Hi Greg,

below is a backport for upstream patch fd87b7783802 ("net: Fix the devmem sock opts and msgs for parisc").

This upstream patch does not apply cleanly against v6.13, and backporting all intermediate changes are too big, so I created this trivial standalone patch instead.

Can you please add the patch below to the stable queue for v6.13?

Thanks! Helge

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From: Pranjal Shrivastava praan@google.com Date: Mon, 24 Mar 2025 07:42:27 +0000 Subject: [PATCH] net: Fix the devmem sock opts and msgs for parisc

The devmem socket options and socket control message definitions introduced in the TCP devmem series[1] incorrectly continued the socket definitions for arch/parisc.

The UAPI change seems safe as there are currently no drivers that declare support for devmem TCP RX via PP_FLAG_ALLOW_UNREADABLE_NETMEM. Hence, fixing this UAPI should be safe.

Fix the devmem socket options and socket control message definitions to reflect the series followed by arch/parisc.

[1] https://lore.kernel.org/lkml/20240910171458.219195-10-almasrymina@google.com...

Patch modified for kernel 6.13 by Helge Deller.

Fixes: 8f0b3cc9a4c10 ("tcp: RX path for devmem TCP") Signed-off-by: Pranjal Shrivastava praan@google.com Signed-off-by: Helge Deller deller@gmx.de

diff --git b/arch/parisc/include/uapi/asm/socket.h a/arch/parisc/include/uapi/asm/socket.h index d268d69bfcd2..96831c988606 100644 --- b/arch/parisc/include/uapi/asm/socket.h +++ a/arch/parisc/include/uapi/asm/socket.h @@ -132,13 +132,15 @@ #define SO_PASSPIDFD 0x404A #define SO_PEERPIDFD 0x404B

-#define SO_DEVMEM_LINEAR 78 +#define SCM_TS_OPT_ID 0x404C + +#define SO_RCVPRIORITY 0x404D + +#define SO_DEVMEM_LINEAR 0x404E #define SCM_DEVMEM_LINEAR SO_DEVMEM_LINEAR -#define SO_DEVMEM_DMABUF 79 +#define SO_DEVMEM_DMABUF 0x404F #define SCM_DEVMEM_DMABUF SO_DEVMEM_DMABUF -#define SO_DEVMEM_DONTNEED 80 - -#define SCM_TS_OPT_ID 0x404C +#define SO_DEVMEM_DONTNEED 0x4050

#if !defined(__KERNEL__)