vppinfra: Check for NULL vec before the backwards iteration - vpp

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author	Neale Ranns <neale@graphiant.com>	2022-01-09 13:24:47 +0000
committer	Damjan Marion <dmarion@me.com>	2022-01-09 14:32:30 +0000
commit	9d33cfc0bc1928f0b4c8aa95c170cf91ee8011a0 (patch)
tree	ecf02868928c67abaa349c36fbe406f93dd47a83 /src/vnet/interface_output.c
parent	221be7c03f8daf5b9c00b2509ebbf2c6e7e6232d (diff)

vppinfra: Check for NULL vec before the backwards iteration

Type: improvement 'vec_end(v) - 1' does not yield a good starting point. Check for NULL vec before the loop, so the user does not have to. Signed-off-by: Neale Ranns <neale@graphiant.com> Change-Id: Ia174ec8095bc476853cce709a7048d7a3e3b377d

Diffstat (limited to 'src/vnet/interface_output.c')

0 files changed, 0 insertions, 0 deletions

.. _ip1: .. toctree:: .. note:: For a complete list of CLI Debug commands refer to the Debug CLI section of the `Source Code Documents <https://docs.fd.io/vpp/18.07/clicmd.html>`_ . IP Route ========== Summary/Usage -------------- `ip route [add|del] [count <*n*>] <*dst-ip-addr*>/<*width*> [table <*table-id*>] via [next-hop-address[next-hop-interface] [next-hop-table <*value*>] [weight <*value*>] [preference <*value*>] [udp-encap-id <*value*>] [ip4-lookup-in-table <*value*>] [ip6-lookup-in-table <*value*>] [mpls-lookup-in-table <*value*>] [resolve-via-host] [resolve-via-connected] [rx-ip4 <*interface*>] [out-labels <*value value value*>]` Description ------------ This command is used to add or delete IPv4 or IPv6 routes. All IP Addresses ('<*dst-ip-addr*>/<*width*>', '<*next-hop-ip-addr*>' and '<*adj-hop-ip-addr*>') can be IPv4 or IPv6, but all must be of the same form in a single command. To display the current set of routes, use the commands 'show ip fib' and 'show ip6 fib'. Example Usage -------------- Example of how to add a straight forward static route: .. code-block:: console vpp# ip route add 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0 Example of how to delete a straight forward static route: .. code-block:: console vpp# ip route del 6.0.1.2/32 via 6.0.0.1 GigabitEthernet2/0/0 Mainly for route add/del performance testing, one can add or delete multiple routes by adding 'count N' to the previous item: .. code-block:: console vpp# ip route add count 10 7.0.0.0/24 via 6.0.0.1 GigabitEthernet2/0/0 Add multiple routes for the same destination to create equal-cost multipath: .. code-block:: console vpp# ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 vpp# ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 For unequal-cost multipath, specify the desired weights. This combination of weights results in 3/4 of the traffic following the second path, 1/4 following the first path: .. code-block:: console vpp# ip route add 7.0.0.1/32 via 6.0.0.1 GigabitEthernet2/0/0 weight 1 vpp# ip route add 7.0.0.1/32 via 6.0.0.2 GigabitEthernet2/0/0 weight 3 To add a route to a particular FIB table (VRF), use: .. code-block:: console vpp# ip route add 172.16.24.0/24 table 7 via GigabitEthernet2/0/0 Declaration and Implementation --------------------------------- **Declaration:** ip_route_command (src/vnet/ip/lookup.c line 641) **Implementation:** vnet_ip_route_cmd Ping ===== Summary/Usage -------------- ping {<*ip-addr*> | ipv4 <*ip4-addr*> | ipv6 <*ip6-addr*>} [ipv4 <*ip4-addr*> | ipv6 <*ip6-addr*>] [source <*interface*>] [size <*pktsize*>] [interval <*sec*>] [repeat <*cnt*>] [table-id <*id*>] [verbose] Description ------------ This command sends an ICMP ECHO_REQUEST to network hosts. The address can be an IPv4 or IPv6 address (or both at the same time). Example Usage -------------- Example of how ping an IPv4 address: .. code-block:: console vpp# ping 172.16.1.2 source GigabitEthernet2/0/0 repeat 2 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1090 ms 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0914 ms Statistics: 2 sent, 2 received, 0% packet loss Example of how ping both an IPv4 address and IPv6 address at the same time: vpp# ping 172.16.1.2 ipv6 fe80::24a5:f6ff:fe9c:3a36 source GigabitEthernet2/0/0 repeat 2 verbose Adjacency index: 10, sw_if_index: 1 Adj: ip6-discover-neighbor Adj Interface: 0 Forced set interface: 1 Adjacency index: 0, sw_if_index: 4294967295 Adj: ip4-miss Adj Interface: 0 Forced set interface: 1 Source address: 172.16.1.1 64 bytes from 172.16.1.2: icmp_seq=1 ttl=64 time=.1899 ms Adjacency index: 10, sw_if_index: 1 Adj: ip6-discover-neighbor Adj Interface: 0 Forced set interface: 1 Adjacency index: 0, sw_if_index: 4294967295 Adj: ip4-miss Adj Interface: 0 Forced set interface: 1 Source address: 172.16.1.1 64 bytes from 172.16.1.2: icmp_seq=2 ttl=64 time=.0910 ms Statistics: 4 sent, 2 received, 50% packet loss Declaration and Implementation ------------------------------- Declaration: ping_command (src/vnet/ip/ping.c line 899) Implementation: ping_ip_address Set Interface IP Address ========================= `Set Interface IP Address <../interface/setinterface.html#set-interface-ip-address>`_ Show IP Arp ============= `Show IP-Arp <../show/show.html#show-ip-arp>`_ Show IP Fib ============ `Show IP-Fib <../show/show.html#show-ip-fib>`_


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