/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Linux Packet (skb) interface
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*
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* Copyright (C) 1999-2019, Broadcom.
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: linux_pkt.h 701430 2017-05-25 00:03:02Z $
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*/
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#ifndef _linux_pkt_h_
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#define _linux_pkt_h_
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#include <typedefs.h>
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#ifdef __ARM_ARCH_7A__
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#define PKT_HEADROOM_DEFAULT NET_SKB_PAD /**< NET_SKB_PAD is defined in a linux kernel header */
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#else
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#define PKT_HEADROOM_DEFAULT 16
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#endif /* __ARM_ARCH_7A__ */
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#ifdef BCMDRIVER
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/*
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* BINOSL selects the slightly slower function-call-based binary compatible osl.
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* Macros expand to calls to functions defined in linux_osl.c .
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*/
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/* Because the non BINOSL implemenation of the PKT OSL routines are macros (for
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* performance reasons), we need the Linux headers.
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*/
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#include <linuxver.h>
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/* packet primitives */
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#ifdef BCM_OBJECT_TRACE
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#define PKTGET(osh, len, send) linux_pktget((osh), (len), __LINE__, __FUNCTION__)
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#define PKTDUP(osh, skb) osl_pktdup((osh), (skb), __LINE__, __FUNCTION__)
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#else
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#define PKTGET(osh, len, send) linux_pktget((osh), (len))
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#define PKTDUP(osh, skb) osl_pktdup((osh), (skb))
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#endif /* BCM_OBJECT_TRACE */
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#define PKTLIST_DUMP(osh, buf) BCM_REFERENCE(osh)
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#define PKTDBG_TRACE(osh, pkt, bit) BCM_REFERENCE(osh)
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#if defined(BCM_OBJECT_TRACE)
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#define PKTFREE(osh, skb, send) linux_pktfree((osh), (skb), (send), __LINE__, __FUNCTION__)
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#else
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#define PKTFREE(osh, skb, send) linux_pktfree((osh), (skb), (send))
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#endif /* BCM_OBJECT_TRACE */
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#ifdef CONFIG_DHD_USE_STATIC_BUF
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#define PKTGET_STATIC(osh, len, send) osl_pktget_static((osh), (len))
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#define PKTFREE_STATIC(osh, skb, send) osl_pktfree_static((osh), (skb), (send))
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#else
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#define PKTGET_STATIC PKTGET
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#define PKTFREE_STATIC PKTFREE
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#endif /* CONFIG_DHD_USE_STATIC_BUF */
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#define PKTDATA(osh, skb) ({BCM_REFERENCE(osh); (((struct sk_buff*)(skb))->data);})
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#define PKTLEN(osh, skb) ({BCM_REFERENCE(osh); (((struct sk_buff*)(skb))->len);})
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#define PKTHEAD(osh, skb) ({BCM_REFERENCE(osh); (((struct sk_buff*)(skb))->head);})
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#define PKTSETHEAD(osh, skb, h) ({BCM_REFERENCE(osh); \
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(((struct sk_buff *)(skb))->head = (h));})
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#define PKTHEADROOM(osh, skb) (PKTDATA(osh, skb)-(((struct sk_buff*)(skb))->head))
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#define PKTEXPHEADROOM(osh, skb, b) \
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({ \
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BCM_REFERENCE(osh); \
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skb_realloc_headroom((struct sk_buff*)(skb), (b)); \
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})
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#define PKTTAILROOM(osh, skb) \
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({ \
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BCM_REFERENCE(osh); \
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skb_tailroom((struct sk_buff*)(skb)); \
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})
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#define PKTPADTAILROOM(osh, skb, padlen) \
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({ \
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BCM_REFERENCE(osh); \
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skb_pad((struct sk_buff*)(skb), (padlen)); \
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})
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#define PKTNEXT(osh, skb) ({BCM_REFERENCE(osh); (((struct sk_buff*)(skb))->next);})
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#define PKTSETNEXT(osh, skb, x) \
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({ \
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BCM_REFERENCE(osh); \
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(((struct sk_buff*)(skb))->next = (struct sk_buff*)(x)); \
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})
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#define PKTSETLEN(osh, skb, len) \
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({ \
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BCM_REFERENCE(osh); \
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__skb_trim((struct sk_buff*)(skb), (len)); \
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})
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#define PKTPUSH(osh, skb, bytes) \
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({ \
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BCM_REFERENCE(osh); \
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skb_push((struct sk_buff*)(skb), (bytes)); \
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})
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#define PKTPULL(osh, skb, bytes) \
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({ \
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BCM_REFERENCE(osh); \
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skb_pull((struct sk_buff*)(skb), (bytes)); \
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})
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#define PKTTAG(skb) ((void*)(((struct sk_buff*)(skb))->cb))
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#define PKTSETPOOL(osh, skb, x, y) BCM_REFERENCE(osh)
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#define PKTPOOL(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb); FALSE;})
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#define PKTFREELIST(skb) PKTLINK(skb)
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#define PKTSETFREELIST(skb, x) PKTSETLINK((skb), (x))
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#define PKTPTR(skb) (skb)
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#define PKTID(skb) ({BCM_REFERENCE(skb); 0;})
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#define PKTSETID(skb, id) ({BCM_REFERENCE(skb); BCM_REFERENCE(id);})
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#define PKTSHRINK(osh, m) ({BCM_REFERENCE(osh); m;})
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)) && defined(TSQ_MULTIPLIER)
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#define PKTORPHAN(skb, tsq) osl_pkt_orphan_partial(skb, tsq)
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extern void osl_pkt_orphan_partial(struct sk_buff *skb, int tsq);
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#else
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#define PKTORPHAN(skb, tsq) ({BCM_REFERENCE(skb); 0;})
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#endif /* LINUX VERSION >= 3.6 */
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#define PKTSETFAST(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTCLRFAST(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTISFAST(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb); FALSE;})
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#define PKTSETCTF(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTCLRCTF(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTISCTF(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb); FALSE;})
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#define PKTSETSKIPCT(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTCLRSKIPCT(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTSKIPCT(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define CTF_MARK(m) ({BCM_REFERENCE(m); 0;})
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#define PKTFRAGLEN(osh, lb, ix) (0)
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#define PKTSETFRAGLEN(osh, lb, ix, len) BCM_REFERENCE(osh)
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#define PKTSETFWDERBUF(osh, skb) ({ BCM_REFERENCE(osh); BCM_REFERENCE(skb); })
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#define PKTCLRFWDERBUF(osh, skb) ({ BCM_REFERENCE(osh); BCM_REFERENCE(skb); })
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#define PKTISFWDERBUF(osh, skb) ({ BCM_REFERENCE(osh); BCM_REFERENCE(skb); FALSE;})
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#define PKTSETTOBR(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTCLRTOBR(osh, skb) ({BCM_REFERENCE(osh); BCM_REFERENCE(skb);})
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#define PKTISTOBR(skb) ({BCM_REFERENCE(skb); FALSE;})
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#ifdef BCMFA
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#ifdef BCMFA_HW_HASH
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#define PKTSETFAHIDX(skb, idx) (((struct sk_buff*)(skb))->napt_idx = idx)
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#else
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#define PKTSETFAHIDX(skb, idx) ({BCM_REFERENCE(skb); BCM_REFERENCE(idx);})
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#endif /* BCMFA_SW_HASH */
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#define PKTGETFAHIDX(skb) (((struct sk_buff*)(skb))->napt_idx)
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#define PKTSETFADEV(skb, imp) (((struct sk_buff*)(skb))->dev = imp)
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#define PKTSETRXDEV(skb) (((struct sk_buff*)(skb))->rxdev = ((struct sk_buff*)(skb))->dev)
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#define AUX_TCP_FIN_RST (1 << 0)
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#define AUX_FREED (1 << 1)
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#define PKTSETFAAUX(skb) (((struct sk_buff*)(skb))->napt_flags |= AUX_TCP_FIN_RST)
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#define PKTCLRFAAUX(skb) (((struct sk_buff*)(skb))->napt_flags &= (~AUX_TCP_FIN_RST))
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#define PKTISFAAUX(skb) (((struct sk_buff*)(skb))->napt_flags & AUX_TCP_FIN_RST)
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#define PKTSETFAFREED(skb) (((struct sk_buff*)(skb))->napt_flags |= AUX_FREED)
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#define PKTCLRFAFREED(skb) (((struct sk_buff*)(skb))->napt_flags &= (~AUX_FREED))
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#define PKTISFAFREED(skb) (((struct sk_buff*)(skb))->napt_flags & AUX_FREED)
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#define PKTISFABRIDGED(skb) PKTISFAAUX(skb)
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#else
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#define PKTISFAAUX(skb) ({BCM_REFERENCE(skb); FALSE;})
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#define PKTISFABRIDGED(skb) ({BCM_REFERENCE(skb); FALSE;})
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#define PKTISFAFREED(skb) ({BCM_REFERENCE(skb); FALSE;})
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#define PKTCLRFAAUX(skb) BCM_REFERENCE(skb)
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#define PKTSETFAFREED(skb) BCM_REFERENCE(skb)
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#define PKTCLRFAFREED(skb) BCM_REFERENCE(skb)
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#endif /* BCMFA */
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#if defined(BCM_OBJECT_TRACE)
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extern void linux_pktfree(osl_t *osh, void *skb, bool send, int line, const char *caller);
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#else
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extern void linux_pktfree(osl_t *osh, void *skb, bool send);
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#endif /* BCM_OBJECT_TRACE */
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extern void *osl_pktget_static(osl_t *osh, uint len);
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extern void osl_pktfree_static(osl_t *osh, void *skb, bool send);
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extern void osl_pktclone(osl_t *osh, void **pkt);
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#ifdef BCM_OBJECT_TRACE
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extern void *linux_pktget(osl_t *osh, uint len, int line, const char *caller);
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extern void *osl_pktdup(osl_t *osh, void *skb, int line, const char *caller);
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#else
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extern void *linux_pktget(osl_t *osh, uint len);
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extern void *osl_pktdup(osl_t *osh, void *skb);
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#endif /* BCM_OBJECT_TRACE */
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extern void *osl_pkt_frmnative(osl_t *osh, void *skb);
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extern struct sk_buff *osl_pkt_tonative(osl_t *osh, void *pkt);
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#define PKTFRMNATIVE(osh, skb) osl_pkt_frmnative(((osl_t *)osh), (struct sk_buff*)(skb))
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#define PKTTONATIVE(osh, pkt) osl_pkt_tonative((osl_t *)(osh), (pkt))
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#define PKTLINK(skb) (((struct sk_buff*)(skb))->prev)
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#define PKTSETLINK(skb, x) (((struct sk_buff*)(skb))->prev = (struct sk_buff*)(x))
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#define PKTPRIO(skb) (((struct sk_buff*)(skb))->priority)
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#define PKTSETPRIO(skb, x) (((struct sk_buff*)(skb))->priority = (x))
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#define PKTSUMNEEDED(skb) (((struct sk_buff*)(skb))->ip_summed == CHECKSUM_HW)
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#define PKTSETSUMGOOD(skb, x) (((struct sk_buff*)(skb))->ip_summed = \
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((x) ? CHECKSUM_UNNECESSARY : CHECKSUM_NONE))
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/* PKTSETSUMNEEDED and PKTSUMGOOD are not possible because skb->ip_summed is overloaded */
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#define PKTSHARED(skb) (((struct sk_buff*)(skb))->cloned)
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#ifdef CONFIG_NF_CONNTRACK_MARK
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
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#define PKTMARK(p) (((struct sk_buff *)(p))->mark)
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#define PKTSETMARK(p, m) ((struct sk_buff *)(p))->mark = (m)
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#else /* !2.6.0 */
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#define PKTMARK(p) (((struct sk_buff *)(p))->nfmark)
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#define PKTSETMARK(p, m) ((struct sk_buff *)(p))->nfmark = (m)
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#endif /* 2.6.0 */
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#else /* CONFIG_NF_CONNTRACK_MARK */
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#define PKTMARK(p) 0
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#define PKTSETMARK(p, m)
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#endif /* CONFIG_NF_CONNTRACK_MARK */
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#define PKTALLOCED(osh) osl_pktalloced(osh)
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extern uint osl_pktalloced(osl_t *osh);
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#endif /* BCMDRIVER */
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#endif /* _linux_pkt_h_ */
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