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networkctl: Add support to display min and max MTU

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(networkctl)⚡ % ./networkctl status enp0s31f6                                                                                                                          ~/tt/networkctl/build
● 4: enp0s31f6
       Link File: /usr/lib/systemd/network/99-default.link
    Network File: n/a
            Type: ether
           State: n/a (unmanaged)
            Path: pci-0000:00:1f.6
          Driver: e1000e
          Vendor: Intel Corporation
           Model: Ethernet Connection (2) I219-LM
      HW Address: 8c:16:45:6c:83:b9 (LCFC(HeFei) Electronics Technology co., ltd)
             MTU: 1500
     Minimum MTU: 68
     Maximum MTU: 9000
This commit is contained in:
Susant Sahani 2019-05-21 17:44:36 +05:30
parent 61de0c42f3
commit 2c73f59b81
1 changed files with 16 additions and 0 deletions
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16
src/network/networkctl.c
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@ -101,9 +101,13 @@ typedef struct LinkInfo {
unsigned short iftype;
struct ether_addr mac_address;
uint32_t mtu;
uint32_t min_mtu;
uint32_t max_mtu;
bool has_mac_address:1;
bool has_mtu:1;
bool has_min_mtu:1;
bool has_max_mtu:1;
} LinkInfo;
static int link_info_compare(const LinkInfo *a, const LinkInfo *b) {
@ -157,6 +161,14 @@ static int decode_link(sd_netlink_message *m, LinkInfo *info, char **patterns) {
sd_netlink_message_read_u32(m, IFLA_MTU, &info->mtu) >= 0 &&
info->mtu > 0;
info->has_min_mtu =
sd_netlink_message_read_u32(m, IFLA_MIN_MTU, &info->min_mtu) >= 0 &&
info->min_mtu > 0;
info->has_max_mtu =
sd_netlink_message_read_u32(m, IFLA_MAX_MTU, &info->max_mtu) >= 0 &&
info->min_mtu > 0;
return 1;
}
@ -779,6 +791,10 @@ static int link_status_one(
if (info->has_mtu)
printf(" MTU: %" PRIu32 "\n", info->mtu);
if (info->has_min_mtu)
printf(" Minimum MTU: %" PRIu32 "\n", info->min_mtu);
if (info->has_max_mtu)
printf(" Maximum MTU: %" PRIu32 "\n", info->max_mtu);
(void) dump_addresses(rtnl, " Address: ", info->ifindex);
(void) dump_gateways(rtnl, hwdb, " Gateway: ", info->ifindex);