#20523: ATM ABI breakage
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Reporter: dwmw2 | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone: Chaos Calmer (trunk)
Component: kernel | Version: Trunk
Resolution: | Keywords:
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Comment (by dwmw2):
No, the end of the struct isn't good enough. If the ''size'' of the
structure changes, so does the value of SO_ATMQOS. See
include/uapi/linux/atm.h:
{{{
#define __SO_ENCODE(l,n,t) ((((l) & 0x1FF) << 22) | ((n) << 16) | \
sizeof(t))
#define __SO_LEVEL_MATCH(c,m) (((c) >> 22) == ((m) & 0x1FF))
#define __SO_NUMBER(c) (((c) >> 16) & 0x3f)
#define __SO_SIZE(c) ((c) & 0x3fff)
...
#define SO_ATMQOS __SO_ENCODE(SOL_ATM,2,struct atm_qos)
}}}
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Ticket URL: <https://dev.openwrt.org/ticket/20523#comment:4>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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