Patch Detail

HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 7364,
    "url": "https://patches.dpdk.org/api/patches/7364/?format=api",
    "web_url": "https://patches.dpdk.org/project/dpdk/patch/2e05aa9cb68283eaff787c0fdbbb68c022eb4ef9.1443704150.git.rahul.lakkireddy@chelsio.com/",
    "project": {
        "id": 1,
        "url": "https://patches.dpdk.org/api/projects/1/?format=api",
        "name": "DPDK",
        "link_name": "dpdk",
        "list_id": "dev.dpdk.org",
        "list_email": "dev@dpdk.org",
        "web_url": "http://core.dpdk.org",
        "scm_url": "git://dpdk.org/dpdk",
        "webscm_url": "http://git.dpdk.org/dpdk",
        "list_archive_url": "https://inbox.dpdk.org/dev",
        "list_archive_url_format": "https://inbox.dpdk.org/dev/{}",
        "commit_url_format": ""
    },
    "msgid": "<2e05aa9cb68283eaff787c0fdbbb68c022eb4ef9.1443704150.git.rahul.lakkireddy@chelsio.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/2e05aa9cb68283eaff787c0fdbbb68c022eb4ef9.1443704150.git.rahul.lakkireddy@chelsio.com",
    "date": "2015-10-02T11:16:53",
    "name": "[dpdk-dev,4/6] cxgbe: Update rx path to receive jumbo frames",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": true,
    "hash": "913457b176019e0b44cbaceb5b8b26d77881587c",
    "submitter": {
        "id": 241,
        "url": "https://patches.dpdk.org/api/people/241/?format=api",
        "name": "Rahul Lakkireddy",
        "email": "rahul.lakkireddy@chelsio.com"
    },
    "delegate": null,
    "mbox": "https://patches.dpdk.org/project/dpdk/patch/2e05aa9cb68283eaff787c0fdbbb68c022eb4ef9.1443704150.git.rahul.lakkireddy@chelsio.com/mbox/",
    "series": [],
    "comments": "https://patches.dpdk.org/api/patches/7364/comments/",
    "check": "pending",
    "checks": "https://patches.dpdk.org/api/patches/7364/checks/",
    "tags": {},
    "related": [],
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@dpdk.org",
        "Delivered-To": "patchwork@dpdk.org",
        "Received": [
            "from [92.243.14.124] (localhost [IPv6:::1])\n\tby dpdk.org (Postfix) with ESMTP id E92438E8A;\n\tFri,  2 Oct 2015 13:17:41 +0200 (CEST)",
            "from stargate3.asicdesigners.com (stargate.chelsio.com\n\t[67.207.112.58]) by dpdk.org (Postfix) with ESMTP id DDC228E89\n\tfor <dev@dpdk.org>; Fri,  2 Oct 2015 13:17:39 +0200 (CEST)",
            "from localhost (scalar.blr.asicdesigners.com [10.193.185.94])\n\tby stargate3.asicdesigners.com (8.13.8/8.13.8) with ESMTP id\n\tt92BHaTp005250; Fri, 2 Oct 2015 04:17:37 -0700"
        ],
        "From": "Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>",
        "To": "dev@dpdk.org",
        "Date": "Fri,  2 Oct 2015 16:46:53 +0530",
        "Message-Id": "<2e05aa9cb68283eaff787c0fdbbb68c022eb4ef9.1443704150.git.rahul.lakkireddy@chelsio.com>",
        "X-Mailer": "git-send-email 2.5.3",
        "In-Reply-To": [
            "<cover.1443704150.git.rahul.lakkireddy@chelsio.com>",
            "<cover.1443704150.git.rahul.lakkireddy@chelsio.com>"
        ],
        "References": [
            "<cover.1443704150.git.rahul.lakkireddy@chelsio.com>",
            "<cover.1443704150.git.rahul.lakkireddy@chelsio.com>"
        ],
        "Cc": "Kumar Sanghvi <kumaras@chelsio.com>, Felix Marti <felix@chelsio.com>,\n\tNirranjan Kirubaharan <nirranjan@chelsio.com>",
        "Subject": "[dpdk-dev] [PATCH 4/6] cxgbe: Update rx path to receive jumbo frames",
        "X-BeenThere": "dev@dpdk.org",
        "X-Mailman-Version": "2.1.15",
        "Precedence": "list",
        "List-Id": "patches and discussions about DPDK <dev.dpdk.org>",
        "List-Unsubscribe": "<http://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>",
        "List-Archive": "<http://dpdk.org/ml/archives/dev/>",
        "List-Post": "<mailto:dev@dpdk.org>",
        "List-Help": "<mailto:dev-request@dpdk.org?subject=help>",
        "List-Subscribe": "<http://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>",
        "Errors-To": "dev-bounces@dpdk.org",
        "Sender": "\"dev\" <dev-bounces@dpdk.org>"
    },
    "content": "Ensure jumbo mode is enabled and that the mbuf data room size can\naccommodate jumbo size.  If the mbuf data room size can't accommodate\njumbo size, chain mbufs to jumbo size.\n\nSigned-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>\nSigned-off-by: Kumar Sanghvi <kumaras@chelsio.com>\n---\n drivers/net/cxgbe/sge.c | 58 ++++++++++++++++++++++++++++++++++++++++++++-----\n 1 file changed, 53 insertions(+), 5 deletions(-)",
    "diff": "diff --git a/drivers/net/cxgbe/sge.c b/drivers/net/cxgbe/sge.c\nindex 921173a..91ef363 100644\n--- a/drivers/net/cxgbe/sge.c\n+++ b/drivers/net/cxgbe/sge.c\n@@ -247,6 +247,29 @@ static inline bool fl_starving(const struct adapter *adapter,\n \treturn fl->avail - fl->pend_cred <= s->fl_starve_thres;\n }\n \n+static inline unsigned int get_buf_size(struct adapter *adapter,\n+\t\t\t\t\tconst struct rx_sw_desc *d)\n+{\n+\tunsigned int rx_buf_size_idx = d->dma_addr & RX_BUF_SIZE;\n+\tunsigned int buf_size = 0;\n+\n+\tswitch (rx_buf_size_idx) {\n+\tcase RX_SMALL_MTU_BUF:\n+\t\tbuf_size = FL_MTU_SMALL_BUFSIZE(adapter);\n+\t\tbreak;\n+\n+\tcase RX_LARGE_MTU_BUF:\n+\t\tbuf_size = FL_MTU_LARGE_BUFSIZE(adapter);\n+\t\tbreak;\n+\n+\tdefault:\n+\t\tBUG_ON(1);\n+\t\t/* NOT REACHED */\n+\t}\n+\n+\treturn buf_size;\n+}\n+\n /**\n  * free_rx_bufs - free the Rx buffers on an SGE free list\n  * @q: the SGE free list to free buffers from\n@@ -362,6 +385,14 @@ static unsigned int refill_fl_usembufs(struct adapter *adap, struct sge_fl *q,\n \tunsigned int buf_size_idx = RX_SMALL_MTU_BUF;\n \tstruct rte_mbuf *buf_bulk[n];\n \tint ret, i;\n+\tstruct rte_pktmbuf_pool_private *mbp_priv;\n+\tu8 jumbo_en = rxq->rspq.eth_dev->data->dev_conf.rxmode.jumbo_frame;\n+\n+\t/* Use jumbo mtu buffers iff mbuf data room size can fit jumbo data. */\n+\tmbp_priv = rte_mempool_get_priv(rxq->rspq.mb_pool);\n+\tif (jumbo_en &&\n+\t    ((mbp_priv->mbuf_data_room_size - RTE_PKTMBUF_HEADROOM) >= 9000))\n+\t\tbuf_size_idx = RX_LARGE_MTU_BUF;\n \n \tret = rte_mempool_get_bulk(rxq->rspq.mb_pool, (void *)buf_bulk, n);\n \tif (unlikely(ret != 0)) {\n@@ -1439,14 +1470,31 @@ static int process_responses(struct sge_rspq *q, int budget,\n \t\t\tconst struct cpl_rx_pkt *cpl =\n \t\t\t\t\t\t(const void *)&q->cur_desc[1];\n \t\t\tbool csum_ok = cpl->csum_calc && !cpl->err_vec;\n-\t\t\tstruct rte_mbuf *pkt;\n-\t\t\tu32 len = ntohl(rc->pldbuflen_qid);\n+\t\t\tstruct rte_mbuf *pkt, *npkt;\n+\t\t\tu32 len, bufsz;\n \n+\t\t\tlen = ntohl(rc->pldbuflen_qid);\n \t\t\tBUG_ON(!(len & F_RSPD_NEWBUF));\n \t\t\tpkt = rsd->buf;\n-\t\t\tpkt->data_len = G_RSPD_LEN(len);\n-\t\t\tpkt->pkt_len = pkt->data_len;\n-\t\t\tunmap_rx_buf(&rxq->fl);\n+\t\t\tnpkt = pkt;\n+\t\t\tlen = G_RSPD_LEN(len);\n+\t\t\tpkt->pkt_len = len;\n+\n+\t\t\t/* Chain mbufs into len if necessary */\n+\t\t\twhile (len) {\n+\t\t\t\tstruct rte_mbuf *new_pkt = rsd->buf;\n+\n+\t\t\t\tbufsz = min(get_buf_size(q->adapter, rsd), len);\n+\t\t\t\tnew_pkt->data_len = bufsz;\n+\t\t\t\tunmap_rx_buf(&rxq->fl);\n+\t\t\t\tlen -= bufsz;\n+\t\t\t\tnpkt->next = new_pkt;\n+\t\t\t\tnpkt = new_pkt;\n+\t\t\t\tpkt->nb_segs++;\n+\t\t\t\trsd = &rxq->fl.sdesc[rxq->fl.cidx];\n+\t\t\t}\n+\t\t\tnpkt->next = NULL;\n+\t\t\tpkt->nb_segs--;\n \n \t\t\tif (cpl->l2info & htonl(F_RXF_IP)) {\n \t\t\t\tpkt->packet_type = RTE_PTYPE_L3_IPV4;\n",
    "prefixes": [
        "dpdk-dev",
        "4/6"
    ]
}