msm: ipa4: add IPv6CT support
IPAv4 HW presents new IPv6 connection tracking functionality.
This change adds SW support of this feature.
Change-Id: I7545af08f090405db80bbd8c10223ca7521080d9
Acked-by: Dmitry Kogan <dmitryk@qti.qualcomm.com>
Signed-off-by: Amir Levy <alevy@codeaurora.org>
diff --git a/drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal_nat_i.h b/drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal_nat_i.h
new file mode 100644
index 0000000..83bd0f5
--- /dev/null
+++ b/drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal_nat_i.h
@@ -0,0 +1,153 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _IPAHAL_NAT_I_H_
+#define _IPAHAL_NAT_I_H_
+
+#include <linux/msm_ipa.h>
+
+/* ----------------------- IPv4 NAT Table Entry -------------------------
+ *
+ * -----------------------------------------------------------------------
+ * | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ * -----------------------------------------------------------------------
+ * | Target IP(4B) | Private IP(4B) |
+ * -----------------------------------------------------------------------
+ * |Target Port(2B) |Private Port(2B)| Public Port(2B) | Next Index(2B) |
+ * -----------------------------------------------------------------------
+ * |Proto| TimeStamp(3B) | Flags(2B) |IP check sum Diff|
+ * |(1B) | |EN|Redirect|Resv | (2B) |
+ * -----------------------------------------------------------------------
+ * |TCP/UDP checksum| PDN info(2B) | SW Specific Parameters(4B) |
+ * | diff (2B) |Info|Resv |index table entry| prev index |
+ * -----------------------------------------------------------------------
+ */
+struct ipa_nat_hw_ipv4_entry {
+ /* An IP address can't be bit-field, because its address is used */
+ u32 private_ip;
+ u32 target_ip;
+
+ u32 next_index : 16;
+ u32 public_port : 16;
+ u32 private_port : 16;
+ u32 target_port : 16;
+ u32 ip_chksum : 16;
+
+ u32 rsvd1 : 14;
+ u32 redirect : 1;
+ u32 enable : 1;
+
+ u32 time_stamp : 24;
+ u32 protocol : 8;
+
+ u32 prev_index : 16;
+ u32 indx_tbl_entry : 16;
+
+ u32 rsvd2 : 12;
+ u32 pdn_index : 4; /* IPA 4.0 and greater */
+
+ u32 tcp_udp_chksum : 16;
+};
+
+/*--- IPV4 NAT Index Table Entry --
+ *---------------------------------
+ *| 3 | 2 | 1 | 0 |
+ *---------------------------------
+ *|next index(2B) |table entry(2B)|
+ *---------------------------------
+ */
+struct ipa_nat_hw_indx_entry {
+ u16 tbl_entry;
+ u16 next_index;
+};
+
+/**
+ * struct ipa_nat_hw_pdn_entry - IPA PDN config table entry
+ * @public_ip: the PDN's public ip
+ * @src_metadata: the PDN's metadata to be replaced for source NAT
+ * @dst_metadata: the PDN's metadata to be replaced for destination NAT
+ * @resrvd: reserved field
+ * ---------------------------------
+ * | 3 | 2 | 1 | 0 |
+ * ---------------------------------
+ * | public_ip (4B) |
+ * ---------------------------------
+ * | src_metadata (4B) |
+ * ---------------------------------
+ * | dst_metadata (4B) |
+ * ---------------------------------
+ * | resrvd (4B) |
+ * ---------------------------------
+ */
+struct ipa_nat_hw_pdn_entry {
+ u32 public_ip;
+ u32 src_metadata;
+ u32 dst_metadata;
+ u32 resrvd;
+};
+
+/*------------------------- IPV6CT Table Entry ------------------------------
+ *-----------------------------------------------------------------------------
+ *| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
+ *-----------------------------------------------------------------------------
+ *| Outbound Src IPv6 Address (8 LSB Bytes) |
+ *-----------------------------------------------------------------------------
+ *| Outbound Src IPv6 Address (8 MSB Bytes) |
+ *-----------------------------------------------------------------------------
+ *| Outbound Dest IPv6 Address (8 LSB Bytes) |
+ *-----------------------------------------------------------------------------
+ *| Outbound Dest IPv6 Address (8 MSB Bytes) |
+ *-----------------------------------------------------------------------------
+ *|Protocol| TimeStamp (3B) | Flags (2B) |Reserved (2B) |
+ *| (1B) | |Enable|Redirect|Resv | |
+ *-----------------------------------------------------------------------------
+ *|Reserved|Direction(1B)|Src Port(2B)| Dest Port (2B) |Next Index(2B)|
+ *| (1B) |IN|OUT|Resv | | | |
+ *-----------------------------------------------------------------------------
+ *| SW Specific Parameters(4B) | Reserved (4B) |
+ *| Prev Index (2B) |Reserved(2B)| |
+ *-----------------------------------------------------------------------------
+ *| Reserved (8B) |
+ *-----------------------------------------------------------------------------
+ */
+struct ipa_nat_hw_ipv6ct_entry {
+ /* An IP address can't be bit-field, because its address is used */
+ u64 src_ipv6_lsb;
+ u64 src_ipv6_msb;
+ u64 dest_ipv6_lsb;
+ u64 dest_ipv6_msb;
+
+ u64 rsvd1 : 30;
+ u64 redirect : 1;
+ u64 enable : 1;
+
+ u64 time_stamp : 24;
+ u64 protocol : 8;
+
+ u64 next_index : 16;
+ u64 dest_port : 16;
+ u64 src_port : 16;
+ u64 rsvd2 : 6;
+ u64 out_allowed : 1;
+ u64 in_allowed : 1;
+ u64 rsvd3 : 8;
+
+ u64 rsvd4 : 48;
+ u64 prev_index : 16;
+
+ u64 rsvd5 : 64;
+};
+
+int ipahal_nat_init(enum ipa_hw_type ipa_hw_type);
+
+#endif /* _IPAHAL_NAT_I_H_ */
+