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net/tap: fix build with old kernels

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IFF_MULTI_QUEUE does not exist in older kernels:
drivers/net/tap/rte_eth_tap.c:143:19: error: ‘IFF_MULTI_QUEUE’ undeclared

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Keith Wiles 2017-01-20 08:30:25 -06:00 committed by Thomas Monjalon
parent 2ee926f1fd
commit b0120a300b
1 changed files with 10 additions and 0 deletions
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10
drivers/net/tap/rte_eth_tap.c
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@ -140,6 +140,7 @@ tun_alloc(char *name)
}
RTE_LOG(DEBUG, PMD, "TUN/TAP Features %08x\n", features);
#ifdef IFF_MULTI_QUEUE
if (!(features & IFF_MULTI_QUEUE) && (RTE_PMD_TAP_MAX_QUEUES > 1)) {
RTE_LOG(DEBUG, PMD, "TUN/TAP device only one queue\n");
goto error;
@ -152,6 +153,15 @@ tun_alloc(char *name)
RTE_LOG(DEBUG, PMD, "Multi-queue support for %d queues\n",
RTE_PMD_TAP_MAX_QUEUES);
}
#else
if (RTE_PMD_TAP_MAX_QUEUES > 1) {
RTE_LOG(DEBUG, PMD, "TUN/TAP device only one queue\n");
goto error;
} else {
ifr.ifr_flags |= IFF_ONE_QUEUE;
RTE_LOG(DEBUG, PMD, "Single queue only support\n");
}
#endif
/* Set the TUN/TAP configuration and get the name if needed */
if (ioctl(fd, TUNSETIFF, (void *)&ifr) < 0) {