android_kernel_samsung_sm8650-modules/offload/rmnet_offload_main.c

/* Copyright (c) 2018-2020, 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.
 */

#include <linux/compiler.h>
#include <linux/rcupdate.h>
#include <linux/jhash.h>
#include <linux/spinlock.h>
#include "rmnet_descriptor.h"
#include "rmnet_handlers.h"
#include "rmnet_map.h"
#include "rmnet_offload_main.h"
#include "rmnet_offload_state.h"
#include "rmnet_offload_engine.h"
#include "rmnet_offload_stats.h"
static const char*DATARMNET9a36480134[]__always_unused={
"\x49\x37\x32\x31\x62\x64\x36\x39\x35\x32\x31\x66\x65\x34\x61\x61\x38\x64\x61\x65\x62\x65\x66\x62\x32\x38\x30\x64\x38\x64\x31\x35\x30\x39\x66\x39\x31\x65\x36\x37\x33"
,};static DEFINE_SPINLOCK(DATARMNET56235f0bb4);static u32 DATARMNETf6597f07e9(
struct DATARMNETadd6ff90d0*DATARMNET809d788099){__be32 DATARMNET51e56c6582[
(0x5b9+1700-0xc52)];u32 DATARMNETb65409e3b5;__be16 DATARMNETe048999b85=
(0xb0c+7037-0x2689),DATARMNET6b15e99cb9=(0x6dc+1549-0xce9);if(
DATARMNET809d788099->DATARMNET072708db10==DATARMNETb02d95e937||
DATARMNET809d788099->DATARMNET072708db10==DATARMNET70889e5696){struct 
DATARMNET2d87db499d*DATARMNET5829e80183=DATARMNET809d788099->DATARMNETc51cdf696b
;DATARMNETe048999b85=DATARMNET5829e80183->DATARMNETaad9b0a864;
DATARMNET6b15e99cb9=DATARMNET5829e80183->DATARMNETd751c12d13;}if(
DATARMNET809d788099->DATARMNET9f5b2909c8==(0x10f3+703-0x13ae)){struct 
DATARMNETf61a39bce9*DATARMNETf7a5ea0c29=DATARMNET809d788099->DATARMNET574a565f78
;DATARMNET51e56c6582[(0x167b+1973-0x1e30)]=DATARMNETf7a5ea0c29->
DATARMNET799b2a47a5;DATARMNET51e56c6582[(0xcb3+6554-0x264c)]=DATARMNETf7a5ea0c29
->DATARMNET7c6ed51964;DATARMNET51e56c6582[(0x1c51+2147-0x24b2)]=
DATARMNETf7a5ea0c29->DATARMNET065f40367c;DATARMNET51e56c6582[
(0x1092+2502-0x1a55)]=DATARMNET6b15e99cb9;DATARMNET51e56c6582[
(0x1300+1818-0x1a16)]=DATARMNETe048999b85;DATARMNETb65409e3b5=
(0x1ac+8562-0x2319);}else{struct DATARMNETfab66e680d*DATARMNET6bd3c60da4=
DATARMNET809d788099->DATARMNET1dab0af728;memcpy(&DATARMNET51e56c6582[
(0x11d+5240-0x1595)],&DATARMNET6bd3c60da4->DATARMNET818f335f71[
(0x8dd+4882-0x1bef)],sizeof(DATARMNET6bd3c60da4->DATARMNET818f335f71));memcpy(&
DATARMNET51e56c6582[(0xbbd+5094-0x1f9e)],&DATARMNET6bd3c60da4->
DATARMNET0f6f3a8868[(0x2fb+6889-0x1de4)],sizeof(DATARMNET6bd3c60da4->
DATARMNET818f335f71));DATARMNET51e56c6582[(0x1438+742-0x1716)]=
DATARMNET6bd3c60da4->DATARMNETa2be9ad0de;DATARMNET51e56c6582[(0x411+5381-0x190d)
]=DATARMNET6b15e99cb9;DATARMNET51e56c6582[(0x1e1+3364-0xefb)]=
DATARMNETe048999b85;DATARMNETb65409e3b5=(0x59b+5231-0x19ff);}return jhash2(
DATARMNET51e56c6582,DATARMNETb65409e3b5,(0xeea+3831-0x1de1));}static void 
DATARMNETee281dc788(u32 DATARMNET0eb96739bf){u32 DATARMNETc7bc65a2a5;if(
DATARMNET0eb96739bf>50000)DATARMNETc7bc65a2a5=DATARMNETd096b7b9cd;else if(
DATARMNET0eb96739bf>30000)DATARMNETc7bc65a2a5=DATARMNET1e2ecb33d1;else if(
DATARMNET0eb96739bf>23000)DATARMNETc7bc65a2a5=DATARMNET3b1a812e5c;else if(
DATARMNET0eb96739bf>14500)DATARMNETc7bc65a2a5=DATARMNET64bf04bc47;else if(
DATARMNET0eb96739bf>(0x22ed+7824-0x2625))DATARMNETc7bc65a2a5=DATARMNET7069e38e48
;else if(DATARMNET0eb96739bf>(0x1fd3+2486-0x2411))DATARMNETc7bc65a2a5=
DATARMNETc005f7933f;else DATARMNETc7bc65a2a5=DATARMNET2eb3321438;
DATARMNET5d24865423(DATARMNETc7bc65a2a5);}static bool DATARMNET00b745f472(struct
 rmnet_frag_descriptor*DATARMNETa41162aa9b,struct DATARMNETadd6ff90d0*
DATARMNET809d788099){u8*DATARMNET218e3007fa;u16 DATARMNET0eb96739bf;u16 
DATARMNET0d3dcef7b0;if(DATARMNETa41162aa9b->hdrs_valid){DATARMNET809d788099->
DATARMNET9f5b2909c8=DATARMNETa41162aa9b->ip_proto;DATARMNET809d788099->
DATARMNETa7eaea0d00=DATARMNETa41162aa9b->ip_len;DATARMNET809d788099->
DATARMNET072708db10=DATARMNETa41162aa9b->trans_proto;DATARMNET809d788099->
DATARMNETfeb7c81ac7=DATARMNETa41162aa9b->trans_len;DATARMNET809d788099->
DATARMNET574a565f78=(struct DATARMNETf61a39bce9*)DATARMNETa41162aa9b->hdr_ptr;
DATARMNET809d788099->DATARMNET7ff34eacb7=(struct DATARMNET1bffb1c388*)(
DATARMNETa41162aa9b->hdr_ptr+DATARMNETa41162aa9b->ip_len);DATARMNET809d788099->
DATARMNET68ad0738e2=DATARMNETf6597f07e9(DATARMNET809d788099);DATARMNET809d788099
->DATARMNET5671455f38=skb_frag_size(&DATARMNETa41162aa9b->frag);if(
DATARMNETa41162aa9b->hdr_ptr==rmnet_frag_data_ptr(DATARMNETa41162aa9b))
DATARMNET809d788099->DATARMNET5671455f38-=DATARMNETa41162aa9b->ip_len+
DATARMNETa41162aa9b->trans_len;DATARMNET809d788099->DATARMNET798fafaf36=
DATARMNETa41162aa9b;return false;}DATARMNET218e3007fa=rmnet_frag_data_ptr(
DATARMNETa41162aa9b);DATARMNET0eb96739bf=skb_frag_size(&DATARMNETa41162aa9b->
frag);DATARMNET809d788099->DATARMNET2f3cb41448=true;DATARMNET809d788099->
DATARMNET9f5b2909c8=(DATARMNET218e3007fa[(0x2a+5400-0x1542)]&
(0x1881+3821-0x267e))>>(0x16d+792-0x481);if(DATARMNET809d788099->
DATARMNET9f5b2909c8==(0x73a+2289-0x1027)){struct DATARMNETf61a39bce9*
DATARMNETf7a5ea0c29;DATARMNETf7a5ea0c29=(struct DATARMNETf61a39bce9*)
DATARMNET218e3007fa;DATARMNET809d788099->DATARMNET574a565f78=DATARMNETf7a5ea0c29
;DATARMNET809d788099->DATARMNETa7eaea0d00=DATARMNETf7a5ea0c29->
DATARMNET422c25939d*(0x1235+3369-0x1f5a);DATARMNET809d788099->
DATARMNET072708db10=DATARMNETf7a5ea0c29->DATARMNET065f40367c;if(
DATARMNETf7a5ea0c29->DATARMNETa803e4f68b&htons(16383)){DATARMNET5d24865423(
DATARMNET433e163a43);goto DATARMNET02a8afcd23;}DATARMNET0d3dcef7b0=ntohs(
DATARMNETf7a5ea0c29->DATARMNETefd12e7a2b);DATARMNET809d788099->
DATARMNET6cc77c7b3f=DATARMNET0d3dcef7b0!=DATARMNET0eb96739bf;}else if(
DATARMNET809d788099->DATARMNET9f5b2909c8==(0x79a+292-0x8b8)){struct 
DATARMNETfab66e680d*DATARMNET6bd3c60da4;int DATARMNET5fc606c6dc;__be16 
DATARMNETe95a0a73b9;u8 DATARMNETcb5c3d9e39;DATARMNET6bd3c60da4=(struct 
DATARMNETfab66e680d*)DATARMNET218e3007fa;DATARMNET809d788099->
DATARMNET1dab0af728=DATARMNET6bd3c60da4;DATARMNETcb5c3d9e39=DATARMNET6bd3c60da4
->DATARMNETa2be9ad0de;DATARMNET5fc606c6dc=rmnet_frag_ipv6_skip_exthdr(
DATARMNETa41162aa9b,sizeof(*DATARMNET6bd3c60da4),&DATARMNETcb5c3d9e39,&
DATARMNETe95a0a73b9);if(DATARMNET5fc606c6dc<(0x13d7+456-0x159f)){goto 
DATARMNET02a8afcd23;}DATARMNET809d788099->DATARMNETa7eaea0d00=(u16)
DATARMNET5fc606c6dc;DATARMNET809d788099->DATARMNET072708db10=DATARMNETcb5c3d9e39
;if(DATARMNETe95a0a73b9){if(DATARMNET809d788099->DATARMNET072708db10==
DATARMNET75cddb74df)DATARMNET809d788099->DATARMNETa7eaea0d00+=
(0xc6f+3338-0x1971);DATARMNET5d24865423(DATARMNET433e163a43);goto 
DATARMNET02a8afcd23;}DATARMNET0d3dcef7b0=ntohs(DATARMNET6bd3c60da4->
DATARMNET5aeba29b95)+sizeof(*DATARMNET6bd3c60da4);DATARMNET809d788099->
DATARMNET6cc77c7b3f=DATARMNET0d3dcef7b0!=DATARMNET0eb96739bf;}else{return true;}
DATARMNET218e3007fa+=DATARMNET809d788099->DATARMNETa7eaea0d00;if(
DATARMNET809d788099->DATARMNET072708db10==DATARMNET70889e5696){struct 
DATARMNET1bffb1c388*DATARMNETbd1c0986f8;DATARMNETbd1c0986f8=(struct 
DATARMNET1bffb1c388*)DATARMNET218e3007fa;DATARMNET809d788099->
DATARMNET7ff34eacb7=DATARMNETbd1c0986f8;DATARMNET809d788099->DATARMNETfeb7c81ac7
=DATARMNETbd1c0986f8->DATARMNET686636af95*(0xcb9+267-0xdc0);}else if(
DATARMNET809d788099->DATARMNET072708db10==DATARMNETb02d95e937){struct 
DATARMNET2d87db499d*DATARMNET5829e80183;DATARMNET5829e80183=(struct 
DATARMNET2d87db499d*)DATARMNET218e3007fa;DATARMNET809d788099->
DATARMNETc51cdf696b=DATARMNET5829e80183;DATARMNET809d788099->DATARMNETfeb7c81ac7
=sizeof(*DATARMNET5829e80183);}else{goto DATARMNET02a8afcd23;}
DATARMNET809d788099->DATARMNET2f3cb41448=false;DATARMNET809d788099->
DATARMNET68ad0738e2=DATARMNETf6597f07e9(DATARMNET809d788099);if(!
DATARMNET809d788099->DATARMNET6cc77c7b3f){DATARMNETa41162aa9b->ip_proto=
DATARMNET809d788099->DATARMNET9f5b2909c8;DATARMNETa41162aa9b->ip_len=
DATARMNET809d788099->DATARMNETa7eaea0d00;DATARMNETa41162aa9b->trans_proto=
DATARMNET809d788099->DATARMNET072708db10;DATARMNETa41162aa9b->trans_len=
DATARMNET809d788099->DATARMNETfeb7c81ac7;DATARMNETa41162aa9b->hdrs_valid=
(0x9a3+3898-0x18dc);}DATARMNET02a8afcd23:DATARMNET809d788099->
DATARMNET5671455f38=DATARMNET0eb96739bf-DATARMNET809d788099->DATARMNETa7eaea0d00
-DATARMNET809d788099->DATARMNETfeb7c81ac7;if(DATARMNET809d788099->
DATARMNET6cc77c7b3f)DATARMNET5d24865423(DATARMNETf4e67e1692);DATARMNET809d788099
->DATARMNET798fafaf36=DATARMNETa41162aa9b;return false;}static void 
DATARMNET5eaded9c32(struct rmnet_frag_descriptor*DATARMNETa41162aa9b,struct 
rmnet_port*DATARMNETe8a5f322f0){struct DATARMNET8357daf015*DATARMNETf7e8f6395c=
DATARMNETccc25794e0();struct DATARMNETadd6ff90d0 DATARMNET809d788099;memset(&
DATARMNET809d788099,(0x1b23+1630-0x2181),sizeof(DATARMNET809d788099));
DATARMNET8f8c3a4cc3();DATARMNETf7e8f6395c->DATARMNET547651077b=
DATARMNETe8a5f322f0;if(DATARMNET00b745f472(DATARMNETa41162aa9b,&
DATARMNET809d788099)){DATARMNET5d24865423(DATARMNET056a0fe195);
rmnet_recycle_frag_descriptor(DATARMNETa41162aa9b,DATARMNETe8a5f322f0);goto 
DATARMNETe1f307999b;}DATARMNET5d24865423(DATARMNET18d408a5a5);if(
DATARMNET809d788099.DATARMNET2f3cb41448){goto DATARMNET52a3ca33f8;}else if(
DATARMNET809d788099.DATARMNET6cc77c7b3f){DATARMNET8b657e07e9(DATARMNET809d788099
.DATARMNET68ad0738e2);goto DATARMNET52a3ca33f8;}if(!DATARMNETa41162aa9b->
csum_valid){goto DATARMNET52a3ca33f8;}if(!DATARMNET9b8a1a69f3(&
DATARMNET809d788099))goto DATARMNET52a3ca33f8;goto DATARMNETe1f307999b;
DATARMNET52a3ca33f8:DATARMNETf9d626d72b(&DATARMNET809d788099);
DATARMNETe1f307999b:DATARMNET4c69e80b6f();}void DATARMNET8f8c3a4cc3(void){
spin_lock_bh(&DATARMNET56235f0bb4);}void DATARMNET4c69e80b6f(void){
spin_unlock_bh(&DATARMNET56235f0bb4);}void DATARMNETd9ec5f4e65(void){
rcu_assign_pointer(rmnet_perf_desc_entry,DATARMNET5eaded9c32);}void 
DATARMNET848914898b(void){rcu_assign_pointer(rmnet_perf_desc_entry,NULL);}bool 
DATARMNET4e490d9d37(void){void(*DATARMNETb4f3500b6d)(struct 
rmnet_frag_descriptor*DATARMNETa41162aa9b,struct rmnet_port*DATARMNETe8a5f322f0)
;rcu_read_lock();DATARMNETb4f3500b6d=rcu_dereference(rmnet_perf_desc_entry);
rcu_read_unlock();return DATARMNETb4f3500b6d!=NULL;}void DATARMNET654b85a739(
struct rmnet_frag_descriptor*DATARMNETa41162aa9b,u32 DATARMNET30fde83b85){struct
 DATARMNET8357daf015*DATARMNETf7e8f6395c=DATARMNETccc25794e0();
DATARMNETee281dc788(DATARMNET30fde83b85);DATARMNET5d24865423(DATARMNET6b8a6c4f4e
);rmnet_frag_deliver(DATARMNETa41162aa9b,DATARMNETf7e8f6395c->
DATARMNET547651077b);}void DATARMNETf9d626d72b(struct DATARMNETadd6ff90d0*
DATARMNET809d788099){struct rmnet_frag_descriptor*DATARMNETa41162aa9b=
DATARMNET809d788099->DATARMNET798fafaf36;u32 DATARMNET0eb96739bf=
DATARMNET809d788099->DATARMNET5671455f38+DATARMNET809d788099->
DATARMNETa7eaea0d00+DATARMNET809d788099->DATARMNETfeb7c81ac7;if(
DATARMNET0eb96739bf>65536)return;if(!DATARMNET809d788099->DATARMNET2f3cb41448)
DATARMNETa41162aa9b->hash=DATARMNET809d788099->DATARMNET68ad0738e2;
DATARMNET654b85a739(DATARMNETa41162aa9b,DATARMNET0eb96739bf);}void 
DATARMNETfaa320a86a(void*DATARMNETe8a5f322f0){(void)DATARMNETe8a5f322f0;
DATARMNETafcdd1146f();}void DATARMNET6b57fa3471(void*DATARMNETe8a5f322f0){struct
 DATARMNET8357daf015*DATARMNETf7e8f6395c=DATARMNETccc25794e0();(void)
DATARMNETe8a5f322f0;if(DATARMNETf7e8f6395c->DATARMNETfe5583a585.
DATARMNETf82a9c29ed)DATARMNET28dfa538f2();}void DATARMNET4aefca6d3c(struct 
rmnet_map_dl_ind_hdr*DATARMNETf3449c6d59,struct rmnet_map_control_command_header
*DATARMNET23a4adcff8){struct DATARMNET8357daf015*DATARMNETf7e8f6395c=
DATARMNETccc25794e0();(void)DATARMNET23a4adcff8;if(DATARMNETf7e8f6395c->
DATARMNETfe5583a585.DATARMNETecff29bcbf&&DATARMNET54fd6bf483())
DATARMNET5d24865423(DATARMNET51527f883c);DATARMNETf7e8f6395c->
DATARMNETfe5583a585.DATARMNETecff29bcbf=true;DATARMNETf7e8f6395c->
DATARMNETfe5583a585.DATARMNET26e013d9f7=DATARMNETf3449c6d59->le.seq;
DATARMNETf7e8f6395c->DATARMNETfe5583a585.DATARMNETdd6feb57a5=DATARMNETf3449c6d59
->le.pkts;}void DATARMNET94edfae28d(struct rmnet_map_dl_ind_trl*
DATARMNET0303d63d24,struct rmnet_map_control_command_header*DATARMNET23a4adcff8)
{struct DATARMNET8357daf015*DATARMNETf7e8f6395c=DATARMNETccc25794e0();(void)
DATARMNET23a4adcff8;if(DATARMNETf7e8f6395c->DATARMNETfe5583a585.
DATARMNET26e013d9f7!=DATARMNET0303d63d24->seq_le)DATARMNET5d24865423(
DATARMNETae9ed9e102);if(DATARMNET54fd6bf483())DATARMNET5d24865423(
DATARMNET3f56a10f4d);DATARMNETf7e8f6395c->DATARMNETfe5583a585.
DATARMNETecff29bcbf=false;DATARMNETf7e8f6395c->DATARMNETfe5583a585.
DATARMNET26e013d9f7=(0x1dfd+911-0x218c);DATARMNETf7e8f6395c->DATARMNETfe5583a585
.DATARMNETdd6feb57a5=(0x2bb+6482-0x1c0d);}