[PATCH net-next v2 1/1] net: qualcomm: rmnet: always expose a few functions

A recent change tidied up some conditional code, avoiding the use of
some #ifdefs.  Unfortunately, if CONFIG_IPV6 was not enabled, it
meant that two functions were referenced but never defined.

The easiest fix is to just define stubs for these functions if
CONFIG_IPV6 is not defined.  This will soon be simplified further
by some other development in the works...

Reported-by: kernel test robot <redacted>
Fixes: 75db5b07f8c39 ("net: qualcomm: rmnet: eliminate some ifdefs")
Signed-off-by: Alex Elder <redacted>
---
v2: Rebased on current net-next/master; this fixes a bug there.

 .../net/ethernet/qualcomm/rmnet/rmnet_map_data.c  | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
index a6ce22f60a00c..39fba3a347fa6 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_map_data.c

@@ -153,6 +153,14 @@ rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
 	priv->stats.csum_ok++;
 	return 0;
 }
+#else
+static int
+rmnet_map_ipv6_dl_csum_trailer(struct sk_buff *skb,
+			       struct rmnet_map_dl_csum_trailer *csum_trailer,
+			       struct rmnet_priv *priv)
+{
+	return 0;
+}
 #endif
 
 static void rmnet_map_complement_ipv4_txporthdr_csum_field(void *iphdr)

@@ -223,6 +231,13 @@ rmnet_map_ipv6_ul_csum_header(struct ipv6hdr *ipv6hdr,
 
 	rmnet_map_complement_ipv6_txporthdr_csum_field(ipv6hdr);
 }
+#else
+static void
+rmnet_map_ipv6_ul_csum_header(void *ip6hdr,
+			      struct rmnet_map_ul_csum_header *ul_header,
+			      struct sk_buff *skb)
+{
+}
 #endif
 
 static void rmnet_map_v5_checksum_uplink_packet(struct sk_buff *skb,

-- 
2.27.0

Hello:

This patch was applied to netdev/net-next.git (refs/heads/master):

On Sun, 13 Jun 2021 09:25:22 -0500 you wrote:

A recent change tidied up some conditional code, avoiding the use of
some #ifdefs.  Unfortunately, if CONFIG_IPV6 was not enabled, it
meant that two functions were referenced but never defined.

The easiest fix is to just define stubs for these functions if
CONFIG_IPV6 is not defined.  This will soon be simplified further
by some other development in the works...

[...]

Here is the summary with links:
  - [net-next,v2,1/1] net: qualcomm: rmnet: always expose a few functions
    https://git.kernel.org/netdev/net-next/c/b84b53ee8337

You are awesome, thank you!
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