diff mbox series

[net-next,7/9] net/sched: cls_flower: rework TCA_FLOWER_KEY_ENC_FLAGS usage

Message ID 20240703104600.455125-8-ast@fiberby.net (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series flower: rework TCA_FLOWER_KEY_ENC_FLAGS usage | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 886 this patch: 886
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 940 this patch: 940
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 5020 this patch: 5020
netdev/checkpatch warning WARNING: line length of 96 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-07-03--15-00 (tests: 663)

Commit Message

Asbjørn Sloth Tønnesen July 3, 2024, 10:45 a.m. UTC 
This patch changes how TCA_FLOWER_KEY_ENC_FLAGS is used, so that
it is used with TCA_FLOWER_KEY_FLAGS_* flags, in the same way as
TCA_FLOWER_KEY_FLAGS is currently used.

Where TCA_FLOWER_KEY_FLAGS uses {key,mask}->control.flags, then
TCA_FLOWER_KEY_ENC_FLAGS now uses {key,mask}->enc_control.flags,
therefore {key,mask}->enc_flags is now unused.

As the generic fl_set_key_flags/fl_dump_key_flags() is used with
encap set to true, then fl_{set,dump}_key_enc_flags() is removed.

This breaks unreleased userspace API (net-next since 2024-06-04).

Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
---
 include/uapi/linux/pkt_cls.h |  4 +--
 net/sched/cls_flower.c       | 56 +++++++++---------------------------
 2 files changed, 15 insertions(+), 45 deletions(-)
diff mbox series

Patch

diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
index 24795aad7651..38a0b1f3d196 100644
--- a/include/uapi/linux/pkt_cls.h
+++ b/include/uapi/linux/pkt_cls.h
@@ -554,8 +554,8 @@  enum {
 	TCA_FLOWER_KEY_SPI,		/* be32 */
 	TCA_FLOWER_KEY_SPI_MASK,	/* be32 */
 
-	TCA_FLOWER_KEY_ENC_FLAGS,	/* u32 */
-	TCA_FLOWER_KEY_ENC_FLAGS_MASK,	/* u32 */
+	TCA_FLOWER_KEY_ENC_FLAGS,	/* be32 */
+	TCA_FLOWER_KEY_ENC_FLAGS_MASK,	/* be32 */
 
 	__TCA_FLOWER_MAX,
 };
diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c
index 2a440f11fe1f..e2239ab01355 100644
--- a/net/sched/cls_flower.c
+++ b/net/sched/cls_flower.c
@@ -45,11 +45,11 @@ 
 		(TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT | \
 		TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST)
 
-#define TUNNEL_FLAGS_PRESENT (\
-	_BITUL(IP_TUNNEL_CSUM_BIT) |		\
-	_BITUL(IP_TUNNEL_DONT_FRAGMENT_BIT) |	\
-	_BITUL(IP_TUNNEL_OAM_BIT) |		\
-	_BITUL(IP_TUNNEL_CRIT_OPT_BIT))
+#define TCA_FLOWER_KEY_ENC_FLAGS_POLICY_MASK \
+		(TCA_FLOWER_KEY_FLAGS_TUNNEL_CSUM | \
+		TCA_FLOWER_KEY_FLAGS_TUNNEL_DONT_FRAGMENT | \
+		TCA_FLOWER_KEY_FLAGS_TUNNEL_OAM | \
+		TCA_FLOWER_KEY_FLAGS_TUNNEL_CRIT_OPT)
 
 struct fl_flow_key {
 	struct flow_dissector_key_meta meta;
@@ -745,10 +745,10 @@  static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
 	[TCA_FLOWER_KEY_SPI_MASK]	= { .type = NLA_U32 },
 	[TCA_FLOWER_L2_MISS]		= NLA_POLICY_MAX(NLA_U8, 1),
 	[TCA_FLOWER_KEY_CFM]		= { .type = NLA_NESTED },
-	[TCA_FLOWER_KEY_ENC_FLAGS]	= NLA_POLICY_MASK(NLA_U32,
-							  TUNNEL_FLAGS_PRESENT),
-	[TCA_FLOWER_KEY_ENC_FLAGS_MASK]	= NLA_POLICY_MASK(NLA_U32,
-							  TUNNEL_FLAGS_PRESENT),
+	[TCA_FLOWER_KEY_ENC_FLAGS]	= NLA_POLICY_MASK(NLA_BE32,
+							  TCA_FLOWER_KEY_ENC_FLAGS_POLICY_MASK),
+	[TCA_FLOWER_KEY_ENC_FLAGS_MASK]	= NLA_POLICY_MASK(NLA_BE32,
+							  TCA_FLOWER_KEY_ENC_FLAGS_POLICY_MASK),
 };
 
 static const struct nla_policy
@@ -1866,21 +1866,6 @@  static int fl_set_key_cfm(struct nlattr **tb,
 	return 0;
 }
 
-static int fl_set_key_enc_flags(struct nlattr **tb, u32 *flags_key,
-				u32 *flags_mask, struct netlink_ext_ack *extack)
-{
-	/* mask is mandatory for flags */
-	if (NL_REQ_ATTR_CHECK(extack, NULL, tb, TCA_FLOWER_KEY_ENC_FLAGS_MASK)) {
-		NL_SET_ERR_MSG(extack, "missing enc_flags mask");
-		return -EINVAL;
-	}
-
-	*flags_key = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_FLAGS]);
-	*flags_mask = nla_get_u32(tb[TCA_FLOWER_KEY_ENC_FLAGS_MASK]);
-
-	return 0;
-}
-
 static int fl_set_key(struct net *net, struct nlattr **tb,
 		      struct fl_flow_key *key, struct fl_flow_key *mask,
 		      struct netlink_ext_ack *extack)
@@ -2123,8 +2108,8 @@  static int fl_set_key(struct net *net, struct nlattr **tb,
 	}
 
 	if (tb[TCA_FLOWER_KEY_ENC_FLAGS])
-		ret = fl_set_key_enc_flags(tb, &key->enc_flags.flags,
-					   &mask->enc_flags.flags, extack);
+		ret = fl_set_key_flags(tb, true, &key->enc_control.flags,
+				       &mask->enc_control.flags, extack);
 
 	return ret;
 }
@@ -3381,22 +3366,6 @@  static int fl_dump_key_cfm(struct sk_buff *skb,
 	return err;
 }
 
-static int fl_dump_key_enc_flags(struct sk_buff *skb,
-				 struct flow_dissector_key_enc_flags *key,
-				 struct flow_dissector_key_enc_flags *mask)
-{
-	if (!memchr_inv(mask, 0, sizeof(*mask)))
-		return 0;
-
-	if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_FLAGS, key->flags))
-		return -EMSGSIZE;
-
-	if (nla_put_u32(skb, TCA_FLOWER_KEY_ENC_FLAGS_MASK, mask->flags))
-		return -EMSGSIZE;
-
-	return 0;
-}
-
 static int fl_dump_key_options(struct sk_buff *skb, int enc_opt_type,
 			       struct flow_dissector_key_enc_opts *enc_opts)
 {
@@ -3699,7 +3668,8 @@  static int fl_dump_key(struct sk_buff *skb, struct net *net,
 	if (fl_dump_key_cfm(skb, &key->cfm, &mask->cfm))
 		goto nla_put_failure;
 
-	if (fl_dump_key_enc_flags(skb, &key->enc_flags, &mask->enc_flags))
+	if (fl_dump_key_flags(skb, true, key->enc_control.flags,
+			      mask->enc_control.flags))
 		goto nla_put_failure;
 
 	return 0;