From: Ganesh Goudar <ganeshgr@chelsio.com>
Date: Wed, 27 Dec 2017 13:12:57 +0530
Subject: cxgb4: use CLIP with LIP6 on T6 for TCAM filters
Patch-mainline: v4.16-rc1
Git-commit: a9add1944eb1432c28087eba2b5637657a90daa3
References: bsc#1097585 bsc#1097586 bsc#1097587 bsc#1097588 bsc#1097583 bsc#1097584

On T6, LIP compression is always enabled for IPv6 and uncompressed
IPv6 for LIP is not supported. So, for IPv6 TCAM filters on T6,
add LIP6 to CLIP on filter creation, and release the same on filter
deletion.

Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
@@ -694,7 +694,7 @@ void clear_filter(struct adapter *adap,
 	if (f->smt)
 		cxgb4_smt_release(f->smt);
 
-	if (f->fs.hash && f->fs.type)
+	if ((f->fs.hash || is_t6(adap->params.chip)) && f->fs.type)
 		cxgb4_clip_release(f->dev, (const u32 *)&f->fs.val.lip, 1);
 
 	/* The zeroing of the filter rule below clears the filter valid,
@@ -1291,6 +1291,16 @@ int __cxgb4_set_filter(struct net_device
 	if (f->valid)
 		clear_filter(adapter, f);
 
+	if (is_t6(adapter->params.chip) && fs->type &&
+	    ipv6_addr_type((const struct in6_addr *)fs->val.lip) !=
+	    IPV6_ADDR_ANY) {
+		ret = cxgb4_clip_get(dev, (const u32 *)&fs->val.lip, 1);
+		if (ret) {
+			cxgb4_clear_ftid(&adapter->tids, filter_id, PF_INET6);
+			return ret;
+		}
+	}
+
 	/* Convert the filter specification into our internal format.
 	 * We copy the PF/VF specification into the Outer VLAN field
 	 * here so the rest of the code -- including the interface to