iscsi_tcp_hdr_dissect(9)

hii bestie, welcome to the Kernel API Manual ✨ today’s main character is iscsi_tcp_hdr_dissect(9), and the vibe check is: PDU header processing, no cap. 💅

🎀 NAME 🎀

iscsi_tcp_hdr_dissect — process PDU header. literally that. it processes the PDU header and it’s iconic for it. 👑

🦋 SYNOPSIS 🦋

int iscsi_tcp_hdr_dissect (struct iscsi_conn *conn , struct iscsi_hdr *hdr );

🌸 ARGUMENTS 🌸

• conn — iSCSI connection. your connection bestie. 🫶
• hdr — PDU header. the header in question, periodt. 👑

💖 DESCRIPTION 💖

okay so this function is lowkey the header detective: it analyzes the header of the PDU received and performs several sanity checks. 🧚

and if the PDU is accompanied by data? the receive buffer is set up to copy the incoming data to the correct location. the way that’s literally the whole job. slay. 🔥

no cap, that’s the entire behavior — sanity checks and receive-buffer setup when data comes along. 💜

🌈 SEE ALSO 🌈

• Kernel file ./drivers/scsi/libiscsi_tcp.c — go look, iykyk. 🦋
• iscsi_tcp_segment_init_sg(9)
• iscsi_tcp_segment_map(9)
• iscsi_tcp_segment_done(9)
• iscsi_tcp_segment_recv(9)
• iscsi_tcp_hdr_recv_prep(9)
• iscsi_tcp_cleanup_task(9)
• iscsi_tcp_data_in(9)
• iscsi_tcp_r2t_rsp(9)
• iscsi_tcp_hdr_recv_done(9)
• iscsi_tcp_recv_segment_is_hdr(9)
• iscsi_tcp_recv_skb(9)
• iscsi_tcp_task_init(9)
• iscsi_tcp_task_xmit(9)

and that’s the page, bestie 🎀 source/version shoutout: ./drivers/scsi, dated October 2026. mwah 💋✨