bpf: Allow use of skc_to_mptcp_sock in cg_sockopt

Currently, bpf_skc_to_mptcp_sock() helper is not allowed to be used in cg_sockopt. This patch adds this permission. Thanks to the previous patch allowing skc_to_mptcp_sock() to be used with MPTCP sockets, this permission allows this helper to be use it in CGroup BPF hooks, e.g. [gs]etsocktopt. Signed-off-by: Geliang Tang <[email protected]> Reviewed-by: Matthieu Baerts (NGI0) <[email protected]>
multipath-tcp · Feb 25, 2025 · bf29f63 · bf29f63
1 parent 950410d
commit bf29f63
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
@@ -2358,6 +2358,8 @@ cg_sockopt_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 #ifdef CONFIG_INET
 	case BPF_FUNC_tcp_sock:
 		return &bpf_tcp_sock_proto;
+	case BPF_FUNC_skc_to_mptcp_sock:
+		return &bpf_skc_to_mptcp_sock_proto;
 #endif
 	case BPF_FUNC_perf_event_output:
 		return &bpf_event_output_data_proto;