diff mbox series

[API-NEXT,v2,3/3] linux-gen: pktio: tap: implement MAC address set operation

Message ID 1508400012-1278-4-git-send-email-odpbot@yandex.ru
State New
Headers show
Series [API-NEXT,v2,1/3] linux-gen: pktio: tap: implement start/stop operations | expand

Commit Message

Github ODP bot Oct. 19, 2017, 8 a.m. UTC 
From: Bogdan Pricope <bogdan.pricope@linaro.org>


Implement MAC address set function and set corresponding
capability flag.

Signed-off-by: Bogdan Pricope <bogdan.pricope@linaro.org>

---
/** Email created from pull request 232 (bogdanPricope:tap_set_mac_pr)
 ** https://github.com/Linaro/odp/pull/232
 ** Patch: https://github.com/Linaro/odp/pull/232.patch
 ** Base sha: edca8cd1e55898826f79383b689c2c4bd2c28b3a
 ** Merge commit sha: 89f18d929052add128b4252f5b17907b9a354ccb
 **/
 platform/linux-generic/pktio/tap.c | 36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)
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Patch

diff --git a/platform/linux-generic/pktio/tap.c b/platform/linux-generic/pktio/tap.c
index 2fda0b814..d8b78f3f8 100644
--- a/platform/linux-generic/pktio/tap.c
+++ b/platform/linux-generic/pktio/tap.c
@@ -59,6 +59,29 @@  static int gen_random_mac(unsigned char *mac)
 	return 0;
 }
 
+static int mac_addr_set_fd(int fd, const char *name,
+			   const unsigned char mac_dst[])
+{
+	struct ifreq ethreq;
+	int ret;
+
+	memset(&ethreq, 0, sizeof(ethreq));
+	snprintf(ethreq.ifr_name, IF_NAMESIZE, "%s", name);
+
+	ethreq.ifr_hwaddr.sa_family = AF_UNIX;
+	memcpy(ethreq.ifr_hwaddr.sa_data, mac_dst, ETH_ALEN);
+
+	ret = ioctl(fd, SIOCSIFHWADDR, &ethreq);
+	if (ret != 0) {
+		__odp_errno = errno;
+		ODP_ERR("ioctl(SIOCSIFHWADDR): %s: \"%s\".\n", strerror(errno),
+			ethreq.ifr_name);
+		return -1;
+	}
+
+	return 0;
+}
+
 static int tap_pktio_open(odp_pktio_t id ODP_UNUSED,
 			  pktio_entry_t *pktio_entry,
 			  const char *devname, odp_pool_t pool)
@@ -406,6 +429,16 @@  static int tap_mac_addr_get(pktio_entry_t *pktio_entry, void *mac_addr)
 	return ETH_ALEN;
 }
 
+static int tap_mac_addr_set(pktio_entry_t *pktio_entry, const void *mac_addr)
+{
+	pkt_tap_t *tap = &pktio_entry->s.pkt_tap;
+
+	memcpy(tap->if_mac, mac_addr, ETH_ALEN);
+
+	return mac_addr_set_fd(tap->fd, (char *)pktio_entry->s.name + 4,
+			  tap->if_mac);
+}
+
 static int tap_link_status(pktio_entry_t *pktio_entry)
 {
 	return link_status_fd(pktio_entry->s.pkt_tap.skfd,
@@ -420,6 +453,7 @@  static int tap_capability(pktio_entry_t *pktio_entry ODP_UNUSED,
 	capa->max_input_queues  = 1;
 	capa->max_output_queues = 1;
 	capa->set_op.op.promisc_mode = 1;
+	capa->set_op.op.mac_addr = 1;
 
 	odp_pktio_config_init(&capa->config);
 	capa->config.pktin.bit.ts_all = 1;
@@ -443,7 +477,7 @@  const pktio_if_ops_t tap_pktio_ops = {
 	.promisc_mode_set = tap_promisc_mode_set,
 	.promisc_mode_get = tap_promisc_mode_get,
 	.mac_get = tap_mac_addr_get,
-	.mac_set = NULL,
+	.mac_set = tap_mac_addr_set,
 	.link_status = tap_link_status,
 	.capability = tap_capability,
 	.pktin_ts_res = NULL,