Sequence of functions while Packet Transmission

For FTP TCP data path (packet transmission)

CPU FUNCTION
0 -> sostream_direct
0 -> mcopyinuio
0 -> allocb_cred
0 -> allocb
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> dblk_constructor
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- dblk_constructor
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- allocb
0 -> crhold
0 <- crhold
0 <- allocb_cred
0 -> uiomove
0 -> xcopyin_nta
0 <- xcopyin_nta
0 <- uiomove
0 <- mcopyinuio
0 -> tcp_wput
0 -> msgdsize
0 <- msgdsize
0 -> mutex_owned
0 <- mutex_owned
0 -> conn_trace_ref
0 -> mutex_owned
0 <- mutex_owned
0 -> getpcstack
0 <- getpcstack
0 <- conn_trace_ref
0 <- tcp_wput
0 -> squeue_enter
0 -> servicing_interrupt
0 <- servicing_interrupt
0 -> mutex_owned
0 <- mutex_owned
0 -> tcp_output
0 -> tcp_timeout
0 -> conn_trace_ref
0 -> mutex_owned
0 <- mutex_owned
0 -> getpcstack
0 <- getpcstack
0 <- conn_trace_ref
0 -> timeout
0 <- timeout
0 -> timeout_common
0 -> mutex_owned
0 <- mutex_owned
0 <- timeout_common
0 <- tcp_timeout
0 -> dupb
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- dupb
0 <- tcp_output
0 -> tcp_send_data
0 -> ire_trace_ref
0 -> th_trace_ire_lookup
0 -> mutex_owned
0 <- mutex_owned
0 <- th_trace_ire_lookup
0 -> kmem_zalloc
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- kmem_zalloc
0 -> th_trace_rrecord
0 -> getpcstack
0 <- getpcstack
0 <- th_trace_rrecord
0 <- ire_trace_ref
0 -> ire_to_ill
0 <- ire_to_ill
0 -> putnext
0 -> mutex_owned
0 <- mutex_owned
0 -> mutex_owned
0 <- mutex_owned
0 -> ce_wput

For Packet reception:
And the output looks like this:

0 -> ce_intr
0 -> ddi_get_devstate
0 <- ddi_get_devstate
0 -> pci_dma_sync
0 -> ddi_get_instance
0 <- ddi_get_instance
0 -> ddi_get_soft_state
0 <- ddi_get_soft_state
0 -> ddi_driver_name
0 -> ddi_driver_major
0 <- ddi_driver_major
0 -> ddi_major_to_name
0 <- ddi_major_to_name
0 -> mod_major_to_name
0 <- mod_major_to_name
0 <- ddi_driver_name
0 -> ddi_get_instance
0 <- ddi_get_instance
0 -> pci_debug
0 <- pci_debug
0 -> pci_debug
0 <- pci_debug
0 -> pci_debug
0 <- pci_debug
0 -> pci_pbm_dma_sync
0 <- pci_pbm_dma_sync
0 <- pci_dma_sync
0 -> ce_dupb
0 -> desballoc
0 <- desballoc
0 -> gesballoc
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> dblk_esb_constructor
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- dblk_esb_constructor
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- gesballoc
0 <- ce_dupb
0 -> dvma_sync
0 <- dvma_sync
0 -> pci_fdvma_sync
0 -> pci_debug
0 <- pci_debug
0 <- pci_fdvma_sync
0 -> pci_dma_sync
0 -> ddi_get_instance
0 <- ddi_get_instance
0 -> ddi_get_soft_state
0 <- ddi_get_soft_state
0 -> ddi_driver_name
0 -> ddi_driver_major
0 <- ddi_driver_major
0 -> ddi_major_to_name
0 <- ddi_major_to_name
0 -> mod_major_to_name
0 <- mod_major_to_name
0 <- ddi_driver_name
0 -> ddi_get_instance
0 <- ddi_get_instance
0 -> pci_debug
0 <- pci_debug
0 -> pci_debug
0 <- pci_debug
0 -> pci_debug
0 <- pci_debug
0 -> pci_pbm_dma_sync
0 <- pci_pbm_dma_sync
0 <- pci_dma_sync
0 -> hcksum_assoc
0 <- hcksum_assoc
0 -> canputnext
0 <- canputnext
0 -> putnext
0 -> mutex_owned
0 <- mutex_owned
0 -> mutex_owned
0 <- mutex_owned
0 -> ip_rput
0 <- ip_rput
0 -> ip_input
0 -> ire_cache_lookup
0 -> ire_trace_ref
0 -> th_trace_ire_lookup
0 -> mutex_owned
0 <- mutex_owned
0 <- th_trace_ire_lookup
0 -> kmem_zalloc
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- kmem_zalloc
0 -> th_trace_rrecord
0 -> getpcstack
0 <- getpcstack
0 <- th_trace_rrecord
0 <- ire_trace_ref
0 <- ire_cache_lookup
0 -> ip_tcp_input
0 -> ipcl_classify_v4
0 -> conn_trace_ref
0 -> mutex_owned
0 <- mutex_owned
0 -> getpcstack
0 <- getpcstack
0 <- conn_trace_ref
0 <- ipcl_classify_v4
0 <- ip_tcp_input
0 -> ire_refrele
0 -> ire_untrace_ref
0 -> th_trace_ire_lookup
0 -> mutex_owned
0 <- mutex_owned
0 <- th_trace_ire_lookup
0 -> th_trace_rrecord
0 -> getpcstack
0 <- getpcstack
0 <- th_trace_rrecord
0 -> ire_trace_free
0 <- ire_trace_free
0 -> kmem_free
0 <- kmem_free
0 -> kmem_cache_free
0 -> kmem_cache_free_debug
0 -> kmem_log_enter
0 <- kmem_log_enter
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 -> copy_pattern
0 <- copy_pattern
0 <- kmem_cache_free_debug
0 <- kmem_cache_free
0 <- ire_untrace_ref
0 <- ire_refrele
0 -> squeue_enter_chain
0 -> servicing_interrupt
0 <- servicing_interrupt
0 -> mutex_owned
0 <- mutex_owned
0 -> tcp_input
0 <- tcp_input
0 -> tcp_rput_data
0 -> tcp_find_pktinfo
0 <- tcp_find_pktinfo
0 -> tcp_process_options
0 -> tcp_parse_options
0 <- tcp_parse_options
0 -> tcp_mss_set
0 <- tcp_mss_set
0 -> tcp_maxpsz_set
0 -> setmaxps
0 -> claimstr
0 <- claimstr
0 -> strqset
0 -> mutex_owned
0 <- mutex_owned
0 <- strqset
0 -> releasestr
0 -> cv_broadcast
0 <- cv_broadcast
0 <- releasestr
0 <- setmaxps
0 -> mi_set_sth_maxblk
0 -> allocb
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> dblk_constructor
0 -> kmem_cache_alloc
0 -> kmem_cache_alloc_debug
0 -> verify_and_copy_pattern
0 <- verify_and_copy_pattern
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- dblk_constructor
0 -> getpcstack
0 <- getpcstack
0 -> kmem_log_enter
0 <- kmem_log_enter
0 <- kmem_cache_alloc_debug
0 <- kmem_cache_alloc
0 <- allocb
0 -> putnext
0 -> mutex_owned
0 <- mutex_owned
0 -> mutex_owned
0 <- mutex_owned
0 -> strrput
Post Owed to: http://blogs.sun.com/amehta/entry/journey_of_a_network_packet