linux/kernel/bpf
John Fastabend 1aa12bdf1b bpf: sockmap, add sock close() hook to remove socks
The selftests test_maps program was leaving dangling BPF sockmap
programs around because not all psock elements were removed from
the map. The elements in turn hold a reference on the BPF program
they are attached to causing BPF programs to stay open even after
test_maps has completed.

The original intent was that sk_state_change() would be called
when TCP socks went through TCP_CLOSE state. However, because
socks may be in SOCK_DEAD state or the sock may be a listening
socket the event is not always triggered.

To resolve this use the ULP infrastructure and register our own
proto close() handler. This fixes the above case.

Fixes: 174a79ff95 ("bpf: sockmap with sk redirect support")
Reported-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2018-02-06 11:39:32 +01:00
..
arraymap.c bpf: arraymap: use bpf_map_init_from_attr() 2018-01-18 22:54:25 +01:00
bpf_lru_list.c bpf: lru: Lower the PERCPU_NR_SCANS from 16 to 4 2017-04-17 13:55:52 -04:00
bpf_lru_list.h bpf: Only set node->ref = 1 if it has not been set 2017-09-01 09:57:39 -07:00
cgroup.c bpf/cgroup: fix a verification error for a CGROUP_DEVICE type prog 2017-12-19 01:43:29 +01:00
core.c bpf: fix bpf_prog_array_copy_to_user() issues 2018-02-03 01:49:21 +01:00
cpumap.c bpf: cpumap: make some functions static 2018-01-17 00:12:58 +01:00
devmap.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
disasm.c bpf: allow for correlation of maps and helpers in dump 2017-12-20 18:09:40 -08:00
disasm.h bpf: annotate bpf_insn_print_t with __printf 2018-01-17 01:15:05 +01:00
hashtab.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
helpers.c bpf: rename ARG_PTR_TO_STACK 2017-01-09 16:56:27 -05:00
inode.c Merge branch 'work.mqueue' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-01-30 18:32:21 -08:00
lpm_trie.c bpf: fix kernel page fault in lpm map trie_get_next_key 2018-01-26 17:06:22 -08:00
Makefile bpf: only build sockmap with CONFIG_INET 2018-01-04 19:01:14 +01:00
map_in_map.c bpf: Add syscall lookup support for fd array and htab 2017-06-29 13:13:25 -04:00
map_in_map.h bpf: Add syscall lookup support for fd array and htab 2017-06-29 13:13:25 -04:00
offload.c bpf: offload: report device information about offloaded maps 2018-01-18 22:54:25 +01:00
percpu_freelist.c bpf: fix lockdep splat 2017-11-15 19:46:32 +09:00
percpu_freelist.h bpf: introduce percpu_freelist 2016-03-08 15:28:31 -05:00
sockmap.c bpf: sockmap, add sock close() hook to remove socks 2018-02-06 11:39:32 +01:00
stackmap.c bpf: add helper for copying attrs to struct bpf_map 2018-01-14 23:36:29 +01:00
syscall.c bpf: Use the IS_FD_ARRAY() macro in map_update_elem() 2018-01-25 18:05:24 -08:00
tnum.c bpf/verifier: track signed and unsigned min/max values 2017-08-08 17:51:34 -07:00
verifier.c bpf: fix subprog verifier bypass by div/mod by 0 exception 2018-01-26 16:42:05 -08:00