diff options
Diffstat (limited to 'freebsd/sbin/ifconfig/af_link.c')
| -rw-r--r-- | freebsd/sbin/ifconfig/af_link.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/freebsd/sbin/ifconfig/af_link.c b/freebsd/sbin/ifconfig/af_link.c index 0be5d388..da828d6c 100644 --- a/freebsd/sbin/ifconfig/af_link.c +++ b/freebsd/sbin/ifconfig/af_link.c @@ -51,6 +51,7 @@ static const char rcsid[] = #include <stdlib.h> #include <string.h> #include <ifaddrs.h> +#include <unistd.h> #include <net/if_dl.h> #include <net/if_types.h> @@ -79,7 +80,7 @@ link_status(int s __unused, const struct ifaddrs *ifa) sdl->sdl_alen == ETHER_ADDR_LEN) { ether_format = ether_ntoa((struct ether_addr *)LLADDR(sdl)); if (f_ether != NULL && strcmp(f_ether, "dash") == 0) { - for (format_char = strchr(ether_format, ':'); + for (format_char = strchr(ether_format, ':'); format_char != NULL; format_char = strchr(ether_format, ':')) *format_char = '-'; @@ -90,6 +91,48 @@ link_status(int s __unused, const struct ifaddrs *ifa) printf("\tlladdr %s\n", link_ntoa(sdl) + n); } + /* Best-effort (i.e. failures are silent) to get original + * hardware address, as read by NIC driver at attach time. Only + * applies to Ethernet NICs (IFT_ETHER). However, laggX + * interfaces claim to be IFT_ETHER, and re-type their component + * Ethernet NICs as IFT_IEEE8023ADLAG. So, check for both. If + * the MAC is zeroed, then it's actually a lagg. + */ + if ((sdl->sdl_type == IFT_ETHER || + sdl->sdl_type == IFT_IEEE8023ADLAG) && + sdl->sdl_alen == ETHER_ADDR_LEN) { + struct ifreq ifr; + int sock_hw; + int rc; + static const u_char laggaddr[6] = {0}; + + strncpy(ifr.ifr_name, ifa->ifa_name, + sizeof(ifr.ifr_name)); + memcpy(&ifr.ifr_addr, ifa->ifa_addr, + sizeof(ifa->ifa_addr->sa_len)); + ifr.ifr_addr.sa_family = AF_LOCAL; + if ((sock_hw = socket(AF_LOCAL, SOCK_DGRAM, 0)) < 0) { + warn("socket(AF_LOCAL,SOCK_DGRAM)"); + return; + } + rc = ioctl(sock_hw, SIOCGHWADDR, &ifr); + close(sock_hw); + if (rc != 0) { + return; + } + if (memcmp(ifr.ifr_addr.sa_data, laggaddr, sdl->sdl_alen) == 0) { + return; + } + ether_format = ether_ntoa((const struct ether_addr *) + &ifr.ifr_addr.sa_data); + if (f_ether != NULL && strcmp(f_ether, "dash") == 0) { + for (format_char = strchr(ether_format, ':'); + format_char != NULL; + format_char = strchr(ether_format, ':')) + *format_char = '-'; + } + printf("\thwaddr %s\n", ether_format); + } } } |