcp_time_now_us (tc->c_thread_index) - tc->start_ts); |
| s = format (s, "%Uerr wnd data below %u above %u ack below %u above %u", |
| format_white_space, indent, tc->errors.below_data_wnd, |
| tc->errors.above_data_wnd, tc->errors.below_ack_wnd, |
| tc->errors.above_ack_wnd); |
| return s; |
| } |
| |
| static u8 * |
| format_tcp_vars (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| s = format (s, " index: %u cfg: %U flags: %U timers: %U\n", tc->c_c_index, |
| format_tcp_cfg_flags, tc, format_tcp_connection_flags, tc, |
| format_tcp_timers, tc); |
| s = format (s, " snd_una %u snd_nxt %u snd_una_max %u", |
| tc->snd_una - tc->iss, tc->snd_nxt - tc->iss, |
| tc->snd_una_max - tc->iss); |
| s = format (s, " rcv_nxt %u rcv_las %u\n", |
| tc->rcv_nxt - tc->irs, tc->rcv_las - tc->irs); |
| s = format (s, " snd_wnd %u rcv_wnd %u rcv_wscale %u ", |
| tc->snd_wnd, tc->rcv_wnd, tc->rcv_wscale); |
| s = format (s, "snd_wl1 %u snd_wl2 %u\n", tc->snd_wl1 - tc->irs, |
| tc->snd_wl2 - tc->iss); |
| s = format (s, " flight size %u out space %u rcv_wnd_av %u", |
| tcp_flight_size (tc), tcp_available_output_snd_space (tc), |
| tcp_rcv_wnd_available (tc)); |
| s = format (s, " tsval_recent %u\n", tc->tsval_recent); |
| s = format (s, " tsecr %u tsecr_last_ack %u tsval_recent_age %u", |
| tc->rcv_opts.tsecr, tc->tsecr_last_ack, |
| tcp_time_now () - tc->tsval_recent_age); |
| s = format (s, " snd_mss %u\n", tc->snd_mss); |
| s = format (s, " rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %.4f", |
| tc->rto, tc->rto_boff, tc->srtt, tc->mrtt_us * 1000, tc->rttvar, |
| tc->rtt_ts); |
| s = format (s, " rtt_seq %u\n", tc->rtt_seq - tc->iss); |
| s = format (s, " next_node %u opaque 0x%x fib_index %u\n", |
| tc->next_node_index, tc->next_node_opaque, tc->c_fib_index); |
| s = format (s, " cong: %U", format_tcp_congestion, tc); |
| |
| if (tc->state >= TCP_STATE_ESTABLISHED) |
| { |
| s = format (s, " sboard: %U\n", format_tcp_scoreboard, &tc->sack_sb, |
| tc); |
| s = format (s, " stats: %U\n", format_tcp_stats, tc); |
| } |
| if (vec_len (tc->snd_sacks)) |
| s = format (s, " sacks tx: %U\n", format_tcp_sacks, tc); |
| |
| return s; |
| } |
| |
| u8 * |
| format_tcp_connection_id (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| if (!tc) |
| return s; |
| if (tc->c_is_ip4) |
| { |
| s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index, |
| tc->c_s_index, "T", format_ip4_address, &tc->c_lcl_ip4, |
| clib_net_to_host_u16 (tc->c_lcl_port), format_ip4_address, |
| &tc->c_rmt_ip4, clib_net_to_host_u16 (tc->c_rmt_port)); |
| } |
| else |
| { |
| s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index, |
| tc->c_s_index, "T", format_ip6_address, &tc->c_lcl_ip6, |
| clib_net_to_host_u16 (tc->c_lcl_port), format_ip6_address, |
| &tc->c_rmt_ip6, clib_net_to_host_u16 (tc->c_rmt_port)); |
| } |
| |
| return s; |
| } |
| |
| u8 * |
| format_tcp_connection (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| u32 verbose = va_arg (*args, u32); |
| |
| if (!tc) |
| return s; |
| s = format (s, "%-50U", format_tcp_connection_id, tc); |
| if (verbose) |
| { |
| s = format (s, "%-15U", format_tcp_state, tc->state); |
| if (verbose > 1) |
| s = format (s, "\n%U", format_tcp_vars, tc); |
| } |
| |
| return s; |
| } |
| |
| u8 * |
| format_tcp_sacks (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| sack_block_t *sacks = tc->snd_sacks; |
| sack_block_t *block; |
| int i, len = 0; |
| |
| len = vec_len (sacks); |
| for (i = 0; i < len - 1; i++) |
| { |
| block = &sacks[i]; |
| s = format (s, " start %u end %u\n", block->start - tc->irs, |
| block->end - tc->irs); |
| } |
| if (len) |
| { |
| block = &sacks[len - 1]; |
| s = format (s, " start %u end %u", block->start - tc->irs, |
| block->end - tc->irs); |
| } |
| return s; |
| } |
| |
| u8 * |
| format_tcp_rcv_sacks (u8 * s, va_list * args) |
| { |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| sack_block_t *sacks = tc->rcv_opts.sacks; |
| sack_block_t *block; |
| int i, len = 0; |
| |
| len = vec_len (sacks); |
| for (i = 0; i < len - 1; i++) |
| { |
| block = &sacks[i]; |
| s = format (s, " start %u end %u\n", block->start - tc->iss, |
| block->end - tc->iss); |
| } |
| if (len) |
| { |
| block = &sacks[len - 1]; |
| s = format (s, " start %u end %u", block->start - tc->iss, |
| block->end - tc->iss); |
| } |
| return s; |
| } |
| |
| static u8 * |
| format_tcp_sack_hole (u8 * s, va_list * args) |
| { |
| sack_scoreboard_hole_t *hole = va_arg (*args, sack_scoreboard_hole_t *); |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| if (tc) |
| s = format (s, " [%u, %u]", hole->start - tc->iss, hole->end - tc->iss); |
| else |
| s = format (s, " [%u, %u]", hole->start, hole->end); |
| return s; |
| } |
| |
| u8 * |
| format_tcp_scoreboard (u8 * s, va_list * args) |
| { |
| sack_scoreboard_t *sb = va_arg (*args, sack_scoreboard_t *); |
| tcp_connection_t *tc = va_arg (*args, tcp_connection_t *); |
| sack_scoreboard_hole_t *hole; |
| u32 indent = format_get_indent (s); |
| |
| s = format (s, "sacked %u last_sacked %u lost %u last_lost %u" |
| " rxt_sacked %u\n", |
| sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes, |
| sb->last_lost_bytes, sb->rxt_sacked); |
| s = format (s, "%Ulast_delivered %u high_sacked %u is_reneging %u\n", |
| format_white_space, indent, sb->last_bytes_delivered, |
| sb->high_sacked - tc->iss, sb->is_reneging); |
| s = format (s, "%Ucur_rxt_hole %u high_rxt %u rescue_rxt %u", |
| format_white_space, indent, sb->cur_rxt_hole, |
| sb->high_rxt - tc->iss, sb->rescue_rxt - tc->iss); |
| |
| hole = scoreboard_first_hole (sb); |
| if (hole) |
| s = format (s, "\n%Uhead %u tail %u %u holes:\n%U", format_white_space, |
| indent, sb->head, sb->tail, pool_elts (sb->holes), |
| format_white_space, indent); |
| |
| while (hole) |
| { |
| s = format (s, "%U", format_tcp_sack_hole, hole, tc); |
| hole = scoreboard_next_hole (sb, hole); |
| } |
| |
| return s; |
| } |
| |
| /** |
| * \brief Configure an ipv4 source address range |
| * @param vm vlib_main_t pointer |
| * @param start first ipv4 address in the source address range |
| * @param end last ipv4 address in the source address range |
| * @param table_id VRF / table ID, 0 for the default FIB |
| * @return 0 if all OK, else an error indication from api_errno.h |
| */ |
| |
| int |
| tcp_configure_v4_source_address_range (vlib_main_t * vm, |
| ip4_address_t * start, |
| ip4_address_t * end, u32 table_id) |
| { |
| u32 start_host_byte_order, end_host_byte_order; |
| fib_prefix_t prefix; |
| fib_node_index_t fei; |
| u32 fib_index = 0; |
| u32 sw_if_index; |
| int rv; |
| |
| clib_memset (&prefix, 0, sizeof (prefix)); |
| |
| fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id); |
| |
| if (fib_index == ~0) |
| return VNET_API_ERROR_NO_SUCH_FIB; |
| |
| start_host_byte_order = clib_net_to_host_u32 (start->as_u32); |
| end_host_byte_order = clib_net_to_host_u32 (end->as_u32); |
| |
| /* sanity check for reversed args or some such */ |
| if ((end_host_byte_order - start_host_byte_order) > (10 << 10)) |
| return VNET_API_ERROR_INVALID_ARGUMENT; |
| |
| /* Lookup the last address, to identify the interface involved */ |
| prefix.fp_len = 32; |
| prefix.fp_proto = FIB_PROTOCOL_IP4; |
| memcpy (&prefix.fp_addr.ip4, end, sizeof (ip4_address_t)); |
| |
| fei = fib_table_lookup (fib_index, &prefix); |
| |
| /* Couldn't find route to destination. Bail out. */ |
| if (fei == FIB_NODE_INDEX_INVALID) |
| return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB; |
| |
| sw_if_index = fib_entry_get_resolving_interface (fei); |
| |
| /* Configure proxy arp across the range */ |
| rv = ip4_neighbor_proxy_add (fib_index, start, end); |
| |
| if (rv) |
| return rv; |
| |
| rv = ip4_neighbor_proxy_enable (sw_if_index); |
| |
| if (rv) |
| return rv; |
| |
| do |
| { |
| dpo_id_t dpo = DPO_INVALID; |
| |
| vec_add1 (tcp_cfg.ip4_src_addrs, start[0]); |
| |
| /* Add local adjacencies for the range */ |
| |
| receive_dpo_add_or_lock (DPO_PROTO_IP4, ~0 /* sw_if_index */ , |
| NULL, &dpo); |
| prefix.fp_len = 32; |
| prefix.fp_proto = FIB_PROTOCOL_IP4; |
| prefix.fp_addr.ip4.as_u32 = start->as_u32; |
| |
| fib_table_entry_special_dpo_update (fib_index, |
| &prefix, |
| FIB_SOURCE_API, |
| FIB_ENTRY_FLAG_EXCLUSIVE, &dpo); |
| dpo_reset (&dpo); |
| |
| start_host_byte_order++; |
| start->as_u32 = clib_host_to_net_u32 (start_host_byte_order); |
| } |
| while (start_host_byte_order <= end_host_byte_order); |
| |
| return 0; |
| } |
| |
| /** |
| * \brief Configure an ipv6 source address range |
| * @param vm vlib_main_t pointer |
| * @param start first ipv6 address in the source address range |
| * @param end last ipv6 address in the source address range |
| * @param table_id VRF / table ID, 0 for the default FIB |
| * @return 0 if all OK, else an error indication from api_errno.h |
| */ |
| |
| int |
| tcp_configure_v6_source_address_range (vlib_main_t * vm, |
| ip6_address_t * start, |
| ip6_address_t * end, u32 table_id) |
| { |
| fib_prefix_t prefix; |
| u32 fib_index = 0; |
| fib_node_index_t fei; |
| u32 sw_if_index; |
| |
| clib_memset (&prefix, 0, sizeof (prefix)); |
| |
| fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id); |
| |
| if (fib_index == ~0) |
| return VNET_API_ERROR_NO_SUCH_FIB; |
| |
| while (1) |
| { |
| int i; |
| ip6_address_t tmp; |
| dpo_id_t dpo = DPO_INVALID; |
| |
| /* Remember this address */ |
| vec_add1 (tcp_cfg.ip6_src_addrs, start[0]); |
| |
| /* Lookup the prefix, to identify the interface involved */ |
| prefix.fp_len = 128; |
| prefix.fp_proto = FIB_PROTOCOL_IP6; |
| memcpy (&prefix.fp_addr.ip6, start, sizeof (ip6_address_t)); |
| |
| fei = fib_table_lookup (fib_index, &prefix); |
| |
| /* Couldn't find route to destination. Bail out. */ |
| if (fei == FIB_NODE_INDEX_INVALID) |
| return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB; |
| |
| sw_if_index = fib_entry_get_resolving_interface (fei); |
| |
| if (sw_if_index == (u32) ~ 0) |
| return VNET_API_ERROR_NO_MATCHING_INTERFACE; |
| |
| /* Add a proxy neighbor discovery entry for this address */ |
| ip6_neighbor_proxy_add (sw_if_index, start); |
| |
| /* Add a receive adjacency for this address */ |
| receive_dpo_add_or_lock (DPO_PROTO_IP6, ~0 /* sw_if_index */ , |
| NULL, &dpo); |
| |
| fib_table_entry_special_dpo_update (fib_index, |
| &prefix, |
| FIB_SOURCE_API, |
| FIB_ENTRY_FLAG_EXCLUSIVE, &dpo); |
| dpo_reset (&dpo); |
| |
| /* Done with the entire range? */ |
| if (!memcmp (start, end, sizeof (start[0]))) |
| break; |
| |
| /* Increment the address. DGMS. */ |
| tmp = start[0]; |
| for (i = 15; i >= 0; i--) |
| { |
| tmp.as_u8[i] += 1; |
| if (tmp.as_u8[i] != 0) |
| break; |
| } |
| start[0] = tmp; |
| } |
| return 0; |
| } |
| |
| static clib_error_t * |
| tcp_src_address_fn (vlib_main_t * vm, |
| unformat_input_t * input, vlib_cli_command_t * cmd_arg) |
| { |
| ip4_address_t v4start, v4end; |
| ip6_address_t v6start, v6end; |
| u32 table_id = 0; |
| int v4set = 0; |
| int v6set = 0; |
| int rv; |
| |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "%U - %U", unformat_ip4_address, &v4start, |
| unformat_ip4_address, &v4end)) |
| v4set = 1; |
| else if (unformat (input, "%U", unformat_ip4_address, &v4start)) |
| { |
| memcpy (&v4end, &v4start, sizeof (v4start)); |
| v4set = 1; |
| } |
| else if (unformat (input, "%U - %U", unformat_ip6_address, &v6start, |
| unformat_ip6_address, &v6end)) |
| v6set = 1; |
| else if (unformat (input, "%U", unformat_ip6_address, &v6start)) |
| { |
| memcpy (&v6end, &v6start, sizeof (v6start)); |
| v6set = 1; |
| } |
| else if (unformat (input, "fib-table %d", &table_id)) |
| ; |
| else |
| break; |
| } |
| |
| if (!v4set && !v6set) |
| return clib_error_return (0, "at least one v4 or v6 address required"); |
| |
| if (v4set) |
| { |
| rv = tcp_configure_v4_source_address_range (vm, &v4start, &v4end, |
| table_id); |
| switch (rv) |
| { |
| case 0: |
| break; |
| |
| case VNET_API_ERROR_NO_SUCH_FIB: |
| return clib_error_return (0, "Invalid table-id %d", table_id); |
| |
| case VNET_API_ERROR_INVALID_ARGUMENT: |
| return clib_error_return (0, "Invalid address range %U - %U", |
| format_ip4_address, &v4start, |
| format_ip4_address, &v4end); |
| default: |
| return clib_error_return (0, "error %d", rv); |
| break; |
| } |
| } |
| if (v6set) |
| { |
| rv = tcp_configure_v6_source_address_range (vm, &v6start, &v6end, |
| table_id); |
| switch (rv) |
| { |
| case 0: |
| break; |
| |
| case VNET_API_ERROR_NO_SUCH_FIB: |
| return clib_error_return (0, "Invalid table-id %d", table_id); |
| |
| default: |
| return clib_error_return (0, "error %d", rv); |
| break; |
| } |
| } |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (tcp_src_address_command, static) = |
| { |
| .path = "tcp src-address", |
| .short_help = "tcp src-address <ip-addr> [- <ip-addr>] add src address range", |
| .function = tcp_src_address_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| static u8 * |
| tcp_scoreboard_dump_trace (u8 * s, sack_scoreboard_t * sb) |
| { |
| #if TCP_SCOREBOARD_TRACE |
| |
| scoreboard_trace_elt_t *block; |
| int i = 0; |
| |
| if (!sb->trace) |
| return s; |
| |
| s = format (s, "scoreboard trace:"); |
| vec_foreach (block, sb->trace) |
| { |
| s = format (s, "{%u, %u, %u, %u, %u}, ", block->start, block->end, |
| block->ack, block->snd_una_max, block->group); |
| if ((++i % 3) == 0) |
| s = format (s, "\n"); |
| } |
| return s; |
| #else |
| return 0; |
| #endif |
| } |
| |
| static clib_error_t * |
| tcp_show_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd_arg) |
| { |
| transport_connection_t *tconn = 0; |
| tcp_connection_t *tc; |
| u8 *s = 0; |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "%U", unformat_transport_connection, &tconn, |
| TRANSPORT_PROTO_TCP)) |
| ; |
| else |
| return clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, input); |
| } |
| |
| if (!TCP_SCOREBOARD_TRACE) |
| { |
| vlib_cli_output (vm, "scoreboard tracing not enabled"); |
| return 0; |
| } |
| |
| tc = tcp_get_connection_from_transport (tconn); |
| s = tcp_scoreboard_dump_trace (s, &tc->sack_sb); |
| vlib_cli_output (vm, "%v", s); |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (tcp_show_scoreboard_trace_command, static) = |
| { |
| .path = "show tcp scoreboard trace", |
| .short_help = "show tcp scoreboard trace <connection>", |
| .function = tcp_show_scoreboard_trace_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| u8 * |
| tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose) |
| { |
| int i, trace_len; |
| scoreboard_trace_elt_t *trace; |
| u32 next_ack, left, group, has_new_ack = 0; |
| tcp_connection_t _dummy_tc, *dummy_tc = &_dummy_tc; |
| sack_block_t *block; |
| |
| if (!TCP_SCOREBOARD_TRACE) |
| { |
| s = format (s, "scoreboard tracing not enabled"); |
| return s; |
| } |
| |
| if (!tc) |
| return s; |
| |
| clib_memset (dummy_tc, 0, sizeof (*dummy_tc)); |
| tcp_connection_timers_init (dummy_tc); |
| scoreboard_init (&dummy_tc->sack_sb); |
| dummy_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK; |
| |
| #if TCP_SCOREBOARD_TRACE |
| trace = tc->sack_sb.trace; |
| trace_len = vec_len (tc->sack_sb.trace); |
| #endif |
| |
| for (i = 0; i < trace_len; i++) |
| { |
| if (trace[i].ack != 0) |
| { |
| dummy_tc->snd_una = trace[i].ack - 1448; |
| dummy_tc->snd_una_max = trace[i].ack; |
| } |
| } |
| |
| left = 0; |
| while (left < trace_len) |
| { |
| group = trace[left].group; |
| vec_reset_length (dummy_tc->rcv_opts.sacks); |
| has_new_ack = 0; |
| while (trace[left].group == group) |
| { |
| if (trace[left].ack != 0) |
| { |
| if (verbose) |
| s = format (s, "Adding ack %u, snd_una_max %u, segs: ", |
| trace[left].ack, trace[left].snd_una_max); |
| dummy_tc->snd_una_max = trace[left].snd_una_max; |
| next_ack = trace[left].ack; |
| has_new_ack = 1; |
| } |
| else |
| { |
| if (verbose) |
| s = format (s, "[%u, %u], ", trace[left].start, |
| trace[left].end); |
| vec_add2 (dummy_tc->rcv_opts.sacks, block, 1); |
| block->start = trace[left].start; |
| block->end = trace[left].end; |
| } |
| left++; |
| } |
| |
| /* Push segments */ |
| tcp_rcv_sacks (dummy_tc, next_ack); |
| if (has_new_ack) |
| dummy_tc->snd_una = next_ack; |
| |
| if (verbose) |
| s = format (s, "result: %U", format_tcp_scoreboard, |
| &dummy_tc->sack_sb); |
| |
| } |
| s = format (s, "result: %U", format_tcp_scoreboard, &dummy_tc->sack_sb); |
| |
| return s; |
| } |
| |
| static clib_error_t * |
| tcp_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd_arg) |
| { |
| transport_connection_t *tconn = 0; |
| tcp_connection_t *tc = 0; |
| u8 *str = 0; |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "%U", unformat_transport_connection, &tconn, |
| TRANSPORT_PROTO_TCP)) |
| ; |
| else |
| return clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, input); |
| } |
| |
| if (!TCP_SCOREBOARD_TRACE) |
| { |
| vlib_cli_output (vm, "scoreboard tracing not enabled"); |
| return 0; |
| } |
| |
| tc = tcp_get_connection_from_transport (tconn); |
| if (!tc) |
| { |
| vlib_cli_output (vm, "connection not found"); |
| return 0; |
| } |
| str = tcp_scoreboard_replay (str, tc, 1); |
| vlib_cli_output (vm, "%v", str); |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (tcp_replay_scoreboard_command, static) = |
| { |
| .path = "tcp replay scoreboard", |
| .short_help = "tcp replay scoreboard <connection>", |
| .function = tcp_scoreboard_trace_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| static clib_error_t * |
| show_tcp_punt_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd_arg) |
| { |
| tcp_main_t *tm = vnet_get_tcp_main (); |
| if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| return clib_error_return (0, "unknown input `%U'", format_unformat_error, |
| input); |
| vlib_cli_output (vm, "IPv4 TCP punt: %s", |
| tm->punt_unknown4 ? "enabled" : "disabled"); |
| vlib_cli_output (vm, "IPv6 TCP punt: %s", |
| tm->punt_unknown6 ? "enabled" : "disabled"); |
| return 0; |
| } |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (show_tcp_punt_command, static) = |
| { |
| .path = "show tcp punt", |
| .short_help = "show tcp punt", |
| .function = show_tcp_punt_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| static clib_error_t * |
| show_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd) |
| { |
| tcp_main_t *tm = vnet_get_tcp_main (); |
| tcp_worker_ctx_t *wrk; |
| u32 thread; |
| |
| if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| return clib_error_return (0, "unknown input `%U'", format_unformat_error, |
| input); |
| for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++) |
| { |
| wrk = tcp_get_worker (thread); |
| vlib_cli_output (vm, "Thread %u:\n", thread); |
| |
| if (clib_fifo_elts (wrk->pending_timers)) |
| vlib_cli_output (vm, " %lu pending timers", |
| clib_fifo_elts (wrk->pending_timers)); |
| |
| #define _(name,type,str) \ |
| if (wrk->stats.name) \ |
| vlib_cli_output (vm, " %lu %s", wrk->stats.name, str); |
| foreach_tcp_wrk_stat |
| #undef _ |
| } |
| |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (show_tcp_stats_command, static) = |
| { |
| .path = "show tcp stats", |
| .short_help = "show tcp stats", |
| .function = show_tcp_stats_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| static clib_error_t * |
| clear_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd) |
| { |
| tcp_main_t *tm = vnet_get_tcp_main (); |
| tcp_worker_ctx_t *wrk; |
| u32 thread; |
| |
| if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| return clib_error_return (0, "unknown input `%U'", format_unformat_error, |
| input); |
| |
| for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++) |
| { |
| wrk = tcp_get_worker (thread); |
| clib_memset (&wrk->stats, 0, sizeof (wrk->stats)); |
| } |
| |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (clear_tcp_stats_command, static) = |
| { |
| .path = "clear tcp stats", |
| .short_help = "clear tcp stats", |
| .function = clear_tcp_stats_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| static void |
| tcp_show_half_open (vlib_main_t * vm, u32 start, u32 end, u8 verbose) |
| { |
| tcp_main_t *tm = &tcp_main; |
| u8 output_suppressed = 0; |
| u32 n_elts, count = 0; |
| tcp_connection_t *tc; |
| int max_index, i; |
| |
| n_elts = pool_elts (tm->half_open_connections); |
| max_index = pool_len (tm->half_open_connections) - 1; |
| if (verbose && end == ~0 && n_elts > 50) |
| { |
| vlib_cli_output (vm, "Too many connections, use range <start> <end>"); |
| return; |
| } |
| |
| if (!verbose) |
| { |
| vlib_cli_output (vm, "%u tcp half-open connections", n_elts); |
| return; |
| } |
| |
| for (i = start; i <= clib_min (end, max_index); i++) |
| { |
| if (pool_is_free_index (tm->half_open_connections, i)) |
| continue; |
| |
| tc = pool_elt_at_index (tm->half_open_connections, i); |
| |
| count += 1; |
| if (verbose) |
| { |
| if (count > 50 || (verbose > 1 && count > 10)) |
| { |
| output_suppressed = 1; |
| continue; |
| } |
| } |
| vlib_cli_output (vm, "%U", format_tcp_connection, tc, verbose); |
| } |
| if (!output_suppressed) |
| vlib_cli_output (vm, "%u tcp half-open connections", n_elts); |
| else |
| vlib_cli_output (vm, "%u tcp half-open connections matched. Output " |
| "suppressed. Use finer grained filter.", count); |
| |
| } |
| |
| static clib_error_t * |
| show_tcp_half_open_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd) |
| { |
| unformat_input_t _line_input, *line_input = &_line_input; |
| u32 start, end = ~0, verbose = 0; |
| clib_error_t *error = 0; |
| |
| session_cli_return_if_not_enabled (); |
| |
| if (!unformat_user (input, unformat_line_input, line_input)) |
| { |
| tcp_show_half_open (vm, 0, ~0, 0); |
| return 0; |
| } |
| |
| while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (line_input, "range %u %u", &start, &end)) |
| ; |
| else if (unformat (line_input, "verbose %d"), &verbose) |
| ; |
| else if (unformat (line_input, "verbose")) |
| verbose = 1; |
| else |
| { |
| error = clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, input); |
| goto done; |
| } |
| } |
| |
| if (start > end) |
| { |
| error = clib_error_return (0, "invalid range start: %u end: %u", start, |
| end); |
| goto done; |
| } |
| |
| tcp_show_half_open (vm, start, end, verbose); |
| |
| done: |
| unformat_free (line_input); |
| return error; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (show_tcp_half_open_command, static) = |
| { |
| .path = "show tcp half-open", |
| .short_help = "show tcp half-open [verbose <n>] [range <start> <end>]", |
| .function = show_tcp_half_open_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| uword |
| unformat_tcp_cc_algo (unformat_input_t * input, va_list * va) |
| { |
| tcp_cc_algorithm_type_e *result = va_arg (*va, tcp_cc_algorithm_type_e *); |
| tcp_main_t *tm = &tcp_main; |
| char *cc_algo_name; |
| u8 found = 0; |
| uword *p; |
| |
| if (unformat (input, "%s", &cc_algo_name) |
| && ((p = hash_get_mem (tm->cc_algo_by_name, cc_algo_name)))) |
| { |
| *result = *p; |
| found = 1; |
| } |
| |
| vec_free (cc_algo_name); |
| return found; |
| } |
| |
| uword |
| unformat_tcp_cc_algo_cfg (unformat_input_t * input, va_list * va) |
| { |
| tcp_main_t *tm = vnet_get_tcp_main (); |
| tcp_cc_algorithm_t *cc_alg; |
| unformat_input_t sub_input; |
| int found = 0; |
| |
| vec_foreach (cc_alg, tm->cc_algos) |
| { |
| if (!unformat (input, cc_alg->name)) |
| continue; |
| |
| if (cc_alg->unformat_cfg |
| && unformat (input, "%U", unformat_vlib_cli_sub_input, &sub_input)) |
| { |
| if (cc_alg->unformat_cfg (&sub_input)) |
| found = 1; |
| } |
| } |
| return found; |
| } |
| |
| static clib_error_t * |
| tcp_config_fn (vlib_main_t * vm, unformat_input_t * input) |
| { |
| u32 cwnd_multiplier, tmp_time, mtu; |
| uword memory_size; |
| |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "preallocated-connections %d", |
| &tcp_cfg.preallocated_connections)) |
| ; |
| else if (unformat (input, "preallocated-half-open-connections %d", |
| &tcp_cfg.preallocated_half_open_connections)) |
| ; |
| else if (unformat (input, "buffer-fail-fraction %f", |
| &tcp_cfg.buffer_fail_fraction)) |
| ; |
| else if (unformat (input, "max-rx-fifo %U", unformat_memory_size, |
| &memory_size)) |
| { |
| if (memory_size >= 0x100000000) |
| { |
| return clib_error_return |
| (0, "max-rx-fifo %llu (0x%llx) too large", memory_size, |
| memory_size); |
| } |
| tcp_cfg.max_rx_fifo = memory_size; |
| } |
| else if (unformat (input, "min-rx-fifo %U", unformat_memory_size, |
| &memory_size)) |
| { |
| if (memory_size >= 0x100000000) |
| { |
| return clib_error_return |
| (0, "min-rx-fifo %llu (0x%llx) too large", memory_size, |
| memory_size); |
| } |
| tcp_cfg.min_rx_fifo = memory_size; |
| } |
| else if (unformat (input, "mtu %u", &mtu)) |
| tcp_cfg.default_mtu = mtu; |
| else if (unformat (input, "rwnd-min-update-ack %d", |
| &tcp_cfg.rwnd_min_update_ack)) |
| ; |
| else if (unformat (input, "initial-cwnd-multiplier %u", |
| &cwnd_multiplier)) |
| tcp_cfg.initial_cwnd_multiplier = cwnd_multiplier; |
| else if (unformat (input, "no-tx-pacing")) |
| tcp_cfg.enable_tx_pacing = 0; |
| else if (unformat (input, "tso")) |
| tcp_cfg.allow_tso = 1; |
| else if (unformat (input, "no-csum-offload")) |
| tcp_cfg.csum_offload = 0; |
| else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo, |
| &tcp_cfg.cc_algo)) |
| ; |
| else if (unformat (input, "%U", unformat_tcp_cc_algo_cfg)) |
| ; |
| else if (unformat (input, "closewait-time %u", &tmp_time)) |
| tcp_cfg.closewait_time = tmp_time / TCP_TIMER_TICK; |
| else if (unformat (input, "timewait-time %u", &tmp_time)) |
| tcp_cfg.timewait_time = tmp_time / TCP_TIMER_TICK; |
| else if (unformat (input, "finwait1-time %u", &tmp_time)) |
| tcp_cfg.finwait1_time = tmp_time / TCP_TIMER_TICK; |
| else if (unformat (input, "finwait2-time %u", &tmp_time)) |
| tcp_cfg.finwait2_time = tmp_time / TCP_TIMER_TICK; |
| else if (unformat (input, "lastack-time %u", &tmp_time)) |
| tcp_cfg.lastack_time = tmp_time / TCP_TIMER_TICK; |
| else if (unformat (input, "closing-time %u", &tmp_time)) |
| tcp_cfg.closing_time = tmp_time / TCP_TIMER_TICK; |
| else if (unformat (input, "cleanup-time %u", &tmp_time)) |
| tcp_cfg.cleanup_time = tmp_time / 1000.0; |
| else |
| return clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, input); |
| } |
| return 0; |
| } |
| |
| VLIB_CONFIG_FUNCTION (tcp_config_fn, "tcp"); |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |