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Date: Wed, 13 Apr 2022 22:47:41 +0200 From: "Andrea Parri (Microsoft)" <parri.andrea@...il.com> To: KY Srinivasan <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Stephen Hemminger <sthemmin@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>, Michael Kelley <mikelley@...rosoft.com>, Stefano Garzarella <sgarzare@...hat.com>, David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: linux-hyperv@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, "Andrea Parri (Microsoft)" <parri.andrea@...il.com> Subject: [RFC PATCH 5/6] Drivers: hv: vmbus: Accept hv_sock offers in isolated guests So that isolated guests can communicate with the host via hv_sock channels. Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@...il.com> --- drivers/hv/channel_mgmt.c | 9 +++++++-- include/linux/hyperv.h | 8 ++++++-- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 67be81208a2d9..83d7ab90b7305 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -976,17 +976,22 @@ find_primary_channel_by_offer(const struct vmbus_channel_offer_channel *offer) return channel; } -static bool vmbus_is_valid_device(const guid_t *guid) +static bool vmbus_is_valid_offer(const struct vmbus_channel_offer_channel *offer) { + const guid_t *guid = &offer->offer.if_type; u16 i; if (!hv_is_isolation_supported()) return true; + if (is_hvsock_offer(offer)) + return true; + for (i = 0; i < ARRAY_SIZE(vmbus_devs); i++) { if (guid_equal(guid, &vmbus_devs[i].guid)) return vmbus_devs[i].allowed_in_isolated; } + return false; } @@ -1004,7 +1009,7 @@ static void vmbus_onoffer(struct vmbus_channel_message_header *hdr) trace_vmbus_onoffer(offer); - if (!vmbus_is_valid_device(&offer->offer.if_type)) { + if (!vmbus_is_valid_offer(offer)) { pr_err_ratelimited("Invalid offer %d from the host supporting isolation\n", offer->child_relid); atomic_dec(&vmbus_connection.offer_in_progress); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 55478a6810b60..1112c5cf894e6 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1044,10 +1044,14 @@ struct vmbus_channel { u64 vmbus_next_request_id(struct vmbus_channel *channel, u64 rqst_addr); u64 vmbus_request_addr(struct vmbus_channel *channel, u64 trans_id); +static inline bool is_hvsock_offer(const struct vmbus_channel_offer_channel *o) +{ + return !!(o->offer.chn_flags & VMBUS_CHANNEL_TLNPI_PROVIDER_OFFER); +} + static inline bool is_hvsock_channel(const struct vmbus_channel *c) { - return !!(c->offermsg.offer.chn_flags & - VMBUS_CHANNEL_TLNPI_PROVIDER_OFFER); + return is_hvsock_offer(&c->offermsg); } static inline bool is_sub_channel(const struct vmbus_channel *c) -- 2.25.1
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