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authorDaan De Meyer <daan.j.demeyer@gmail.com>2023-10-11 21:51:04 +0300
committerMartin KaFai Lau <martin.lau@kernel.org>2023-10-12 01:03:40 +0300
commitfefba7d1ae198dcbf8b3b432de46a4e29f8dbd8c (patch)
treec5f80a6e2d899544c4d0709dbd7dede2aefa103a /net/ipv6/tcp_ipv6.c
parentfeba7b634ef0d003184d6988d96c34ab3c50de59 (diff)
downloadlinux-fefba7d1ae198dcbf8b3b432de46a4e29f8dbd8c.tar.xz
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/ipv6/tcp_ipv6.c')
-rw-r--r--net/ipv6/tcp_ipv6.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 94afb8d0f2d0..3a1e76a2d33e 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -135,7 +135,7 @@ static int tcp_v6_pre_connect(struct sock *sk, struct sockaddr *uaddr,
sock_owned_by_me(sk);
- return BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr);
+ return BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr, &addr_len);
}
static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,