diff mbox series

[net-next,v11,2/5] net/sched: act_api: increase action kind string length

Message ID 20240223131728.116717-3-jhs@mojatatu.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series Introducing P4TC (series 1) | 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: 5046 this patch: 5046
netdev/build_tools success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 1071 this patch: 1071
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: 5348 this patch: 5348
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 45 lines checked
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

Commit Message

Jamal Hadi Salim Feb. 23, 2024, 1:17 p.m. UTC 
Increase action kind string length from IFNAMSIZ to 64

The new P4 actions, created via templates, will have longer names
of format: "pipeline_name/act_name". IFNAMSIZ is currently 16 and is most
of the times undersized for the above format.
So, to conform to this new format, we increase the maximum name length
and change its definition from IFNAMSIZ to ACTNAMSIZ to account for this
extra string (pipeline name) and the '/' character.

Co-developed-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Co-developed-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
---
 include/net/act_api.h        | 2 +-
 include/uapi/linux/pkt_cls.h | 1 +
 net/sched/act_api.c          | 8 ++++----
 3 files changed, 6 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/include/net/act_api.h b/include/net/act_api.h
index f22be14bb..c839ff57c 100644
--- a/include/net/act_api.h
+++ b/include/net/act_api.h
@@ -106,7 +106,7 @@  typedef void (*tc_action_priv_destructor)(void *priv);
 struct tc_action_ops {
 	struct list_head head;
 	struct list_head p4_head;
-	char    kind[IFNAMSIZ];
+	char    kind[ACTNAMSIZ];
 	enum tca_id  id; /* identifier should match kind */
 	unsigned int	net_id;
 	size_t	size;
diff --git a/include/uapi/linux/pkt_cls.h b/include/uapi/linux/pkt_cls.h
index ea277039f..dd313a727 100644
--- a/include/uapi/linux/pkt_cls.h
+++ b/include/uapi/linux/pkt_cls.h
@@ -6,6 +6,7 @@ 
 #include <linux/pkt_sched.h>
 
 #define TC_COOKIE_MAX_SIZE 16
+#define ACTNAMSIZ 64
 
 /* Action attributes */
 enum {
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 23ef394f2..ce10d2c6e 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -476,7 +476,7 @@  static size_t tcf_action_shared_attrs_size(const struct tc_action *act)
 	rcu_read_unlock();
 
 	return  nla_total_size(0) /* action number nested */
-		+ nla_total_size(IFNAMSIZ) /* TCA_ACT_KIND */
+		+ nla_total_size(ACTNAMSIZ) /* TCA_ACT_KIND */
 		+ cookie_len /* TCA_ACT_COOKIE */
 		+ nla_total_size(sizeof(struct nla_bitfield32)) /* TCA_ACT_HW_STATS */
 		+ nla_total_size(0) /* TCA_ACT_STATS nested */
@@ -1424,7 +1424,7 @@  tc_action_load_ops(struct net *net, struct nlattr *nla,
 	bool police = flags & TCA_ACT_FLAGS_POLICE;
 	struct nlattr *tb[TCA_ACT_MAX + 1];
 	struct tc_action_ops *a_o;
-	char act_name[IFNAMSIZ];
+	char act_name[ACTNAMSIZ];
 	struct nlattr *kind;
 	int err;
 
@@ -1439,12 +1439,12 @@  tc_action_load_ops(struct net *net, struct nlattr *nla,
 			NL_SET_ERR_MSG(extack, "TC action kind must be specified");
 			return ERR_PTR(err);
 		}
-		if (nla_strscpy(act_name, kind, IFNAMSIZ) < 0) {
+		if (nla_strscpy(act_name, kind, ACTNAMSIZ) < 0) {
 			NL_SET_ERR_MSG(extack, "TC action name too long");
 			return ERR_PTR(err);
 		}
 	} else {
-		if (strscpy(act_name, "police", IFNAMSIZ) < 0) {
+		if (strscpy(act_name, "police", ACTNAMSIZ) < 0) {
 			NL_SET_ERR_MSG(extack, "TC action name too long");
 			return ERR_PTR(-EINVAL);
 		}