diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2019-04-14 17:01:10 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2019-04-14 17:01:10 +0200 |
| commit | 60bf77f7e7c4513a781e9acc1b9bca64c4051140 (patch) | |
| tree | 4793854ad401664a10c9bc12f5c371b417fb5712 /networking/udhcp/d6_socket.c | |
| parent | 0d75e8b7973353f1d034b97bebfd4d2c13a9f5d6 (diff) | |
| download | busybox-60bf77f7e7c4513a781e9acc1b9bca64c4051140.tar.gz | |
udhcpc6: code shrink
function old new delta
d6_read_interface 593 582 -11
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/udhcp/d6_socket.c')
| -rw-r--r-- | networking/udhcp/d6_socket.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/networking/udhcp/d6_socket.c b/networking/udhcp/d6_socket.c index fe46e5f1d..25e622d6f 100644 --- a/networking/udhcp/d6_socket.c +++ b/networking/udhcp/d6_socket.c @@ -10,7 +10,11 @@ #include <ifaddrs.h> #include <netpacket/packet.h> -int FAST_FUNC d6_read_interface(const char *interface, int *ifindex, struct in6_addr *nip6, uint8_t *mac) +int FAST_FUNC d6_read_interface( + const char *interface, + int *ifindex, + struct in6_addr *nip6, + uint8_t *mac) { int retval = 3; struct ifaddrs *ifap, *ifa; @@ -22,12 +26,12 @@ int FAST_FUNC d6_read_interface(const char *interface, int *ifindex, struct in6_ if (!ifa->ifa_addr || (strcmp(ifa->ifa_name, interface) != 0)) continue; - sip6 = (struct sockaddr_in6*)(ifa->ifa_addr); - if (ifa->ifa_addr->sa_family == AF_PACKET) { - struct sockaddr_ll *sll = (struct sockaddr_ll*)(ifa->ifa_addr); + struct sockaddr_ll *sll = (void*)(ifa->ifa_addr); memcpy(mac, sll->sll_addr, 6); - log2("MAC %02x:%02x:%02x:%02x:%02x:%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); + log2("MAC %02x:%02x:%02x:%02x:%02x:%02x", + mac[0], mac[1], mac[2], mac[3], mac[4], mac[5] + ); *ifindex = sll->sll_ifindex; log2("ifindex %d", *ifindex); retval &= (3 - (1<<0)); @@ -47,6 +51,8 @@ int FAST_FUNC d6_read_interface(const char *interface, int *ifindex, struct in6_ * is requesting configuration information as the source address in the * header of the IP datagram." */ + sip6 = (void*)(ifa->ifa_addr); + if (ifa->ifa_addr->sa_family == AF_INET6 && IN6_IS_ADDR_LINKLOCAL(&sip6->sin6_addr) ) { @@ -96,7 +102,7 @@ int FAST_FUNC d6_read_interface(const char *interface, int *ifindex, struct in6_ bb_error_msg("can't get %s", "MAC"); if (retval & (1<<1)) bb_error_msg("can't get %s", "link-local IPv6 address"); - return -1; + return retval; } int FAST_FUNC d6_listen_socket(int port, const char *inf) |