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| author | Daan De Meyer <daan.j.demeyer@gmail.com> | 2023-10-11 20:51:04 +0200 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-10-12 00:03:40 +0200 |
| commit | fefba7d1ae198dcbf8b3b432de46a4e29f8dbd8c (patch) | |
| tree | c5f80a6e2d899544c4d0709dbd7dede2aefa103a /net/ipv4/tcp_ipv4.c | |
| parent | selftests/bpf: Add missing section name tests for getpeername/getsockname (diff) | |
| download | linux-fefba7d1ae198dcbf8b3b432de46a4e29f8dbd8c.tar.xz linux-fefba7d1ae198dcbf8b3b432de46a4e29f8dbd8c.zip | |
bpf: Propagate modified uaddrlen from cgroup sockaddr programs
As prep for adding unix socket support to the cgroup sockaddr hooks,
let's propagate the sockaddr length back to the caller after running
a bpf cgroup sockaddr hook program. While not important for AF_INET or
AF_INET6, the sockaddr length is important when working with AF_UNIX
sockaddrs as the size of the sockaddr cannot be determined just from the
address family or the sockaddr's contents.
__cgroup_bpf_run_filter_sock_addr() is modified to take the uaddrlen as
an input/output argument. After running the program, the modified sockaddr
length is stored in the uaddrlen pointer.
Signed-off-by: Daan De Meyer <daan.j.demeyer@gmail.com>
Link: https://lore.kernel.org/r/20231011185113.140426-3-daan.j.demeyer@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index f13eb7e23d03..7c18dd3ce011 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -194,7 +194,7 @@ static int tcp_v4_pre_connect(struct sock *sk, struct sockaddr *uaddr, sock_owned_by_me(sk); - return BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr); + return BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr, &addr_len); } /* This will initiate an outgoing connection. */ |