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Lines 545-561
interface_set_mtu_priv(char *ifname, u_i
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| 545 |
{ |
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{ |
| 546 |
struct ifreq ifr; |
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struct ifreq ifr; |
| 547 |
int sock; |
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int sock; |
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u_int16_t old_mtu; |
| 548 |
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| 549 |
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) |
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if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == -1) |
| 550 |
error("Can't create socket"); |
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error("Can't create socket"); |
| 551 |
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| 552 |
memset(&ifr, 0, sizeof(ifr)); |
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memset(&ifr, 0, sizeof(ifr)); |
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old_mtu = 0; |
| 553 |
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| 554 |
strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
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strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); |
| 555 |
ifr.ifr_mtu = mtu; |
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| 556 |
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| 557 |
if (ioctl(sock, SIOCSIFMTU, &ifr) == -1) |
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if (ioctl(sock, SIOCGIFMTU, (caddr_t)&ifr) == -1) |
| 558 |
warning("SIOCSIFMTU failed (%d): %s", mtu, |
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warning("SIOCGIFMTU failed (%s): %s", ifname, |
| 559 |
strerror(errno)); |
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strerror(errno)); |
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else |
| 562 |
old_mtu = ifr.ifr_mtu; |
| 563 |
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| 564 |
if (mtu != old_mtu) { |
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ifr.ifr_mtu = mtu; |
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| 567 |
if (ioctl(sock, SIOCSIFMTU, &ifr) == -1) |
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warning("SIOCSIFMTU failed (%d): %s", mtu, |
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strerror(errno)); |
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} |
| 571 |
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| 560 |
close(sock); |
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close(sock); |
| 561 |
} |
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} |