We can change tcp_rsk() and inet_rsk() to propagate their argument const qualifier thanks to container_of_const(). Signed-off-by: Eric Dumazet --- include/linux/tcp.h | 5 +---- include/net/inet_sock.h | 5 +---- include/trace/events/tcp.h | 2 +- net/ipv4/inet_connection_sock.c | 2 +- net/ipv6/inet6_connection_sock.c | 2 +- 5 files changed, 5 insertions(+), 11 deletions(-) diff --git a/include/linux/tcp.h b/include/linux/tcp.h index 20b8c6e21fef36984810541a06fcb7ba8f0c45b1..367b491ddf978061d5a88ab02546ec99be1cca63 100644 --- a/include/linux/tcp.h +++ b/include/linux/tcp.h @@ -181,10 +181,7 @@ struct tcp_request_sock { #endif }; -static inline struct tcp_request_sock *tcp_rsk(const struct request_sock *req) -{ - return (struct tcp_request_sock *)req; -} +#define tcp_rsk(ptr) container_of_const(ptr, struct tcp_request_sock, req.req) static inline bool tcp_rsk_used_ao(const struct request_sock *req) { diff --git a/include/net/inet_sock.h b/include/net/inet_sock.h index 3370159556b8602d1ceef06c0c742479452602df..903b2263ec8031565990dc52b921352e6a642b1a 100644 --- a/include/net/inet_sock.h +++ b/include/net/inet_sock.h @@ -100,10 +100,7 @@ struct inet_request_sock { }; }; -static inline struct inet_request_sock *inet_rsk(const struct request_sock *sk) -{ - return (struct inet_request_sock *)sk; -} +#define inet_rsk(ptr) container_of_const(ptr, struct inet_request_sock, req) static inline u32 inet_request_mark(const struct sock *sk, struct sk_buff *skb) { diff --git a/include/trace/events/tcp.h b/include/trace/events/tcp.h index 6757233bd0641778ce3ee260c9d757070adc0fcf..f155f95cdb6e910b8718e11d32d150cff8de3266 100644 --- a/include/trace/events/tcp.h +++ b/include/trace/events/tcp.h @@ -305,7 +305,7 @@ TRACE_EVENT(tcp_retransmit_synack, ), TP_fast_assign( - struct inet_request_sock *ireq = inet_rsk(req); + const struct inet_request_sock *ireq = inet_rsk(req); __be32 *p32; __entry->skaddr = sk; diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c index 97d57c52b9ad953d7ec1ad679237b5d122f47470..13372d2cbed53e83510e24a34bc57c7de0a17004 100644 --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -1196,7 +1196,7 @@ struct sock *inet_csk_clone_lock(const struct sock *sk, { struct sock *newsk = sk_clone_lock(sk, priority); struct inet_connection_sock *newicsk; - struct inet_request_sock *ireq; + const struct inet_request_sock *ireq; struct inet_sock *newinet; if (!newsk) diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c index ea5cf3fdfdd648e43f4c53611f61509ce06d4cf8..3aedd51c9bdb18b3b45ff3f6b56666e2ffd1f515 100644 --- a/net/ipv6/inet6_connection_sock.c +++ b/net/ipv6/inet6_connection_sock.c @@ -29,7 +29,7 @@ struct dst_entry *inet6_csk_route_req(const struct sock *sk, const struct request_sock *req, u8 proto) { - struct inet_request_sock *ireq = inet_rsk(req); + const struct inet_request_sock *ireq = inet_rsk(req); const struct ipv6_pinfo *np = inet6_sk(sk); struct in6_addr *final_p, final; struct dst_entry *dst; -- 2.52.0.457.g6b5491de43-goog