From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH] net/kni: calc mbuf&mtu according to given mb_pool Date: Thu, 21 Feb 2019 10:47:35 +0200 Message-ID: <1550738855-11107-1-git-send-email-lironh@marvell.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , Liron Himi To: Return-path: Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by dpdk.org (Postfix) with ESMTP id EAB721E34 for ; Thu, 21 Feb 2019 07:36:46 +0100 (CET) List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Liron Himi - mbuf_size and mtu are now being calculated according to the given mb-pool. - max_mtu is now being set according to the given mtu the above two changes provide the ability to work with jumbo frames Signed-off-by: Liron Himi --- drivers/net/kni/rte_eth_kni.c | 10 +++++++--- kernel/linux/kni/kni_misc.c | 1 + 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/kni/rte_eth_kni.c b/drivers/net/kni/rte_eth_kni.c index a1e9970..5e02224 100644 --- a/drivers/net/kni/rte_eth_kni.c +++ b/drivers/net/kni/rte_eth_kni.c @@ -16,9 +16,11 @@ /* Only single queue supported */ #define KNI_MAX_QUEUE_PER_PORT 1 -#define MAX_PACKET_SZ 2048 #define MAX_KNI_PORTS 8 +#define KNI_ETHER_MTU(mbuf_size) \ + ((mbuf_size) - ETHER_HDR_LEN) /**< Ethernet MTU. */ + #define ETH_KNI_NO_REQUEST_THREAD_ARG "no_request_thread" static const char * const valid_arguments[] = { ETH_KNI_NO_REQUEST_THREAD_ARG, @@ -123,11 +125,13 @@ eth_kni_start(struct rte_eth_dev *dev) struct rte_kni_conf conf; const char *name = dev->device->name + 4; /* remove net_ */ + mb_pool = internals->rx_queues[0].mb_pool; snprintf(conf.name, RTE_KNI_NAMESIZE, "%s", name); conf.force_bind = 0; conf.group_id = port_id; - conf.mbuf_size = MAX_PACKET_SZ; - mb_pool = internals->rx_queues[0].mb_pool; + conf.mbuf_size = + rte_pktmbuf_data_room_size(mb_pool) - RTE_PKTMBUF_HEADROOM; + conf.mtu = KNI_ETHER_MTU(conf.mbuf_size); internals->kni = rte_kni_alloc(mb_pool, &conf, NULL); if (internals->kni == NULL) { diff --git a/kernel/linux/kni/kni_misc.c b/kernel/linux/kni/kni_misc.c index 522ae23..9dac16d 100644 --- a/kernel/linux/kni/kni_misc.c +++ b/kernel/linux/kni/kni_misc.c @@ -459,6 +459,7 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num, if (dev_info.mtu) net_dev->mtu = dev_info.mtu; + net_dev->max_mtu = net_dev->mtu; ret = register_netdev(net_dev); if (ret) { -- 2.7.4