From 08c63a33f34186e0e818cd625efe4f6efab03a5b Mon Sep 17 00:00:00 2001 From: "Fabio M. De Francesco" Date: Tue, 17 Aug 2021 20:57:23 +0200 Subject: [PATCH] staging: r8188eu: Remove code depending on NAT25_LOOKUP Remove all the code related to the management of the NAT25_LOOKUP method in nat25_db_handle(). The only function that used that method was the now deleted nat25_handle_frame(). Remove the NAT25_LOOKUP entry from the NAT25_METHOD enum because it is not anymore used everywhere else in the code of the driver. Remove the 'sender' pointer to integer. Remove __nat25_db_network_lookup_and_replace(). Following the deletion of the code related to the NAT25_LOOKUP method, they are no more needed. Signed-off-by: Fabio M. De Francesco Link: https://lore.kernel.org/r/20210817185723.15192-1-fmdefrancesco@gmail.com Signed-off-by: Greg Kroah-Hartman --- drivers/staging/r8188eu/core/rtw_br_ext.c | 164 +-------------------------- drivers/staging/r8188eu/include/rtw_br_ext.h | 1 - 2 files changed, 1 insertion(+), 164 deletions(-) diff --git a/drivers/staging/r8188eu/core/rtw_br_ext.c b/drivers/staging/r8188eu/core/rtw_br_ext.c index e8eea95..ee52f28 100644 --- a/drivers/staging/r8188eu/core/rtw_br_ext.c +++ b/drivers/staging/r8188eu/core/rtw_br_ext.c @@ -295,56 +295,6 @@ static void __network_hash_unlink(struct nat25_network_db_entry *ent) ent->pprev_hash = NULL; } -static int __nat25_db_network_lookup_and_replace(struct adapter *priv, - struct sk_buff *skb, unsigned char *networkAddr) -{ - struct nat25_network_db_entry *db; - - spin_lock_bh(&priv->br_ext_lock); - - db = priv->nethash[__nat25_network_hash(networkAddr)]; - while (db) { - if (!memcmp(db->networkAddr, networkAddr, MAX_NETWORK_ADDR_LEN)) { - if (!__nat25_has_expired(priv, db)) { - /* replace the destination mac address */ - memcpy(skb->data, db->macAddr, ETH_ALEN); - atomic_inc(&db->use_count); - - DEBUG_INFO("NAT25: Lookup M:%02x%02x%02x%02x%02x%02x N:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" - "%02x%02x%02x%02x%02x%02x\n", - db->macAddr[0], - db->macAddr[1], - db->macAddr[2], - db->macAddr[3], - db->macAddr[4], - db->macAddr[5], - db->networkAddr[0], - db->networkAddr[1], - db->networkAddr[2], - db->networkAddr[3], - db->networkAddr[4], - db->networkAddr[5], - db->networkAddr[6], - db->networkAddr[7], - db->networkAddr[8], - db->networkAddr[9], - db->networkAddr[10], - db->networkAddr[11], - db->networkAddr[12], - db->networkAddr[13], - db->networkAddr[14], - db->networkAddr[15], - db->networkAddr[16]); - } - spin_unlock_bh(&priv->br_ext_lock); - return 1; - } - db = db->next_hash; - } - spin_unlock_bh(&priv->br_ext_lock); - return 0; -} - static void __nat25_db_network_insert(struct adapter *priv, unsigned char *macAddr, unsigned char *networkAddr) { @@ -484,27 +434,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) __nat25_db_print(priv); return 0; - case NAT25_LOOKUP: - DEBUG_INFO("NAT25: Lookup IP, SA =%08x, DA =%08x\n", iph->saddr, iph->daddr); - tmp = be32_to_cpu(iph->daddr); - __nat25_generate_ipv4_network_addr(networkAddr, &tmp); - - if (!__nat25_db_network_lookup_and_replace(priv, skb, networkAddr)) { - if (*((unsigned char *)&iph->daddr + 3) == 0xff) { - /* L2 is unicast but L3 is broadcast, make L2 bacome broadcast */ - DEBUG_INFO("NAT25: Set DA as boardcast\n"); - memset(skb->data, 0xff, ETH_ALEN); - } else { - /* forward unknow IP packet to upper TCP/IP */ - DEBUG_INFO("NAT25: Replace DA with BR's MAC\n"); - if ((*(u32 *)priv->br_mac) == 0 && (*(u16 *)(priv->br_mac+4)) == 0) { - printk("Re-init netdev_br_init() due to br_mac == 0!\n"); - netdev_br_init(priv->pnetdev); - } - memcpy(skb->data, priv->br_mac, ETH_ALEN); - } - } - return 0; default: return -1; } @@ -514,7 +443,7 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) /*---------------------------------------------------*/ struct arphdr *arp = (struct arphdr *)(skb->data + ETH_HLEN); unsigned char *arp_ptr = (unsigned char *)(arp + 1); - unsigned int *sender, *target; + unsigned int *sender; if (arp->ar_pro != __constant_htons(ETH_P_IP)) { DEBUG_WARN("NAT25: arp protocol unknown (%4x)!\n", be16_to_cpu(arp->ar_pro)); @@ -536,20 +465,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) __nat25_db_network_insert(priv, skb->data+ETH_ALEN, networkAddr); __nat25_db_print(priv); return 0; - case NAT25_LOOKUP: - DEBUG_INFO("NAT25: Lookup ARP\n"); - - arp_ptr += arp->ar_hln; - sender = (unsigned int *)arp_ptr; - arp_ptr += (arp->ar_hln + arp->ar_pln); - target = (unsigned int *)arp_ptr; - __nat25_generate_ipv4_network_addr(networkAddr, target); - __nat25_db_network_lookup_and_replace(priv, skb, networkAddr); - /* change to ARP target mac address to Lookup result */ - arp_ptr = (unsigned char *)(arp + 1); - arp_ptr += (arp->ar_hln + arp->ar_pln); - memcpy(arp_ptr, skb->data, ETH_ALEN); - return 0; default: return -1; } @@ -637,70 +552,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) priv->pppoe_connection_in_progress = 0; } return 0; - case NAT25_LOOKUP: - if (ph->code == PADO_CODE || ph->code == PADS_CODE) { - if (priv->ethBrExtInfo.addPPPoETag) { - struct pppoe_tag *tag; - unsigned char *ptr; - unsigned short tagType, tagLen; - int offset = 0; - - ptr = __nat25_find_pppoe_tag(ph, ntohs(PTT_RELAY_SID)); - if (!ptr) { - DEBUG_ERR("Fail to find PTT_RELAY_SID in FADO!\n"); - return -1; - } - - tag = (struct pppoe_tag *)ptr; - tagType = (unsigned short)((ptr[0] << 8) + ptr[1]); - tagLen = (unsigned short)((ptr[2] << 8) + ptr[3]); - - if ((tagType != ntohs(PTT_RELAY_SID)) || (tagLen < (MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN))) { - DEBUG_ERR("Invalid PTT_RELAY_SID tag length [%d]!\n", tagLen); - return -1; - } - - pMagic = (unsigned short *)tag->tag_data; - if (ntohs(*pMagic) != MAGIC_CODE) { - DEBUG_ERR("Can't find MAGIC_CODE in %s packet!\n", - (ph->code == PADO_CODE ? "PADO" : "PADS")); - return -1; - } - - memcpy(skb->data, tag->tag_data+MAGIC_CODE_LEN, ETH_ALEN); - - if (tagLen > MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN) - offset = TAG_HDR_LEN; - - if (skb_pull_and_merge(skb, ptr+offset, TAG_HDR_LEN+MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN-offset) < 0) { - DEBUG_ERR("call skb_pull_and_merge() failed in PADO packet!\n"); - return -1; - } - ph->length = htons(ntohs(ph->length)-(TAG_HDR_LEN+MAGIC_CODE_LEN+RTL_RELAY_TAG_LEN-offset)); - if (offset > 0) - tag->tag_len = htons(tagLen-MAGIC_CODE_LEN-RTL_RELAY_TAG_LEN); - - DEBUG_INFO("NAT25: Lookup PPPoE, forward %s Packet from %s\n", - (ph->code == PADO_CODE ? "PADO" : "PADS"), skb->dev->name); - } else { /* not add relay tag */ - if (!priv->pppoe_connection_in_progress) { - DEBUG_ERR("Discard PPPoE packet due to no connection in progresss!\n"); - return -1; - } - memcpy(skb->data, priv->pppoe_addr, ETH_ALEN); - priv->pppoe_connection_in_progress = WAIT_TIME_PPPOE; - } - } else { - if (ph->sid != 0) { - DEBUG_INFO("NAT25: Lookup PPPoE, lookup session packet from %s\n", skb->dev->name); - __nat25_generate_pppoe_network_addr(networkAddr, skb->data+ETH_ALEN, &ph->sid); - __nat25_db_network_lookup_and_replace(priv, skb, networkAddr); - __nat25_db_print(priv); - } else { - return -1; - } - } - return 0; default: return -1; } @@ -713,8 +564,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) return -1; case NAT25_INSERT: return 0; - case NAT25_LOOKUP: - return 0; default: return -1; } @@ -727,8 +576,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) return -1; case NAT25_INSERT: return 0; - case NAT25_LOOKUP: - return 0; default: return -1; } @@ -775,15 +622,6 @@ int nat25_db_handle(struct adapter *priv, struct sk_buff *skb, int method) } } return 0; - case NAT25_LOOKUP: - DEBUG_INFO("NAT25: Lookup IP, SA =%4x:%4x:%4x:%4x:%4x:%4x:%4x:%4x, DA =%4x:%4x:%4x:%4x:%4x:%4x:%4x:%4x\n", - iph->saddr.s6_addr16[0], iph->saddr.s6_addr16[1], iph->saddr.s6_addr16[2], iph->saddr.s6_addr16[3], - iph->saddr.s6_addr16[4], iph->saddr.s6_addr16[5], iph->saddr.s6_addr16[6], iph->saddr.s6_addr16[7], - iph->daddr.s6_addr16[0], iph->daddr.s6_addr16[1], iph->daddr.s6_addr16[2], iph->daddr.s6_addr16[3], - iph->daddr.s6_addr16[4], iph->daddr.s6_addr16[5], iph->daddr.s6_addr16[6], iph->daddr.s6_addr16[7]); - __nat25_generate_ipv6_network_addr(networkAddr, (unsigned int *)&iph->daddr); - __nat25_db_network_lookup_and_replace(priv, skb, networkAddr); - return 0; default: return -1; } diff --git a/drivers/staging/r8188eu/include/rtw_br_ext.h b/drivers/staging/r8188eu/include/rtw_br_ext.h index 00d461c..69905d3 100644 --- a/drivers/staging/r8188eu/include/rtw_br_ext.h +++ b/drivers/staging/r8188eu/include/rtw_br_ext.h @@ -31,7 +31,6 @@ enum NAT25_METHOD { NAT25_MIN, NAT25_CHECK, NAT25_INSERT, - NAT25_LOOKUP, NAT25_PARSE, NAT25_MAX }; -- 2.7.4