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authorMohsin Kazmi <sykazmi@cisco.com>2019-06-10 11:20:15 +0200
committerDamjan Marion <dmarion@me.com>2019-06-20 03:39:31 +0000
commit97d54ed43eb69f6ea731c02305ebe0ca0b1a5cc4 (patch)
tree1247bbd99b64313aa7dc9aa9fd51d822a42e31d8 /src/vat
parent3a9f11e6d93c9839c7bb0aaa62662299165123d8 (diff)
tap: add support to configure tap interface host MTU size
This patch adds support to configure host mtu size using api, cli or startup.conf. Type: feature Change-Id: I8ab087d82dbe7dedc498825c1a3ea3fcb2cce030 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Diffstat (limited to 'src/vat')
-rw-r--r--src/vat/api_format.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/src/vat/api_format.c b/src/vat/api_format.c
index d9a9d223804..f107246774c 100644
--- a/src/vat/api_format.c
+++ b/src/vat/api_format.c
@@ -7429,6 +7429,7 @@ api_tap_create_v2 (vat_main_t * vam)
{
unformat_input_t *i = vam->input;
vl_api_tap_create_v2_t *mp;
+#define TAP_FLAG_GSO (1 << 0)
u8 mac_address[6];
u8 random_mac = 1;
u32 id = ~0;
@@ -7445,6 +7446,9 @@ api_tap_create_v2 (vat_main_t * vam)
ip6_address_t host_ip6_gw;
u8 host_ip6_gw_set = 0;
u32 host_ip6_prefix_len = 0;
+ u8 host_mtu_set = 0;
+ u32 host_mtu_size = 0;
+ u32 tap_flags = 0;
int ret;
u32 rx_ring_sz = 0, tx_ring_sz = 0;
@@ -7484,6 +7488,12 @@ api_tap_create_v2 (vat_main_t * vam)
;
else if (unformat (i, "tx-ring-size %d", &tx_ring_sz))
;
+ else if (unformat (i, "host-mtu-size %d", &host_mtu_size))
+ host_mtu_set = 1;
+ else if (unformat (i, "no-gso"))
+ tap_flags &= ~TAP_FLAG_GSO;
+ else if (unformat (i, "gso"))
+ tap_flags |= TAP_FLAG_GSO;
else
break;
}
@@ -7533,6 +7543,11 @@ api_tap_create_v2 (vat_main_t * vam)
errmsg ("tx ring size must be 32768 or lower. ");
return -99;
}
+ if (host_mtu_set && (host_mtu_size < 64 || host_mtu_size > 65355))
+ {
+ errmsg ("host MTU size must be in between 64 and 65355. ");
+ return -99;
+ }
/* Construct the API message */
M (TAP_CREATE_V2, mp);
@@ -7546,6 +7561,9 @@ api_tap_create_v2 (vat_main_t * vam)
mp->host_ip6_addr_set = host_ip6_prefix_len != 0;
mp->rx_ring_sz = ntohs (rx_ring_sz);
mp->tx_ring_sz = ntohs (tx_ring_sz);
+ mp->host_mtu_set = host_mtu_set;
+ mp->host_mtu_size = ntohl (host_mtu_size);
+ mp->tap_flags = ntohl (tap_flags);
if (random_mac == 0)
clib_memcpy (mp->mac_address, mac_address, 6);
@@ -21843,7 +21861,7 @@ _(l2_flags, \
_(bridge_flags, \
"bd_id <bridge-domain-id> [learn] [forward] [uu-flood] [flood] [arp-term] [disable]\n") \
_(tap_create_v2, \
- "id <num> [hw-addr <mac-addr>] [host-ns <name>] [rx-ring-size <num> [tx-ring-size <num>]") \
+ "id <num> [hw-addr <mac-addr>] [host-ns <name>] [rx-ring-size <num> [tx-ring-size <num>] [host-mtu-size <mtu>] [gso | no-gso]") \
_(tap_delete_v2, \
"<vpp-if-name> | sw_if_index <id>") \
_(sw_interface_tap_v2_dump, "") \