sbp2: use __attribute__((packed)) for on-the-wire structures
It seems to have worked without the attribute during all the years just because sizes of all struct members are multiples of 32 bits. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Ben Collins <bcollins@ubuntu.com>
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@ -52,7 +52,7 @@ struct sbp2_command_orb {
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u32 data_descriptor_lo;
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u32 misc;
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u8 cdb[12];
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};
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} __attribute__((packed));
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#define SBP2_LOGIN_REQUEST 0x0
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#define SBP2_QUERY_LOGINS_REQUEST 0x1
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@ -80,7 +80,7 @@ struct sbp2_login_orb {
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u32 passwd_resp_lengths;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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};
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} __attribute__((packed));
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#define RESPONSE_GET_LOGIN_ID(value) (value & 0xffff)
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#define RESPONSE_GET_LENGTH(value) ((value >> 16) & 0xffff)
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@ -91,7 +91,7 @@ struct sbp2_login_response {
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u32 command_block_agent_hi;
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u32 command_block_agent_lo;
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u32 reconnect_hold;
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};
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} __attribute__((packed));
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#define ORB_SET_LOGIN_ID(value) (value & 0xffff)
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@ -106,7 +106,7 @@ struct sbp2_query_logins_orb {
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u32 reserved_resp_length;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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};
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} __attribute__((packed));
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#define RESPONSE_GET_MAX_LOGINS(value) (value & 0xffff)
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#define RESPONSE_GET_ACTIVE_LOGINS(value) ((RESPONSE_GET_LENGTH(value) - 4) / 12)
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@ -116,7 +116,7 @@ struct sbp2_query_logins_response {
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u32 misc_IDs;
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u32 initiator_misc_hi;
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u32 initiator_misc_lo;
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};
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} __attribute__((packed));
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struct sbp2_reconnect_orb {
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u32 reserved1;
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@ -127,7 +127,7 @@ struct sbp2_reconnect_orb {
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u32 reserved5;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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};
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} __attribute__((packed));
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struct sbp2_logout_orb {
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u32 reserved1;
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@ -138,7 +138,7 @@ struct sbp2_logout_orb {
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u32 reserved5;
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u32 status_fifo_hi;
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u32 status_fifo_lo;
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};
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} __attribute__((packed));
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#define PAGE_TABLE_SET_SEGMENT_BASE_HI(value) (value & 0xffff)
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#define PAGE_TABLE_SET_SEGMENT_LENGTH(value) ((value & 0xffff) << 16)
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@ -146,7 +146,7 @@ struct sbp2_logout_orb {
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struct sbp2_unrestricted_page_table {
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u32 length_segment_base_hi;
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u32 segment_base_lo;
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};
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} __attribute__((packed));
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#define RESP_STATUS_REQUEST_COMPLETE 0x0
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#define RESP_STATUS_TRANSPORT_FAILURE 0x1
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@ -191,7 +191,7 @@ struct sbp2_status_block {
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u32 ORB_offset_hi_misc;
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u32 ORB_offset_lo;
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u8 command_set_dependent[24];
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};
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} __attribute__((packed));
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/*
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* Miscellaneous SBP2 related config rom defines
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