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2017-10-06tuntap: Introduce per thread structure to suport multi-threads (VPP-1012)Steven2-65/+99
https://gerrit.fd.io/r/#/c/8551/ decoupled the global variable, namely tm->iovecs from TX and RX. However, to support multi-threads, we have to eliminate the use of this global variable with per thread variable. I notice that rx_buffers must also be per thread variable. So, we introduce per thread struct to contain rx_buffers and iovecs. Each thread will find the per thread struct with thread_index. Change-Id: I61abf2fdace8d722525a382ac72f0d04a173b9ce Signed-off-by: Steven <sluong@cisco.com> (cherry picked from commit 4cd257667406d0500a81323ef91f5c7c8c902b25)
2017-09-28tun/tap: Bad packets sent to kernel via tun/tap interfaceSteven2-22/+29
It was observed that under heavy traffic, VPP accidentally sent traffic with the wrong source and destination to the tun/tap interface. Traffic appears to be sent to the wrong direction. This problem is only seen when worker thread is configured. When worker thread is used, TX and RX may reside in different core. Yet both TX and RX threads are sharing the same global variable, namely iovecs without any mutex or memory barrier protection. This creates a race condition when heavy traffic is blasted to VPP, like 1000 pps. We could create a mutex or memory barrier to ensure atomic memory access. But why bother? It is a lot cheaper to just decouple the iovecs such that TX and RX have their own iovecs. Change-Id: I86a5a19bd8de54d54f32e1f0845bae6a81bbf686 Signed-off-by: Steven <sluong@cisco.com> (cherry picked from commit 4ff586d1c6fc5c40e1548cd6f221a8a7f3ad033b)
2017-09-09move unix_file_* code to vppinfraDamjan Marion2-16/+13
This will allow us to use this code in client libraries without vlib. Change-Id: I8557b752496841ba588aa36b6082cbe2cd1867fe Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-08-18Use correct msg ID in the sw-interface-event from TAP and VHOSTNeale Ranns1-1/+1
Change-Id: I0124fa264f7f390fc7cd9722da59be03116831c5 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-08-11Dedicated SW Interface EventNeale Ranns1-3/+3
Change-Id: I06a10a4291e61aec3f1396d2514ed6fe3901897a Signed-off-by: Neale Ranns <neale.ranns@cisco.com> Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
2017-08-11the automatic addition of IP address to the magic TAP interface should only ↵Neale Ranns1-0/+21
happen for one table Change-Id: I99d3e9227c33ee42b90e4842080960fcc6c03913 Signed-off-by: Neale Ranns <nranns@cisco.com>
2017-08-02Fix tcp tx buffer allocationFlorin Coras1-1/+44
- Make tcp output buffer allocation macro an inline function - Use per ip version per thread tx frames for retransmits and timer events - Fix / parameterize tcp data structure preallocation - Add a couple of gdb-callable show commands - Fix local endpoint cleanup Change-Id: I67b47b7570aa14cb4634b6fd93c57cd2eacbfa29 Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-05-17VPP-846: tcp perf / scale / hardeningDave Barach1-1/+11
Fix builtin server event queue handling Change-Id: I21b49c37188746cadb2fd9423291c5dc1335798c Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-04-25"autoreply" flag: autogenerate standard xxx_reply_t messagesDave Barach1-11/+1
Change-Id: I72298aaae7d172082ece3a8edea4217c11b28d79 Signed-off-by: Dave Barach <dave@barachs.net>
2017-04-06Use thread local storage for thread indexDamjan Marion2-3/+3
This patch deprecates stack-based thread identification, Also removes requirement that thread stacks are adjacent. Finally, possibly annoying for some folks, it renames all occurences of cpu_index and cpu_number with thread index. Using word "cpu" is misleading here as thread can be migrated ti different CPU, and also it is not related to linux cpu index. Change-Id: I68cdaf661e701d2336fc953dcb9978d10a70f7c1 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-10VPP-659 TCP improvementsFlorin Coras1-1/+2
- builtin test echo server - fix SYN-ACK retransmit canceling - avoid sending spurious ACK if in LAST_ACK - improved client dummy test app - renamed tx fifo dequeuing and sending functions to avoid confusion - improved RST handling Change-Id: Ia14aad3df319540dcf6e6a4e18a9f8d423a4b83b Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-06features: take device-input buffer advance value directlyDamjan Marion2-3/+2
Change-Id: Ifac7d9134d03d79164ce6f06ae9413279bbaadb3 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-02-22VPP-635: CLI Memory leak with invalid parameterBilly McFall1-17/+40
In the CLI parsing, below is a common pattern: /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "x")) x = 1; : else return clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); } unformat_free (line_input); The 'else' returns if an unknown string is encountered. There a memory leak because the 'unformat_free(line_input)' is not called. There is a large number of instances of this pattern. Replaced the previous pattern with: /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "x")) x = 1; : else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); goto done: } } /* ...Remaining code... */ done: unformat_free (line_input); return error; } In multiple files, 'unformat_free (line_input);' was never called, so there was a memory leak whether an invalid string was entered or not. Also, there were multiple instance where: error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); used 'input' as the last parameter instead of 'line_input'. The result is that output did not contain the substring in error, instead just an empty string. Fixed all of those as well. There are a lot of file, and very mind numbing work, so tried to keep it to a pattern to avoid mistakes. Change-Id: I8902f0c32a47dd7fb3bb3471a89818571702f1d2 Signed-off-by: Billy McFall <bmcfall@redhat.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-01-20Fix coverity warning, VPP-608Dave Barach1-0/+3
Change-Id: I1086debdf90a51205af17c35e93cd9aeff598135 Signed-off-by: Dave Barach <dave@barachs.net>
2017-01-18Fix coverity warnings, VPP-608Dave Barach1-2/+3
Change-Id: Ib0144ba3a9a09971d3946c932e8fed6d5c1ad278 Signed-off-by: Dave Barach <dave@barachs.net>
2017-01-14Provision linux stack ip4 and ip6 addresses for tap interfacesDave Barach4-89/+269
To simplify system configuration. Converted existing code to use an argument structure, instead of [one or two too many] discrete parameters. Change-Id: I3eddfa74eeed918c1b04a6285fba494651594332 Signed-off-by: Dave Barach <dave@barachs.net>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion10-0/+3620
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>