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iptuntap: allow creation of multi-queue tun/tap device 

This patch adds multi_queue option to ip tuntap.
This allows IFF_MULTI_QUEUE flag to be specified during
tun/tap device creation enabling multi-queue support in tun/tap
device.

Example: ip tuntap add dev tap0 mode tap multi_queue

Signed-off-by: Sriram Narasimhan <sriram.narasimhan@hp.com>
This commit is contained in:
Sriram Narasimhan 2013-05-23 12:36:29 +00:00 committed by Stephen Hemminger
parent f3c2f91e22
commit c41e038f48
1 changed files with 3 additions and 1 deletions
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4
ip/iptuntap.c
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@ -38,7 +38,7 @@ static void usage(void)
{
fprintf(stderr, "Usage: ip tuntap { add | del } [ dev PHYS_DEV ] \n");
fprintf(stderr, " [ mode { tun | tap } ] [ user USER ] [ group GROUP ]\n");
fprintf(stderr, " [ one_queue ] [ pi ] [ vnet_hdr ]\n");
fprintf(stderr, " [ one_queue ] [ pi ] [ vnet_hdr ] [ multi_queue ]\n");
fprintf(stderr, "\n");
fprintf(stderr, "Where: USER := { STRING | NUMBER }\n");
fprintf(stderr, " GROUP := { STRING | NUMBER }\n");
@ -168,6 +168,8 @@ static int parse_args(int argc, char **argv, struct ifreq *ifr, uid_t *uid, gid_
ifr->ifr_flags |= IFF_ONE_QUEUE;
} else if (matches(*argv, "vnet_hdr") == 0) {
ifr->ifr_flags |= IFF_VNET_HDR;
} else if (matches(*argv, "multi_queue") == 0) {
ifr->ifr_flags |= IFF_MULTI_QUEUE;
} else if (matches(*argv, "dev") == 0) {
NEXT_ARG();
strncpy(ifr->ifr_name, *argv, IFNAMSIZ-1);