msm: ipa: ipa gsb optimization (ffaf7209) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/platform/msm/ipa/ipa_clients/ipa_gsb.c

+53 −40

Original line number	Original line	Diff line number	Diff line
	@@ -67,7 +67,8 @@
	static char dbg_buff[IPA_GSB_MAX_MSG_LEN];		static char dbg_buff[IPA_GSB_MAX_MSG_LEN];

	#define IPA_GSB_SKB_HEADROOM 256		#define IPA_GSB_SKB_HEADROOM 256
	#define IPA_GSB_AGGR_BYTE_LIMIT 6		#define IPA_GSB_SKB_DUMMY_HEADER 42
			#define IPA_GSB_AGGR_BYTE_LIMIT 14
	#define IPA_GSB_AGGR_TIME_LIMIT 1		#define IPA_GSB_AGGR_TIME_LIMIT 1

	static struct dentry *dent;		static struct dentry *dent;
	@@ -278,22 +279,36 @@ static int ipa_gsb_commit_partial_hdr(struct ipa_gsb_iface_info *iface_info)
	"%s_ipv4", iface_info->netdev_name);		"%s_ipv4", iface_info->netdev_name);
	snprintf(hdr->hdr[1].name, sizeof(hdr->hdr[1].name),		snprintf(hdr->hdr[1].name, sizeof(hdr->hdr[1].name),
	"%s_ipv6", iface_info->netdev_name);		"%s_ipv6", iface_info->netdev_name);
	/* partial header: [hdl][QMAP ID][pkt size][ETH header] */		/*
			* partial header:
			* [hdl][QMAP ID][pkt size][Dummy Header][ETH header]
			*/
	for (i = IPA_IP_v4; i < IPA_IP_MAX; i++) {		for (i = IPA_IP_v4; i < IPA_IP_MAX; i++) {
	hdr->hdr[i].hdr_len = ETH_HLEN + sizeof(struct ipa_gsb_mux_hdr);		/*
			* Optimization: add dummy header to reserve space
			* for rndis header, so we can do the skb_clone
			* instead of deep copy.
			*/
			hdr->hdr[i].hdr_len = ETH_HLEN +
			sizeof(struct ipa_gsb_mux_hdr) +
			IPA_GSB_SKB_DUMMY_HEADER;
	hdr->hdr[i].type = IPA_HDR_L2_ETHERNET_II;		hdr->hdr[i].type = IPA_HDR_L2_ETHERNET_II;
	hdr->hdr[i].is_partial = 1;		hdr->hdr[i].is_partial = 1;
	hdr->hdr[i].is_eth2_ofst_valid = 1;		hdr->hdr[i].is_eth2_ofst_valid = 1;
	hdr->hdr[i].eth2_ofst = sizeof(struct ipa_gsb_mux_hdr);		hdr->hdr[i].eth2_ofst = sizeof(struct ipa_gsb_mux_hdr) +
			IPA_GSB_SKB_DUMMY_HEADER;
	/* populate iface handle */		/* populate iface handle */
	hdr->hdr[i].hdr[0] = iface_info->iface_hdl;		hdr->hdr[i].hdr[0] = iface_info->iface_hdl;
	/* populate src ETH address */		/* populate src ETH address */
	memcpy(&hdr->hdr[i].hdr[10], iface_info->device_ethaddr, 6);		memcpy(&hdr->hdr[i].hdr[10 + IPA_GSB_SKB_DUMMY_HEADER],
			iface_info->device_ethaddr, 6);
	/* populate Ethertype */		/* populate Ethertype */
	if (i == IPA_IP_v4)		if (i == IPA_IP_v4)
	(u16 )(hdr->hdr[i].hdr + 16) = htons(ETH_P_IP);		(u16 )(hdr->hdr[i].hdr + 16 +
			IPA_GSB_SKB_DUMMY_HEADER) = htons(ETH_P_IP);
	else		else
	(u16 )(hdr->hdr[i].hdr + 16) = htons(ETH_P_IPV6);		(u16 )(hdr->hdr[i].hdr + 16 +
			IPA_GSB_SKB_DUMMY_HEADER) = htons(ETH_P_IPV6);
	}		}

	if (ipa_add_hdr(hdr)) {		if (ipa_add_hdr(hdr)) {
	@@ -410,7 +425,7 @@ static void ipa_gsb_pm_cb(void *user_data, enum ipa_pm_cb_event event)
	return;		return;
	}		}

	IPA_GSB_DBG("wake up clients\n");		IPA_GSB_DBG_LOW("wake up clients\n");
	for (i = 0; i < MAX_SUPPORTED_IFACE; i++)		for (i = 0; i < MAX_SUPPORTED_IFACE; i++)
	if (ipa_gsb_ctx->iface[i] != NULL)		if (ipa_gsb_ctx->iface[i] != NULL)
	ipa_gsb_ctx->iface[i]->wakeup_request(		ipa_gsb_ctx->iface[i]->wakeup_request(
	@@ -629,21 +644,6 @@ int ipa_bridge_cleanup(u32 hdl)
	}		}
	EXPORT_SYMBOL(ipa_bridge_cleanup);		EXPORT_SYMBOL(ipa_bridge_cleanup);

	static struct sk_buff ipa_gsb_skb_copy(struct sk_buff skb, int len)
	{
	struct sk_buff *skb2 = NULL;

	skb2 = __dev_alloc_skb(len + IPA_GSB_SKB_HEADROOM, GFP_KERNEL);
	if (likely(skb2)) {
	skb_reserve(skb2, IPA_GSB_SKB_HEADROOM);
	memcpy(skb2->data, skb->data, len);
	skb2->len = len;
	skb_set_tail_pointer(skb2, len);
	}

	return skb2;
	}

	static void ipa_gsb_cons_cb(void *priv, enum ipa_dp_evt_type evt,		static void ipa_gsb_cons_cb(void *priv, enum ipa_dp_evt_type evt,
	unsigned long data)		unsigned long data)
	{		{
	@@ -665,21 +665,33 @@ static void ipa_gsb_cons_cb(void *priv, enum ipa_dp_evt_type evt,
	mux_hdr = (struct ipa_gsb_mux_hdr *)skb->data;		mux_hdr = (struct ipa_gsb_mux_hdr *)skb->data;
	pkt_size = mux_hdr->pkt_size;		pkt_size = mux_hdr->pkt_size;
	/* 4-byte padding */		/* 4-byte padding */
	pad_byte = ((pkt_size + sizeof(*mux_hdr) + ETH_HLEN + 3) & ~3)		pad_byte = ((pkt_size + sizeof(*mux_hdr) + ETH_HLEN +
	- (pkt_size + sizeof(*mux_hdr) + ETH_HLEN);		3 + IPA_GSB_SKB_DUMMY_HEADER) & ~3) -
			(pkt_size + sizeof(*mux_hdr) +
			ETH_HLEN + IPA_GSB_SKB_DUMMY_HEADER);
	hdl = mux_hdr->iface_hdl;		hdl = mux_hdr->iface_hdl;
	IPA_GSB_DBG("pkt_size: %d, pad_byte: %d, hdl: %d\n",		IPA_GSB_DBG_LOW("pkt_size: %d, pad_byte: %d, hdl: %d\n",
	pkt_size, pad_byte, hdl);		pkt_size, pad_byte, hdl);

	/* remove 4 byte mux header */		/* remove 4 byte mux header AND dummy header*/
	skb_pull(skb, sizeof(*mux_hdr));		skb_pull(skb, sizeof(*mux_hdr) + IPA_GSB_SKB_DUMMY_HEADER);
	skb2 = ipa_gsb_skb_copy(skb, pkt_size + ETH_HLEN);
			skb2 = skb_clone(skb, GFP_KERNEL);
			if (!skb2) {
			IPA_GSB_ERR("skb_clone failed\n");
			WARN_ON(1);
			break;
			}
			skb_trim(skb2, pkt_size + ETH_HLEN);
	ipa_gsb_ctx->iface[hdl]->send_dl_skb(		ipa_gsb_ctx->iface[hdl]->send_dl_skb(
	ipa_gsb_ctx->iface[hdl]->priv, skb2);		ipa_gsb_ctx->iface[hdl]->priv, skb2);
	ipa_gsb_ctx->iface[hdl]->iface_stats.num_dl_packets++;		ipa_gsb_ctx->iface[hdl]->iface_stats.num_dl_packets++;

	skb_pull(skb, pkt_size + ETH_HLEN + pad_byte);		skb_pull(skb, pkt_size + ETH_HLEN + pad_byte);
	}		}
			if (skb) {
			dev_kfree_skb_any(skb);
			skb = NULL;
			}
	}		}

	static void ipa_gsb_tx_dp_notify(void *priv, enum ipa_dp_evt_type evt,		static void ipa_gsb_tx_dp_notify(void *priv, enum ipa_dp_evt_type evt,
	@@ -702,7 +714,7 @@ static void ipa_gsb_tx_dp_notify(void *priv, enum ipa_dp_evt_type evt,
	/* change to host order */		/* change to host order */
	(u32 )mux_hdr = ntohl((u32 )mux_hdr);		(u32 )mux_hdr = ntohl((u32 )mux_hdr);
	hdl = mux_hdr->iface_hdl;		hdl = mux_hdr->iface_hdl;
	IPA_GSB_DBG("evt: %d, hdl in tx_dp_notify: %d\n", evt, hdl);		IPA_GSB_DBG_LOW("evt: %d, hdl in tx_dp_notify: %d\n", evt, hdl);

	/* remove 4 byte mux header */		/* remove 4 byte mux header */
	skb_pull(skb, sizeof(struct ipa_gsb_mux_hdr));		skb_pull(skb, sizeof(struct ipa_gsb_mux_hdr));
	@@ -740,7 +752,8 @@ static int ipa_gsb_connect_sys_pipe(void)
	/* configure TX EP */		/* configure TX EP */
	cons_params.client = IPA_CLIENT_ODU_EMB_CONS;		cons_params.client = IPA_CLIENT_ODU_EMB_CONS;
	cons_params.ipa_ep_cfg.hdr.hdr_len =		cons_params.ipa_ep_cfg.hdr.hdr_len =
	ETH_HLEN + sizeof(struct ipa_gsb_mux_hdr);		ETH_HLEN + sizeof(struct ipa_gsb_mux_hdr) +
			IPA_GSB_SKB_DUMMY_HEADER;
	cons_params.ipa_ep_cfg.hdr.hdr_ofst_pkt_size_valid = 1;		cons_params.ipa_ep_cfg.hdr.hdr_ofst_pkt_size_valid = 1;
	cons_params.ipa_ep_cfg.hdr.hdr_ofst_pkt_size = 2;		cons_params.ipa_ep_cfg.hdr.hdr_ofst_pkt_size = 2;
	cons_params.ipa_ep_cfg.hdr_ext.hdr_pad_to_alignment = 2;		cons_params.ipa_ep_cfg.hdr_ext.hdr_pad_to_alignment = 2;
	@@ -911,7 +924,7 @@ int ipa_bridge_resume(u32 hdl)
	return -EFAULT;		return -EFAULT;
	}		}

	IPA_GSB_DBG("client hdl: %d\n", hdl);		IPA_GSB_DBG_LOW("client hdl: %d\n", hdl);

	if (!ipa_gsb_ctx->iface[hdl]->is_connected) {		if (!ipa_gsb_ctx->iface[hdl]->is_connected) {
	IPA_GSB_ERR("iface is not connected\n");		IPA_GSB_ERR("iface is not connected\n");
	@@ -919,7 +932,7 @@ int ipa_bridge_resume(u32 hdl)
	}		}

	if (ipa_gsb_ctx->iface[hdl]->is_resumed) {		if (ipa_gsb_ctx->iface[hdl]->is_resumed) {
	IPA_GSB_DBG("iface was already resumed\n");		IPA_GSB_DBG_LOW("iface was already resumed\n");
	return 0;		return 0;
	}		}

	@@ -946,7 +959,7 @@ int ipa_bridge_resume(u32 hdl)

	ipa_gsb_ctx->iface[hdl]->is_resumed = true;		ipa_gsb_ctx->iface[hdl]->is_resumed = true;
	ipa_gsb_ctx->num_resumed_iface++;		ipa_gsb_ctx->num_resumed_iface++;
	IPA_GSB_DBG("num resumed iface: %d\n",		IPA_GSB_DBG_LOW("num resumed iface: %d\n",
	ipa_gsb_ctx->num_resumed_iface);		ipa_gsb_ctx->num_resumed_iface);

	mutex_unlock(&ipa_gsb_ctx->lock);		mutex_unlock(&ipa_gsb_ctx->lock);
	@@ -963,7 +976,7 @@ int ipa_bridge_suspend(u32 hdl)
	return -EFAULT;		return -EFAULT;
	}		}

	IPA_GSB_DBG("client hdl: %d\n", hdl);		IPA_GSB_DBG_LOW("client hdl: %d\n", hdl);

	if (!ipa_gsb_ctx->iface[hdl]->is_connected) {		if (!ipa_gsb_ctx->iface[hdl]->is_connected) {
	IPA_GSB_ERR("iface is not connected\n");		IPA_GSB_ERR("iface is not connected\n");
	@@ -971,7 +984,7 @@ int ipa_bridge_suspend(u32 hdl)
	}		}

	if (!ipa_gsb_ctx->iface[hdl]->is_resumed) {		if (!ipa_gsb_ctx->iface[hdl]->is_resumed) {
	IPA_GSB_DBG("iface was already suspended\n");		IPA_GSB_DBG_LOW("iface was already suspended\n");
	return 0;		return 0;
	}		}

	@@ -999,7 +1012,7 @@ int ipa_bridge_suspend(u32 hdl)

	ipa_gsb_ctx->iface[hdl]->is_resumed = false;		ipa_gsb_ctx->iface[hdl]->is_resumed = false;
	ipa_gsb_ctx->num_resumed_iface--;		ipa_gsb_ctx->num_resumed_iface--;
	IPA_GSB_DBG("num resumed iface: %d\n",		IPA_GSB_DBG_LOW("num resumed iface: %d\n",
	ipa_gsb_ctx->num_resumed_iface);		ipa_gsb_ctx->num_resumed_iface);

	mutex_unlock(&ipa_gsb_ctx->lock);		mutex_unlock(&ipa_gsb_ctx->lock);
	@@ -1032,11 +1045,11 @@ int ipa_bridge_tx_dp(u32 hdl, struct sk_buff *skb,
	struct sk_buff *skb2;		struct sk_buff *skb2;
	int ret;		int ret;

	IPA_GSB_DBG("client hdl: %d\n", hdl);		IPA_GSB_DBG_LOW("client hdl: %d\n", hdl);

	/* make sure skb has enough headroom */		/* make sure skb has enough headroom */
	if (unlikely(skb_headroom(skb) < sizeof(struct ipa_gsb_mux_hdr))) {		if (unlikely(skb_headroom(skb) < sizeof(struct ipa_gsb_mux_hdr))) {
	IPA_GSB_DBG("skb doesn't have enough headroom\n");		IPA_GSB_DBG_LOW("skb doesn't have enough headroom\n");
	skb2 = skb_copy_expand(skb, sizeof(struct ipa_gsb_mux_hdr),		skb2 = skb_copy_expand(skb, sizeof(struct ipa_gsb_mux_hdr),
	0, GFP_ATOMIC);		0, GFP_ATOMIC);
	if (!skb2) {		if (!skb2) {

drivers/platform/msm/ipa/ipa_v3/ipa_dp.c

+9 −3

Original line number	Original line	Diff line number	Diff line
	@@ -35,6 +35,9 @@
	#define IPA_GENERIC_AGGR_TIME_LIMIT 1		#define IPA_GENERIC_AGGR_TIME_LIMIT 1
	#define IPA_GENERIC_AGGR_PKT_LIMIT 0		#define IPA_GENERIC_AGGR_PKT_LIMIT 0

			#define IPA_GSB_AGGR_BYTE_LIMIT 14
			#define IPA_GSB_RX_BUFF_BASE_SZ 16384

	#define IPA_GENERIC_RX_BUFF_BASE_SZ 8192		#define IPA_GENERIC_RX_BUFF_BASE_SZ 8192
	#define IPA_REAL_GENERIC_RX_BUFF_SZ(X) (SKB_DATA_ALIGN(\		#define IPA_REAL_GENERIC_RX_BUFF_SZ(X) (SKB_DATA_ALIGN(\
	(X) + NET_SKB_PAD) +\		(X) + NET_SKB_PAD) +\
	@@ -2946,11 +2949,14 @@ static int ipa3_assign_policy(struct ipa_sys_connect_params *in,
	/* recycle skb for GSB use case */		/* recycle skb for GSB use case */
	if (ipa3_ctx->ipa_hw_type >= IPA_HW_v4_0) {		if (ipa3_ctx->ipa_hw_type >= IPA_HW_v4_0) {
	sys->free_rx_wrapper =		sys->free_rx_wrapper =
	ipa3_recycle_rx_wrapper;		ipa3_free_rx_wrapper;
	sys->repl_hdlr =		sys->repl_hdlr =
	ipa3_replenish_rx_cache_recycle;		ipa3_replenish_rx_cache;
			/* Overwrite buffer size & aggr limit for GSB */
	sys->rx_buff_sz = IPA_GENERIC_RX_BUFF_SZ(		sys->rx_buff_sz = IPA_GENERIC_RX_BUFF_SZ(
	IPA_GENERIC_RX_BUFF_BASE_SZ);		IPA_GSB_RX_BUFF_BASE_SZ);
			in->ipa_ep_cfg.aggr.aggr_byte_limit =
			IPA_GSB_AGGR_BYTE_LIMIT;
	} else {		} else {
	sys->free_rx_wrapper =		sys->free_rx_wrapper =
	ipa3_free_rx_wrapper;		ipa3_free_rx_wrapper;