linux-kernel - [PATCH net-next 5/8] net: ipa: define remaining IPA status field values

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Date:   Wed, 25 Jan 2023 14:45:42 -0600
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     caleb.connolly@...aro.org, mka@...omium.org, evgreen@...omium.org,
        andersson@...nel.org, quic_cpratapa@...cinc.com,
        quic_avuyyuru@...cinc.com, quic_jponduru@...cinc.com,
        quic_subashab@...cinc.com, elder@...nel.org,
        netdev@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 5/8] net: ipa: define remaining IPA status field values

Define the remaining values for opcode and exception fields in the
IPA packet status structure.  Most of these values are powers-of-2,
suggesting they are meant to be used as bitmasks, but that is not
the case.  Add comments to be clear about this, and express the
values in decimal format.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_endpoint.c | 31 ++++++++++++++++++++++---------
 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 178934f131be5..ee3c29b1efea9 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -34,18 +34,31 @@
 
 #define IPA_ENDPOINT_RESET_AGGR_RETRY_MAX	3
 
-/** enum ipa_status_opcode - status element opcode hardware values */
-enum ipa_status_opcode {
-	IPA_STATUS_OPCODE_PACKET		= 0x01,
-	IPA_STATUS_OPCODE_DROPPED_PACKET	= 0x04,
-	IPA_STATUS_OPCODE_SUSPENDED_PACKET	= 0x08,
-	IPA_STATUS_OPCODE_PACKET_2ND_PASS	= 0x40,
+/** enum ipa_status_opcode - IPA status opcode field hardware values */
+enum ipa_status_opcode {				/* *Not* a bitmask */
+	IPA_STATUS_OPCODE_PACKET		= 1,
+	IPA_STATUS_OPCODE_NEW_RULE_PACKET	= 2,
+	IPA_STATUS_OPCODE_DROPPED_PACKET	= 4,
+	IPA_STATUS_OPCODE_SUSPENDED_PACKET	= 8,
+	IPA_STATUS_OPCODE_LOG			= 16,
+	IPA_STATUS_OPCODE_DCMP			= 32,
+	IPA_STATUS_OPCODE_PACKET_2ND_PASS	= 64,
 };
 
-/** enum ipa_status_exception - status element exception type */
-enum ipa_status_exception {
+/** enum ipa_status_exception - IPA status exception field hardware values */
+enum ipa_status_exception {				/* *Not* a bitmask */
 	/* 0 means no exception */
-	IPA_STATUS_EXCEPTION_DEAGGR		= 0x01,
+	IPA_STATUS_EXCEPTION_DEAGGR		= 1,
+	IPA_STATUS_EXCEPTION_IPTYPE		= 4,
+	IPA_STATUS_EXCEPTION_PACKET_LENGTH	= 8,
+	IPA_STATUS_EXCEPTION_FRAG_RULE_MISS	= 16,
+	IPA_STATUS_EXCEPTION_SW_FILTER		= 32,
+	IPA_STATUS_EXCEPTION_NAT		= 64,		/* IPv4 */
+	IPA_STATUS_EXCEPTION_IPV6_CONN_TRACK	= 64,		/* IPv6 */
+	IPA_STATUS_EXCEPTION_UC			= 128,
+	IPA_STATUS_EXCEPTION_INVALID_ENDPOINT	= 129,
+	IPA_STATUS_EXCEPTION_HEADER_INSERT	= 136,
+	IPA_STATUS_EXCEPTION_CHEKCSUM		= 229,
 };
 
 /** enum ipa_status_mask - IPA status mask field bitmask hardware values */
-- 
2.34.1