bpf, tcx: Get rid of tcx_link_const

Small clean up to get rid of the extra tcx_link_const() and only retain
the tcx_link().

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20231023185015.21152-1-daniel@iogearbox.net
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>

Author: borkmann

include/net/tcx.h

@@ -38,16 +38,11 @@ static inline struct tcx_entry *tcx_entry(struct bpf_mprog_entry *entry)
 	return container_of(bundle, struct tcx_entry, bundle);
 }
 
-static inline struct tcx_link *tcx_link(struct bpf_link *link)
+static inline struct tcx_link *tcx_link(const struct bpf_link *link)
 {
 	return container_of(link, struct tcx_link, link);
 }
 
-static inline const struct tcx_link *tcx_link_const(const struct bpf_link *link)
-{
-	return tcx_link((struct bpf_link *)link);
-}
-
 void tcx_inc(void);
 void tcx_dec(void);
 

kernel/bpf/tcx.c

@@ -250,7 +250,7 @@ static void tcx_link_dealloc(struct bpf_link *link)
 
 static void tcx_link_fdinfo(const struct bpf_link *link, struct seq_file *seq)
 {
-	const struct tcx_link *tcx = tcx_link_const(link);
+	const struct tcx_link *tcx = tcx_link(link);
 	u32 ifindex = 0;
 
 	rtnl_lock();
@@ -267,7 +267,7 @@ static void tcx_link_fdinfo(const struct bpf_link *link, struct seq_file *seq)
 static int tcx_link_fill_info(const struct bpf_link *link,
 			      struct bpf_link_info *info)
 {
-	const struct tcx_link *tcx = tcx_link_const(link);
+	const struct tcx_link *tcx = tcx_link(link);
 	u32 ifindex = 0;
 
 	rtnl_lock();