6.6-stable review patch. If anyone has any objections, please let me know.
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From: Michael Kelley mhklinux@outlook.com
commit 5bbc644bbf4e97a05bc0cb052189004588ff8a09 upstream.
init_page_array() now always creates a single page buffer array entry for the rndis message, even if the rndis message crosses a page boundary. As such, the number of page buffer array entries used for the rndis message must no longer be tracked -- it is always just 1. Remove the rmsg_pgcnt field and use "1" where the value is needed.
Cc: stable@vger.kernel.org # 6.1.x Signed-off-by: Michael Kelley mhklinux@outlook.com Link: https://patch.msgid.link/20250513000604.1396-5-mhklinux@outlook.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/hyperv/hyperv_net.h | 1 - drivers/net/hyperv/netvsc.c | 7 +++---- drivers/net/hyperv/netvsc_drv.c | 1 - 3 files changed, 3 insertions(+), 6 deletions(-)
--- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -158,7 +158,6 @@ struct hv_netvsc_packet { u8 cp_partial; /* partial copy into send buffer */
u8 rmsg_size; /* RNDIS header and PPI size */ - u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */ u8 page_buf_cnt;
u16 q_idx; --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -945,8 +945,7 @@ static void netvsc_copy_to_send_buf(stru + pend_size; int i; u32 padding = 0; - u32 page_count = packet->cp_partial ? packet->rmsg_pgcnt : - packet->page_buf_cnt; + u32 page_count = packet->cp_partial ? 1 : packet->page_buf_cnt; u32 remain;
/* Add padding */ @@ -1129,7 +1128,7 @@ static inline int netvsc_send_pkt( u32 desc_size;
if (packet->cp_partial) - pb += packet->rmsg_pgcnt; + pb++;
ret = netvsc_dma_map(ndev_ctx->device_ctx, packet, pb); if (ret) { @@ -1291,7 +1290,7 @@ int netvsc_send(struct net_device *ndev, packet->send_buf_index = section_index;
if (packet->cp_partial) { - packet->page_buf_cnt -= packet->rmsg_pgcnt; + packet->page_buf_cnt--; packet->total_data_buflen = msd_len + packet->rmsg_size; } else { packet->page_buf_cnt = 0; --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -342,7 +342,6 @@ static u32 init_page_array(void *hdr, u3 pb[0].len = len; pb[0].pfn = virt_to_hvpfn(hdr); packet->rmsg_size = len; - packet->rmsg_pgcnt = 1;
pb[1].offset = offset_in_hvpage(skb->data); pb[1].len = skb_headlen(skb);