diff mbox series

[net-next,v2,06/12] net: dsa: tag_sja1105: refactor skb->dev assignment to dsa_tag_8021q_find_user()

Message ID 20240619205220.965844-7-paweldembicki@gmail.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series net: dsa: vsc73xx: Implement VLAN operations | 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: 845 this patch: 845
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 849 this patch: 849
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: 849 this patch: 849
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 71 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
netdev/contest success net-next-2024-06-20--03-00 (tests: 659)

Commit Message

Pawel Dembicki June 19, 2024, 8:52 p.m. UTC 
From: Vladimir Oltean <vladimir.oltean@nxp.com>

A new tagging protocol implementation based on tag_8021q is on the
horizon, and it appears that it also has to open-code the complicated
logic of finding a source port based on a VLAN header.

Create a single dsa_tag_8021q_find_user() and make sja1105 call it.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
---
v2,v1:
  - resend only
---
Before patch series split:
https://patchwork.kernel.org/project/netdevbpf/list/?series=841034&state=%2A&archive=both
v8:
  - resend only
v7:
  - added 'Reviewed-by' only
v6, v5:
  - resend only
v4:
  - introduce patch and change from master to conduit and slave to user
---
 net/dsa/tag_8021q.c   | 19 ++++++++++++++++---
 net/dsa/tag_8021q.h   |  5 +++--
 net/dsa/tag_sja1105.c | 17 +++++------------
 3 files changed, 24 insertions(+), 17 deletions(-)
diff mbox series

Patch

diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c
index 332b0ae02645..454d36c84671 100644
--- a/net/dsa/tag_8021q.c
+++ b/net/dsa/tag_8021q.c
@@ -468,8 +468,8 @@  struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
 }
 EXPORT_SYMBOL_GPL(dsa_8021q_xmit);
 
-struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *conduit,
-						   int vbid)
+static struct net_device *
+dsa_tag_8021q_find_port_by_vbid(struct net_device *conduit, int vbid)
 {
 	struct dsa_port *cpu_dp = conduit->dsa_ptr;
 	struct dsa_switch_tree *dst = cpu_dp->dst;
@@ -495,7 +495,20 @@  struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *conduit,
 
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(dsa_tag_8021q_find_port_by_vbid);
+
+struct net_device *dsa_tag_8021q_find_user(struct net_device *conduit,
+					   int source_port, int switch_id,
+					   int vid, int vbid)
+{
+	/* Always prefer precise source port information, if available */
+	if (source_port != -1 && switch_id != -1)
+		return dsa_conduit_find_user(conduit, switch_id, source_port);
+	else if (vbid >= 1)
+		return dsa_tag_8021q_find_port_by_vbid(conduit, vbid);
+
+	return dsa_find_designated_bridge_port_by_vid(conduit, vid);
+}
+EXPORT_SYMBOL_GPL(dsa_tag_8021q_find_user);
 
 /**
  * dsa_8021q_rcv - Decode source information from tag_8021q header
diff --git a/net/dsa/tag_8021q.h b/net/dsa/tag_8021q.h
index 0c6671d7c1c2..27b8906f99ec 100644
--- a/net/dsa/tag_8021q.h
+++ b/net/dsa/tag_8021q.h
@@ -16,8 +16,9 @@  struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
 void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id,
 		   int *vbid, int *vid);
 
-struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *conduit,
-						   int vbid);
+struct net_device *dsa_tag_8021q_find_user(struct net_device *conduit,
+					   int source_port, int switch_id,
+					   int vid, int vbid);
 
 int dsa_switch_tag_8021q_vlan_add(struct dsa_switch *ds,
 				  struct dsa_notifier_tag_8021q_vlan_info *info);
diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c
index 35a6346549f2..3e902af7eea6 100644
--- a/net/dsa/tag_sja1105.c
+++ b/net/dsa/tag_sja1105.c
@@ -509,12 +509,8 @@  static struct sk_buff *sja1105_rcv(struct sk_buff *skb,
 		 */
 		return NULL;
 
-	if (source_port != -1 && switch_id != -1)
-		skb->dev = dsa_conduit_find_user(netdev, switch_id, source_port);
-	else if (vbid >= 1)
-		skb->dev = dsa_tag_8021q_find_port_by_vbid(netdev, vbid);
-	else
-		skb->dev = dsa_find_designated_bridge_port_by_vid(netdev, vid);
+	skb->dev = dsa_tag_8021q_find_user(netdev, source_port, switch_id,
+					   vid, vbid);
 	if (!skb->dev) {
 		netdev_warn(netdev, "Couldn't decode source port\n");
 		return NULL;
@@ -652,12 +648,9 @@  static struct sk_buff *sja1110_rcv(struct sk_buff *skb,
 	if (likely(sja1105_skb_has_tag_8021q(skb)))
 		dsa_8021q_rcv(skb, &source_port, &switch_id, &vbid, &vid);
 
-	if (source_port != -1 && switch_id != -1)
-		skb->dev = dsa_conduit_find_user(netdev, switch_id, source_port);
-	else if (vbid >= 1)
-		skb->dev = dsa_tag_8021q_find_port_by_vbid(netdev, vbid);
-	else
-		skb->dev = dsa_find_designated_bridge_port_by_vid(netdev, vid);
+	skb->dev = dsa_tag_8021q_find_user(netdev, source_port, switch_id,
+					   vid, vbid);
+
 	if (!skb->dev) {
 		netdev_warn(netdev, "Couldn't decode source port\n");
 		return NULL;