linux-kernel - [PATCH] cxgb4: Fix build failure when CONFIG

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Date:   Fri, 20 Nov 2020 13:25:28 -0600
From:   Tom Seewald <tseewald@...il.com>
To:     netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        ayush.sawal@...lsio.com, rajur@...lsio.com,
        Tom Seewald <tseewald@...il.com>
Subject: [PATCH] cxgb4: Fix build failure when CONFIG_TLS=m

After commit 9d2e5e9eeb59 ("cxgb4/ch_ktls: decrypted bit is not enough")
whenever CONFIG_TLS=m and CONFIG_CHELSIO_T4=y, the following build
failure occurs:

ld: drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.o: in function
`cxgb_select_queue':
cxgb4_main.c:(.text+0x2dac): undefined reference to `tls_validate_xmit_skb'

Fix this by ensuring that if TLS is set to be a module, CHELSIO_T4 will
also be compiled as a module. As otherwise the cxgb4 driver will not be
able to access TLS' symbols.

Fixes: 9d2e5e9eeb59 ("cxgb4/ch_ktls: decrypted bit is not enough")
Signed-off-by: Tom Seewald <tseewald@...il.com>
---
 drivers/net/ethernet/chelsio/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/Kconfig b/drivers/net/ethernet/chelsio/Kconfig
index 87cc0ef68b31..8ba0e08e5e64 100644
--- a/drivers/net/ethernet/chelsio/Kconfig
+++ b/drivers/net/ethernet/chelsio/Kconfig
@@ -68,7 +68,7 @@ config CHELSIO_T3
 
 config CHELSIO_T4
 	tristate "Chelsio Communications T4/T5/T6 Ethernet support"
-	depends on PCI && (IPV6 || IPV6=n)
+	depends on PCI && (IPV6 || IPV6=n) && (TLS || TLS=n)
 	select FW_LOADER
 	select MDIO
 	select ZLIB_DEFLATE
-- 
2.20.1