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Message-Id: <1520350771-11982-3-git-send-email-atul.gupta@chelsio.com>
Date: Tue, 6 Mar 2018 21:09:25 +0530
From: Atul Gupta <atul.gupta@...lsio.com>
To: davejwatson@...com, davem@...emloft.net,
herbert@...dor.apana.org.au
Cc: linux-crypto@...r.kernel.org, netdev@...r.kernel.org,
ganeshgr@...lsio.com
Subject: [PATCH v9 crypto 06/12] cxgb4: LLD driver changes to enable TLS
Read FW capability. Read key area size. Dump the TLS record count.
Signed-off-by: Atul Gupta <atul.gupta@...lsio.com>
---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 32 +++++---
drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h | 7 ++
drivers/net/ethernet/chelsio/cxgb4/sge.c | 98 ++++++++++++++++++++++++-
3 files changed, 126 insertions(+), 11 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index 56bc626..ab5937e 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -4284,18 +4284,32 @@ static int adap_init0(struct adapter *adap)
adap->num_ofld_uld += 2;
}
if (caps_cmd.cryptocaps) {
- /* Should query params here...TODO */
- params[0] = FW_PARAM_PFVF(NCRYPTO_LOOKASIDE);
- ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2,
- params, val);
- if (ret < 0) {
- if (ret != -EINVAL)
+ if (ntohs(caps_cmd.cryptocaps) &
+ FW_CAPS_CONFIG_CRYPTO_LOOKASIDE) {
+ params[0] = FW_PARAM_PFVF(NCRYPTO_LOOKASIDE);
+ ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
+ 2, params, val);
+ if (ret < 0) {
+ if (ret != -EINVAL)
+ goto bye;
+ } else {
+ adap->vres.ncrypto_fc = val[0];
+ }
+ adap->num_ofld_uld += 1;
+ }
+ if (ntohs(caps_cmd.cryptocaps) &
+ FW_CAPS_CONFIG_TLS_INLINE) {
+ params[0] = FW_PARAM_PFVF(TLS_START);
+ params[1] = FW_PARAM_PFVF(TLS_END);
+ ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
+ 2, params, val);
+ if (ret < 0)
goto bye;
- } else {
- adap->vres.ncrypto_fc = val[0];
+ adap->vres.key.start = val[0];
+ adap->vres.key.size = val[1] - val[0] + 1;
+ adap->num_uld += 1;
}
adap->params.crypto = ntohs(caps_cmd.cryptocaps);
- adap->num_uld += 1;
}
#undef FW_PARAM_PFVF
#undef FW_PARAM_DEV
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
index a14e8db..3d3ef3f 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h
@@ -237,6 +237,7 @@ enum cxgb4_uld {
CXGB4_ULD_ISCSI,
CXGB4_ULD_ISCSIT,
CXGB4_ULD_CRYPTO,
+ CXGB4_ULD_TLS,
CXGB4_ULD_MAX
};
@@ -287,6 +288,7 @@ struct cxgb4_virt_res { /* virtualized HW resources */
struct cxgb4_range qp;
struct cxgb4_range cq;
struct cxgb4_range ocq;
+ struct cxgb4_range key;
unsigned int ncrypto_fc;
};
@@ -298,6 +300,9 @@ struct chcr_stats_debug {
atomic_t error;
atomic_t fallback;
atomic_t ipsec_cnt;
+ atomic_t tls_pdu_tx;
+ atomic_t tls_pdu_rx;
+ atomic_t tls_key;
};
#define OCQ_WIN_OFFSET(pdev, vres) \
@@ -378,6 +383,8 @@ struct cxgb4_uld_info {
int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p);
int cxgb4_unregister_uld(enum cxgb4_uld type);
int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb);
+int cxgb4_immdata_send(struct net_device *dev, unsigned int idx,
+ const void *src, unsigned int len);
int cxgb4_crypto_send(struct net_device *dev, struct sk_buff *skb);
unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo);
unsigned int cxgb4_port_chan(const struct net_device *dev);
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 6e310a0..32e3779 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1740,9 +1740,9 @@ static void txq_stop_maperr(struct sge_uld_txq *q)
* Stops an offload Tx queue that has become full and modifies the packet
* being written to request a wakeup.
*/
-static void ofldtxq_stop(struct sge_uld_txq *q, struct sk_buff *skb)
+static void ofldtxq_stop(struct sge_uld_txq *q, void *src)
{
- struct fw_wr_hdr *wr = (struct fw_wr_hdr *)skb->data;
+ struct fw_wr_hdr *wr = (struct fw_wr_hdr *)src;
wr->lo |= htonl(FW_WR_EQUEQ_F | FW_WR_EQUIQ_F);
q->q.stops++;
@@ -2005,6 +2005,100 @@ int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb)
}
EXPORT_SYMBOL(cxgb4_ofld_send);
+static void *inline_tx_header(const void *src,
+ const struct sge_txq *q,
+ void *pos, int length)
+{
+ u64 *p;
+ int left = (void *)q->stat - pos;
+
+ if (likely(length <= left)) {
+ memcpy(pos, src, length);
+ pos += length;
+ } else {
+ memcpy(pos, src, left);
+ memcpy(q->desc, src + left, length - left);
+ pos = (void *)q->desc + (length - left);
+ }
+ /* 0-pad to multiple of 16 */
+ p = PTR_ALIGN(pos, 8);
+ if ((uintptr_t)p & 8) {
+ *p = 0;
+ return p + 1;
+ }
+ return p;
+}
+
+/**
+ * ofld_xmit_direct - copy a WR into offload queue
+ * @q: the Tx offload queue
+ * @src: location of WR
+ * @len: WR length
+ *
+ * Copy an immediate WR into an uncontended SGE offload queue.
+ */
+static int ofld_xmit_direct(struct sge_uld_txq *q, const void *src,
+ unsigned int len)
+{
+ u64 *pos;
+ int credits;
+ unsigned int ndesc;
+
+ /* Use the lower limit as the cut-off */
+ if (len > MAX_IMM_OFLD_TX_DATA_WR_LEN) {
+ WARN_ON(1);
+ return NET_XMIT_DROP;
+ }
+
+ /* Don't return NET_XMIT_CN here as the current
+ * implementation doesn't queue the request
+ * using an skb when the following conditions not met
+ */
+ if (!spin_trylock(&q->sendq.lock))
+ return NET_XMIT_DROP;
+
+ if (q->full || !skb_queue_empty(&q->sendq) ||
+ q->service_ofldq_running) {
+ spin_unlock(&q->sendq.lock);
+ return NET_XMIT_DROP;
+ }
+ ndesc = flits_to_desc(DIV_ROUND_UP(len, 8));
+ credits = txq_avail(&q->q) - ndesc;
+ pos = (u64 *)&q->q.desc[q->q.pidx];
+
+ /* ofldtxq_stop modifies WR header in-situ */
+ inline_tx_header(src, &q->q, pos, len);
+ if (unlikely(credits < TXQ_STOP_THRES))
+ ofldtxq_stop(q, pos);
+ txq_advance(&q->q, ndesc);
+ cxgb4_ring_tx_db(q->adap, &q->q, ndesc);
+
+ spin_unlock(&q->sendq.lock);
+ return NET_XMIT_SUCCESS;
+}
+
+int cxgb4_immdata_send(struct net_device *dev, unsigned int idx,
+ const void *src, unsigned int len)
+{
+ struct adapter *adap = netdev2adap(dev);
+ struct sge_uld_txq_info *txq_info;
+ struct sge_uld_txq *txq;
+ int ret;
+
+ local_bh_disable();
+ txq_info = adap->sge.uld_txq_info[CXGB4_TX_OFLD];
+ if (unlikely(!txq_info)) {
+ WARN_ON(true);
+ return NET_XMIT_DROP;
+ }
+ txq = &txq_info->uldtxq[idx];
+
+ ret = ofld_xmit_direct(txq, src, len);
+ local_bh_enable();
+ return net_xmit_eval(ret);
+}
+EXPORT_SYMBOL(cxgb4_immdata_send);
+
/**
* t4_crypto_send - send crypto packet
* @adap: the adapter
--
1.8.3.1
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