Thread (10 messages) flat view 10 messages, 2 authors, 2016-10-20

Re: [PATCH v4 net-next 1/7] ipv6: Fix Makefile conditional to use CONFIG_INET

From: Tom Herbert <hidden>
Date: 2016-10-20 03:16:02

Dave,

Please don't apply this. It's like whack-a-mole trying to resolve all
the dependencies. I'll resubmit the series without this.

Tom

On Wed, Oct 19, 2016 at 4:03 PM, Tom Herbert [off-list ref] wrote:
quoted hunk ↗ jump to hunk
ipv6 directory was being built based on CONFIG_NET not CONFIG_INET.

Signed-off-by: Tom Herbert <redacted>
---
 drivers/net/usb/cdc_mbim.c  |  4 ++++
 include/net/ipv6.h          | 15 +++++++++++++++
 include/net/net_namespace.h |  2 ++
 net/Makefile                |  2 +-
 4 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
index 96a5028..6b38e0c 100644
--- a/drivers/net/usb/cdc_mbim.c
+++ b/drivers/net/usb/cdc_mbim.c
@@ -301,6 +301,7 @@ static struct sk_buff *cdc_mbim_tx_fixup(struct usbnet *dev, struct sk_buff *skb
        return NULL;
 }

+#ifdef CONFIG_INET
 /* Some devices are known to send Neigbor Solicitation messages and
  * require Neigbor Advertisement replies.  The IPv6 core will not
  * respond since IFF_NOARP is set, so we must handle them ourselves.
@@ -350,6 +351,7 @@ static void do_neigh_solicit(struct usbnet *dev, u8 *buf, u16 tci)
 out:
        dev_put(netdev);
 }
+#endif

 static bool is_neigh_solicit(u8 *buf, size_t len)
 {
@@ -377,8 +379,10 @@ static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_
                        proto = htons(ETH_P_IP);
                        break;
                case 0x60:
+#ifdef CONFIG_INET
                        if (is_neigh_solicit(buf, len))
                                do_neigh_solicit(dev, buf, tci);
+#endif
                        proto = htons(ETH_P_IPV6);
                        break;
                default:
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 8fed1cd..cbb1ce0 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -936,8 +936,15 @@ void ipv6_push_nfrag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
 void ipv6_push_frag_opts(struct sk_buff *skb, struct ipv6_txoptions *opt,
                         u8 *proto);

+#ifdef CONFIG_INET
 int ipv6_skip_exthdr(const struct sk_buff *, int start, u8 *nexthdrp,
                     __be16 *frag_offp);
+#else
+static inline int ipv6_skip_exthdr(const struct sk_buff *skb, int start,
+                                  u8 *nexthdrp, __be16 *frag_offp) {
+       return -1;
+}
+#endif

 bool ipv6_ext_hdr(u8 nexthdr);
@@ -948,8 +955,16 @@ enum {
 };

 /* find specified header and get offset to it */
+#ifdef CONFIG_INET
 int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset, int target,
                  unsigned short *fragoff, int *fragflg);
+#else
+static inline int ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
+                               int target, unsigned short *fragoff,
+                               int *fragflg) {
+       return -EPROTONOSUPPORT;
+}
+#endif

 int ipv6_find_tlv(const struct sk_buff *skb, int offset, int type);
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index fc4f757..b4c4a5f 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -352,8 +352,10 @@ static inline void rt_genid_bump_ipv4(struct net *net)
 extern void (*__fib6_flush_trees)(struct net *net);
 static inline void rt_genid_bump_ipv6(struct net *net)
 {
+#ifdef CONFIG_INET
        if (__fib6_flush_trees)
                __fib6_flush_trees(net);
+#endif
 }

 #if IS_ENABLED(CONFIG_IEEE802154_6LOWPAN)
diff --git a/net/Makefile b/net/Makefile
index 4cafaa2..82ffb91 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -17,7 +17,7 @@ obj-$(CONFIG_NETFILTER)               += netfilter/
 obj-$(CONFIG_INET)             += ipv4/
 obj-$(CONFIG_XFRM)             += xfrm/
 obj-$(CONFIG_UNIX)             += unix/
-obj-$(CONFIG_NET)              += ipv6/
+obj-$(CONFIG_INET)             += ipv6/
 obj-$(CONFIG_PACKET)           += packet/
 obj-$(CONFIG_NET_KEY)          += key/
 obj-$(CONFIG_BRIDGE)           += bridge/
--
2.9.3
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