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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Marvell nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *******************************************************************************/ /******************************************************************************* * mvPPP.c - Marvell Fast Route PPP Processing * * DESCRIPTION: * * Supported Features: * - OS independent. * *******************************************************************************/ /* includes */ #include "mvTypes.h" #include "mvOs.h" #include "mvStack.h" #include "mvDebug.h" #include "eth/nfp/mvNfp.h" #include "eth/mvEth.h" #define MACFMT "%02X:%02X:%02X:%02X:%02X:%02X" #define MACSTR(m) m[0],m[1],m[2],m[3],m[4],m[5] MV_FP_PPP_RULE pppOpen[ETH_FP_IFINDEX_MAX]; /* connected pppoe sessions */ MV_FP_PPP_RULE pppHalf[ETH_FP_IFINDEX_MAX]; /* half-open pppoe connections */ MV_STATUS mvFpPppInit(void) { memset(pppOpen, 0, sizeof(MV_FP_PPP_RULE) * ETH_FP_IFINDEX_MAX); memset(pppHalf, 0, sizeof(MV_FP_PPP_RULE) * ETH_FP_IFINDEX_MAX); mvOsPrintf("NFP (pppoe) init %d entries, %d bytes\n", ETH_FP_IFINDEX_MAX, 2 * sizeof(MV_FP_PPP_RULE) * ETH_FP_IFINDEX_MAX); return MV_OK; } MV_STATUS mvFpPppClear(void) { memset(pppOpen, 0, sizeof(MV_FP_PPP_RULE) * ETH_FP_IFINDEX_MAX); return MV_OK; } void mvFpPppDestroy(void) { mvFpPppClear(); } void mvFpPppRulePrint(char* text, MV_FP_PPP_RULE *rule) { mvOsPrintf("NFP (pppoe): ppp %s (%s) if_ppp=%u if_eth=%u session=%u DA=" MACFMT " SA=" MACFMT " %x\n", text, rule->pppInfo.if_ppp ? "open":"half", rule->pppInfo.if_ppp, rule->pppInfo.if_eth, rule->pppInfo.u.ppp.session, MACSTR(rule->pppInfo.u.ppp.da), MACSTR(rule->pppInfo.u.ppp.sa), rule->pppInfo.channel); } MV_STATUS mvFpPppRuleSet(MV_FP_PPP_RULE *rule) { int if_ppp = rule->pppInfo.if_ppp; int i = ETH_FP_IFINDEX_MAX; #ifdef MV_FP_DEBUG mvFpPppRulePrint("new", rule); #endif /* half open */ if (!if_ppp) { memcpy(&pppHalf[rule->pppInfo.if_eth], rule, sizeof(MV_FP_PPP_RULE)); } else while(i--) { /* look for channel id match */ if (pppHalf[i].pppInfo.channel == rule->pppInfo.channel) { memcpy(&pppOpen[if_ppp], &pppHalf[i], sizeof(MV_FP_PPP_RULE)); memset(&pppHalf[i], 0, sizeof(MV_FP_PPP_RULE)); pppOpen[if_ppp].pppInfo.if_ppp = if_ppp; break; } } return MV_OK; } MV_STATUS mvFpPppRuleDel(MV_FP_PPP_RULE *rule) { int i = ETH_FP_IFINDEX_MAX; #ifdef MV_FP_DEBUG mvOsPrintf("NFP (pppoe): del ppp channel %x\n", rule->pppInfo.channel); #endif while(i--) { if (pppOpen[i].pppInfo.channel == rule->pppInfo.channel) { mvFpPppRulePrint("del", &pppOpen[i]); pppOpen[i].pppInfo.if_ppp = 0; memset(&pppOpen[i], 0, sizeof(MV_FP_PPP_RULE)); break; } } return MV_OK; } MV_U32 mvFpPppRuleAge(MV_FP_PPP_RULE *rule) { return MV_OK; } MV_STATUS mvFpPppPrint(void) { int i = ETH_FP_IFINDEX_MAX; while(i--) { if (pppOpen[i].pppInfo.if_eth) mvFpPppRulePrint("", &pppOpen[i]); if (pppHalf[i].pppInfo.if_eth) mvFpPppRulePrint("", &pppHalf[i]); } return MV_OK; } MV_U32 mvFpPppPhyIf(MV_U32 ifIndex) { if (pppOpen[ifIndex].pppInfo.if_ppp) return pppOpen[ifIndex].pppInfo.if_eth; return ETH_FP_IFINDEX_MAX; } /* IP header csum calculation */ static inline unsigned short from32to16(unsigned long x) { /* add up 16-bit and 16-bit for 16+c bit */ x = (x & 0xffff) + (x >> 16); /* add up carry.. */ x = (x & 0xffff) + (x >> 16); return x; } static unsigned long do_csum(char* buff, int len) { int odd, count; unsigned long result = 0; if (len <= 0) goto out; odd = 1 & (unsigned long) buff; if (odd) { result = *buff; len--; buff++; } count = len >> 1; /* nr of 16-bit words.. */ if (count) { if (2 & (unsigned long) buff) { result += *(unsigned short *) buff; count--; len -= 2; buff += 2; } count >>= 1; /* nr of 32-bit words.. */ if (count) { unsigned long carry = 0; do { unsigned long w = *(unsigned long *) buff; count--; buff += 4; result += carry; result += w; carry = (w > result); } while (count); result += carry; result = (result & 0xffff) + (result >> 16); } if (len & 2) { result += *(unsigned short *) buff; buff += 2; } } if (len & 1) result += (*buff << 8); result = from32to16(result); if (odd) result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); out: return result; } static INLINE void mvFpCSumIP(MV_IP_HEADER* pIpHdr) { pIpHdr->checksum = 0; pIpHdr->checksum = ~do_csum((char*)pIpHdr, 20 /*iph->ihl*/); } static INLINE MV_U32 mvFpPppLookup(MV_U32 ifIndex) { return pppOpen[ifIndex].pppInfo.if_ppp; } /* NFP bottom half */ int mvFpPPPoE(MV_U32 ifIndex, MV_PKT_INFO* pPkt, MV_FP_STATS* pFpStats) { MV_U8* pEth = pPkt->pFrags->bufVirtPtr; MV_BUF_INFO* pBuf = pPkt->pFrags; MV_NFP_STAT(pFpStats->ppp_tx_esp++); /* Encapsulate PPPoE on Tx */ if (!mvFpPppLookup(ifIndex)) { MV_NFP_STAT(pFpStats->ppp_err++); return MV_FAIL; } if (pBuf->dataSize > ETH_FP_PPPOE_MTU) { /* Bad, we check size in the mvNfpSecOutgoing() --BK */ mvOsPrintf("PPPoE oversize %d > %d\n", pBuf->dataSize, ETH_FP_PPPOE_MTU); MV_NFP_STAT(pFpStats->ppp_err++); return MV_FAIL; } pBuf->bufAddrShift += ETH_FP_PPPOE_HDR; pBuf->bufPhysAddr -= ETH_FP_PPPOE_HDR; pBuf->bufVirtPtr -= ETH_FP_PPPOE_HDR; pBuf->dataSize += ETH_FP_PPPOE_HDR; pEth -= ETH_FP_PPPOE_HDR; /* -6B aligment from 32B boundary */ { MV_U32* d = (MV_U32*)pEth; MV_U32* s = pppOpen[ifIndex].pppInfo.u.u32; *(d++) = *(s++); *(d++) = *(s++); *(d++) = *(s++); *(d++) = *(s++); *(d++) = *(s++); *(d++) = *(s++); } /* update payload len */ *(MV_U16*)(pEth+20) = htons(pBuf->dataSize - 14 - ETH_FP_PPPOE_HDR); /* recalculate IP csum in sw */ mvFpCSumIP((MV_IP_HEADER*)(pEth+24)); pPkt->status = 0; /* flush two cachelines */ mvOsCacheLineFlushInv(NULL, pEth); mvOsCacheLineFlushInv(NULL, pEth+32); return MV_OK; }