diff options
Diffstat (limited to 'target/linux/generic/pending-4.9/272-uapi-if_ether.h-prevent-redefinition-of-struct-ethhd.patch')
| -rw-r--r-- | target/linux/generic/pending-4.9/272-uapi-if_ether.h-prevent-redefinition-of-struct-ethhd.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/272-uapi-if_ether.h-prevent-redefinition-of-struct-ethhd.patch b/target/linux/generic/pending-4.9/272-uapi-if_ether.h-prevent-redefinition-of-struct-ethhd.patch new file mode 100644 index 0000000000..7b7b403ed0 --- /dev/null +++ b/target/linux/generic/pending-4.9/272-uapi-if_ether.h-prevent-redefinition-of-struct-ethhd.patch @@ -0,0 +1,65 @@ +From: David Heidelberger <david.heidelberger@ixit.cz> +Subject: uapi/if_ether.h: prevent redefinition of struct ethhdr + +Musl provides its own ethhdr struct definition. Add a guard to prevent +its definition of the appropriate musl header has already been included. + +Signed-off-by: John Spencer <maillist-linux@barfooze.de> +Tested-by: David Heidelberger <david.heidelberger@ixit.cz> +Signed-off-by: Jonas Gorski <jogo@openwrt.org> +--- + include/uapi/linux/if_ether.h | 3 +++ + include/uapi/linux/libc-compat.h | 11 +++++++++++ + 2 files changed, 14 insertions(+) + +--- a/include/uapi/linux/if_ether.h ++++ b/include/uapi/linux/if_ether.h +@@ -22,6 +22,7 @@ + #define _UAPI_LINUX_IF_ETHER_H + + #include <linux/types.h> ++#include <linux/libc-compat.h> + + /* + * IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble +@@ -138,11 +139,13 @@ + * This is an Ethernet frame header. + */ + ++#if __UAPI_DEF_ETHHDR + struct ethhdr { + unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ + unsigned char h_source[ETH_ALEN]; /* source ether addr */ + __be16 h_proto; /* packet type ID field */ + } __attribute__((packed)); ++#endif + + + #endif /* _UAPI_LINUX_IF_ETHER_H */ +--- a/include/uapi/linux/libc-compat.h ++++ b/include/uapi/linux/libc-compat.h +@@ -89,6 +89,14 @@ + + #endif /* _NET_IF_H */ + ++/* musl defines the ethhdr struct itself in its netinet/if_ether.h. ++ * Glibc just includes the kernel header and uses a different guard. */ ++#if defined(_NETINET_IF_ETHER_H) ++#define __UAPI_DEF_ETHHDR 0 ++#else ++#define __UAPI_DEF_ETHHDR 1 ++#endif ++ + /* Coordinate with libc netinet/in.h header. */ + #if defined(_NETINET_IN_H) + +@@ -184,6 +192,9 @@ + /* For the future if glibc adds IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO */ + #define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 1 + ++/* Definitions for if_ether.h */ ++#define __UAPI_DEF_ETHHDR 1 ++ + /* Definitions for in.h */ + #define __UAPI_DEF_IN_ADDR 1 + #define __UAPI_DEF_IN_IPPROTO 1 |