ipacm: fix tcp fragment rule for IPv6 on LTE

Fix the ipv6 frag pkts going to sw-exception
issue. Update the TCP ipv6 fragment rule attribute
on LTE use-case.

Change-Id: I53dcdf624cbc29146a7e095e7cc043584e919795
diff --git a/ipacm/src/IPACM_Wan.cpp b/ipacm/src/IPACM_Wan.cpp
index 1a34388..0c2c395 100644
--- a/ipacm/src/IPACM_Wan.cpp
+++ b/ipacm/src/IPACM_Wan.cpp
@@ -3765,34 +3765,11 @@
 
 		memcpy(&(rules[rule_offset + 2]), &flt_rule_entry, sizeof(struct ipa_flt_rule_add));
 
-		/* Add the fragment filtering rule. */
-		memset(&flt_rule_entry, 0, sizeof(struct ipa_flt_rule_add));
-
-		flt_rule_entry.at_rear = true;
-		flt_rule_entry.flt_rule_hdl = -1;
-		flt_rule_entry.status = -1;
-
-		flt_rule_entry.rule.retain_hdr = 1;
-		flt_rule_entry.rule.to_uc = 0;
-		flt_rule_entry.rule.eq_attrib_type = 1;
-		flt_rule_entry.rule.action = IPA_PASS_TO_ROUTING;
-#ifdef FEATURE_IPA_V3
-		flt_rule_entry.rule.hashable = true;
-#endif
-		flt_rule_entry.rule.rt_tbl_idx = rt_tbl_idx.idx;
-		flt_rule_entry.rule.eq_attrib.rule_eq_bitmap |= (1<<1);
-		flt_rule_entry.rule.eq_attrib.protocol_eq_present = 1;
-		flt_rule_entry.rule.eq_attrib.protocol_eq = IPACM_FIREWALL_IPPROTO_TCP;
-		flt_rule_entry.rule.attrib.u.v6.next_hdr = (uint8_t)IPACM_FIREWALL_IPPROTO_TCP;
-
 		/* Configuring fragment Filtering Rule */
-		memcpy(&flt_rule_entry.rule.attrib,
-					 &rx_prop->rx[0].attrib,
-					 sizeof(flt_rule_entry.rule.attrib));
-		/* remove meta data mask since we only install default flt rules once for all modem PDN*/
-		flt_rule_entry.rule.attrib.attrib_mask &= ~((uint32_t)IPA_FLT_META_DATA);
-
+		flt_rule_entry.rule.attrib.attrib_mask &= ~((uint32_t)IPA_FLT_DST_ADDR);
 		flt_rule_entry.rule.attrib.attrib_mask |= IPA_FLT_FRAGMENT;
+		flt_rule_entry.rule.attrib.attrib_mask |= IPA_FLT_NEXT_HDR;
+		flt_rule_entry.rule.attrib.u.v6.next_hdr = IPACM_FIREWALL_IPPROTO_TCP;
 
 		memset(&flt_eq, 0, sizeof(flt_eq));
 		memcpy(&flt_eq.attrib, &flt_rule_entry.rule.attrib, sizeof(flt_eq.attrib));