kernel/include/trace/events/fib6.h, branch linux-rolling-lts

tracing: ipv6: Add flow label to fib6_table_lookup tracepoint

2024-12-19T15:02:22Z

The different parameters affecting the IPv6 route lookup are printed to the trace buffer by the fib6_table_lookup tracepoint. Add the IPv6 flow label for better observability as it can affect the route lookup both in terms of multipath hash calculation and policy based routing (FIB rules). Example: # echo 1 > /sys/kernel/tracing/events/fib6/fib6_table_lookup/enable # ip -6 route get ::1 flowlabel 0x12345 ipproto udp sport 12345 dport 54321 &> /dev/null # cat /sys/kernel/tracing/trace_pipe ip-358 [010] ..... 44.897484: fib6_table_lookup: table 255 oif 0 iif 1 proto 17 ::/12345 -> ::1/54321 flowlabel 0x12345 tos 0 scope 0 flags 0 ==> dev lo gw :: err 0 Reviewed-by: Petr Machata Signed-off-by: Ido Schimmel Reviewed-by: Guillaume Nault Signed-off-by: Paolo Abeni

net: Replace strlcpy with strscpy

2023-07-04T18:40:16Z

strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). No return values were used, so direct replacement is safe. [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh Reviewed-by: Simon Horman Reviewed-by: David Ahern Signed-off-by: David S. Miller

ipv6: Remove in6addr_any alternatives.

2023-03-29T07:22:52Z

Some code defines the IPv6 wildcard address as a local variable and use it with memcmp() or ipv6_addr_equal(). Let's use in6addr_any and ipv6_addr_any() instead. Signed-off-by: Kuniyuki Iwashima Reviewed-by: Mark Bloch Reviewed-by: David Ahern Signed-off-by: David S. Miller

tracing/ipv4/ipv6: Use static array for name field in fib*_lookup_table event

2022-07-15T17:35:59Z

The fib_lookup_table and fib6_lookup_table events declare name as a dynamic_array, but also give it a fixed size, which defeats the purpose of the dynamic array, especially since the dynamic array also includes meta data in the event to specify its size. Since the size of the name is at most 16 bytes (defined by IFNAMSIZ), it is not worth spending the effort to determine the size of the string. Just use a fixed size array and copy into it. This will save 4 bytes that are used for the meta data that saves the size and position of a dynamic array, and even slightly speed up the event processing. Link: https://lkml.kernel.org/r/20220704091436.3705edbf@rorschach.local.home Cc: David S. Miller Cc: netdev@vger.kernel.org Acked-by: Jakub Kicinski Reviewed-by: David Ahern Signed-off-by: Steven Rostedt (Google)

ipv6: Add fib6_type and fib6_flags to fib6_result

2019-04-18T06:11:30Z

Add the fib6_flags and fib6_type to fib6_result. Update the lookup helpers to set them and update post fib lookup users to use the version from the result. This allows nexthop objects to have blackhole nexthop. Signed-off-by: David Ahern Signed-off-by: David S. Miller

ipv6: Pass fib6_result to fib6_table_lookup tracepoint

2019-04-18T06:10:47Z

Change fib6_table_lookup tracepoint to take the fib6_result and use the fib6_info and fib6_nh from it. Signed-off-by: David Ahern Signed-off-by: David S. Miller

ipv6: Rename fib6_nh entries

2019-03-29T17:48:04Z

Rename fib6_nh entries that will be moved to a fib_nh_common struct. Specifically, the device, gateway, flags, and lwtstate are common with all nexthop definitions. In some places new temporary variables are declared or local variables renamed to maintain line lengths. Rename only; no functional change intended. Signed-off-by: David Ahern Signed-off-by: David S. Miller

net/ipv6: Udate fib6_table_lookup tracepoint

2018-05-25T03:01:15Z

Commit bb0ad1987e96 ("ipv6: fib6_rules: support for match on sport, dport and ip proto") added support for protocol and ports to FIB rules. Update the FIB lookup tracepoint to dump the parameters. Signed-off-by: David Ahern Signed-off-by: David S. Miller

net/ipv6: Update fib6 tracepoint to take fib6_info

2018-05-10T22:10:57Z

Similar to IPv4, IPv6 should use the FIB lookup result in the tracepoint. Signed-off-by: David Ahern Acked-by: David S. Miller Signed-off-by: Daniel Borkmann

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-11-04T00:26:51Z

Files removed in 'net-next' had their license header updated in 'net'. We take the remove from 'net-next'. Signed-off-by: David S. Miller