Initialize the frentry (the control block that defines a rule) checksum
to zero. Matching checksums save time and effort by mitigating the need for full rule compare. MFC after: 3 days
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=350882
@ -4973,7 +4973,7 @@ frrequest(softc, unit, req, data, set, makecopy)
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* (this meaning no pointers are included).
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*/
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pp = (u_int *)(fp->fr_caddr + fp->fr_dsize);
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for (p = (u_int *)fp->fr_data; p < pp; p++)
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for (fp->fr_cksum = 0, p = (u_int *)fp->fr_data; p < pp; p++)
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fp->fr_cksum += *p;
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WRITE_ENTER(&softc->ipf_mutex);
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