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msm: ipa: Checksum validation changes

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Change DL/UL WAN pipe configurations for CS offload.
Add new 8 bytes qmap header for DL CS offload.
Add a CS offload enum for QMAP_DL cS offload.

Change-Id: If23ed20a797db143da6dca61fa4c3080a347af1d
Signed-off-by: Michael Adisumarta <madisuma@codeaurora.org>
This commit is contained in:
Michael Adisumarta 2018-11-12 16:03:15 -08:00 committed by Gerrit - the friendly Code Review server
parent f43dabe3d7
commit ddcc96409e
4 changed files with 43 additions and 5 deletions
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3
drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal.c
View File

@ -978,6 +978,9 @@ static void ipa_pkt_status_parse(
else
exception_type = IPAHAL_PKT_STATUS_EXCEPTION_NAT;
break;
case 229:
exception_type = IPAHAL_PKT_STATUS_EXCEPTION_CSUM;
break;
default:
IPAHAL_ERR("unsupported Status Exception type 0x%x\n",
hw_status->exception);

1
drivers/platform/msm/ipa/ipa_v3/ipahal/ipahal.h
View File

@ -444,6 +444,7 @@ enum ipahal_pkt_status_exception {
*/
IPAHAL_PKT_STATUS_EXCEPTION_NAT,
IPAHAL_PKT_STATUS_EXCEPTION_IPV6CT,
IPAHAL_PKT_STATUS_EXCEPTION_CSUM,
IPAHAL_PKT_STATUS_EXCEPTION_MAX,
};

37
drivers/platform/msm/ipa/ipa_v3/rmnet_ipa.c
View File

@ -194,7 +194,23 @@ static int ipa3_setup_a7_qmap_hdr(void)
strlcpy(hdr_entry->name, IPA_A7_QMAP_HDR_NAME,
IPA_RESOURCE_NAME_MAX);
hdr_entry->hdr_len = IPA_QMAP_HEADER_LENGTH; /* 4 bytes */
if (ipa3_ctx->ipa_hw_type >= IPA_HW_v4_5) {
hdr_entry->hdr_len = IPA_DL_CHECKSUM_LENGTH; /* 8 bytes */
/* new DL QMAP header format */
hdr->hdr[0].hdr[0] = 0x40;
hdr->hdr[0].hdr[1] = 0;
hdr->hdr[0].hdr[2] = 0;
hdr->hdr[0].hdr[3] = 0;
hdr->hdr[0].hdr[4] = 0x4;
/*
* Need to set csum required/valid bit on which will be replaced
* by HW if checksum is incorrect after validation
*/
hdr->hdr[0].hdr[5] = 0x80;
hdr->hdr[0].hdr[6] = 0;
hdr->hdr[0].hdr[7] = 0;
} else
hdr_entry->hdr_len = IPA_QMAP_HEADER_LENGTH; /* 4 bytes */
if (ipa3_add_hdr(hdr)) {
IPAWANERR("fail to add IPA_A7_QMAP hdr\n");
@ -1302,9 +1318,15 @@ static int handle3_ingress_format(struct net_device *dev,
}
ipa_wan_ep_cfg = &rmnet_ipa3_ctx->ipa_to_apps_ep_cfg;
if ((in->u.data) & RMNET_IOCTL_INGRESS_FORMAT_CHECKSUM)
ipa_wan_ep_cfg->ipa_ep_cfg.cfg.cs_offload_en =
IPA_ENABLE_CS_OFFLOAD_DL;
if ((in->u.data) & RMNET_IOCTL_INGRESS_FORMAT_CHECKSUM) {
if (ipa3_ctx->ipa_hw_type >= IPA_HW_v4_5)
ipa_wan_ep_cfg->ipa_ep_cfg.cfg.cs_offload_en =
IPA_ENABLE_CS_DL_QMAP;
else
ipa_wan_ep_cfg->ipa_ep_cfg.cfg.cs_offload_en =
IPA_ENABLE_CS_OFFLOAD_DL;
IPAWANDBG("DL chksum set\n");
}
if ((in->u.data) & RMNET_IOCTL_INGRESS_FORMAT_AGG_DATA) {
IPAWANDBG("get AGG size %d count %d\n",
@ -1323,7 +1345,11 @@ static int handle3_ingress_format(struct net_device *dev,
}
}
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_len = 4;
if (ipa3_ctx->ipa_hw_type >= IPA_HW_v4_5 &&
(in->u.data) & RMNET_IOCTL_INGRESS_FORMAT_CHECKSUM)
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_len = 8;
else
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_len = 4;
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_ofst_metadata_valid = 1;
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_ofst_metadata = 1;
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_ofst_pkt_size_valid = 1;
@ -1389,6 +1415,7 @@ static int handle3_egress_format(struct net_device *dev,
ipa_wan_ep_cfg = &rmnet_ipa3_ctx->apps_to_ipa_ep_cfg;
if ((e->u.data) & RMNET_IOCTL_EGRESS_FORMAT_CHECKSUM) {
IPAWANDBG("UL chksum set\n");
ipa_wan_ep_cfg->ipa_ep_cfg.hdr.hdr_len = 8;
ipa_wan_ep_cfg->ipa_ep_cfg.cfg.cs_offload_en =
IPA_ENABLE_CS_OFFLOAD_UL;

7
include/linux/ipa.h
View File

@ -373,7 +373,14 @@ struct ipa_ep_cfg_deaggr {
*/
enum ipa_cs_offload {
IPA_DISABLE_CS_OFFLOAD,
/*
* For enum value = 1, we check the csum required/valid bit which is the
* same bit used for both DL and UL but have different meanings.
* For UL pipe, HW checks if it needs to perform Csum caluclation.
* For DL pipe, HW checks if the csum is valid or invalid
*/
IPA_ENABLE_CS_OFFLOAD_UL,
IPA_ENABLE_CS_DL_QMAP = IPA_ENABLE_CS_OFFLOAD_UL,
IPA_ENABLE_CS_OFFLOAD_DL,
IPA_CS_RSVD
};