From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: RHEL Ninjas Date: Fri, 25 Sep 2015 16:24:23 +0900 Subject: [PATCH] efinet: add filter for the first exclusive reopen of SNP --- grub-core/net/drivers/efi/efinet.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/grub-core/net/drivers/efi/efinet.c b/grub-core/net/drivers/efi/efinet.c index a3ce4c67cce..b870d3f1938 100644 --- a/grub-core/net/drivers/efi/efinet.c +++ b/grub-core/net/drivers/efi/efinet.c @@ -465,6 +465,45 @@ grub_efi_net_config_real (grub_efi_handle_t hnd, char **device, &pxe_mode->dhcp_ack, sizeof (pxe_mode->dhcp_ack), 1, device, path); + net = grub_efi_open_protocol (card->efi_handle, &net_io_guid, + GRUB_EFI_OPEN_PROTOCOL_BY_EXCLUSIVE); + if (net) { + if (net->mode->state == GRUB_EFI_NETWORK_STOPPED + && efi_call_1 (net->start, net) != GRUB_EFI_SUCCESS) + continue; + + if (net->mode->state == GRUB_EFI_NETWORK_STOPPED) + continue; + + if (net->mode->state == GRUB_EFI_NETWORK_STARTED + && efi_call_3 (net->initialize, net, 0, 0) != GRUB_EFI_SUCCESS) + continue; + + /* Enable hardware receive filters if driver declares support for it. + We need unicast and broadcast and additionaly all nodes and + solicited multicast for IPv6. Solicited multicast is per-IPv6 + address and we currently do not have API to do it so simply + try to enable receive of all multicast packets or evertyhing in + the worst case (i386 PXE driver always enables promiscuous too). + + This does trust firmware to do what it claims to do. + */ + if (net->mode->receive_filter_mask) + { + grub_uint32_t filters = GRUB_EFI_SIMPLE_NETWORK_RECEIVE_UNICAST | + GRUB_EFI_SIMPLE_NETWORK_RECEIVE_BROADCAST | + GRUB_EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST; + + filters &= net->mode->receive_filter_mask; + if (!(filters & GRUB_EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS_MULTICAST)) + filters |= (net->mode->receive_filter_mask & + GRUB_EFI_SIMPLE_NETWORK_RECEIVE_PROMISCUOUS); + + efi_call_6 (net->receive_filters, net, filters, 0, 0, 0, NULL); + } + + card->efi_net = net; + } return; } }