STRUCT IPC_SKB_CB(9)

hey bestie 💖 welcome to the struct ipc_skb_cb(9) page in the Kernel API Manual ✨ this one’s all about the socket buffer struct that gets mapped to the cb field of sbk, and it’s lowkey a tiny icon 👑

🌸 NAME 🌸

okay so struct ipc_skb_cb is literally the struct definition of the socket buffer which is mapped to the cb field of sbk 💅

✨ SYNOPSIS ✨

struct ipc_skb_cb {
    dma_addr_t mapping;
    int direction;
    int len;
    u8 op_type;
 };

🎀 Members 🎀

• mapping — Store physical or IOVA mapped address of skb virtual add. 🦋
• direction — DMA direction.
• len — Length of the DMA mapped region.
• op_type — Expected values are defined about enum ipc_ul_usr_op.

🌈 SEE ALSO 🌈

Kernel file ./drivers/net/wwan/iosm/iosm_ipc_pcie.h enum ipc_pcie_sleep_state(9), struct iosm_pcie(9), enum ipc_ul_usr_op(9), ipc_pcie_addr_map(9), ipc_pcie_addr_unmap(9), ipc_pcie_alloc_skb(9), ipc_pcie_alloc_local_skb(9), ipc_pcie_kfree_skb(9), ipc_pcie_check_data_link_active(9), ipc_pcie_suspend(9), ipc_pcie_resume(9), ipc_pcie_check_aspm_enabled(9), ipc_pcie_config_aspm(9).

mwah 💋 source/version tag: ./drivers/net/wwan/iosm • date: October 2026 • title: struct ipc_skb_cb(9) — bestie, that’s the whole page, periodt 🫶💖